1

                                                                    Exhibit 10.6




                      AMENDED AND RESTATED CREDIT AGREEMENT

                                      among

                 SPECTRASITE COMMUNICATIONS, INC., as Borrower;

                   SPECTRASITE HOLDINGS, INC., as a Guarantor;

                          CIBC WORLD MARKETS CORP. and
      CREDIT SUISSE FIRST BOSTON, as Joint Lead Arrangers and Bookrunners;

              CIBC WORLD MARKETS CORP., CREDIT SUISSE FIRST BOSTON,
         BANK OF MONTREAL, CHICAGO BRANCH and TD SECURITIES (USA) INC.,
                                  as Arrangers;

                CREDIT SUISSE FIRST BOSTON, as Syndication Agent;

         BANK OF MONTREAL, CHICAGO BRANCH and TD SECURITIES (USA) INC.,
                           as Co-Documentation Agents;

                       CANADIAN IMPERIAL BANK OF COMMERCE,
                  as Administrative Agent and Collateral Agent;

                                       and

                      THE OTHER CREDIT PARTIES PARTY HERETO



                          Dated as of February 22, 2001

   2



                                TABLE OF CONTENTS




                   

ARTICLE 1 -           Definitions.......................................................................2

ARTICLE 2 -           Loans............................................................................38

         Section 2.1         The Loans.................................................................38

         Section 2.2         Manner of Borrowing and Disbursement......................................39

         Section 2.3         Interest..................................................................42

         Section 2.4         Fees......................................................................44

         Section 2.5         Optional Prepayment/Reduction of Commitment...............................45

         Section 2.6         Repayment.................................................................47

         Section 2.7         Mandatory Repayments......................................................49

         Section 2.8         Notes; Loan Accounts......................................................52

         Section 2.9         Manner of Payment.........................................................53

         Section 2.10        Reimbursement.............................................................54

         Section 2.11        Pro Rata Treatment........................................................54

         Section 2.12        Capital Adequacy..........................................................55

         Section 2.13        Taxes.....................................................................56

         Section 2.14        Letters of Credit.........................................................58

         Section 2.15        Swing Loans...............................................................63

         Section 2.16        Incremental Facility Loans................................................65

ARTICLE 3 -           Guarantee........................................................................67

         Section 3.1         Guarantee.................................................................67

         Section 3.2         Waivers and Releases......................................................67

         Section 3.3         Miscellaneous.............................................................68

ARTICLE 4 -           Conditions Precedent.............................................................69

         Section 4.1         Conditions Precedent to Initial Advance of the Loans and to the Issuance of
                  the Initial Letter of Credit.........................................................69

         Section 4.2         Conditions Precedent to Each Advance......................................72

         Section 4.3         Conditions Precedent to Issuance of Each Letter of Credit.................72

         Section 4.4         Conditions Subsequent to Agreement Date...................................72

ARTICLE 5 -           Representations and Warranties...................................................73

         Section 5.1         Representations and Warranties............................................73

         Section 5.2         Survival of Representations and Warranties, etc...........................82


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ARTICLE 6 -           General Covenants................................................................82

         Section 6.2         Business; Compliance with Applicable Law..................................83

         Section 6.3         Maintenance of Properties and Assets......................................83

         Section 6.4         Accounting Methods and Financial Records..................................83

         Section 6.5         Insurance.................................................................83

         Section 6.6         Payment of Taxes and Claims...............................................84

         Section 6.7         Visits and Inspections....................................................84

         Section 6.8         Use of Proceeds...........................................................84

         Section 6.9         Real Property.............................................................85

         Section 6.10        Indemnity.................................................................85

         Section 6.11        Interest Rate Hedging.....................................................86

         Section 6.12        Environmental Matters.....................................................87

         Section 6.13        ERISA.....................................................................87

         Section 6.14        Further Assurances........................................................87

         Section 6.15        Covenants Regarding Additional Collateral.................................87

         Section 6.16        Tower Subsidiaries........................................................92

         Section 6.17        Covenants Regarding the Designation of Subsidiaries and Investments.......92

ARTICLE 7 -           Information Covenants............................................................94

         Section 7.1         Quarterly Financial Statements and Information............................94

         Section 7.2         Annual Financial Statements and Information...............................95

         Section 7.3         Performance Certificates..................................................95

         Section 7.4         Copies of Other Reports...................................................96

         Section 7.5         Notice of Litigation and Other Matters....................................97

ARTICLE 8 -           Negative Covenants...............................................................98

         Section 8.1         Indebtedness..............................................................98

         Section 8.2         Investments..............................................................100

         Section 8.3         Limitation on Liens......................................................101

         Section 8.4         Amendment and Waiver.....................................................101

         Section 8.5         Liquidation; Merger; Acquisition or Disposition of Assets................101


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         Section 8.6         Limitation on Guaranties.................................................105

         Section 8.7         Restricted Payments and Purchases........................................106

         Section 8.8         Affiliate Transactions...................................................106

         Section 8.9         Corporate Name; Corporate Structure; Business............................107

         Section 8.10        Negative Pledge..........................................................107

ARTICLE 9 -           Financial Covenants.............................................................107

         Section 9.1         Borrower Leverage Ratio..................................................107

         Section 9.2         Borrower Interest Coverage Ratio.........................................108

         Section 9.3         Total Interest Coverage Ratio............................................108

         Section 9.4         Fixed Charge Coverage Ratio..............................................108

ARTICLE 10 -          Default.........................................................................108

         Section 10.1        Events of Default........................................................108

         Section 10.2        Remedies.................................................................112

         Section 10.3        Payments Subsequent to Acceleration or Maturity..........................113

         Section 10.4        Remedies with Respect to FCC Authorizations..............................113

ARTICLE 11 -          The Agents......................................................................114

         Section 11.1        Appointment and Authorization............................................114

         Section 11.2        Interest Holders.........................................................114

         Section 11.3        Consultation with Counsel................................................114

         Section 11.4        Documents................................................................114

         Section 11.5        Agents' Affiliates.......................................................114

         Section 11.6        Responsibility of the Agents.............................................115

         Section 11.7        Security Documents.......................................................115

         Section 11.8        Action by the Agents.....................................................115

         Section 11.9        Notice of Default or Event of Default....................................116

         Section 11.10       Responsibility Disclaimed................................................116

         Section 11.11       Indemnification..........................................................116

         Section 11.12       Credit Decision..........................................................117

         Section 11.13       Successor Agents.........................................................117

         Section 11.14       Agents...................................................................117


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ARTICLE 12 -          Change in Circumstances Affecting Eurodollar Advances...........................118

         Section 12.1        Eurodollar Basis Determination Inadequate or Unfair......................118

         Section 12.2        Illegality...............................................................118

         Section 12.3        Increased Costs..........................................................118

         Section 12.4        Effect On Other Advances.................................................119

ARTICLE 13 -          Miscellaneous...................................................................120

         Section 13.1        Notices..................................................................120

         Section 13.2        Expenses.................................................................121

         Section 13.3        Waivers..................................................................122

         Section 13.4        Set-Off..................................................................122

         Section 13.5        Successors and Assigns; Participations and Assignments...................123

         Section 13.6        Accounting Principles....................................................127

         Section 13.7        Counterparts.............................................................127

         Section 13.8        Governing Law............................................................127

         Section 13.9        Severability.............................................................127

         Section 13.10       Interest.................................................................127

         Section 13.11       Headings.................................................................128

         Section 13.12       Amendment and Waiver.....................................................128

         Section 13.13       Entire Agreement.........................................................129

         Section 13.14       Other Relationships......................................................129

         Section 13.15       Loan Documents...........................................................129

         Section 13.16       Reliance on and Survival of Various Provisions...........................129

         Section 13.17       Confidentiality..........................................................129

         Section 13.18       Delivery of Lender Addenda...............................................130

ARTICLE 14 -          Waiver of Jury Trial; Consent to Jurisdiction...................................130

         Section 14.1        Waiver of Jury Trial.....................................................130

         Section 14.2        Consent to Jurisdiction..................................................130


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                      AMENDED AND RESTATED CREDIT AGREEMENT
                                      among
                 SPECTRASITE COMMUNICATIONS, INC., as Borrower;
                   SPECTRASITE HOLDINGS, INC., as a Guarantor;
                          CIBC WORLD MARKETS CORP. and
      CREDIT SUISSE FIRST BOSTON, as Joint Lead Arrangers and Bookrunners;
              CIBC WORLD MARKETS CORP., CREDIT SUISSE FIRST BOSTON,
         BANK OF MONTREAL, CHICAGO BRANCH and TD SECURITIES (USA) INC.,
                                  as Arrangers;
                   CREDIT SUISSE FIRST BOSTON, as Syndication
                 Agent; BANK OF MONTREAL, CHICAGO BRANCH and TD
                             SECURITIES (USA) INC.,
                           as Co-Documentation Agents;
                       CANADIAN IMPERIAL BANK OF COMMERCE,
                  as Administrative Agent and Collateral Agent;
                                       and
                      THE OTHER CREDIT PARTIES PARTY HERETO

                              W I T N E S S E T H:

                  WHEREAS,   SpectraSite   Communications,   Inc.,   a  Delaware
corporation (the "Borrower"), SpectraSite Holdings, Inc., a Delaware corporation
("Holdco"),  CIBC World Markets Corp. (formerly known as CIBC Oppenheimer Corp.)
and Credit Suisse First Boston,  as  arrangers,  Credit Suisse First Boston,  as
syndication  agent, Bank of Montreal,  Chicago Branch,  The Bank of Nova Scotia,
Fleet National Bank (formerly known as BankBoston,  N.A.), Dresdner Bank AG, New
York and Grand Cayman Branches, Toronto Dominion (Texas), Inc. and Union Bank of
California,  N.A.,  as managing  agents,  Credit  Lyonnais New York  Branch,  as
co-agent,  Canadian Imperial Bank of Commerce, as administrative agent, Canadian
Imperial Bank of Commerce,  as collateral agent and the other Credit Parties (as
defined  therein)  party  thereto are parties to that certain  Credit  Agreement
dated as of April  20,  1999,  as  amended  by that  First  Amendment  to Credit
Agreement dated as of August 23, 1999, as further amended by that certain Second
Amendment to Credit  Agreement dated as of December 22, 1999, as further amended
by that certain  Third  Amendment to Credit  Agreement  dated as of February 14,
2000, as further  amended by that certain Fourth  Amendment to Credit  Agreement
dated as of March 9, 2000, as further amended by that certain Fifth Amendment to
Credit  Agreement dated as of April 20, 2000, as further amended by that certain
Sixth  Amendment  to Credit  Agreement  dated as of September  27, 2000,  and as
further amended by that certain Seventh  Amendment to Credit  Agreement dated as
of December 12, 2000 (as amended, the "Prior Credit Agreement"); and

                   WHEREAS,  the Borrower  desires  that the Credit  Parties (as
defined in the Prior Credit  Agreement) modify the existing credit facilities to
provide,  among other  things,  for an increase in the  principal  amount of the
Revolving Commitment to $350,000,000, an increase in the principal amount of the
Tranche A Commitment to $500,000,000  and an increase in the principal amount of
the Tranche B Commitment to $450,000,000 and for an incremental  credit facility
of up to  $250,000,000,  and the Credit  Parties (as defined in the Prior Credit
Agreement) are willing to do so in accordance  with and subject to the terms and
conditions set forth herein; and

                  WHEREAS,  the  Borrower   acknowledges  and  agrees  that  the
security interest granted to the Collateral Agent, in its capacity as collateral
agent for the Credit Parties (as defined in the Prior Credit Agreement),

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pursuant to the Prior Credit  Agreement and the other Loan Documents (as defined
in the Prior Credit  Agreement),  shall remain outstanding and in full force and
effect in  accordance  with the Prior  Credit  Agreement  and shall  continue to
secure the Obligations (as defined herein); and

                  WHEREAS,  each of the Borrower,  Holdco and the Credit Parties
acknowledges and agrees that (a) the Obligations (as defined herein)  represent,
among  other   things,   the   amendment,   restatement,   renewal,   extension,
consolidation  and  modification  of the  Obligations  (as  defined in the Prior
Credit  Agreement)  arising in  connection  with the Prior Credit  Agreement and
other Loan  Documents  (as defined in the Prior  Credit  Agreement)  executed in
connection  therewith;  (b) the Borrower,  Holdco and the Credit  Parties intend
that the Prior Credit  Agreement and the other Loan Documents (as defined in the
Prior Credit  Agreement)  executed in connection  therewith  and the  collateral
pledged thereunder shall secure, without interruption or impairment of any kind,
all existing  Indebtedness (as defined in the Prior Credit  Agreement) under the
Prior Credit  Agreement  and the other Loan  Documents  (as defined in the Prior
Credit  Agreement)  executed  in  connection  therewith  as they may be amended,
restated, renewed, extended,  consolidated and modified hereunder, together with
all other obligations  hereunder;  (c) all Liens (as defined in the Prior Credit
Agreement)  evidenced by the Prior Credit Agreement and the other Loan Documents
(as defined in the Prior Credit Agreement) executed in connection  therewith are
hereby ratified, confirmed and continued; and (d) the Loan Documents (as defined
herein) are intended to restate,  renew, extend,  consolidate,  amend and modify
the Prior Credit Agreement and the other Loan Documents (as defined in the Prior
Credit Agreement) executed in connection therewith; and

                  WHEREAS,  each of the Borrower,  Holdco and the Credit Parties
intend that (a) the provisions of the Prior Credit  Agreement and the other Loan
Documents  (as defined in the Prior  Credit  Agreement)  executed in  connection
therewith, to the extent restated, renewed, extended, consolidated,  amended and
modified hereby,  be hereby superseded and replaced by the provisions hereof and
of the other Loan  Documents  (as  defined  herein);  (b) the Notes (as  defined
herein)  restate,  renew,  extend,  consolidate,  amend,  modify,  replace,  are
substituted  for and  supersede  in its  entirety,  but do not  extinguish,  the
Indebtedness (as defined in the Prior Credit Agreement)  arising under the Notes
(as defined in the Prior Credit  Agreement)  issued pursuant to the Prior Credit
Agreement;  and (c) by entering into and performing their respective obligations
hereunder, this transaction shall not constitute a novation.

                  NOW,  THEREFORE,  for and in consideration of the premises and
the mutual covenants herein set forth, and in order to induce the Credit Parties
to increase the principal amount of existing credit  facilities,  as well as for
other good and  valuable  consideration,  the receipt and adequacy of all of the
foregoing as legally sufficient  consideration  being hereby  acknowledged,  the
Borrower,  Holdco and the  Credit  Parties  each do hereby  agree that the Prior
Credit Agreement is amended and restated to read as follows:

                            ARTICLE 1 - Definitions.


                  For the purposes of this Agreement:

                  "Acquisition"  shall mean,  with  respect to any  Person,  any
transaction  or series  of  related  transactions  for the  direct  or  indirect
(whether by purchase, lease, exchange, issuance of stock or other equity or debt
securities, merger, reorganization or any other method) (a) acquisition by such

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Person of any other Person, which Person shall then become consolidated with the
acquiring  Person in accordance with GAAP, (b) acquisition by such Person of all
or any substantial part of the assets of any other Person, or (c) acquisition by
such Person of any Towers, Tower Sites or other communications tower facilities,
communication tower management businesses or related contracts.

                  "Additional  Amounts"  shall  have the  meaning  set  forth in
Section 2.13 hereof.

                  "Adjustment  Date" shall mean the second  (2nd)  Business  Day
after the date on which the  financial  statements  referred  to in Section  7.1
hereof for the two (2) full fiscal  quarters of the Borrower  from and after the
Agreement Date have been delivered to the Arrangers.

                  "Administrative  Agent"  shall  mean CIBC,  as  administrative
agent   hereunder   for  the  Credit   Parties,   together  with  any  successor
Administrative Agent hereunder.

                  "Administrative  Agent's  Office" shall mean the office of the
Administrative Agent, located at 425 Lexington Avenue, New York, New York 10017,
or such other office as may be designated  pursuant to the provisions of Section
13.1 of this Agreement.

                  "Advance" or  "Advances"  shall mean  amounts  advanced to the
Borrower pursuant to Article 2 hereof on the occasion of any borrowing.

                  "Affiliate"  shall  mean,  with  respect to a Person,  (a) any
other Person directly or indirectly controlling,  controlled by, or under common
control with,  such first  Person;  and (b) any Person having direct or indirect
beneficial ownership of ten percent (10%) or more of the equity interest in such
first Person. For purposes of this definition,  "control" when used with respect
to any Person includes,  without limitation,  power, whether direct or indirect,
to direct or cause the direction of the  management  and policies of such Person
whether through the ownership of voting securities or other equity interests, by
contract or otherwise.  Unless otherwise  specified,  "Affiliate" as used herein
shall mean an Affiliate of the Borrower, and shall include,  without limitation,
Holdco.

                  "Agents" shall mean,  collectively,  the Administrative Agent,
the Collateral Agent, the  Co-Documentation  Agents,  the Syndication Agent, the
Managing Agents, the Arrangers and the Lead Arrangers.

                  "Agreement"  shall  mean  this  Amended  and  Restated  Credit
Agreement.

                  "Agreement  Date"  shall  mean  the  date  as  of  which  this
Agreement is dated.

                  "AirTouch"  shall mean Verizon  Wireless (VAW) LLC, a Delaware
limited liability company, formerly known as Vodafone, AirTouch Licenses LLC, as
successor to AirTouch Communications, Inc.

                  "AirTouch  Acquisition"  shall mean the  Acquisition by CTI or
another Tower  Subsidiary  from AirTouch of certain Towers with respect to which
AirTouch is the anchor tenant and Tower Assets related thereto,  pursuant to the
terms and  conditions  of the AirTouch  Lease  Documents  for an aggregate  cash
Purchase Price not to exceed $180,000,000.

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   10

                  "AirTouch  Lease  Documents"  shall  mean,  collectively,  the
AirTouch Sublease,  the AirTouch Master Site Lease Agreement,  the AirTouch Site
Development  and  Build-to-Suit  Agreement and all other  documents  executed in
connection with the AirTouch Acquisition.

                  "AirTouch Master Site Lease Agreement" shall mean that certain
Master Tower Site Lease Agreement  dated as of August 15, 2000,  among AirTouch,
CTI and Holdco.

                  "AirTouch Site Development and Build-to-Suit  Agreement" shall
mean that certain  Site  Development  and  Build-to-Suit  Agreement  dated as of
August 15, 2000, among AirTouch, CTI and Holdco.

                  "AirTouch  Sublease" shall mean that certain Sublease dated as
of  August  15,  2000,  among  AirTouch,  the other  parties  named  therein  as
"Sublessors," CTI and Holdco.

                  "Annualized  EBITDA" shall mean, as of any  calculation  date,
the result of (a) the sum of (i) EBITDA (Other Operations), plus (ii) Annualized
EBITDA  (Tower  Operations),  less (b)  Corporate  Overhead  for the twelve (12)
calendar  month period ended on the last day of the calendar month most recently
ended for which financial statements are then available.

                  "Annualized  EBITDA (Tower  Operations)" shall mean, as of any
calculation date, the product of (a) EBITDA with respect to the Tower Operations
for the calendar  month most recently ended for which  financial  statements are
then available, times (b) twelve (12).

                   "Applicable  Law" shall mean,  in respect of any Person,  all
provisions  of  constitutions,   statutes,  rules,  regulations  and  orders  of
governmental bodies or regulatory agencies applicable to such Person, including,
without limiting the foregoing, the Necessary Authorizations, the Communications
Act, zoning  ordinances and all Environmental  Laws, all rules,  regulations and
published decisions of the FCC and the FAA, and all orders, decisions, judgments
and decrees of all courts and arbitrators in proceedings or actions to which the
Person in question is a party or by which it is bound.

                  "Applicable  Margin"  shall  mean  the  interest  rate  margin
applicable to Advances hereunder as determined in accordance with Section 2.3(f)
hereof.

                  "Approved Fund" shall mean, with respect to any Lender that is
a fund that  invests  in  commercial  loans,  any other  fund  that  invests  in
commercial  loans and is managed or  advised by the same  investment  advisor as
such Lender or by an Affiliate of such investment advisor.

                  "Arrangers"  shall  mean,  collectively,  CIBC  World  Markets
Corp.,  CSFB, Bank of Montreal,  Chicago Branch and TD Securities  (USA) Inc. in
their respective capacities as arrangers under this Agreement.

                  "Assets"  shall mean any or all of the  property and assets of
the Borrower and the Designated Subsidiaries.

                  "Assignment   and  Assumption   Agreement"   shall  mean  each
Assignment  and Assumption  Agreement,  in  substantially  the form of Exhibit A
attached hereto, pursuant to which a Lender may, subject to Section 13.5 hereof,
sell or  participate  a portion  of its  Loans  (other  than  Swing  Loans)  and
Commitments.

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                  "Assignment  of  Airtouch  Lease  Documents"  shall  mean that
certain  Assignment of Contracts dated as of August 15, 2000, among Holdco,  CTI
and the Collateral Agent, for the benefit of the Senior Credit Parties, pursuant
to which Holdco and CTI have collaterally  assigned to the Collateral Agent, for
the benefit of the Senior Credit  Parties,  all of their  interest in and rights
under each of the Airtouch Lease Documents.

                  "Assignment of Lodestar Acquisition Documents" shall mean that
certain  Assignment of Acquisition  Documents dated as of May 18, 2000,  between
the  Borrower and the  Collateral  Agent,  for the benefit of the Senior  Credit
Parties,  pursuant  to which  the  Borrower  has  collaterally  assigned  to the
Collateral  Agent,  for the  benefit of the Senior  Credit  Parties,  all of its
interest in and rights under each of the Lodestar Acquisition Documents.

                  "Assignment of Nextel  Acquisition  Documents" shall mean that
certain  Assignment of Acquisition  Documents dated as of April 20, 1999,  among
Holdco,  the  Borrower,  TAS and the  Collateral  Agent,  for the benefit of the
Senior  Credit  Parties,  pursuant to which  Holdco,  the  Borrower and TAS have
collaterally  assigned to the  Collateral  Agent,  for the benefit of the Senior
Credit  Parties,  all of their  interest in and rights  under each of the Nextel
Acquisition Documents (other than the Nextel Subordinated Security Agreement).

                  "Assignment  of NTA  Investment  Documents"  shall  mean  that
certain  Assignment  of  Contracts  dated as of August  30,  1999,  between  the
Borrower and the Collateral Agent, for the benefit of the Senior Credit Parties,
pursuant to which the  Borrower  has  collaterally  assigned  to the  Collateral
Agent, for the benefit of the Senior Credit Parties,  all of its interest in and
rights under each of the NTA Investment Documents.

                  "Assignment  of SBC Lease  Documents"  shall mean that certain
Assignment  of Contracts  dated as of the  Agreement  Date,  among  Holdco,  the
Borrower,  STI and the  Collateral  Agent,  for the benefit of the Senior Credit
Parties,  pursuant  to which  Holdco,  the  Borrower  and STI have  collaterally
assigned to the Collateral  Agent, for the benefit of the Senior Credit Parties,
all of their interest in and rights under each of the SBC Lease Documents.

                  "Assignments   of   Acquisition    Documents"    shall   mean,
collectively,  the Assignment of Nextel Acquisition Documents, the Assignment of
AirTouch Lease Documents,  the Assignment of SBC Lease Documents, the Assignment
of Lodestar  Acquisition  Documents,  the Assignment of NTA Investment Documents
and each other collateral  assignment executed by Holdco, the Borrower or any of
the Subsidiary Guarantors,  in form and substance reasonably satisfactory to the
Collateral  Agent,  of their  respective  interest in and rights under any other
Permitted Acquisition Documents.

                  "Authorized  Signatory"  shall mean such senior personnel of a
Person as may be duly  authorized  and  designated  in writing by such Person to
execute documents, agreements and instruments on behalf of such Person.

                  "Available Revolving Commitment" shall mean (a) as of any date
prior to the Revolving Loan Availability Date, the lesser of (i) $50,000,000 and
(ii) the amount of the Revolving Commitment,  and (b) on and after the Revolving
Loan Availability Date, the amount of the Revolving Commitment.

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   12

                  "Bankruptcy Code" shall mean the United States Bankruptcy Code
(11 U.S.C. Section 101 et seq.), as now or hereafter amended, and any successor
statute.

                  "Base Rate" shall mean, as of any date, a simple interest rate
per annum equal to the higher of (x) the Prime  Rate,  or (y) the sum of (A) the
Federal Funds Rate, plus (B) one-half of one percent (1/2%). The Base Rate shall
be adjusted automatically as of the opening of business on the effective date of
each change in the Prime Rate or the Federal  Funds Rate, as the case may be, to
account for such change.

                  "Base Rate Advance"  shall mean an Advance (other than a Swing
Loan) which the Borrower  requests to be made as a Base Rate Advance or which is
converted to a Base Rate Advance in  accordance  with the  provisions of Section
2.2 hereof.

                  "Borrower"  shall  have the  meaning  assigned  thereto in the
recitals to this Agreement.

                  "Borrower  Debt" shall mean, as of any  calculation  date, all
Funded Debt of the Borrower and the Designated  Subsidiaries,  on a consolidated
basis, in each case without duplication.

                  "Borrower   Interest   Coverage  Ratio"  shall  mean,  on  any
calculation  date,  for the  Borrower  and  the  Designated  Subsidiaries,  on a
consolidated  basis, the ratio of (a) Annualized  EBITDA as at such date, to (b)
cash Borrower  Interest  Expense for the  immediately  preceding four (4) fiscal
quarter period.

                  "Borrower  Interest  Expense" shall mean, for any period,  for
the  Borrower and the  Designated  Subsidiaries  on a  consolidated  basis,  all
interest expense paid or accrued in respect of Borrower Debt (including, without
limitation,  the  interest  component  of payments for such period in respect of
Capitalized  Lease  Obligations),  together with  recurring  fees (in any event,
including, without limitation, all fees due under Section 2.4 hereof) associated
therewith  (other than fees payable on or prior to the  Agreement  Date),  after
giving effect to any Interest Hedge Agreements,  all as determined in accordance
with GAAP, excluding underwriting, arrangement and similar fees.

                  "Borrower Leverage Ratio" shall mean, on any calculation date,
the ratio of (a) Borrower Debt, to (b) Annualized EBITDA.

                  "Borrower  Pledge  Agreement"  shall mean that certain Amended
and Restated  Borrower Pledge Agreement  between the Borrower and the Collateral
Agent, for the benefit of the Credit Parties, dated as of the Agreement Date, in
substantially the form of Exhibit B attached hereto.

                  "Broadcast   Services   Business"   shall  mean  the  services
component of the  Borrower's and the Designated  Subsidiaries'  broadcast  tower
business, but specifically excluding the ownership and leasing of Towers.

                  "Business  Day"  shall mean a day on which  banks and  foreign
exchange  markets are open for the  transaction  of business  required  for this
Agreement in London and New York, as relevant to the determination to be made or
the action to be taken.

                                        6
   13

                  "Canadian  Subsidiaries"  shall  mean,  collectively,  Foreign
Subsidiaries organized under the laws of Canada.

                  "Capital  Expenditures"  shall mean, in respect of any Person,
expenditures  in respect of capital  assets which are required to be capitalized
in accordance  with GAAP;  provided,  however,  that  expenditures in respect of
replacement assets made using any proceeds of casualty insurance policies to the
extent permitted under this Agreement shall not constitute Capital Expenditures.

                  "Capitalized  Lease Obligation" shall mean that portion of any
obligation  of a  Person  as  lessee  under  a lease  which  is  required  to be
capitalized on the balance sheet of such lessee in accordance with GAAP.

                  "Certificate of Financial Condition" shall mean a certificate,
substantially  in the form of Exhibit C attached  hereto,  signed by a Financial
Officer  of the  Borrower,  together  with any  schedules,  exhibits  or annexes
appended thereto.

                  "Change of Control" shall mean any of the following:

                  (a) any `person'  (as such term is used in Sections  13(d) and
14(d) of the Exchange Act), other than one or more Controlling Shareholders,  is
or becomes the  beneficial  owner (as defined in Rules 13d-3 and 13d-5 under the
Exchange  Act,  except that for purposes of this clause (a) such person shall be
deemed to have `beneficial ownership' of all shares that any such person has the
right to acquire,  whether such right is  exercisable  immediately or only after
the passage of time),  directly or indirectly,  of more than thirty-five percent
(35%) of the  total  voting  power of the  Voting  Stock  of  Holdco;  provided,
however,  that the Controlling  Shareholders do not have the right or ability by
voting  power,  contract or  otherwise,  to elect or  designate  for  election a
majority of the board of  directors  of Holdco (for the  purposes of this clause
(a), such other person shall be deemed to  beneficially  own any Voting Stock of
an entity  (the  `specified  entity')  held by any  other  entity  (the  `parent
entity'),  if such  other  person is the  beneficial  owner (as  defined in this
clause (a)),  directly or indirectly,  of more than thirty-five percent (35%) of
the voting power of the Voting Stock of such parent  entity and the  Controlling
Shareholders  `beneficially  own' (as defined in this clause  (a)),  directly or
indirectly,  in the  aggregate a lesser  percentage  of the voting  power of the
Voting  Stock of such  parent  entity  and do not have the right or  ability  by
voting  power,  contract or  otherwise,  to elect or designate for election of a
majority of the board of directors of such parent entity); or

                  (b) during any period of two (2) consecutive years (or, in the
case this event occurs  within the two (2) year period  following  the Agreement
Date,  such  shorter  period  as  shall  have  begun  on  the  Agreement  Date),
individuals  who at the  beginning  of such  period  constituted  the  board  of
directors of Holdco  (together  with any new  directors  whose  election by such
board of  directors or whose  nomination  for  election by the  shareholders  of
Holdco was  approved  by a vote of a majority  of the  directors  of Holdco then
still in office who were either  directors  at the  beginning  of such period or
whose election or nomination for election was previously so approved)  cease for
any reason to  constitute a majority of the board of directors of Holdco then in
office; or

                  (c)  Holdco's  merger or  consolidation  with or into  another
Person or the merger of another Person with or into Holdco if Holdco's

                                        7
   14

securities that are outstanding  immediately prior to such transaction and which
represent one hundred  percent (100%) of the aggregate  voting power of Holdco's
Voting  Stock are changed into or exchanged  for cash,  securities  or property,
unless  pursuant  to  such  transaction  such  securities  are  changed  into or
exchanged  for,  in  addition  to any  other  consideration,  securities  of the
surviving  corporation that represent  immediately  after such  transaction,  at
least a  majority  of the  aggregate  voting  power of the  Voting  Stock of the
surviving corporation; or

                  (d) the sale of all or substantially all of Holdco's assets to
another  Person,  other  than a  Controlling  Shareholder  or a  Person  that is
controlled by the Controlling Shareholders; or

                  (e) the failure of Holdco to own and control, free of any Lien
or encumbrance  other than Liens in favor of the Collateral  Agent and Permitted
Liens, one hundred percent (100%) of the issued and outstanding Equity Interests
of the Borrower (other than any Permitted High-Yield Securities); or

                  (f) the failure of the  Borrower to own and  control,  free of
any Lien or encumbrance  other than Permitted  Liens, one hundred percent (100%)
of the issued and outstanding Equity Interests of each of the Tower Subsidiaries
and at least  fifty-one  percent  (51%) of the  issued  and  outstanding  Equity
Interests of each of the other Designated Subsidiaries.

                  "CIBC" shall mean Canadian Imperial Bank of Commerce acting by
or  through  one or  more  of its  affiliates,  branches  or  agencies,  and any
successor thereof.

                  "Code"  shall  mean the  Internal  Revenue  Code of  1986,  as
amended from time to time.

                  "Co-Documentation  Agents" shall mean,  collectively,  Bank of
Montreal,  Chicago  Branch and TD  Securities  (USA) Inc.,  in their  respective
capacities as co-documentation agents under this Agreement.

                  "Co-Locator"  shall mean any tenant on a Tower which is not an
anchor tenant.

                  "Co-Location  Percentage"  shall  mean,  with  respect  to the
Borrower and the Designated Subsidiaries on a consolidated basis, as of the last
day of any fiscal  quarter,  the  percentage  determined  by dividing  the total
number  of  co-location  leases  executed  by the  Borrower  or  any  Designated
Subsidiary  during the fiscal  quarter  then ended by the total number of Towers
owned or leased by the Borrower or a Designated  Subsidiary  as of the first day
of such fiscal quarter, multiplied by four (4).

                  "Collateral"  shall mean all  property  pledged as  collateral
security for the Obligations  pursuant to the Security Documents or otherwise to
the extent set forth in the Security  Documents,  and all other  property of the
Borrower or any of the  Subsidiary  Guarantors  that is now or  hereafter in the
possession  or control of any Credit Party or in which any Credit Party has been
granted a Lien.

                  "Collateral  Agent"  shall  mean  CIBC,  in  its  capacity  as
collateral  agent for the  Credit  Parties  hereunder  and  under  the  Security
Documents, together with any successor Collateral Agent hereunder.

                                        8
   15

                  "Commitment Ratio" shall mean, with respect to any Lender, the
ratio, expressed as a percentage, of (i) the Commitments of such Lender, divided
by (ii) the  aggregate  Commitments  of all of the Lenders.  As of the Agreement
Date,  the  Commitments of each Lender are set forth on Schedule 1 to the Lender
Addendum delivered by such Lender.

                  "Commitments"   shall  mean,   collectively,   the   Revolving
Commitment,  the  Tranche  A  Commitment,  the  Tranche  B  Commitment  and,  if
applicable, the Incremental Facility Commitments.

                  "Communications  Act"  shall  mean the  Communications  Act of
1934,  and  any  similar  or  successor  federal  statute,  and  the  rules  and
regulations  of the FCC  thereunder,  all as  amended  and as the same may be in
effect from time to time.

                  "Concourse Communications" shall mean Concourse Communications
Group LLC, a Delaware limited  liability  company all of the Equity Interests of
which are owned by the Borrower and NTA.

                  "Controlling  Shareholders" shall  mean, collectively,  Welsh,
Whitney,  Stephen H. Clark, David P. Tomick, Joe L. Finley,  Waller-Sutton Media
Partners, L.P., Kitty Hawk Limited Partnership,  III, Kitty Hawk Capital Limited
Partnership,  IV, Eagle Creek Capital,  L.L.C.,  The North  Carolina  Enterprise
Fund,  L.P.,  Finley Family  Limited  Partnership,  SBC and Nextel or any Person
directly or indirectly controlling,  controlled by, or under common control with
any of the foregoing.

                  "Convertible  Securities"  shall mean,  collectively,  (a) any
Equity  Interests  of any  Person  which are  convertible,  at the option of the
holder thereof,  into Funded Debt at any time on or before the date which is six
(6) months following the Final Maturity Date and (b) any Equity Interests of any
Person which are  convertible,  other than at the option of the  Borrower,  into
Funded Debt upon the occurrence of a triggering event, but such Equity Interests
shall  only  be  deemed  Convertible  Securities  upon  the  occurrence  of such
triggering event.

                  "Corporate Overhead" shall mean, for any period, the result of
(a) the Borrower's  selling,  general and  administrative  expenses  during such
period, less (b) any pro forma adjustments,  which shall be satisfactory to each
of the Lead Arrangers, to the selling, general and administrative expense of any
Person that became a Designated  Subsidiary  or was merged with or  consolidated
into the Borrower or a Designated Subsidiary during such period.

                  "Credit  Parties" shall mean,  collectively,  the Agents,  the
Lenders,  the  Issuing  Bank,  the Swing Loan Lender  and,  if  applicable,  the
Incremental Facility Lenders.

                  "Credit Support  Provider" shall have the meaning set forth in
Section 13.5(k) hereof.

                  "CSFB"  shall mean Credit  Suisse  First  Boston  acting by or
through one or more of its affiliates,  branches or agencies,  and any successor
thereof.

                  "CTI"  shall  mean   California   Tower,   Inc.,   a  Delaware
corporation and a wholly owned Restricted Subsidiary of the Borrower.

                                        9
   16

                  "Default"  shall  mean any  Event of  Default,  and any of the
events  specified  in  Section  10.1,  regardless  of whether  there  shall have
occurred  any  passage  of time or  giving of  notice,  or both,  that  would be
necessary in order to constitute such event an Event of Default.

                  "Default  Rate"  shall mean a simple per annum  interest  rate
equal to the sum of (a) the Base Rate, (b) the Applicable  Margin then in effect
with respect to Base Rate Advances, and (c) two percent (2%).

                  "Designated   Subsidiaries"  shall  mean,  collectively,   the
Restricted  Subsidiaries,  the Foreign  Subsidiaries,  the Domestic  SpectraSite
Mexico  Subsidiaries,  the Foreign  SpectraSite Mexico Subsidiaries and, at such
time as the Borrower (directly or indirectly) shall own a majority of the Equity
Interests  in  Concourse   Communications,   Concourse  Communications  and  its
Subsidiaries;  provided,  however, that, in the event the Majority Lenders agree
to the  release of any  Guaranties  issued by or any  Collateral  pledged by any
Domestic  SpectraSite  Mexico  Subsidiary  or  any  Foreign  SpectraSite  Mexico
Subsidiary  pursuant to Section 6.17(c) hereof, such Subsidiary shall thereafter
not constitute a Designated Subsidiary for purposes of this Agreement.

                  "Dollars"  or "$"  shall  mean the  basic  unit of the  lawful
currency of the United States of America.

                  "Domestic  SpectraSite  Mexico  Investments"  shall  mean  any
direct or indirect minority  Investments by the Borrower in the Equity Interests
of Persons organized under the laws of the United States or any state thereof or
the District of Columbia  which  Investments  comprise a portion of  SpectraSite
Mexico to the extent not designated by the Borrower as Unrestricted Investments.

                  "Domestic   SpectraSite   Mexico   Subsidiaries"   shall  mean
Subsidiaries  of the Borrower  organized  under the laws of the United States or
any state  thereof or the  District of Columbia  which  Subsidiaries  comprise a
portion of  SpectraSite  Mexico to the extent not  designated by the Borrower as
Unrestricted Subsidiaries.

                  "EBITDA" shall mean, for any period,  for the Borrower and the
Designated Subsidiaries on a consolidated basis, the sum of (a) Net Income, plus
(b) to the extent deducted in determining Net Income,  the result of (i) the sum
of each of the following for such period:  (A) Borrower  Interest  Expense,  (B)
income tax expense, (C) depreciation and amortization, (D) extraordinary losses,
(E) all other  non-cash  interest  or  charges  and (F)  non-recurring  charges,
restructuring  charges,  transaction  expenses and underwriters' fees, less (ii)
extraordinary gains and cash payments (not otherwise deducted in determining Net
Income) made during such period with respect to non-cash charges that were added
back in a prior period;  provided,  however, (I) with respect to any Person that
became a  Designated  Subsidiary,  or was merged with or  consolidated  into the
Borrower or any Designated Subsidiary, during such period, or the Acquisition by
the Borrower or any of the Designated  Subsidiaries of a substantial part of the
assets of any Person,  "EBITDA" shall also include (x) the EBITDA of such Person
or  attributable  to such assets,  as applicable,  during such period as if such
Acquisition,  merger  or  consolidation  had  occurred  on the first day of such
period,  and (y) an amount equal to the projected expense savings to be realized
by the Borrower or such Subsidiary,  as the case may be, in connection with such
Acquisition,  as  demonstrated  to the  satisfaction of and approved by the Lead
Arrangers,  and  (II)  with  respect  to any  Person  that  has  ceased  to be a
Designated Subsidiary during such period, or any material assets of the Borrower
or any of the Designated Subsidiaries sold or otherwise disposed of by the

                                       10
   17

Borrower or any such Designated  Subsidiary  during such period,  "EBITDA" shall
exclude the EBITDA of such Person or attributable to such assets, as applicable,
during such period as if such sale or disposition of such Designated  Subsidiary
or such assets had occurred on the first day of such period;  provided  further,
however,  that  solely for  purposes of  determining  Annualized  EBITDA  (Tower
Operations)  and EBITDA  (Other  Operations),  "EBITDA"  shall be the sum of (I)
EBITDA as determined  based on the foregoing  calculation,  plus (II)  Corporate
Overhead for the relevant period.

                  "EBITDA (Other  Operations)" shall mean, as of any calculation
date,  EBITDA with respect to the Other  Operations for the twelve (12) calendar
month period ended on the last day of the calendar month most recently ended for
which financial statements are then available.

                  "Eligible  Assignee" shall mean (a) a Lender, (b) an Affiliate
of a Lender, (c) an Approved Fund, or (d) any other Person (other than a natural
Person) approved by the Administrative  Agent and, unless a Default has occurred
and is continuing,  the Borrower (such approval of the Administrative  Agent and
the Borrower not to be unreasonably withheld or delayed).

                  "Eligible Debt Offering" shall mean that portion of any public
or private  issuance of any Funded Debt or any Convertible  Securities by Holdco
conducted  after the Agreement  Date with respect to which the Net Cash Proceeds
received  by  Holdco  are  Invested  in the  Borrower  or any of the  Restricted
Subsidiaries in the form of New Affiliated Equity.

                  "Eligible  Equity  Offering"  shall  mean that  portion of any
public or private  issuance  of  Permitted  High-Yield  Securities  constituting
preferred  equity  securities by Holdco  conducted after the Agreement Date with
respect to which the Net Cash  Proceeds  received by Holdco are  Invested in the
Borrower or any of the  Restricted  Subsidiaries  in the form of New  Affiliated
Equity.

                  "Environmental  Laws" shall mean,  with respect to any Person,
all  applicable  federal,  state,  local and municipal  laws,  statutes,  rules,
regulations and ordinances,  codes, common law, consent agreements to which such
Person  is a  party  or  by  which  it is  bound,  orders,  decrees,  judgments,
injunctions,  permits,  licenses,  authorizations and other requirements issued,
promulgated,  approved  or  entered  thereunder  affecting  such  Person  or its
property  and  relating  to, or  imposing  liability  or  standards  of  conduct
concerning, public or occupational health, safety or the pollution or protection
of the environment,  including,  without limitation, those relating to releases,
discharges,  emissions, spills, leaching, or disposals to, on, under, or in air,
water,  land or ground water,  to the withdrawal or use of ground water,  to the
use,  handling  or  disposal  of  polychlorinated  biphenyls,  asbestos  or urea
formaldehyde,  to the  treatment,  storage,  disposal or management of hazardous
substances.

                  "Equity  Interests" shall mean, as applied to any Person,  any
capital stock (common or preferred),  general or limited partnership  interests,
limited  liability  company  interests  or  other  equivalents  of such  Person,
regardless of class or designation,  and all warrants, options, purchase rights,
conversion or exchange rights,  voting rights,  calls or claims of any character
with respect thereto.

                                       11
   18

                  "ERISA" shall mean the Employee Retirement Income Security Act
of 1974, as in effect from time to time.

                  "ERISA  Affiliate"  shall mean any "affiliate" of the Borrower
within the meaning of Section 414 of the Code.

                  "Eurodollar Advance" shall mean an Advance (other than a Swing
Loan) which the Borrower requests to be made as a Eurodollar Advance or which is
continued  as or  converted  to a  Eurodollar  Advance  in  accordance  with the
provisions of Section 2.2 hereof.

                  "Eurodollar Advance Period" shall mean, in connection with any
Eurodollar Advance, the term of such Advance selected by the Borrower, which may
be one (1),  two (2),  three  (3) or six (6)  months,  and  subject  to the last
proviso  of this  definition,  nine (9) or  twelve  (12)  months,  or  otherwise
determined in accordance with this Agreement; provided, however, notwithstanding
the  foregoing,  (a)  any  applicable  Eurodollar  Advance  Period  which  would
otherwise  end on a day which is not a  Business  Day shall be  extended  to the
succeeding  Business  Day unless  such  Business  Day falls in another  calendar
month, in which case such  Eurodollar  Advance Period shall end on the preceding
Business Day, (b) any applicable Eurodollar Advance Period which begins on a day
for which there is no numerically corresponding day in the calendar month during
which such  Eurodollar  Advance  Period is to end shall  (subject  to clause (i)
above) end on the last day of such calendar month, and (c) no Eurodollar Advance
Period shall extend beyond the applicable  Maturity Date or such earlier date as
would interfere with the Borrower's repayment  obligations under Sections 2.6 or
2.7 hereof; provided further,  however, the Borrower may not select a Eurodollar
Advance Period in excess of six (6) months unless the  Administrative  Agent has
notified  the  Borrower  that  each  applicable  Lender  has  consented  to such
Eurodollar Advance Period.

                  "Eurodollar  Base Rate" shall mean,  with  respect to each day
during each  Eurodollar  Advance  Period,  the rate per annum  determined by the
Administrative  Agent to be the arithmetic mean (rounded,  if necessary,  to the
nearest  1/100th of 1%) of the offered rates for deposits in Dollars with a term
comparable  to such  Eurodollar  Advance  Period  that  appears on the  Telerate
British Bankers Assoc.  Interest  Settlement Rates Page at  approximately  11:00
a.m.  (London  time),  on the second  (2nd) full  Business  Day  preceding  such
Eurodollar Advance Period; provided, however, that if there shall at any time no
longer exist a Telerate British Bankers Assoc.  Interest  Settlement Rates Page,
"Eurodollar  Base  Rate"  shall  mean,  with  respect  to each day  during  each
Eurodollar Advance Period, the rate per annum equal to the rate at which CIBC is
offered Dollar deposits at or about 11:00 a.m. (New York time), two (2) Business
Days prior to the beginning of such  Eurodollar  Advance Period in the interbank
eurodollar  market  where the  eurodollar  and  foreign  currency  and  exchange
operations in respect of its  Eurodollar  Advances are then being  conducted for
delivery on the first day of such  Eurodollar  Advance  Period for the number of
days  comprised  therein  and in the  amount  comparable  to the  amount  of its
Eurodollar  Advance to be outstanding  during such Eurodollar Advance Period. As
used herein,  "Telerate British Bankers Assoc.  Interest  Settlement Rates Page"
shall  mean  the  display  designated  as  page  3750  on  the  Telerate  System
Incorporated  Service  (or such  other  page as may  replace  such  page on such
service for the purpose of  displaying  the rates at which  Dollar  deposits are
offered by leading banks in the London interbank deposit market).

                                       12
   19

                  "Eurodollar  Rate" shall mean, with respect to each day during
each  Eurodollar  Advance  Period,  a rate per annum  determined for such day in
accordance  with the following  formula  (rounded,  if necessary,  upward to the
nearest 1/100th of 1%):

                              Eurodollar Base Rate
                      1.00 - Eurodollar Reserve Percentage

                  "Eurodollar  Reserve  Percentage"  shall mean,  for any day as
applied to a Eurodollar  Advance,  the aggregate  (without  duplication)  of the
rates  (expressed as a decimal  fraction) of reserve  requirements  in effect on
such day  (including,  without  limitation,  basic,  supplemental,  marginal and
emergency  reserves  under  any  regulations  of the Board of  Governors  of the
Federal Reserve System or other Governmental  Authority having jurisdiction with
respect thereto) dealing with reserve  requirements  prescribed for eurocurrency
funding (currently referred to as "Eurocurrency  Liabilities" in Regulation D of
such Board) maintained by a member bank of the Federal Reserve System.

                  "Event of Default"  shall mean any of the events  specified in
Section 10.1,  provided that any requirement for notice or lapse of time or both
has been satisfied.

                  "Excess  Cash Flow" shall mean,  with  respect to the Borrower
and the Designated  Subsidiaries  on a consolidated  basis, as of the end of any
fiscal  year of the  Borrower  and  based on the  audited  financial  statements
required to be  provided  under  Section  7.2  hereof,  the excess of (a) EBITDA
(without  regard to either  proviso in the  definition of the term "EBITDA") for
such fiscal year,  over (b) the sum of the following items for such fiscal year:
(i)  Fixed  Charges;  (ii)  non-maintenance  Capital  Expenditures;   and  (iii)
permanent,   voluntary  prepayments  of  the  Loans  (accompanied  by  permanent
reduction  in a like  amount of the  Revolving  Commitment,  in the case of such
prepayment of the Revolving Loans) hereunder.

                  "Exchange Act" shall mean the Securities Exchange Act of 1934,
as it may be amended, and any successor act thereto.

                  "Exemption  Certificate"  shall have the  meaning set forth in
Section 2.13 hereof.

                  "FAA" shall mean the Federal Aviation  Administration,  or any
other similar or successor agency of the federal government.

                  "FCC" shall mean the Federal Communications Commission, or any
other similar or successor agency of the federal  government  administering  the
Communications Act.

                  "Federal  Funds Rate" shall mean, as of any date, the weighted
average of the rates on overnight federal funds transactions with the members of
the Federal Reserve System  arranged by federal funds brokers,  as published for
such day (or, if such day is not a Business Day, for the next preceding Business
Day)  by the  Federal  Reserve  Bank of New  York,  or,  if such  rate is not so
published for any day which is a Business Day, the average of the quotations for
such day on such transactions  received by the  Administrative  Agent from three
(3) federal funds brokers of recognized  standing selected by the Administrative
Agent.

                  "Final  Maturity  Date" shall mean  December 31, 2007, or such
earlier date on which the payment of all  outstanding  Obligations  shall be due
(whether by acceleration or otherwise).

                                       13
   20

                  "Financial  Covenants"  shall  mean  from  time  to  time  the
financial covenants applicable to the Borrower from time to time as set forth in
Article 9 hereof.

                  "Financial  Officer"  shall mean,  with respect to any Person,
the chief  financial  officer,  treasurer  or vice  president of finance of such
Person.

                  "Financial Statements" shall have the meaning assigned thereto
in Section 5.1(k) hereof.

                  "Fixed Charge  Coverage  Ratio" shall mean, on any calculation
date, for the Borrower and the Designated  Subsidiaries on a consolidated basis,
the ratio of (a)  Annualized  EBITDA as at such date, to (b) the amount of Fixed
Charges during the immediately preceding four (4) fiscal quarter period.

                  "Fixed  Charges" shall mean, for any period,  for the Borrower
and  the  Designated  Subsidiaries,  on a  consolidated  basis,  the  sum of the
following for such period:  (a) cash Borrower Interest  Expense;  (b) mandatory,
permanent  scheduled  principal  repayments  with respect to Borrower  Debt; (c)
maintenance Capital  Expenditures;  (d) taxes payable; and (e) the amount of any
Restricted  Payments  made to Holdco or to the holders of minority  interests in
any of the Designated Subsidiaries.

                  "Foreign  Investments"  shall mean direct or indirect minority
Investments  by the Borrower in the Equity  Interests of Persons (other than any
Foreign  SpectraSite  Mexico   Investments)   organized  under  the  laws  of  a
jurisdiction  other than the United  States or any state thereof or the District
of  Columbia to the extent not  designated  by the  Borrower as an  Unrestricted
Investment.

                  "Foreign  Lender"  shall have the meaning set forth in Section
2.13 hereof.

                  "Foreign  SpectraSite Mexico Investments" shall mean direct or
indirect minority Investments by the Borrower in the Equity Interests of Persons
organized  under the laws of a jurisdiction  other than the United States or any
state thereof or the District of Columbia which  Investments  comprise a portion
of  SpectraSite  Mexico to the  extent  not  designated  by the  Borrower  as an
Unrestricted Investment.
                  "Foreign   SpectraSite   Mexico   Subsidiaries"   shall   mean
Subsidiaries of the Borrower  organized  under the laws of a jurisdiction  other
than the United  States or any state  thereof or the District of Columbia  which
Subsidiaries  comprise  a  portion  of  SpectraSite  Mexico  to the  extent  not
designated by the Borrower as an Unrestricted Subsidiary.

                  "Foreign  Subsidiaries"  shall  mean the  direct  or  indirect
Subsidiaries  of  the  Borrower  (other  than  any  Foreign  SpectraSite  Mexico
Subsidiaries) that are organized under the laws of a jurisdiction other than the
United States or any state thereof or the District of Columbia to the extent not
designated by the Borrower as an Unrestricted Subsidiary.

                  "Fund"  shall mean any Person  (other  than a natural  Person)
that is (or will  be)  primarily  engaged  in  making,  purchasing,  holding  or
otherwise  investing in commercial loans and similar extensions of credit in the
ordinary course of its business.

                                       14
   21

                  "Funded Debt" shall mean, with respect to any Person as of any
calculation  date,  the sum of the following as of such date:  (a) the principal
amount of all outstanding  Indebtedness  for money borrowed of such Person;  (b)
the principal amount of all  Indebtedness for money borrowed  Guaranteed by such
Person; (c) the stated amount of all letters of credit issued for the account of
such Person;  (d) all Capitalized Lease Obligations of such Person; and (e) if a
Default or Event of Default then exists hereunder or a default then exists under
any Interest Hedge  Agreements,  the net termination  payment  obligations under
such Interest Hedge Agreements.

                  "GAAP" shall mean generally accepted accounting  principles in
the United States, consistently applied.

                  "Governmental   Authority"   shall  mean  any   government  or
political  subdivision  of the United States or any other country or any agency,
authority,   board,   bureau,   central   bank,   commission,    department   or
instrumentality thereof or therein,  including,  without limitation,  any court,
tribunal, grand jury or arbitrator, in each case whether foreign or domestic, or
any  entity  exercising   executive,   legislative,   judicial,   regulatory  or
administrative  functions  of or  pertaining  to such  government  or  political
subdivision.

                  "Granting  Lender" shall have the meaning  assigned thereto in
Section 13.5(k).

                  "Guarantors" shall mean, collectively,  Holdco and each of the
Subsidiary Guarantors.

                  "Guaranty" or "Guaranteed," as applied to an obligation, shall
mean and include (a) a guaranty,  direct or indirect,  in any manner,  of all or
any  part  of  such  obligation,  and (b) any  agreement,  direct  or  indirect,
contingent or otherwise,  the practical  effect of which is to assure in any way
the   payment  or   performance   (or   payment  of  damages  in  the  event  of
non-performance)  of all or any  part of  such  obligation,  including,  without
limiting  the  foregoing,   any   reimbursement   obligations  with  respect  to
outstanding  letters  of  credit,  but not  including  any  endorsements  of any
instrument for collection in the ordinary course of business.

                  "Hazardous  Materials"  shall mean any substances,  materials,
compounds  or  wastes  defined,   listed,   or  subject  to  control  under  any
Environmental Law as being hazardous, toxic, extremely hazardous or dangerous.

                  "Holdco"  shall  have  the  meaning  assigned  thereto  in the
recitals to this Agreement.

                  "Holdco  6-3/4%  Convertible  Notes  (2010)"  shall  mean  the
unsecured  6-3/4%  Senior  Convertible  Notes  due 2010  issued  by Holdco in an
aggregate principal amount of $200,000,000, pursuant to the terms and conditions
of the applicable Holdco Notes Indenture.

                  "Holdco 10-3/4% Notes (2010)" shall mean the unsecured 10-3/4%
Senior  Notes due 2010  issued by Holdco  in an  aggregate  principal  amount of
$200,000,000,  pursuant to the terms and  conditions  of the  applicable  Holdco
Notes Indenture.

                  "Holdco 11-1/4% Notes (2009)" shall mean the unsecured 11-1/4%
Senior Discount Notes due 2009 issued by Holdco in an aggregate principal amount
at maturity of $586,800,000 (yielding $340,000,000 of gross proceeds to Holdco),
pursuant to the terms and conditions of the applicable Holdco Notes Indenture.

                                       15
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                  "Holdco 12% Notes  (2008)" shall mean the unsecured 12% Senior
Discount  Notes due 2008 issued by Holdco in an  aggregate  principal  amount at
maturity of  $225,200,000  (yielding  $125,000,000 of gross proceeds to Holdco),
pursuant to the terms and conditions of the applicable Holdco Notes Indenture.

                  "Holdco 12-1/2% Notes (2010)" shall mean the unsecured 12-1/2%
Senior  Notes due 2010  issued by Holdco  in an  aggregate  principal  amount of
$200,000,000  (yielding  $195,000,000 of gross proceeds to Holdco),  pursuant to
the terms and conditions of the applicable Holdco Notes Indenture.

                  "Holdco 12-7/8% Notes (2010)" shall mean the unsecured 12-7/8%
Senior Discount Notes due 2010 issued by Holdco in an aggregate principal amount
at maturity of $559,800,000 (yielding $300,000,000 of gross proceeds to Holdco),
pursuant to the terms and conditions of the applicable Holdco Notes Indenture.

                  "Holdco EBITDA" shall mean, for any period, for Holdco and its
Subsidiaries on a consolidated basis, the sum of (a) Holdco Net Income, plus (b)
to the extent deducted in determining  Net Income,  the result of (i) the sum of
each of the following for such period:  (A) Holdco Interest Expense,  (B) income
tax expense,  (C) depreciation and amortization,  (D) extraordinary  losses, (E)
all  other  non-cash  interest  or  charges  and  (F)   non-recurring   charges,
restructuring  charges,  transaction  expenses and underwriters' fees, less (ii)
extraordinary  gains and cash payments (not  otherwise  deducted in  determining
Holdco Net Income) made during such period with respect to non-cash charges that
were added back in a prior period;  provided,  however,  (I) with respect to any
Person that became a Subsidiary  of Holdco,  or was merged with or  consolidated
into Holdco or any Subsidiary of Holdco,  during such period, or the Acquisition
by Holdco or any of its  Subsidiaries of a substantial part of the assets of any
Person,   "EBITDA"  shall  also  include  (x)  the  EBITDA  of  such  Person  or
attributable  to such  assets,  as  applicable,  during  such  period as if such
Acquisition,  merger  or  consolidation  had  occurred  on the first day of such
period,  and  (y)  with  respect  to  any  Acquisition  by the  Borrower  or any
Designated  Subsidiary,  an amount equal to the projected  expense savings to be
realized by the Borrower or any such Subsidiary that is a Designated Subsidiary,
as the case may be, in connection with such Acquisition,  as demonstrated to the
satisfaction of and approved by the Lead Arrangers, and (II) with respect to any
Person that has ceased to be a Subsidiary of Holdco  during such period,  or any
material assets of Holdco or any of its Subsidiaries sold or otherwise  disposed
of by Holdco or any such Subsidiary  during such period,  "EBITDA" shall exclude
the EBITDA of such Person or attributable to such assets, as applicable,  during
such period as if such sale or disposition of such Subsidiary or such assets had
occurred on the first day of such period.

                  "Holdco  Interest  Expense"  shall mean,  for any period,  for
Holdco and its  Subsidiaries on a consolidated  basis, all interest expense paid
or accrued  in  respect  of Funded  Debt  (including,  without  limitation,  the
interest  component of payments for such period in respect of Capitalized  Lease
Obligations),  together with  recurring fees (in any event,  including,  without
limitation,  all fees due under Section 2.4 hereof) associated  therewith (other
than fees payable on or prior to the Agreement Date), after giving effect to any
Interest Hedge Agreements,  all as determined in accordance with GAAP, excluding
underwriting, arrangement and similar fees.

                                       16
   23

                  "Holdco   Net  Income"   shall   mean,   for  Holdco  and  its
Subsidiaries on a consolidated  basis, for any period,  net income determined in
accordance with GAAP.

                  "Holdco  Notes" shall mean,  collectively,  the Holdco  6-3/4%
Convertible  Notes (2010),  the Holdco 10-3/4% Notes (2010),  the Holdco 11-1/4%
Notes (2009),  the Holdco 12% Notes (2008),  the Holdco 12-1/2% Notes (2010) and
the Holdco 12-7/8% Notes (2010).

                  "Holdco Notes Indentures" shall mean,  collectively,  (a) that
certain Indenture dated as of June 26, 1998,  between Holdco, as issuer, and the
Indenture  Trustee,  in respect of the Holdco 12% Notes (2008), (b) that certain
Indenture  dated as of April  20,  1999,  between  Holdco,  as  issuer,  and the
Indenture  Trustee,  in respect of the Holdco  11-1/4%  Notes  (2009),  (c) that
certain Indenture dated as of March 15, 2000, between Holdco, as issuer, and the
Indenture  Trustee,  in respect of the Holdco  10-3/4%  Notes  (2010),  (d) that
certain Indenture dated as of March 15, 2000, between Holdco, as issuer, and the
Indenture  Trustee,  in respect of the Holdco  12-7/8%  Notes  (2010),  (e) that
certain Indenture dated as of November 20, 2000, in respect of the Holdco 6-3/4%
Convertible  Notes (2010),  and (f) that certain  Indenture dated as of December
20, 2000, in respect of the Holdco 12-1/2% Notes (2010).

                  "Holdco Pledge  Agreement" shall mean that certain Amended and
Restated Stock Pledge Agreement between Holdco and the Collateral Agent, for the
benefit of the Credit Parties,  dated as of the Agreement Date, in substantially
the form of Exhibit D attached  hereto,  pursuant to which Holdco has pledged to
the Collateral Agent all of the Equity Interests, whether now owned or hereafter
acquired by Holdco, in the Borrower.

                  "Incremental Facility  Commitments" shall mean,  collectively,
the aggregate  commitments of the Incremental  Facility Lenders to make Advances
of the  Incremental  Facility  Loans to the Borrower in accordance  with Section
2.16 hereof.

                  "Incremental Facility  Indebtedness" shall mean all principal,
interest, fees, and other amounts from time to time due or accrued in connection
with the Incremental Facility Loans.

                  "Incremental  Facility  Lenders" shall mean any lenders having
an Incremental Facility Commitment or making Incremental Facility Loans pursuant
thereto.

                  "Incremental  Facility Loans" shall mean the amounts  advanced
by the  Incremental  Facility  Lenders to the Borrower as  Incremental  Facility
Loans under the Incremental Facility Commitment, not to exceed the amount of the
Incremental  Facility  Commitment,  and  evidenced by the  Incremental  Facility
Notes.

                  "Incremental  Facility  Maturity Date" shall mean the maturity
date  for  the  Incremental  Facility  Loans  as  set  forth  in the  Notice  of
Incremental Facility Commitment applicable thereto.

                  "Incremental   Facility   Notes"  shall  mean  those   certain
Incremental Facility Notes described in Section 2.16 hereof.

                  "Indebtedness"  shall mean,  with  respect to any Person,  and
without duplication, (a) all indebtedness for money borrowed of such Person, (b)
all  obligations  of such Person for the deferred  purchase price (to the extent
determinable) of property or services (other than current trade payables

                                       17
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incurred in the ordinary course of such Person's business), provided that to the
extent any such  obligation  is reflected as a liability on the balance sheet of
such Person,  such obligation  shall in any event be considered  "Indebtedness",
(c) all  obligations  of such Person  evidenced by notes,  bonds,  debentures or
similar  instruments,   (d)  all  indebtedness  created  or  arising  under  any
conditional  sale or other title  retention  agreement  with respect to property
acquired by such Person  (even  though the rights and  remedies of the seller or
lender under such agreement in the event of default are limited to  repossession
or sale of such  property),  (e) all  obligations of such Person,  contingent or
otherwise,  as an account party or applicant under or in respect of acceptances,
letters of credit,  surety bonds or similar  arrangements,  (f) the  liquidation
value of all  redeemable  preferred  Equity  Interests of such  Person,  (g) all
direct or indirect  obligations of any other Person secured by any Lien to which
any  property  or asset  owned by such  Person is  subject,  whether  or not the
obligation  secured  thereby  shall  have been  assumed,  (h) to the  extent not
otherwise  included,  any Guaranty and all Capitalized Lease Obligations of such
Person and all  obligations  of such Person with respect to leases  constituting
part of a sale and lease-back arrangement and (i) net termination payments under
Interest Hedge Agreements.

                  "Indenture  Trustee" shall mean United States Trust Company of
New York, in its capacity as trustee under the Holdco Notes Indentures.

                  "Indemnified  Parties" shall mean those Persons eligible to be
indemnified  by the Borrower and the  Designated  Subsidiaries  pursuant to this
Agreement,  and  shall  include  each of the  Credit  Parties  and each of their
respective  employees,   representatives,   officers,   agents,   directors  and
Affiliates.

                  "Initial  Maturity  Date"  shall mean June 30,  2007,  or such
earlier date on which the payment of all  outstanding  Obligations in respect of
the  Revolving  Commitment  and the  Tranche A Loans  shall be due  (whether  by
acceleration or otherwise).

                  "Insolvency  Proceeding"  shall  mean,  with  respect  to  any
Person, any insolvency, receivership,  bankruptcy, dissolution,  liquidation, or
reorganization  proceeding,  or  any  other  proceeding,  whether  voluntary  or
involuntary,  by or against such Person,  under any bankruptcy or insolvency law
or  laws,  federal  or  state,   relating  to  the  relief  of  debtors  of  any
jurisdiction,  whether  now or  hereafter  in  effect,  and in any  out-of-court
composition,   assignment  for  the  benefit  of  creditors,   readjustment   of
Indebtedness, reorganization, extension or other debt arrangement of any kind.

                  "Intellectual   Property  Security   Agreements"  shall  mean,
collectively, (a) that certain Amended and Restated Trademark Security Agreement
between the Borrower  and the  Collateral  Agent,  for the benefit of the Credit
Parties,  dated as of the Agreement Date, in  substantially  the form of Exhibit
E-1 attached hereto,  (b) that certain  Subsidiary  Trademark Security Agreement
between each of the Subsidiary  Guarantors having any rights with respect to any
trademarks or trademark  registrations and the Collateral Agent, for the benefit
of the Credit Parties, dated as of the Agreement Date, in substantially the form
of Exhibit E-2 attached  hereto,  (c) that certain  Subsidiary  Patent  Security
Agreement  between  each of the  Subsidiary  Guarantors  having any rights  with
respect to any patents or patent registrations and the Collateral Agent, for the
benefit of the Credit Parties,  dated as of the Agreement Date, in substantially
the  form of  Exhibit  E-3  attached  hereto,  and (d)  any  similar  agreements
delivered pursuant to Section 6.15 hereof.

                                       18
   25

                  "Interest Hedge Agreements" shall mean any interest rate swap,
cap, collar, floor, caption or swaption agreements,  or any similar arrangements
designed to hedge the risk of variable  interest  rate  volatility  or to reduce
interest costs,  arising at any time between the Borrower,  on the one hand, and
any one or more of the Lenders,  or any other Person (other than an Affiliate of
the  Borrower),  on the other hand,  as such  agreement  or  arrangement  may be
modified, supplemented and in effect from time to time.

                  "Investment" shall mean, with respect to any Person, any loan,
advance or extension of credit (other than to customers, lessees or licensees in
the  ordinary  course of  business)  by such Person to, or any Guaranty or other
contingent liability with respect to the Equity Interests, Funded Debt, or other
obligations of, or any contributions to the capital of, any other Person, or any
ownership,  purchase or other  acquisition by such Person of any interest in any
Equity  Interests or other  securities of any such other  Person,  other than an
Acquisition; and "Invest," "Investing" or "Invested" shall mean the making of an
Investment.  "Investment"  shall  also  include  the  total  cost of any  future
commitment  or other  obligation  binding on any Person to make an Investment or
any subsequent Investment.

                  "Issuing Bank" shall mean the Administrative Agent, any Lender
or any of their respective  Affiliates,  in each case as issuer of any Letter of
Credit hereunder.

                  "L/C Obligations"  shall mean, at any date, the sum of (a) the
aggregate  amount then  available to be drawn under all  outstanding  Letters of
Credit and (b) the  aggregate  amount of drawings  under Letters of Credit which
have not then been  reimbursed  by the  Borrower  pursuant  to  Section  2.14(e)
hereof.

                  "L/C  Participants"  shall mean with  respect to any Letter of
Credit,  collectively,  all  of  the  Lenders  which  have  issued  a  Revolving
Commitment  other than the Swing Loan  Lender (in its  capacity  as a Swing Loan
Lender) or the applicable Issuing Bank.

                  "L/C  Participating  Interest"  shall mean with respect to any
Letter of Credit (a) in the case of the Issuing Bank with respect  thereto,  its
interest in such Letter of Credit and any Letter of Credit Application  relating
thereto after giving effect to the granting of participating  interests therein,
if any,  pursuant  hereto  and (b) in the  case of  each  L/C  Participant,  its
undivided  participating  interest  in such  Letter of Credit  and any Letter of
Credit Application relating thereto.

                  "Lead Arrangers" shall mean, collectively, CIBC World Markets
Corp.  and CSFB in their  respective  capacities  as lead  arrangers  under this
Agreement.

                  "Lender  Addendum"  shall  mean,  with  respect to any initial
Lender,  a Lender  Addendum,  substantially  in the form of  Exhibit F  attached
hereto,  to be executed and  delivered by such Lender on the  Agreement  Date as
provided in Section 13.18 hereof.

                  "Lenders"  shall  mean  the  financial  institutions  or other
entities  that from time to time  become  parties to this  Agreement  as Lenders
(including the Swing Loan Lender).

                  "Letter of Credit  Application"  shall mean an  application in
such form as an  Issuing  Bank may  specify  from time to time  requesting  such
Issuing Bank to issue a Letter of Credit.

                                       19
   26

                  "Letter of Credit Committed Amount" shall mean $50,000,000.

                  "Letters  of Credit"  shall mean any and all letters of credit
issued by any Issuing Bank for the account of the  Borrower  pursuant to Section
2.14 of this Agreement.

                  "Lien" shall mean, with respect to any property, any mortgage,
lien,  pledge,  negative  pledge or other  agreement not to pledge,  assignment,
charge, security interest, title retention agreement, levy, execution,  seizure,
attachment,  garnishment or other similar  encumbrance of any kind in respect of
such property,  whether created by statute,  contract,  common law or otherwise,
and whether choate or inchoate, vested or perfected.

                  "Loan  Documents"  shall  mean,   without   limitation,   this
Agreement,   the  Notes,  the  Security  Documents,   the  Nextel  Intercreditor
Agreement,  all Requests  for  Advance,  all Requests for Issuance of Letters of
Credit, all Swing Loan Requests, the Certificate of Financial Condition, the Use
of Proceeds Letter, all Performance  Certificates,  all Letters of Credit issued
hereunder,  all Interest  Hedge  Agreements  with a Lender or any Affiliate of a
Lender,  any fee letters executed by the Borrower in favor of the Administrative
Agent with respect to certain fees payable in connection with the administration
of  this  Agreement,   and  any  other  document  or  agreement  or  certificate
(including,  without  limitation,  any legal  opinion  issued by counsel for the
Borrower or any of its Affiliates and any reliance letter issued with respect to
any such legal opinion) executed or delivered in connection with or contemplated
by this Agreement.

                  "Loans" shall mean,  collectively,  the Revolving  Loans,  the
Swing Loans, the Term Loans and, if applicable, the Incremental Facility Loans.

                  "Lodestar Acquisition Documents" shall mean that certain Stock
Purchase  Agreement dated as of April 12, 2000, between the Borrower and LeBlanc
& Royale  Enterprises,  Inc., a corporation  organized under the laws of Canada,
together with all exhibits and schedules  thereto and all documents  executed in
connection therewith.

                  "Majority  Lenders"  shall mean (i) prior to the occurrence of
an Event of Default and the termination of Unfunded Commitments, Lenders the sum
of whose Unfunded  Commitments plus Loans outstanding equals or exceeds 50.1% of
the sum of such items for all Lenders,  or (ii) at any time that there exists an
Event of Default  hereunder,  and  Unfunded  Commitments  have been  terminated,
Lenders the total of whose Loans (including, with respect to each Revolving

                                       20
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Lender,  such  Lender's  participating  interest  in the Swing  Loans,  and with
respect to each L/C Participant,  the amount of its L/C Participating  Interest)
outstanding  equals or exceeds 50.1% of the total principal  amount of the Loans
and the L/C Participating Interests then outstanding hereunder.

                  "Majority  Pro  Rata  Lenders"  shall  mean  (i)  prior to the
occurrence of an Event of Default and the  termination of Unfunded  Commitments,
Lenders the sum of whose Unfunded  Commitments (other than Incremental  Facility
Commitments  structured  as an  institutional  tranche)  plus Loans  (other than
Tranche B Loans and Incremental  Facility Loans structured as Tranche B Loans or
another institutional tranche) outstanding equals or exceeds 50.1% of the sum of
such items for all  Lenders,  or (ii) at any time that there  exists an Event of
Default hereunder,  and Unfunded  Commitments have been terminated,  Lenders the
total of whose Loans (other than Tranche B Loans and Incremental  Facility Loans
structured as Tranche B Loans or another institutional tranche) (including, with
respect to each Revolving Lender,  such Lender's  participating  interest in the
Swing  Loans,  and with respect to each L/C  Participant,  the amount of its L/C
Participating  Interest)  outstanding  equals  or  exceeds  50.1%  of the  total
principal  amount  of the Loans  (other  than  Tranche  B Loans and  Incremental
Facility Loans structured as Tranche B Loans or another  institutional  tranche)
and the L/C Participating Interests then outstanding hereunder.

                  "Majority  Tranche  B  Lenders"  shall  mean (i)  prior to the
occurrence of an Event of Default and the  termination of Unfunded  Commitments,
Lenders the sum of whose Unfunded Commitments consisting of Incremental Facility
Commitments  structured  as an  institutional  tranche  plus Tranche B Loans and
Incremental   Facility   Loans   structured   as  Tranche  B  Loans  or  another
institutional  tranche  outstanding  equals or exceeds  50.1% of the sum of such
items for all Lenders, or (ii) at any time that there exists an Event of Default
hereunder,  and Unfunded Commitments have been terminated,  Lenders the total of
whose Tranche B Loans and  Incremental  Facility  Loans  structured as Tranche B
Loans or another  institutional  tranche  outstanding equals or exceeds 50.1% of
the total principal amount of the Tranche B Loans and Incremental Facility Loans
structured as Tranche B Loans or another  institutional tranche then outstanding
hereunder.

                  "Mandatory  Borrowing" shall have the meaning given thereto in
Section 2.15(b) hereof.

                  "Managing Agents" shall mean, collectively, Barclays Bank plc,
Bank of New York, Deutsche Bank, Rabobank, General Electric Capital Corporation,
and The Bank of Nova Scotia.

                  "Material  Contracts"  shall have the meaning assigned thereto
in Section 5.1(y) hereof.

                  "Material Towers" shall mean, as of any date of determination,
any Tower or any group or set of Towers  wheresoever  located to which more than
ten percent  (10%) of  Annualized  EBITDA for the twelve (12) month  period most
recently ended is attributable.

                  "Materially  Adverse  Effect"  shall  mean  (a)  any  material
adverse effect upon the business, operations,  properties,  condition (financial
or otherwise), capitalization, assets or liabilities or results of operations of
the  Restricted  Group taken as a whole,  or upon the ability of the  Restricted
Group,  taken as a whole, to conduct the Tower  Operations,  or (b) any material
adverse effect upon the business, operations,  properties,  condition (financial
or otherwise), capitalization, assets or liabilities or results of operations of
the  Borrower  and the  Designated  Subsidiaries  taken as a whole,  or upon the
ability of the Borrower and the Designated  Subsidiaries,  taken as a whole,  to
conduct the Tower Operations,  or (c) a material adverse effect upon the binding
nature,  validity, or enforceability of this Agreement,  the Notes and the other
Loan  Documents  or upon the ability of the  Borrower  or any of the  Designated
Subsidiaries  to perform the payment  obligations or other material  obligations
under this Agreement or any other Loan Document, or upon the rights, benefits or
interests  of the  Lenders in and to the Loans or the  rights of the  Collateral
Agent in the  Collateral;  in any case,  whether  resulting from any single act,
omission,  situation, status, event or undertaking, or taken together with other
such acts, omissions, situations, statuses, events or undertakings.

                                       21
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                  "Maturity Date" shall mean, with respect to all amounts owing,
or  Advances  made,  under  (a)  the  Revolving  Commitment  or  the  Tranche  A
Commitment,  the Initial Maturity Date, (b) the Tranche B Commitment,  the Final
Maturity  Date and (c) any  Incremental  Facility  Commitment,  the  Incremental
Facility Maturity Date applicable thereto.

                  "Mortgage" shall mean any mortgage,  deed to secure debt, deed
of trust, or other instrument  encumbering or transferring  title (in fee simple
or leasehold) to real property, in form and substance reasonably satisfactory to
the  Administrative  Agent,  by  which  the  Borrower  or any of the  Subsidiary
Guarantors  grants a mortgage to the  Collateral  Agent,  for the benefit of the
Credit  Parties,  in  real  estate  owned  or  leased  by the  Borrower  or such
Subsidiary  Guarantor,  in  each  case  to the  extent  delivered  prior  to the
Agreement Date or as otherwise required by this Agreement.

                  "Mortgage  Default" shall have the meaning assigned thereto in
the Mortgages.

                  "Multiemployer  Plan"  shall  have the  meaning  set  forth in
Section 4001(a)(3) of ERISA.

                  "Necessary   Authorizations"   shall  mean  any  local  zoning
ordinances and any rights,  whether based upon any agreement,  statute, order or
otherwise,    licenses,    authorizations,    permits,   consents,    approvals,
registrations,  certificates,  agreements,  permits or other  rights filed with,
granted  by or  entered  into  by a  federal  or  state  governmental  authority
(including,  without limitation,  the FAA and the FCC) which permit or authorize
the construction or maintenance of a Tower or the use of a Tower by the Borrower
or any of the  Designated  Subsidiaries  for wireless  communications  purposes,
together with any amendment, modification or replacement with respect thereto.

                  "Net Income" shall mean,  for the Borrower and the  Designated
Subsidiaries on a consolidated  basis, for any period,  net income determined in
accordance with GAAP.

                  "Net Cash Proceeds"  shall mean, with respect to (i) any sale,
lease, transfer or other disposition (including, without limitation, by casualty
loss  or  condemnation)  of  Assets  by the  Borrower  or any of the  Designated
Subsidiaries,  or (ii) any  receipt  from  Holdco by the  Borrower or any of the
Designated  Subsidiaries  of the  proceeds  from the  issuance  by Holdco of any
Equity  Interests  or other debt or equity  securities  (in any event,  a "Sales
Transaction"),  the  aggregate  amount of cash  received by the Borrower or such
Designated  Subsidiary  for  such  Assets  or  securities  (including,   without
limitation,  any  payments  received  in respect of  covenants  not to  compete,
consulting or management  fees,  and any portion of the amount  received in cash
upon payment of a buyer promissory note or other evidence of Indebtedness),  net
of  (a)  taxes  payable  with  respect  to  any  such  Sales  Transaction,   (b)
contingencies with respect to any such Sales Transaction, appropriately reserved
for by the Borrower or the  applicable  Designated  Subsidiary  under GAAP,  (c)
reasonable and customary  transaction costs properly  attributable to such Sales
Transaction  and payable by the Borrower or any of the  Designated  Subsidiaries
(other  than  to an  Affiliate)  in  connection  with  such  Sales  Transaction,
including, without limitation, sales commissions and underwriting discounts, and
(d) all payments made on any Indebtedness which is secured by any Assets subject
to such Sales Transaction in accordance with the terms of any Lien upon or other
security  arrangement of any kind with respect to such Assets,  or which must by
its terms, or in order to obtain a necessary  consent to such Sales  Transaction
or by Applicable Law be repaid out of the proceeds from such Sales Transaction.

                                       22
   29

                  "New  Affiliated  Equity"  shall  mean the sum of any  amounts
Invested by Holdco in the Borrower or any of the Designated Subsidiaries, in the
form of a  common  equity  contribution  or  issuance,  in  connection  with the
issuance of any Equity Interests or Permitted Debt by Holdco after the Agreement
Date.

                  "Nextel" shall  mean  Nextel  Communications, Inc., a Delaware
corporation.

                  "Nextel  Acquisition"  shall mean the Acquisition of the Tower
Assets and certain build rights pursuant to the Nextel Acquisition Documents.

                  "Nextel Acquisition Documents" shall mean,  collectively,  the
Nextel Master Site Lease Agreement, the Nextel Master Site Commitment Agreement,
the Nextel  Subordinated  Security Agreement,  the Nextel Merger Agreement,  the
Nextel Partners Master Site Lease Agreement, the Real Estate Side Letter and the
Nonassignable Contracts Agreements.

                  "Nextel  Collateral" shall mean the "Collateral," as that term
is defined in the Nextel Subordinated Security Agreement.

                  "Nextel  Intercreditor  Agreement"  shall  mean  that  certain
Intercreditor  and  Subordination  Agreement among the Collateral  Agent,  Tower
Parent  Corp.,  the Nextel  Tenants  (other than Nextel  Partners),  TAS and the
Borrower,  dated as of the  Original  Closing  Date, a copy of which is attached
hereto as Exhibit G.

                  "Nextel  Master  Site  Commitment  Agreement"  shall mean that
certain Master Site Commitment Agreement, dated as of the Original Closing Date,
among Nextel,  the Nextel  Tenants  (other than Nextel  Partners),  Tower Parent
Corp., Holdco and TAS.

                  "Nextel Master Site Lease  Agreement"  shall mean that certain
Master Site Lease  Agreement,  dated as of the Original  Closing Date, among the
Nextel Tenants (other than Nextel Partners) and TAS.

                  "Nextel Merger  Agreement"  shall mean that certain  Agreement
and Plan of Merger  dated as of February  10,  1999,  as amended on the Original
Closing Date, among Nextel, Tower Parent Corp., Tower Merger Vehicle, Inc., TAS,
the Nextel Tenants (other than Nextel  Partners),  Holdco,  the Borrower and SHI
Merger Sub, Inc., a Delaware corporation.

                  "Nextel Partners" shall mean Nextel Partners Operating Corp.,
a Delaware corporation.


                  "Nextel  Partners Master Site Lease Agreement" shall mean that
certain Master Site Lease  Agreement  dated as of January 4, 2000,  among Nextel
Partners, TAS, the Borrower and the Landlord Parties (as defined therein).

                  "Nextel Related Parties" shall mean, collectively, Nextel, the
Nextel Tenants and their respective Subsidiaries.

                  "Nextel  Subordinated  Lien"  shall  mean  that  certain  Lien
granted by TAS in favor of Tower Parent  Corp.,  as secured party for itself and
on behalf of other  beneficiaries  thereof, on the Nextel Collateral pursuant to
the Nextel Subordinated Security Agreement, which Lien is subordinated pursuant

                                       23

   30
to the terms and conditions of the Nextel Intercreditor Agreement to the Lien in
the Nextel  Collateral in favor of the Collateral  Agent, for the benefit of the
Credit Parties.

                  "Nextel  Subordinated  Security  Agreement"  shall  mean  that
certain Security and Subordination  Agreement,  dated as of the Original Closing
Date,  between TAS, as assignor,  and Tower Parent  Corp.,  as secured party for
itself and on behalf of other beneficiaries thereof.

                  "Nextel Tenants" shall mean, collectively, Nextel of New York,
Inc., a Delaware corporation, Nextel Communications of the Mid-Atlantic, Inc., a
Delaware  corporation,  Nextel South  Corp.,  a Georgia  corporation,  Nextel of
Texas, Inc., a Texas corporation, Nextel West Corp., a Delaware corporation, and
Nextel  of  California,   Inc.,  a  Delaware  corporation,   each  d/b/a  Nextel
Communications,  Nextel  Partners and each other Nextel  Related Party that is a
tenant  under the Nextel  Master  Site Lease  Agreement  or the Nextel  Partners
Master Site Lease Agreement.

                  "Nonassignable Contracts Agreements" shall mean, collectively,
all Nonassignable  Contracts Agreements,  dated as of the Original Closing Date,
among a Nextel Tenant, Tower Parent Corp. and TAS.

                  "Non-Disturbance  Agreement"  shall  mean  any  Subordination,
Non-Disturbance  and  Attornment  Agreement,  in form and  substance  reasonably
satisfactory  to the  Administrative  Agent,  among the  Borrower  or any of the
Designated Subsidiaries,  the Collateral Agent and a tenant leasing space on any
Tower from the Borrower or such Designated Subsidiary.

                  "Notes" shall mean,  collectively,  the Revolving  Notes,  the
Swing Loan Notes,  the Term Notes and, if applicable,  the Incremental  Facility
Notes.

                  "Notice  of  Conversion/Continuation"  shall  mean a notice in
substantially the form of Exhibit H attached hereto.

                  "Notice of  Incremental  Facility  Commitment"  shall have the
meaning set forth in Section 2.16(b) hereof.

                  "NTA" shall mean NTA, LLC, a Massachusetts  limited  liability
company.

                  "NTA Investment"  shall mean the Investment by the Borrower in
Concourse  Communications  (including  the  staged  purchase  of the  issued and
outstanding  Equity  Interests of, and the making of certain loans to, Concourse
Communications) pursuant to the NTA Investment Documents, in an aggregate amount
not to exceed during the term of this Agreement the sum of (a) $8,400,000, which
is the aggregate amount of the Borrower's Investment in Concourse Communications
as of the Agreement  Date,  plus (b) the amount of any New Affiliated  Equity to
the extent allocated solely to this purpose, plus (c) $50,000,000.

                  "NTA Investment Documents" shall mean, collectively,  (a) that
certain  Operating  Agreement dated as of August 30, 1999,  between the Borrower
and NTA, (b) that certain Loan  Agreement  dated as of August 30, 1999,  between
the Borrower and  Concourse,  together with all exhibits and schedules  thereto,
(c) that certain  Security  Agreement  dated as of August 30, 1999,  between the
Borrower and Concourse Communications,  together with all exhibits and schedules
thereto,  (d) that certain Loan Agreement  dated as of August 30, 1999,  between
Concourse Communications and New York Telecom Partners, LLC, together with all

                                       24
   31

exhibits and schedules thereto,  (e) that certain Security Agreement dated as of
August 30, 1999, between Concourse and New York Telecom Partners,  LLC, together
with all exhibits and schedules thereto, and (f) all other documents executed by
the Borrower in connection with the NTA Investment.

                  "Obligations"  shall  mean  (a) all  payment  and  performance
obligations of every kind, nature and description of Holdco,  the Borrower,  the
Designated Subsidiaries,  and any other obligors to the Credit Parties (or their
respective Affiliates in the case of Interest Hedge Agreements), or any of them,
under  this  Agreement  and  the  other  Loan  Documents   (including,   without
limitation, any interest, fees, costs, expenses and other charges accruing after
any Insolvency  Proceeding of Holdco, the Borrower or any Designated  Subsidiary
commences  regardless of whether such interest,  fees, costs,  expenses or other
charges are deemed  allowed or recoverable in such  Insolvency  Proceeding),  as
they may be  amended  from time to time,  or as a result of  making  the  Loans,
whether such obligations are direct or indirect,  absolute or contingent, due or
not due,  contractual  or  tortious,  liquidated  or  unliquidated,  arising  by
operation of law or otherwise,  now existing or hereafter  arising,  and (b) the
obligation  to pay an amount equal to the amount of any and all damage which the
Credit  Parties (or their  respective  Affiliates in the case of Interest  Hedge
Agreements),  or any of them,  may suffer by reason of a breach by  Holdco,  the
Borrower,  any of the  Designated  Subsidiaries  or any  other  obligor,  of any
obligation,  covenant or undertaking with respect to this Agreement or any other
Loan Document.

                  "Original Closing Date" shall mean April 20, 1999.

                  "Original Nextel Towers" shall mean those Towers acquired from
the Nextel Related  Parties on the Original  Closing Date as to which any of the
Nextel  Tenants  is the  anchor  tenant  and which  are  subject  to the  Nextel
Subordinated Lien.

                  "Other  Operations"  shall mean all businesses (other than the
Tower  Operations) of the Borrower and the Designated  Subsidiaries,  including,
without  limitation,  to the extent not included in the Tower Operations,  their
Tower Site acquisition and Tower Site management businesses.

                  "Participants"  shall  have the  meaning  assigned  thereto in
Section 13.5(b) hereof.

                  "Payment  Date"  shall  mean the  last  day of any  Eurodollar
Advance Period.

                  "PBGC" shall mean the Pension Benefit Guaranty Corporation, or
any successor thereto.

                  "Performance  Certificate"  shall  mean  a  certificate  of  a
Financial  Officer  of  the  Borrower  as  to  its  financial  performance,   in
substantially the form attached hereto as Exhibit I.

                  "Permitted  Acquisition  Documents"  shall mean all  documents
executed  by  Holdco,  the  Borrower  or  any of the  Subsidiary  Guarantors  in
connection with a Permitted Acquisition or a Permitted Investment.

                  "Permitted  Acquisitions"  shall mean Acquisitions made by the
Borrower or any of the Designated  Subsidiaries  as and to the extent  permitted
under Section 8.5 hereof.

                  "Permitted  Canadian  Investments"  shall mean,  collectively,
Acquisitions   of,  and  Investments  in,  Canadian   Subsidiaries  and  Foreign
Investments, which Foreign Investments are Persons organized under the laws of

                                       25
   32

Canada,  made  by the  Restricted  Group  (directly  or  indirectly)  after  the
Agreement  Date in an  aggregate  amount  not to exceed  during the term of this
Agreement the sum of (a) $10,000,000,  plus (b) the amount of any New Affiliated
Equity to the extent allocated solely to this purpose.

                  "Permitted  Debt"  shall  mean  Indebtedness  permitted  to be
incurred and to remain  outstanding  by Holdco,  the Borrower and the Designated
Subsidiaries, pursuant to Section 8.1 hereof.

                  "Permitted   Dispositions"   shall  mean  the  sale  or  other
disposition of Assets by the Borrower or any of the Designated  Subsidiaries  as
and to the extent permitted under Section 8.5 hereof.

                  "Permitted  High-Yield  Securities" shall mean,  collectively,
(a) preferred equity securities issued by the Borrower or Holdco,  and (b) other
debt  securities  issued  by Holdco  (including,  without  limitation,  any debt
securities  convertible into Equity  Interests of Holdco),  as an "add-on" under
the Holdco Notes Indentures or otherwise,  upon the Borrower's  demonstration to
the Lead Arrangers of pro forma compliance with this Agreement through the Final
Maturity Date; provided,  however,  that if such equity securities are issued by
the  Borrower,  such equity  securities  shall have no  creditor-like  rights or
remedies; provided further, however, that in each case, the terms and conditions
of such  securities  (i) shall not be  substantially  more  onerous  (taken as a
whole) on Holdco or the Borrower  than the terms of the Holdco Notes  Indentures
(except for an  increase  in the  interest  rate  payable  thereon to the extent
provided in clauses  (ii)(A)(II)  and (ii)(B)  below);  and (ii) shall  provide,
among other things,  that (A) in the case of discount notes,  neither  dividends
nor  interest  shall  be  payable  (I) in cash at any time  prior  to the  third
anniversary  of the  Agreement  Date or (II) at a coupon no greater than fifteen
percent (15%); (B) in the case of any such debt or equity securities with a cash
pay component thereof,  the aggregate  principal amount thereof and the interest
or dividend  rate  applicable  thereto  shall be no greater  than the  principal
amount  and/or the interest or dividend  rate with respect to which the Borrower
shall have provided the Credit Parties with revised Projections, satisfactory to
the Lead Arrangers,  assuming issuance of such Permitted  High-Yield  Securities
and taking into  account any  Restricted  Payments  permitted to be made to make
interest  or  dividend  payments  with  respect  to  such  Permitted  High-Yield
Securities and  demonstrating  pro forma compliance with this Agreement  through
the Final  Maturity Date;  and (C) such  securities  shall have no required cash
redemptions  (other than customary  change of control and asset sale  redemption
provisions) or principal maturities prior to the day after the first anniversary
of the Final Maturity Date.

                  "Permitted  Investments"  shall mean Investments  described in
and permitted to be made under Section 8.2 hereof.

                  "Permitted Liens" shall mean, as applied to any Person:

                  (a)      Any Lien  in favor of the Collateral  Agent given  to
secure the Obligations;

                  (b) (i) Liens on real  estate  for real  estate  taxes not yet
delinquent  and (ii)  Liens  for  taxes,  assessments,  judgments,  governmental
charges or levies or claims not yet  delinquent or the  non-payment  of which is
being  diligently  contested in good faith by  appropriate  proceedings  and for
which reserves in conformity with GAAP have been set aside on such Person's

                                       26
   33

books,  but  only  so  long  as  no  foreclosure,  distraint,  sale  or  similar
proceedings have been commenced with respect thereto;

                  (c) Liens of  landlords,  carriers,  warehousemen,  mechanics,
laborers,  vendors  (solely  to the  extent  arising  by  operation  of law) and
materialmen  and  other  statutory  Liens  incurred  in the  ordinary  course of
business  for  sums  that  are not more  than  sixty  (60)  days  delinquent  in
accordance  with  their  terms or that are being  diligently  contested  in good
faith, if reserves or appropriate provisions shall have been made therefor;

                  (d)      Liens incurred in the ordinary course of business in
connection with worker's compensation and unemployment insurance or other social
security programs;

                  (e) Easements, rights-of-way, restrictions, survey exceptions,
zoning, land use and environmental restrictions,  and other similar encumbrances
on the use of real property which do not materially  interfere with the ordinary
conduct of the business of such Person or materially detract from the utility or
value of such real property,  or Liens incidental to the conduct of the business
of such Person or to the ownership of its properties  which were not incurred in
connection with  Indebtedness or other  extensions of credit and which do not in
the aggregate materially detract from the value of such properties or materially
impair their use in the operation of the business of such Person;

                  (f)      the Nextel Subordinated Lien;

                  (g) Liens securing  conditional sale, rental or purchase money
obligations permitted to be incurred pursuant to Section 8.1(i) hereof, but only
in the property that is the subject of such obligation;

                  (h) Liens  granted  to secure  the  performance  of letters of
credit,  bids,  tenders,  contracts,  leases,  public or statutory  obligations,
surety,  customs,  appeal and  performance  bonds and other similar  obligations
incurred in the ordinary  course of business and not incurred in connection with
the borrowing of money;

                  (i)      leasehold and license rights and interests granted to
third parties in respect of the Tower Assets;

                  (j)  Liens  in  favor  of the  Borrower  or any  wholly  owned
Restricted  Subsidiary  of the Borrower,  and Liens of any Domestic  SpectraSite
Mexico Subsidiary or any Foreign  SpectraSite  Mexico Subsidiary in favor of any
wholly owned Domestic  SpectraSite Mexico Subsidiary or any wholly owned Foreign
SpectraSite Mexico  Subsidiary,  and Liens of any Foreign Subsidiary (other than
any Canadian  Subsidiary) in favor of any wholly owned Foreign Subsidiary (other
than any Canadian Subsidiary),  and Liens of any Canadian Subsidiary in favor of
any wholly owned Canadian Subsidiary;

                  (k)      any interest in or title of a lessor to any property
subject to a Capitalized  Lease Obligation  permitted to be incurred pursuant to
Section 8.1(b) hereof;

                  (l)      normal provisions in agreements and leases that
restrict the assignment of such agreement or lease;

                                       27
   34

                  (m) negative  pledges and other agreements not to create Liens
contained in the Holdco Notes  Indentures,  any Permitted High Yield  Securities
and any other Permitted Debt;

                  (n)      Liens on Tower Sites leased by the Borrower or any of
the Designated Subsidiaries granted by the fee owner thereof;

                  (o)      rights of first refusal, options and related rights
set forth in any Tower Site Lease Agreement or Tower Space Lease Agreement;

                  (p)      in the case of Holdco, Liens granted by Holdco on the
Equity  Interests  owned by Holdco in any of its  Subsidiaries  (other  than the
Borrower and the Designated Subsidiaries);

                  (q)      normal and customary rights of set-off upon deposits
of cash in favor of banks and other depository institutions;

                  (r) Liens  attaching to cash earnest  money  deposits  made in
connection  with any  letter of intent or  purchase  agreement  entered  into in
connection with a Permitted Acquisition;

                  (s)      judgment Liens not giving rise to an Event of Default
; and

                  (t) Liens on the property or assets of a Person that becomes a
Designated  Subsidiary,  or on any property or assets of another Person acquired
by the Borrower or any Designated  Subsidiary,  in each case after the Agreement
Date,  provided  that (i) such Liens  existed at the time such  Person  became a
Designated  Subsidiary or at the time such property or assets were acquired,  as
applicable,  and were not created,  incurred or assumed in  anticipation of such
acquisition, (ii) any such Lien of a Person that becomes a Designated Subsidiary
is not  expanded to cover any property or assets of such Person  acquired  after
the time such Person became a Designated  Subsidiary (other than proceeds of the
existing collateral in accordance with the instrument creating such Lien), (iii)
any such Lien does not extend to any property or assets owned by the Borrower or
any of the other Designated  Subsidiaries or any other property or assets of the
Designated Subsidiary acquiring the property or assets subject to such Lien, and
(iv) the aggregate  fair market value of property and assets subject to all such
Liens  shall  not at any  time  exceed  $10,000,000  during  the  term  of  this
Agreement.

                  "Permitted  Mexican  Investments"  shall  mean,  collectively,
Investments  made after the Agreement Date by the Restricted  Group (directly or
indirectly) in SpectraSite  Mexico in an amount not to exceed,  in the aggregate
during  the term of this  Agreement,  the sum of (a)  $50,000,000,  plus (b) the
amount of any New  Affiliated  Equity  to the  extent  allocated  solely to this
purpose.

                  "Person"  shall  mean  an  individual,   corporation,  limited
liability company, association,  partnership, joint venture, trust or estate, an
unincorporated organization, a government or any agency or political subdivision
thereof, or any other entity.

                  "Plan"  shall mean,  with  respect to any Person,  an employee
benefit plan within the meaning of Section 3(3) of ERISA sponsored or maintained
by or contributed to by such Person for the benefit of employees of such Person,
but excluding any Multiemployer Plan.

                                       28
   35

                  "Prime  Rate"  shall mean,  at any time,  the rate of interest
adopted by the Administrative  Agent as its reference rate for the determination
of interest  rates for loans of varying  maturities in United States  dollars to
United States residents of varying degrees of creditworthiness  and being quoted
at such time by the Administrative  Agent as its "prime rate." The Prime Rate is
not  necessarily  the  lowest  rate of  interest  charged  to  borrowers  of the
Administrative Agent or its Affiliates.

                  "Prior  Credit  Agreement"  shall  have the  meaning  assigned
thereto in the recitals to this Agreement.

                  "Projections"  shall  have the  meaning  set forth in  Section
4.1(d) hereof.

                  "Property" shall mean any real property or personal  property,
plant,  building,  facility,  structure,   underground  storage  tank  or  unit,
equipment, inventory or other asset owned, leased or operated by Borrower or any
of the Designated Subsidiaries (including, without limitation, any surface water
thereon or adjacent thereto, and soil and groundwater thereunder).

                  "Purchase  Price" shall mean,  with respect to each  Permitted
Acquisition and each Permitted  Disposition,  the total consideration payable in
connection with such Permitted Acquisition or Permitted Disposition, as the case
may be, whether payable in cash, securities,  by a note or other property, or by
the assumption of  Indebtedness  (including,  without  limitation,  all forms of
deferred compensation, such as non-compete, consulting and similar agreements).

                  "Real  Estate  Side  Letter"  shall mean that  certain  Letter
Agreement,  dated as of the Original  Closing Date, from Nextel and agreed to by
Tower Parent Corp., Tower Merger Vehicle, Inc., TAS, each of the Nextel Tenants,
the Borrower, Holdco and SHI Merger Sub, Inc.

                  "Register"  shall have the meaning assigned thereto in Section
13.5(d) hereof.

                  "Reportable Event" shall have the meaning set forth in Section
4043 of ERISA, other than an event for which the reporting  requirement has been
waived by regulations promulgated under such Section.

                  "Request for Advance" shall mean a certificate designated as a
"Request  for  Advance,"  signed  by an  Authorized  Signatory  of the  Borrower
requesting  an Advance  (other than a Swing Loan)  hereunder,  which shall be in
substantially  the form of Exhibit J attached  hereto  and  shall,  among  other
things, (a) specify the date of the Advance,  which shall be a Business Day, the
amount of the Advance,  the type of Advance,  and,  with respect to a Eurodollar
Advance, the Eurodollar Advance Period selected by the Borrower,  (b) state that
there  shall not exist,  on the date of the  requested  Advance  both before and
after giving effect thereto, any Default or Event of Default, and (c) the use of
the proceeds of the Advance being requested.

                                       29
   36

                  "Request  for  Issuance  of Letter of  Credit"  shall mean any
certificate signed by an Authorized Signatory of the Borrower, which certificate
will be denominated a "Request for Issuance of Letter of Credit" and shall be in
substantially  the form  attached  hereto as Exhibit K, and shall,  among  other
things,  (a) specify  the  beneficiary  of the  proposed  Letter of Credit,  the
purpose of the Letter of Credit,  the proposed date of issuance of the Letter of
Credit, which shall be a Business Day, and the documents which must be presented
to draw  under  such  Letter  of  Credit  (including,  without  limitation,  any
documents which the Issuing Bank may require), (b) include, as an attachment,  a
Letter of Credit  Application,  and (c) state that there shall not exist, on the
date of the request  and after  giving  effect to the  issuance of the Letter of
Credit, any Default or Event of Default hereunder.

                  "Restricted Group" shall mean, collectively,  the Borrower and
the Restricted Subsidiaries.

                  "Restricted   Investments"   shall  mean  direct  or  indirect
minority  Investments by the Borrower in the Equity  Interests of Persons (other
than Concourse  Communications or any Domestic  SpectraSite Mexico  Investments)
organized  under  the laws of the  United  States or any  state  thereof  or the
District  of  Columbia,  to  the  extent  not  designated  by  the  Borrower  as
Unrestricted Investments.

                  "Restricted  Payment"  shall mean (a) any  direct or  indirect
distribution,  dividend, redemption or other payment to any Person on account of
any  Equity  Interests  or  other  securities  of  the  Borrower  or  any of the
Designated  Subsidiaries;  (b) any  payment of  principal  of or interest on any
Indebtedness  of any of the Borrower or any of the  Designated  Subsidiaries  in
favor of any Affiliate  other than pursuant to this  Agreement or the other Loan
Documents;  or (c) any payment under any  management or consulting  agreement or
other  similar  agreement or  arrangement  with an Affiliate of the Borrower not
entered into in the ordinary course of business.

                  "Restricted Purchase" shall mean any payment on account of the
purchase,  redemption or other acquisition or retirement of any Equity Interests
or other  securities  of the  Borrower  or any of the  Designated  Subsidiaries,
including,  without  limitation,  any  warrants  or other  rights or  options to
acquire Equity Interests of the Borrower or any of the Designated Subsidiaries.

                  "Restricted  Subsidiaries"  shall mean the direct or  indirect
Subsidiaries  of the  Borrower  (other  than  Concourse  Communications  and any
Domestic SpectraSite Mexico Subsidiaries) organized under the laws of the United
States or any state  thereof  or the  District  of  Columbia  to the  extent not
designated by the Borrower as Unrestricted Subsidiaries.

                  "Revolving  Commitment" shall mean the several  obligations of
certain of the Lenders to advance the sum of up to  $350,000,000 to the Borrower
in accordance with their respective  Revolving  Commitment Ratios and as reduced
from time to time, all pursuant to the terms hereof.

                  "Revolving  Commitment  Ratio" shall mean, with respect to any
Lender, the ratio, expressed as a percentage, of (i) the Revolving Commitment of
such Lender,  divided by (ii) the aggregate Revolving  Commitments of all of the
Lenders.  As of the Agreement  Date, the Revolving  Commitment of each Lender is
set forth on Schedule 1 to the Lender  Addendum  delivered  by such Lender under
the caption "Revolving Commitment."

                  "Revolving Loan  Availability  Date" shall mean the earlier of
(a) the date on which at least fifty  percent  (50%) of the Tranche A Commitment
shall be funded and (b) the Tranche A Commitment Reduction Date.

                                       30
   37

                  "Revolving  Loans"  shall  mean,   collectively,   the  amount
advanced  by  certain  of  the  Lenders  to the  Borrower  under  the  Revolving
Commitment,  not to exceed the amount of the Revolving Commitment, and evidenced
by the Revolving Notes.

                  "Revolving   Notes"   shall  mean  those   certain   revolving
promissory notes in the aggregate original principal amount of $350,000,000, one
issued by the Borrower to each of the Lenders issuing a Revolving  Commitment in
accordance  with  each  such  Lender's  Revolving  Commitment  Ratio,  each  one
substantially  in the form of Exhibit L  attached  hereto,  and any  extensions,
modifications,  renewals  or  replacements  of  or  amendments  to  any  of  the
foregoing.

                  "Sales Transaction" shall have the meaning assigned thereto in
the definition of "Net Cash Proceeds".

                  "SBC"  shall  mean  SBC  Communications,  Inc.,  a  Delaware
orporation.


                  "SBC Agreement to Sublease" shall mean that certain  Agreement
to Sublease dated August 25, 2000,  among SBC Wireless (for itself and on behalf
of the Sublessor  Entities  referred to therein),  Holdco and STI, as amended by
Amendment No. 1 thereto dated as of December 14, 2000.

                  "SBC   Build-to-Suit   Agreement"   shall  mean  that  certain
Agreement  to Build To Suit dated as of December  14,  2000,  among SBC Wireless
(for itself and as agent for certain "SBCW Parties" referred to therein), Holdco
and the Borrower.

                  "SBC Lease  Documents" shall mean,  collectively,  (a) the SBC
Agreement  to  Sublease,  (b)  the  SBC  Build-to-Suit  Agreement,  (c)  the SBC
Sublease, and (d) all other documents executed by Holdco, the Borrower or any of
the Subsidiary Guarantors in connection with the SBC Transaction.

                  "SBC  Sublease"  shall mean that  certain  Lease and  Sublease
dated December 14, 2000, among SBC Wireless,  SBC Tower Holdings (for itself and
on behalf of the "SBCW Group Members" referred to therein), Holdco and STI.

                  "SBC Tenants" shall mean, collectively, SBC Tower Holdings and
those legal entities which own or lease the tower assets leased to STI under the
SBC Lease Documents,  those Persons which, directly or indirectly,  control, are
controlled by or under common control with SBC Wireless,  and those Persons with
respect to which SBC  Wireless  owns,  directly  or  indirectly,  at least fifty
percent  (50%) of the Equity  Interests  thereof that is at the time entitled to
vote in the  election of the board of  directors  thereof or which SBC  Wireless
otherwise controls,  which in each case are signatories to the SBC Sublease. For
purposes of this  definition,  "control"  shall mean the ownership,  directly or
indirectly,  of  sufficient  voting  shares  of  an  entity,  or  otherwise  the
possession,  directly  or  indirectly,  of the  power to  direct  or  cause  the
direction  of the  management  and  policies of an entity,  or the power to veto
major  policy  decisions of any such entity,  whether  through the  ownership of
voting securities, by contract or otherwise.

                  "SBC  Tower  Holdings"  shall mean SBC Tower  Holdings  LLC, a
Delaware limited liability company and an Affiliate of SBC.

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                  "SBC Towers" shall mean the Towers leased by STI in connection
with  the SBC  Transaction  or  constructed  pursuant  to the SBC  Build-to-Suit
Agreement,  and in any case  having an SBC  Tenant  as the  anchor  tenant  with
respect thereto.

                  "SBC Transaction" shall mean the leasing by STI from SBC Tower
Holdings of the economic rights with respect to certain Tower Assets pursuant to
the terms and  conditions  of the SBC Lease  Documents  for an aggregate  amount
payable in cash and Equity  Interests  in a series of  closings  and with a cash
amount not to exceed $985,000,000.

                  "SBC  Wireless"  shall  mean SBC  Wireless,  LLC,  a  Delaware
limited  liability  company (as successor in interest to SBC  Wireless,  Inc., a
Delaware corporation) and an Affiliate of SBC.

                  "Securities  Act" shall mean the  Securities  Act of 1933,  as
amended, and the rules and regulations promulgated thereunder.

                  "Security  Agreement"  shall  mean that  certain  Amended  and
Restated  Security  Agreement between the Borrower and the Collateral Agent, for
the  benefit  of  the  Credit  Parties,  dated  as of  the  Agreement  Date,  in
substantially the form of Exhibit M attached hereto.

                  "Security  Documents"  shall  mean,  without  limitation,  the
Security  Agreement,  the Borrower Pledge Agreement,  all Intellectual  Property
Security Agreements,  all Assignments of Acquisition  Documents,  the Subsidiary
Guaranty,  the Subsidiary Pledge Agreement,  the Subsidiary  Security Agreement,
the Holdco Pledge Agreement, all Mortgages, all Non-Disturbance  Agreements, and
any other  agreement or instrument  providing  Collateral  for the  Obligations,
whether now or hereafter in existence, and any filings, instruments, agreements,
and documents related thereto or to this Agreement, and providing the Collateral
Agent with Collateral for the Obligations.

                  "Security  Interest"  shall  mean  all  Liens  in favor of the
Collateral Agent created hereunder or under any of the Security Documents.

                  "Senior Credit Parties" shall have the same meaning as "Credit
Parties," as defined herein.

                  "Senior   Commitments"   shall   have  the  same   meaning  as
"Commitments," as defined herein.

                  "Senior   Obligations"   shall   have  the  same   meaning  as
"Obligations," as defined herein.

                  "Shared  Tenant  Infrastructure  Sites" shall mean those sites
constructed  within  enclosed  areas,  including,  but not  limited  to,  office
buildings,  casinos, stadiums, shopping malls, airports and tunnels, and capable
of providing  licensed or  unlicensed  wireless  services  within such  enclosed
areas.

                  "SPC"  shall  have the  meaning  assigned  thereto  in Section
13.5(k).

                  "SpectraSite Mexico" shall mean,  collectively,  any direct or
indirect  Subsidiary of the Borrower or other Person in which the Borrower has a
direct or indirect Investment, that in either case owns Towers, Tower Sites or

                                       32
   39

Shared  Tenant  Infrastructure  Sites  located  in Mexico or  conducts a primary
portion  of its tower  management  business  in  Mexico,  and which has not been
designated  by the Borrower as an  Unrestricted  Subsidiary  or an  Unrestricted
Investment.

                  "STI" shall mean Southern Towers, Inc., a Delaware corporation
and a wholly owned Restricted Subsidiary of the Borrower.

                  "Subsidiary"  shall  mean,  as  applied  to  any  Person,  any
corporation  of which more than fifty  percent  (50%) of the  outstanding  stock
(other than directors'  qualifying shares) having ordinary voting power to elect
its board of  directors,  regardless  of the existence at the time of a right of
the  holders  of any class or  classes  of  securities  of such  corporation  to
exercise such voting power by reason of the happening of any contingency, or any
partnership  or other  entity of which  more  than  fifty  percent  (50%) of the
outstanding partnership or other equity interests, is at the time owned directly
or indirectly by such Person,  or by one or more Subsidiaries of such Person, or
by such Person and one or more Subsidiaries of such Person.

                  "Subsidiary Guarantors" shall mean, collectively,  each of the
Restricted  Subsidiaries and, to the extent constituting a Designated Subsidiary
hereunder, each of the Domestic SpectraSite Mexico Subsidiaries.

                  "Subsidiary  Guaranty"  shall mean that  certain  Amended  and
Restated  Subsidiary  Guaranty Agreement issued by each Subsidiary  Guarantor in
favor of the Collateral  Agent, for the benefit of the Credit Parties,  dated as
of the Agreement Date, in  substantially  the form of Exhibit N attached hereto,
and any  similar  guaranty  or any  guaranty  supplement  delivered  pursuant to
Section 6.15 hereof.

                  "Subsidiary   Pledge   Agreement"   shall  mean  that  certain
Subsidiary  Pledge Agreement among each Subsidiary  Guarantor holding any Equity
Interests  in any  Designated  Subsidiary  or  Restricted  Investment,  and  the
Collateral  Agent,  for the  benefit  of the  Credit  Parties,  dated  as of the
Agreement Date, in substantially the form of Exhibit O attached hereto,  and any
similar pledge agreement or any pledge agreement  supplement  delivered pursuant
to Section 6.15 hereof.

                  "Subsidiary   Security  Agreement"  shall  mean  that  certain
Amended  and  Restated   Subsidiary  Security  Agreement  among  the  Subsidiary
Guarantors  and the  Collateral  Agent,  for the benefit of the Credit  Parties,
dated as of the Agreement Date, in substantially  the form of Exhibit P attached
hereto, and any similar security agreement or any security agreement  supplement
delivered pursuant to Section 6.15 hereof.

                  "Swing Loan Committed Amount" shall mean $10,000,000.

                  "Swing Loans" shall mean revolving  loans made to the Borrower
by the Swing Loan Lender from time to time for the Swing Loan Lender's  account,
which revolving loans shall be made in accordance with Sections 2.1(b) and 2.15.

                  "Swing   Loan   Lender"   shall   mean  any   Lender   or  the
Administrative   Agent  as  agreed  to  at  any  time  by  the   Borrower,   the
Administrative  Agent  and,  if  applicable,  such  Lender,  in  either  case as
designated  in  accordance  with this  Agreement,  in its capacity as Swing Loan
Lender under this Agreement.  The initial Swing Loan Lender shall be The Bank of
New York.

                                       33
   40

                  "Swing  Loan  Note"  shall mean that  certain  Swing Loan Note
dated as of the Agreement Date, in the principal  amount of $10,000,000,  issued
by the Borrower to the Swing Loan Lender, substantially in the form of Exhibit Q
attached  hereto,  and any  amendments,  replacements,  extensions  or  renewals
thereof.

                  "Swing  Loan  Request"  shall  have the  meaning  set forth in
Section 2.15(a)(i).

                  "Syndication Agent" shall mean CSFB.

                  "TAS" shall mean Tower Asset Sub, Inc., a Delaware corporation
and a wholly owned Restricted Subsidiary of the Borrower.

                  "Taxes"  shall have the  meaning  set forth in Section  2.9(b)
hereof.

                  "Term Loans" shall mean, collectively, the Tranche A Loans and
the Tranche B Loans.

                  "Term  Notes" shall mean the Tranche A Notes and the Tranche B
Notes.

                  "Total Interest Coverage Ratio" shall mean, on any calculation
date, for the Borrower and the Designated Subsidiaries, on a consolidated basis,
the ratio of (a)  Annualized  EBITDA as at such date, to (b) cash Total Interest
Expense for the immediately preceding four (4) fiscal quarter period.

                  "Total Interest  Expense" shall mean, for any period,  the sum
of (a) Borrower Interest Expense, (b) the amount of any Restricted Payments made
by the  Borrower or any of the  Designated  Subsidiaries  to Holdco  during such
period for the purpose of making payments of interest or dividends in respect of
the  Holdco  Notes or any other  Permitted  High-Yield  Securities,  and (c) the
amount of any  Restricted  Payments made by the Borrower  during such period for
the  purpose  of making  payments  of  dividends  in  respect  of any  Permitted
High-Yield Securities of the Borrower.

                  "Tower" shall mean any communications  tower owned,  leased or
managed by the Borrower or any of the Designated Subsidiaries.

                  "Tower Assets" shall mean assets and  businesses  constituting
Tower  Sites,  Shared  Tenant  Infrastructure  Sites,  Towers or "build to suit"
businesses owned by the Borrower or any Designated  Subsidiary,  and any and all
Assets  relating  thereto  (including,  without  limitation,  tower  structures,
concrete  pads,  tower lighting and fences,  interests in real property  related
thereto, third party tenant leases and permits and documents related thereto).

                  "Tower   Operations"   shall  mean  the  ownership,   leasing,
management,   shared  tenant   infrastructure,   "build-out"  and   construction
businesses  of the  Borrower  and the  Designated  Subsidiaries  relating to the
Towers.

                  "Tower Parent Corp." shall mean Tower Parent Corp., a Delaware
corporation.

                  "Tower Site" shall mean each parcel of real  property,  owned,
leased or managed by the Borrower or any of the Designated Subsidiaries pursuant
to a Tower Site Lease Agreement or a Tower Site Management Agreement, on which

                                       34
   41

the Borrower or any of the Designated Subsidiaries owns, operates or maintains a
Tower.

                  "Tower Site Lease Agreement" shall mean each lease or sublease
for real property to which the Borrower or any of the Designated Subsidiaries is
a party pursuant to which the Borrower or such Designated  Subsidiary  leases or
subleases a Tower Site.

                  "Tower Site  Management  Agreement"  shall mean any  agreement
pursuant to which the  Borrower or any of the  Designated  Subsidiaries  has the
right to  substantially  control Tower Assets and the revenues  derived from the
rental or use thereof.

                  "Tower  Space  Lease   Agreement"  shall  mean  any  lease  or
sub-lease agreement to which the Borrower or any of the Designated  Subsidiaries
is a party pursuant to which the Borrower or such Designated  Subsidiary  leases
or  sub-leases  platform  space on Towers  and  space to a third  party on other
communications   sites  and  the  right  to  use  and/or  benefit  from  related
improvements.

                  "Tower Subsidiaries" shall mean,  collectively,  TAS, CTI, STI
and each other Restricted Subsidiary that owns or leases any Towers.

                  "Tranche A Commitment"  shall mean the several  obligations of
certain of the Lenders to advance the sum of up to  $500,000,000 to the Borrower
not later than the Tranche A Commitment  Termination  Date, in  accordance  with
their respective  Tranche A Commitment Ratios, and as reduced from time to time,
all pursuant to the terms hereof.

                  "Tranche A Commitment  Ratio" shall mean,  with respect to any
Lender, the ratio, expressed as a percentage, of (i) the Tranche A Commitment of
such Lender,  divided by (ii) the aggregate  Tranche A Commitments of all of the
Lenders.  As of the Agreement  Date,  the Tranche A Commitment of each Lender is
set forth on Schedule 1 to the Lender  Addendum  delivered  by such Lender under
the caption "Tranche A Commitment."

                  "Tranche A  Commitment  Reduction  Date"  shall mean the first
anniversary of the Agreement Date.

                  "Tranche A  Commitment  Termination  Date" shall mean the date
that is eighteen (18) months after the Agreement Date.

                  "Tranche  A  Loans"  shall  mean,  collectively,  the  amounts
advanced  by  certain  of the  Lenders  to the  Borrower  under  the  Tranche  A
Commitment,  not to exceed the amount of the Tranche A Commitment, and evidenced
by the Tranche A Notes.

                  "Tranche A Notes"  shall mean those  certain term notes in the
aggregate original principal amount of $500,000,000,  one issued by the Borrower
to each of the Lenders  issuing a Tranche A Commitment in  accordance  with each
such Lender's Tranche A Commitment  Ratio, each one substantially in the form of
Exhibit R  attached  hereto,  and any  extensions,  modifications,  renewals  or
replacements of or amendments to any of the foregoing.

                  "Tranche B Commitment"  shall mean the several  obligations of
certain of the Lenders to advance the sum of up to  $450,000,000 to the Borrower
on the Agreement Date in accordance with their  respective  Tranche B Commitment
Ratios, all pursuant to the terms hereof.

                                       35
   42

                  "Tranche B Commitment  Ratio" shall mean,  with respect to any
Lender, the ratio, expressed as a percentage, of (i) the Tranche B Commitment of
such Lender,  divided by (ii) the aggregate  Tranche B Commitments of all of the
Lenders.  As of the Agreement  Date,  the Tranche B Commitment of each Lender is
set forth on Schedule 1 to the Lender  Addendum  delivered  by such Lender under
the caption "Tranche B Commitment."

                  "Tranche  B  Loans"  shall  mean,  collectively,   the  amount
advanced  by  certain  of the  Lenders  to the  Borrower  under  the  Tranche  B
Commitment,  not to exceed the amount of the Tranche B Commitment  and evidenced
by the Tranche B Notes.

                  "Tranche B Notes"  shall mean those  certain term notes in the
aggregate original principal amount of $450,000,000,  one issued by the Borrower
to each of the Lenders  issuing a Tranche B Commitment in  accordance  with each
such Lender's Tranche B Commitment  Ratio, each one substantially in the form of
Exhibit S  attached  hereto,  and any  extensions,  modifications,  renewals  or
replacements of or amendments to any of the foregoing.

                  "Transferee"  shall  have  the  meaning  assigned  thereto  in
Section 13.5(e) hereof.

                  "Unfunded Commitment  Percentage" shall mean, as of the end of
any quarter, the percentage equivalent of a fraction,  the numerator of which is
equal to the sum of the  average  daily  amount  during  such  quarter,  without
duplication,  of (a) the  Revolving  Commitment,  less the  aggregate  principal
amount of Revolving Loans  outstanding,  less the L/C  Obligations  outstanding,
less the  aggregate  principal  amount of Swing Loans  outstanding,  and (b) the
Unfunded  Tranche A  Commitment,  and the  denominator  of which is equal to the
average  daily  amount  during  such  quarter  of the sum of (i)  the  Revolving
Commitment and (ii) (x) prior to the Tranche A Commitment  Termination Date, the
Tranche A Commitment,  and (y) after the Tranche A Commitment  Termination Date,
the principal amount of the Tranche A Loans outstanding.

                  "Unfunded   Commitments"   shall  mean,  as  of  any  date  of
determination,  the sum of (a) the  Revolving  Commitment,  less  the  aggregate
principal  amount  of  Revolving  Loans  outstanding,  less the L/C  Obligations
outstanding, less the aggregate principal amount of Swing Loans outstanding, (b)
(i) as of any date of  determination  from the  Agreement  Date to the Tranche A
Commitment  Termination  Date,  the  Tranche  A  Commitment  less the  aggregate
principal amount of Tranche A Loans made from the Agreement Date to such date of
determination,  or (ii) as of any date of  determination  after  the  Tranche  A
Commitment  Termination  Date,  zero  (0),  and (c) the  undrawn  amount  of all
Incremental Facility Commitments.

                  "Unfunded  Tranche A Commitment" shall mean, as of any date of
determination,  the  amount  of the  Tranche  A  Commitment  less the  aggregate
principal amount of the Tranche A Loans then outstanding.

                  "Uniform  Customs" shall mean the Uniform Customs and Practice
for  Documentary  Credits  (1993  Revision),  International  Chamber of Commerce
Publication  No.  500,  as the same may be amended,  supplemented  or  otherwise
modified from time to time and, if applicable,  the rules of the  "International
Standby Practices 1998" (ISP98), as the same may be revised from time to time.

                                       36
   43

                  "Unrestricted   Group"   shall   mean,    collectively,    the
Unrestricted Subsidiaries and the Unrestricted Investments.

                  "Unrestricted Investments" shall mean, collectively, direct or
indirect minority Investments by the Borrower in the Equity Interests of Persons
(other  than  Concourse   Communications,   any  Domestic   SpectraSite   Mexico
Investments, any Foreign SpectraSite Mexico Investments,  Foreign Investments or
Restricted  Investments)  and which  have been  designated  by the  Borrower  as
"Unrestricted Investments" pursuant to Section 6.17(a) hereof.

                  "Unrestricted  Subsidiaries" shall mean the direct or indirect
Subsidiaries of the Borrower (other than Concourse Communications,  any Domestic
SpectraSite Mexico  Subsidiaries,  any Foreign SpectraSite Mexico  Subsidiaries,
Foreign  Subsidiaries or Restricted  Subsidiaries) which have been designated in
writing by the  Borrower  as  "Unrestricted  Subsidiaries"  pursuant  to Section
6.17(a) hereof.

                  "Use of  Proceeds  Letter"  shall  mean  that  certain  Use of
Proceeds  Letter,  substantially  in the  form of  Exhibit  T  attached  hereto,
delivered  to the Credit  Parties on the  Agreement  Date  pursuant to Article 4
hereof.

                  "Voting Stock" shall mean all classes of Equity Interests of a
Person then outstanding and normally entitled,  without regard to the occurrence
of any contingency,  to vote in the election of directors,  managers, or trustee
thereof.

                  "WCAS" shall mean WCAS Capital Partners III, L.P., a Delaware
limited partnership.


                  "Welsh" shall mean,  collectively,  Welsh, Carson,  Anderson &
Stowe VIII, L.P., a Delaware  limited  partnership,  WCAS Information  Partners,
L.P.,  a  Delaware  limited  partnership,  WCAS  and  each of  their  respective
individual partners.

                  "Whitney" shall mean, J. H. Whitney Mezzanine Fund, L.P., a
Delaware limited partnership,  Whitney Equity Partners, L.P., a Delaware limited
partnership,  J. H.  Whitney  III,  L.P., a Delaware  limited  partnership,  and
Whitney Strategic Partners III, L.P., a Delaware limited partnership.

                  Each  definition  of an  agreement  in  this  Article  1 shall
include  such  instrument  or agreement as amended,  restated,  supplemented  or
otherwise  modified  from time to time,  and except where the context  otherwise
requires,  definitions  imparting the singular shall include the plural and vice
versa. Except where otherwise specifically restricted, reference to a party to a
Loan Document  includes that party and its successors  and assigns.  An Event of
Default shall "exist", "continue" or be "continuing" until such Event of Default
has been waived in writing in accordance  with Section  13.12 hereof.  All terms
used herein  which are defined in Article 9 of the  Uniform  Commercial  Code in
effect in the State of New York on the date  hereof and which are not  otherwise
defined  herein shall have the same meanings  herein as set forth  therein.  All
accounting  terms used herein without  definition shall be used as defined under
GAAP. All financial  calculations  hereunder shall,  unless otherwise stated, be
determined  for  the  Borrower  on a  consolidated  basis  with  the  Designated
Subsidiaries.

                                       37
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                                ARTICLE 2 - Loans


     Section  2.1 The  Loans.  Subject  to the terms and  conditions  of, and in
reliance upon the representations and warranties made in, this Agreement and the
other  Loan  Documents,  the  Lenders  have  extended  and agree,  severally  in
accordance  with their  respective  Commitment  Ratios and not jointly,  to make
Loans to the Borrower in an aggregate principal amount not to exceed One Billion
Three Hundred Million Dollars ($1,300,000,000).

               (a) The Revolving Loans. The Lenders that have issued a Revolving
Commitment  agree,  severally  in  accordance  with their  respective  Revolving
Commitment Ratios and not jointly,  upon the terms and subject to the conditions
of this  Agreement,  to lend and  re-lend  to the  Borrower,  on and  after  the
Agreement  Date, but prior to the Initial  Maturity Date,  amounts which, in the
aggregate,  do not exceed at any time the amount  equal to the result of (i) the
Available  Revolving   Commitment,   less  (ii)  the  aggregate  amount  of  L/C
Obligations then outstanding, less (iii) the aggregate principal amount of Swing
Loans then outstanding.  Subject to the terms and conditions hereof and prior to
the Initial Maturity Date, Advances under the Revolving Commitment may be repaid
and  reborrowed  from time to time on a revolving  basis or may be  continued or
converted pursuant to a Notice of Conversion/Continuation as provided in Section
2.2 hereof.

               (b)  The  Swing  Loans.  Subject  to  the  terms  and  conditions
hereinafter set forth, including,  without limitation,  Section 2.15 hereof, the
Swing Loan Lender, in its individual capacity, agrees to make Swing Loans to the
Borrower  from time to time on and after the  Agreement  Date,  but prior to the
Initial  Maturity  Date;  provided,  however,  that (i) the aggregate  principal
amount of Swing  Loans  outstanding  at any time shall not exceed the Swing Loan
Committed  Amount,  and (ii) the sum of (A) the  aggregate  principal  amount of
Revolving Loans  outstanding,  plus (B) the aggregate  amount of L/C Obligations
outstanding,  plus (C) the aggregate principal amount of Swing Loans outstanding
shall not at any time exceed the  Available  Revolving  Commitment.  Swing Loans
hereunder may be repaid and reborrowed  from time to time in accordance with the
provisions hereof.

               (c) The Tranche A Loans. The Lenders that have issued a Tranche A
Commitment,  severally in accordance with their respective  Tranche A Commitment
Ratios and not  jointly,  upon the terms and subject to the  conditions  of this
Agreement, agree to lend to the Borrower, on and after the Agreement Date and on
or prior to the Tranche A Commitment  Termination Date, in multiple Advances, an
aggregate  amount not to exceed the Tranche A  Commitment.  After the  Agreement
Date,  Advances  under the Tranche A  Commitment  may be  continued or converted
pursuant  to a Notice of  Conversion/Continuation  as  provided  in Section  2.2
hereof; provided, however, there shall be no increase in the aggregate principal
amount  outstanding under the Tranche A Commitment at any time after the Tranche
A Commitment Termination Date. Amounts repaid under the Tranche A Commitment may
not be reborrowed.

               (d) The Tranche B Loans. The Lenders that have issued a Tranche B
Commitment,  severally in accordance with their respective  Tranche B Commitment
Ratios and not  jointly,  upon the terms and subject to the  conditions  of this
Agreement,  agree to lend to the Borrower on the Agreement  Date an amount equal
to the  Tranche B  Commitment.  After the  Agreement  Date,  Advances  under the
Tranche B  Commitment  may be  continued  or  converted  pursuant to a Notice of
Conversion/Continuation  as provided in Section 2.2 hereof;  provided,  however,
there shall be no increase in the aggregate principal amount of the Tranche B

                                       38
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Loans outstanding at any time after the Agreement Date. Amounts repaid under the
Tranche B Commitment may not be reborrowed.

               (e) The Letters of Credit.  Each Issuing  Bank  agrees,  upon the
terms and subject to the  conditions  of this  Agreement,  to issue from time to
time, on and after the Agreement  Date, but prior to the Initial  Maturity Date,
for the  account of the  Borrower,  Letters of Credit to such  beneficiaries  as
shall be  designated  in writing by the Borrower to such Issuing Bank, up to the
limit of the Letter of Credit Committed Amount.

     Section 2.2 Manner of Borrowing and Disbursement.


          (a) Choice of Interest Rate,  Etc. Any Advance (i) under the Revolving
Commitment  (except with respect to Swing Loans and Advances in reimbursement of
amounts advanced to beneficiaries under Letters of Credit,  which Advances shall
in all  cases be Base  Rate  Advances  initially)  shall,  at the  option of the
Borrower, be made as a Base Rate Advance or a Eurodollar Advance, (ii) under the
Tranche A Commitment  shall,  at the option of the  Borrower,  be made as a Base
Rate Advance or a Eurodollar  Advance,  and (iii) under the Tranche B Commitment
shall,  at the  option  of the  Borrower,  be made as a Base Rate  Advance  or a
Eurodollar Advance;  provided,  however,  that (A) if the Borrower fails to give
the Administrative  Agent written notice specifying whether a Eurodollar Advance
is to be repaid,  continued  or  converted on a Payment  Date,  such  Eurodollar
Advance shall be converted to a Base Rate Advance on such Payment Date,  and (B)
the  Borrower  may not  select  a  Eurodollar  Advance  if,  at the time of such
selection,  a Default or Event of Default has  occurred and is  continuing.  All
Advances  of the Loans made on the  Agreement  Date shall bear  interest as Base
Rate Advances. Any notice given to the Administrative Agent in connection with a
requested Advance hereunder shall be given to the Administrative  Agent prior to
10:00 a.m.  (New York time) in order for such  Business  Day to count toward the
minimum number of Business Days required.

          (b) Base Rate Advances.

               (i) Initial and Subsequent Advances.  The Borrower shall give the
Administrative  Agent  in the  case of Base  Rate  Advances,  irrevocable  prior
written  notice not later  than  10:00 a.m.  (New York time) on the date of such
Advance in the form of a Request for  Advance,  or  telephonic  notice  followed
immediately  by a Request for Advance;  provided,  however,  that the Borrower's
failure to confirm any  telephonic  notice with a Request for Advance  shall not
invalidate any notice so given; and provided, further, that no such notice shall
be required in connection with the making of a Base Rate Advance to repay a draw
under a Letter of Credit.

               (ii)  Repayments  and  Conversions.  The Borrower may (A) upon at
least  one  (1)  Business  Days'   irrevocable   prior  written  notice  to  the
Administrative  Agent, repay or prepay a Base Rate Advance, or (B) upon at least
three (3) Business Days' irrevocable prior written notice to the  Administrative
Agent in the  form of a  Notice  of  Conversion/Continuation,  convert  all or a
portion of the principal amount thereof to one or more Eurodollar  Advances.  On
the date indicated by the Borrower, such Base Rate Advance shall be so repaid or
converted.

               (iii)  Miscellaneous.  Notwithstanding  any term or  provision of
this  Agreement  which may be construed to the contrary,  each Base Rate Advance
(except  any  Base  Rate  Advance  in   reimbursement  of  amounts  advanced  to

                                       39
   46

beneficiaries  under  Letters of Credit)  shall be in a  principal  amount of at
least $3,000,000 and in integral multiples of $100,000 in excess thereof, or the
remaining amount of the Revolving Commitment or the Tranche A Commitment, as the
case may be.

               (c) Eurodollar Advances.

                    (i) Initial and Subsequent Advances. The Borrower shall give
the Administrative  Agent in the case of Eurodollar  Advances at least three (3)
Business  Days'  irrevocable  prior written  notice in the form of a Request for
Advance,  or telephonic  notice  followed  immediately by a Request for Advance;
provided,  however, that the Borrower's failure to confirm any telephonic notice
with a  Request  for  Advance  shall not  invalidate  any  notice so given.  The
Borrower  shall  promptly  notify  the  Administrative  Agent  by  telephone  or
telecopy,  and shall immediately  confirm any such telephonic notice in writing,
of its selection of a Eurodollar  Advance and Eurodollar Advance Period for such
Advance;  provided,  however,  that the  Borrower's  failure to confirm any such
telephonic notice in writing shall not invalidate any notice so given.

                    (ii) Repayments,  Continuations  and  Conversions.  At least
three (3) Business Days prior to each Payment Date for a Eurodollar Advance, the
Borrower  shall give the  Administrative  Agent written  notice in the form of a
Notice of  Conversion/Continuation  specifying  whether all or a portion of such
Eurodollar  Advance  outstanding  on such Payment Date (A) is to be continued in
whole or in part as a new  Eurodollar  Advance,  in which case such notice shall
also specify the Eurodollar Advance Period for such new Eurodollar Advance,  (B)
is to be converted in whole or in part to a Base Rate  Advance,  or (C) is to be
repaid and not continued or converted.  Upon such Payment Date,  such Eurodollar
Advance  will,  subject to the  provisions  hereof,  be so repaid,  continued or
converted, as applicable. If the Borrower fails to give the Administrative Agent
written  notice  specifying  whether  a  Eurodollar  Advance  is to  be  repaid,
continued or converted  on a Payment  Date,  such  Eurodollar  Advance  shall be
converted to a Base Rate Advance on such Payment Date.

                    (iii)  Miscellaneous.  Notwithstanding any term or provision
of this  Agreement  which may be  construed  to the  contrary,  each  Eurodollar
Advance shall be in a principal  amount of at least  $5,000,000  and in integral
multiples  of $100,000  in excess  thereof,  and at no time shall the  aggregate
number of all Eurodollar Advances outstanding exceed twenty (20).

          (d) Notification of Lenders.  Upon receipt of a Request for Advance or
a notice from the Borrower with respect to any outstanding  Advance prior to the
Payment  Date  for  such  Advance,   or  a  request  by  the  Issuing  Bank  for
reimbursement under Section 2.14 hereof, or a request or a deemed request by the
Swing Loan Lender for  repayment of any  outstanding  Swing Loans under  Section
2.15(b) hereof,  the  Administrative  Agent shall promptly notify each Lender by
telephone  or telecopy of the contents  thereof and the amount of such  Lender's
portion of the Advance.  Each Lender  shall,  not later than 1:00 p.m. (New York
time) on the date of borrowing  specified in such notice,  make available to the
Administrative Agent at the Administrative Agent's Office, or at such account as
the  Administrative  Agent  shall  designate,  the amount of its  portion of any
Advance  which  represents  an  additional  borrowing  hereunder in  immediately
available funds.
                                       40
   47

               (e) Disbursement.

                         (i) Prior to, with respect to Base Rate Advances,  3:00
p.m. (New York time), and, with respect to Eurodollar  Advances,  2:00 p.m. (New
York time), in each case on the date of an Advance hereunder, the Administrative
Agent shall, subject to the satisfaction of any applicable  conditions set forth
in Article 4 hereof, disburse the amounts made available to it by the Lenders in
immediately available funds by (A) transferring the amounts so made available by
wire transfer  pursuant to the  Borrower's  instructions,  (B) in the case of an
Advance  representing  the  reimbursement of the Issuing Bank for a draw under a
Letter of Credit,  transferring  such amount to the Issuing  Bank, or (C) in the
absence of such instructions  referred to in clause (A) above and so long as the
provisions of clause (B) above do not apply to the requested Advance,  crediting
the amounts so made available to the account of the Borrower maintained with the
Administrative Agent.

                         (ii)  Unless  the   Administrative   Agent  shall  have
received notice from a Lender, prior to 1:00 p.m. (New York time) on the date of
any Advance that such Lender will not make available to the Administrative Agent
such Lender's  ratable  portion of such Advance,  the  Administrative  Agent may
assume that such  Lender,  has made or will make such  portion  available to the
Administrative  Agent on the date of such Advance and the  Administrative  Agent
may, in its sole discretion and in reliance upon such assumption, make available
to the  Borrower  on such date a  corresponding  amount.  If and to the extent a
Lender does not make such ratable portion available to the Administrative Agent,
such  Lender,  agrees  to  repay to the  Administrative  Agent  on  demand  such
corresponding  amount together with interest thereon, for each day from the date
such  amount is made  available  to the  Borrower  until the date such amount is
repaid to the Administrative Agent, at the Federal Funds Rate.

                         (iii) If such Lender shall repay to the  Administrative
Agent such  corresponding  amount,  such amount so repaid shall  constitute such
Lender's  portion of the applicable  Advance for purposes of this Agreement.  If
such  Lender  does not repay  such  corresponding  amount  immediately  upon the
Administrative  Agent's demand therefor,  the Administrative  Agent shall notify
the Borrower,  and the Borrower shall promptly pay such corresponding  amount to
the  Administrative  Agent,  together with interest thereon.  The failure of any
Lender to fund its portion of any Advance  shall not relieve any other Lender of
its obligation  hereunder to fund its  respective  portion of the Advance on the
date of such borrowing,  but no Lender shall be responsible for any such failure
of any other Lender.

                         (iv) In the event that,  at any time when the  Borrower
is not in Default,  a Lender for any reason fails or refuses to fund its portion
of an  Advance,  then,  until such time as such Lender has funded its portion of
such Advance,  or all other  Lenders have  received  payment in full (whether by
repayment or  prepayment)  of the  principal and interest due in respect of such
Advance,  such non-funding Lender shall not have the right (A) to vote regarding
any issue on which voting is required or advisable  under this  Agreement or any
other Loan  Document  and,  with respect to any such  Lender,  the amount of the
Revolving  Commitment and Term Loans,  as applicable,  or Loans,  as applicable,
held by such  Lender  shall  not be  counted  as  outstanding  for  purposes  of
determining  "Majority  Lenders"  hereunder,  and  (B) to  receive  payments  of
principal, interest or fees from the Borrower in respect of its unfunded portion
of  Advances.  Notwithstanding  the  foregoing,  within  sixty  (60) days of the
failure by any Lender to fund its portion of an  Advance,  so long as no Default
or Event of Default then exists, the Borrower may, in its discretion, provide a

                                       41
   48

replacement  lender or lenders for such non-funding  Lender,  which  replacement
lender or lenders will be subject to the approval of the Lead  Arrangers,  which
shall not be unreasonably  withheld,  and the Administrative  Agent, such Lender
and the Borrower shall take all necessary actions to transfer the rights, duties
and obligations of such non-funding Lender to such replacement lender or lenders
within such sixty (60) day period (including, without limitation, the payment in
full of all Obligations hereunder due to the non-funding Lender being replaced).

          (f) Automatic Payment.  Unless payment is otherwise timely made by the
Borrower,  the  becoming  due of any  amount  required  to be  paid  under  this
Agreement or any of the other Loan  Documents as  principal,  accrued  interest,
fees or other charges in respect of the Loans shall be deemed  irrevocably to be
a Request for Advance on the due date of, and in an aggregate amount required to
pay, such principal,  accrued interest,  fees or other charges, and the proceeds
of an Advance (i) under the Unfunded Tranche A Commitment,  or (ii) in the event
that the Tranche A Commitment is fully funded or is no longer  available,  under
the Available  Revolving  Commitment,  made pursuant thereto may be dispersed by
way of  direct  payment  of the  relevant  Obligation  and shall  bear  interest
initially as a Base Rate Advance. The Administrative Agent and the Lenders shall
have no obligation to the Borrower to honor any such deemed Request for Advance,
but may do so in their sole  discretion  and without regard to the existence of,
and without being deemed to have waived, any Default or Event of Default.

Section 2.3       Interest.


          (a) On Base Rate Advances. Interest on each Base Rate Advance shall be
computed  on the basis of a year of 365/366  days for the actual  number of days
elapsed and shall be payable  quarterly  in arrears on the last  Business Day of
each  calendar  quarter,  commencing  on March 31,  2001.  Interest on Base Rate
Advances  then  outstanding  shall  also be due and  payable  on the date of any
repayment  made on the Initial  Maturity  Date or the Final  Maturity  Date,  as
applicable.  Interest  shall  accrue and be payable on each Base Rate Advance at
the simple per annum interest rate equal to the sum of (A) the Base Rate and (B)
the Applicable Margin in effect from time to time and as more fully set forth in
Section 2.3(f) below.

          (b) On Eurodollar Advances.  Interest on each Eurodollar Advance shall
be computed on the basis of a 360-day year for the actual number of days elapsed
and shall be payable  in arrears  (i) on the  applicable  Payment  Date for such
Advance,  and (ii) if the Eurodollar  Advance Period for such Eurodollar Advance
exceeds three (3) months,  interest on such Eurodollar  Advance shall be due and
payable in  arrears  on every  three (3) month  anniversary  of such  Eurodollar
Advance.  Interest on Eurodollar Advances then outstanding shall also be due and
payable on the date of any repayment  made under Sections 2.5, 2.6 or 2.7 hereof
and on the Initial  Maturity Date or the Final  Maturity  Date,  as  applicable.
Interest  shall accrue and be payable on each  Eurodollar  Advance at a rate per
annum equal to the sum of (A) the Eurodollar  Rate applicable to such Eurodollar
Advance  and (B) the  Applicable  Margin in effect from time to time and as more
fully set forth in Section 2.3(f) below.


          (c)  Interest  if No Notice of  Selection  of  Interest  Rate.  If the
Borrower fails to give the  Administrative  Agent timely notice of the selection
of a  Eurodollar  Advance,  or if the  Administrative  Agent is unable to timely
determine a Eurodollar  Rate for any Advance,  the Base Rate shall apply to such
Advance.  If the Borrower fails to elect to continue any Eurodollar Advance then
outstanding prior to the Payment Date applicable thereto in

                                       42

   49
accordance with the provisions of Section 2.2 hereof,  the Base Rate shall apply
to such Advance commencing on and after such Payment Date.

          (d) Interest Upon Default. Immediately upon the occurrence of an Event
of  Default  under  Section  10.1(b),  (f) or  (g)  hereunder,  interest  on the
Obligations shall accrue at the Default Rate applicable thereto from the date of
such Event of Default.  Interest accruing at the Default Rate on the Obligations
shall be payable on demand and in any event on the Initial  Maturity Date or the
Final Maturity Date, as applicable, and shall accrue until the earliest to occur
of (A) waiver of the  applicable  Event of Default in  accordance  with  Section
13.12 hereof,  (B) agreement by the Majority  Lenders to rescind the charging of
interest at the Default  Rate,  or (C) payment in full of the  Obligations.  The
Lenders shall not be required to (x) accelerate the maturity of their Loans, (y)
terminate  their  Commitments,  or (z)  exercise  any other  rights or  remedies
available to them under the Loan Documents in order to charge interest hereunder
at the Default Rate.

          (e) Computation of Interest. In computing interest on any Advance, the
date of making the Advance  shall be included  and the date of payment  shall be
excluded; provided, however, that if an Advance is repaid on the date that it is
made, one (1) day's interest shall be due with respect to such Advance.

               (f)  Applicable  Margins for Base Rate  Advances  and  Eurodollar
Advances.

                    (i)  Advances  Under  the  Revolving  Commitment  or of  the
Tranche A Loans. With respect to any Advance under the Revolving Commitment,  or
any Advance of the Tranche A Loans,  the  Applicable  Margin shall be (A) on and
after the Agreement  Date to and including the  Adjustment  Date, (x) 2.75% with
respect to any  Eurodollar  Advance and (y) 1.50% with  respect to any Base Rate
Advance,  and (B) after the Adjustment Date, the interest rate margin based upon
the Borrower Leverage Ratio for the most recent fiscal quarter end, effective as
of the second (2nd) Business Day after the financial  statements  referred to in
Section 7.1 hereof are delivered by the Borrower to the Administrative Agent for
the fiscal quarter of the Borrower most recently ended, expressed as a per annum
rate of interest as follows:


                                                             

  If the Borrower Leverage Ratio is:       Then the Base Rate         Then the Eurodollar
  ---------------------------------
                                                 Advance                    Advance
                                        Applicable Margin shall    Applicable Margin shall
                                        ------------------------   -----------------------
                                                   be:                        be:
                                                   --                         --

Greater than or equal to 5.00 to 1.00             1.50%                      2.75%

Greater than or equal 4.50 to 1.00                1.25%                      2.50%
but less than 5.00 to 1.00

Greater than or equal to 4.00 to 1.00             1.00%                      2.25%
but less than 4.50 to 1.00

Greater than or equal to 3.50 to 1.00             0.75%                      2.00%
but less than 4.00 to 1.00

Less than 3.50 to 1.00                            0.50%                      1.75%



In the  event  that the  Borrower  fails to  timely  provide  (I) the  financial
statements  referred to above in accordance with the terms of Section 7.1 hereof
or (II) the Performance Certificate referred to in Section 7.3 hereof, and

                                       43
   50

without  prejudice to any additional rights under Section 2.3(d) or Section 10.2
hereof,  no  downward  adjustment  of the  Applicable  Margin in effect  for the
preceding quarter shall occur until the actual delivery of such statements,  and
from such failure and until such delivery,  the  Applicable  Margin shall be (x)
2.75% with  respect to each  Eurodollar  Advance,  and (y) 1.50% with respect to
each Base Rate Advance.

                    (ii)  Advances of the Tranche B Loans.  With  respect to any
Advance of the Tranche B Loans,  the  Applicable  Margin  shall be (A) 3.50% per
annum  with  respect  to any  Eurodollar  Advance  and (B) 2.25% per annum  with
respect to any Base Rate Advance.

          Section 2.4 Fees

               (a)  Commitment   Fees.  The  Borrower   agrees  to  pay  to  the
Administrative  Agent, for the benefit of each of the Lenders in accordance with
their respective  Revolving Commitment Ratios or Tranche A Commitment Ratios, as
applicable, a commitment fee on (i) the average daily amount during each quarter
ending during the period from the Agreement Date until the Initial Maturity Date
of (A) the  Revolving  Commitment,  less (B) the aggregate  principal  amount of
Revolving Loans outstanding,  less (C) the L/C Obligations outstanding, less (D)
the aggregate principal amount of Swing Loans outstanding, plus (ii) the average
daily  amount  during each  quarter  from the  Agreement  Date until the Initial
Maturity  Date  of  the  amount  available  to be  drawn  under  the  Tranche  A
Commitment,  at a rate of, (A) so long as the Unfunded Commitment  Percentage is
greater than or equal to sixty-six and  two-thirds  percent  (66-2/3%),  one and
three-eighths percent (1.375%) per annum, (B) so long as the Unfunded Commitment
Percentage  is  greater  than or equal to  thirty-three  and  one-third  percent
(33-1/3%) but less than sixty-six and two-thirds percent (66-2/3%),  one percent
(1.00%) per annum, and (C) so long as the Unfunded Commitment Percentage is less
than  thirty-three  and  one-third  percent  (33-1/3%),  one-half of one percent
(0.50%) per annum. Such commitment fees shall be computed on the basis of a year
of  365/366  days for the  actual  number  of days  elapsed,  shall  be  payable
quarterly  in  arrears  on the  last  Business  Day of  each  calendar  quarter,
commencing on the last day of the first full fiscal  quarter after the Agreement
Date, shall be fully earned when due, and shall be  non-refundable  when paid. A
final  payment of any  accrued and unpaid  commitment  fee shall also be due and
payable on the Initial Maturity Date.

               (b)  Letter  of Credit  Fee.  The  Borrower  agrees to pay to the
Administrative  Agent, for the benefit of the Lenders,  in accordance with their
respective  Revolving  Commitment  Ratios,  a letter of credit  fee equal to the
Applicable  Margin for Eurodollar  Advances  under the Revolving  Commitment per
annum  (computed  on the basis of a 360 day year for the  actual  number of days
elapsed),  of the stated  amount of each Letter of Credit  issued by the Issuing
Bank hereunder.  Such letter of credit fee shall be due and payable quarterly in
arrears on the last  Business  Day of each  calendar  quarter  during which such
Letter of Credit is outstanding and any accrued and unpaid letter of credit fees
shall also be due and  payable on the  Initial  Maturity  Date.  Such  letter of
credit fee shall be fully earned when due and  nonrefundable  when paid.  In the
event of any inconsistency  between the terms of this Agreement and the terms of
any letter of credit  reimbursement  agreements  or  indemnification  agreements
between  the  Borrower  and the Issuing  Bank with  respect to Letters of Credit
issued hereunder, the terms of this Agreement shall control.

                                       44
   51

               (c) Issuing Bank Fee. The Borrower  agrees to pay to each Issuing
Bank, for its own account,  a fee in the amount of such Issuing Bank's customary
fee with  respect to the  issuance  of a Letter of Credit on the face  amount of
each Letter of Credit issued by such Issuing Bank hereunder,  which fee shall be
due and payable quarterly in arrears commencing on the last Business Day of each
calendar  quarter in which such Letter of Credit is  outstanding.  The foregoing
fee shall be fully earned when due and nonrefundable  when paid. In the event of
any  inconsistency  between  the  terms of this  Agreement  and the terms of any
letter of credit reimbursement agreements or indemnification  agreements between
the Borrower  and any Issuing Bank with respect to the Letters of Credit  issued
by such Issuing Bank hereunder, the terms of this Agreement shall control.

               (d) Computation of Fees. In computing any fees payable under this
Section  2.4, the first day of the  applicable  period shall be included and the
date of payment shall be excluded.

          Section 2.5 Optional Prepayment/Reduction of Commitment.

               (a) Prepayment of Advances. The principal amount of any Base Rate
Advance under the Revolving Loan Commitment may be prepaid in full or in part at
any time, without penalty or premium,  upon not less than one (1) Business Days'
prior written notice to the  Administrative  Agent;  and the principal amount of
any Eurodollar  Advance under the Revolving Loan Commitment may be prepaid prior
to the applicable Payment Date,  without penalty or premium,  upon not less than
three (3)  Business  Days' prior  written  notice to the  Administrative  Agent,
provided that the Borrower  shall  reimburse the Lenders and the  Administrative
Agent, on demand, for any loss or out-of-pocket  expense incurred by any of them
in  connection  with such  prepayment  of  Eurodollar  Advances  as set forth in
Section  2.10  hereof.  Each  notice  of  prepayment  given  hereunder  shall be
irrevocable.  Upon receipt of any notice of prepayment, the Administrative Agent
shall  promptly  notify  each Lender of the  contents  thereof by  telephone  or
telecopy and of such Lender's portion of the prepayment.

               (b) Permanent Prepayment or Reduction.


                    (i) Terms of Prepayments or Reductions.  Optional  permanent
prepayments  of principal of the Term Loans,  and  permanent  reductions  of the
Revolving Commitment hereunder,  may be made at any time upon three (3) Business
Days' prior  irrevocable  written notice to the  Administrative  Agent,  without
penalty or premium,  provided that such  prepayments  or reductions  shall be in
minimum  amounts of $5,000,000 and integral  multiples of $1,000,000;  provided,
however,  that if the Borrower  prepays the Tranche B Loans in full on or before
the second (2nd)  anniversary of the Original  Closing Date, the Borrower hereby
agrees  to pay  to the  Administrative  Agent,  on  behalf  of  the  Lenders  in
accordance with their  respective  Tranche B Commitment  Ratios, a premium in an
amount  determined  by  multiplying  the  aggregate  amount  of  the  Tranche  B
Commitment  by  three-quarters  of one  percent  (0.75%)  with  respect  to such
prepayment made after the first (1st)  anniversary of the Original  Closing Date
but on or before the second  (2nd)  anniversary  of the Original  Closing  Date.
Notwithstanding the foregoing,  the Borrower shall not be required to pay such a
premium in the event that the  Tranche B Loans are  required  to be paid in full
pursuant to Section 2.6 hereof.

                    (ii)     Application     of    Payments    or    Reductions.

                                       45
   52

                         (A)  In  the  event  that  the  Borrower  shall  make a
prepayment  of the Term Loans on or before the  earlier of (I) the date on which
the  Tranche A  Commitment  shall have been fully  funded and (II) the Tranche A
Commitment  Termination  Date, the amount of such prepayment shall be applied to
permanently  reduce, on a pro rata basis, the Tranche A Commitment  (which,  for
purposes of this sentence,  shall include the aggregate  principal amount of the
Tranche A Loans then  outstanding),  the Tranche B Loans and, to the extent then
outstanding,  any Incremental Facility Loans which are term loans. To the extent
that the amount of any  prepayment  made hereunder is allocable to the Tranche A
Commitment  pursuant to the  preceding  sentence,  the  unfunded  portion of the
Tranche A Commitment shall be permanently  reduced by a like amount and the cash
amount of such prepayment  shall be applied to reduce,  on a pro rata basis, the
Tranche A Loans then  outstanding,  the Tranche B Loans then outstanding and any
Incremental  Facility Loans which are term loans then outstanding.  In the event
that the Borrower shall make a prepayment of the Term Loans after the earlier of
(A) the date on which the Tranche A Commitment  shall have been fully funded and
(B) the Tranche A Commitment Termination Date, such prepayment of the Term Loans
shall permanently  reduce, on a pro rata basis, the Tranche A Loans, the Tranche
B Loans and, to the extent then  outstanding,  any  Incremental  Facility  Loans
which are term loans. Each such reduction allocated to the Tranche A Loans shall
reduce, on a pro rata basis, the remaining  scheduled  installments of principal
due under the Tranche A Loans as set forth in Section  2.6(b)(ii)  hereof.  Each
such  reduction  allocated  to the Tranche B Loans shall  reduce,  on a pro rata
basis, the remaining scheduled installments of principal due under the Tranche B
Loans as set  forth  in  Section  2.6(c)  hereof.  Each  such  reduction  of the
Incremental  Facility  Loans  which are term loans  shall be  allocated  to such
Incremental  Facility  Loans,  on a pro rata basis,  to the remaining  scheduled
installments  of principal due in respect of such  Incremental  Facility  Loans.
Each prepayment hereunder of any Eurodollar Advances shall also be made together
with accrued interest on the amount so prepaid.

                         (B) As of the date of  cancellation  or  reduction  set
forth in any notice  thereof,  the  Revolving  Commitment  shall be  permanently
reduced to the amounts stated in the Borrower's  notice for all purposes herein,
and the Borrower shall pay to the  Administrative  Agent, for the benefit of the
Lenders,  the amount  necessary to reduce the principal  amount of the Revolving
Loans then  outstanding  to not more than the amount  equal to the result of (I)
the Available Revolving Commitment as so reduced, less (II) the aggregate amount
of L/C Obligations then outstanding,  less (III) the aggregate  principal amount
of Swing  Loans then  outstanding,  together  with the  accrued  interest on any
Eurodollar  Advances so prepaid.  To the extent  that any  Incremental  Facility
Loans  outstanding  as of the  date  of any  cancellation  or  reduction  of the
Revolving  Commitment  constitute  revolving  loans,  the  amount  stated in the
Borrower's notice of cancellation or reduction of the Revolving Commitment shall
be applied to reduce,  on a pro rata basis,  the  Revolving  Commitment  and the
Incremental  Facility Commitment  applicable to such Incremental Facility Loans,
and the Borrower shall pay to the  Administrative  Agent, for the benefit of the
Lenders,  the amount  necessary to reduce the principal  amount of the Revolving
Loans then  outstanding  to not more than the amount  equal to the result of (I)
the Available Revolving Commitment as so reduced, less (II) the aggregate amount
of L/C Obligations then outstanding,  less (III) the aggregate  principal amount
of Swing  Loans then  outstanding,  together  with the  accrued  interest on the
amount of any Eurodollar Advances so prepaid, and the amount necessary to reduce
the principal amount of the Incremental  Facility Loans then  outstanding  which
are revolving loans to not more than the amount of the Incremental Facility

                                       46
   53

Commitment applicable thereto as so reduced,  together with the accrued interest
on the amount of any Eurodollar Advances so prepaid.

                         (C) In connection  with any such  permanent  repayment,
the Borrower  shall  reimburse  the  Administrative  Agent and the  Lenders,  on
demand,  for  any  loss  or  out-of-pocket  expense  incurred  by any of them in
connection  with  such  repayment  of any  Eurodollar  Advances  as set forth in
Section  2.10.  Upon  receipt  of any notice of  prepayment  or  reduction,  the
Administrative  Agent shall promptly notify each Lender of the contents  thereof
by telephone or telecopy and of such Lender's  portion of the  prepayment or the
reduction,  as applicable.  Notwithstanding  the  foregoing,  the holders of the
Tranche B Loans shall have the right to decline any voluntary partial prepayment
of the  Tranche B Loans,  in which case the amount of such  prepayment  shall be
applied,  on a pro rata basis, to prepay the Tranche A Loans and the Incremental
Facility Loans which are term loans, if any, then  outstanding in the manner set
forth above,  and  thereafter,  on a pro rata basis,  to repay the amount of any
Revolving Loans then  outstanding  and any Incremental  Facility Loans which are
revolving loans then  outstanding,  in each case with a corresponding  permanent
reduction in the amount of the Commitments applicable to such Loans.

          Section 2.6 Repayment.

(a) Revolving  Commitment.  Commencing on September 30, 2003,  and at the end of
each  calendar   quarter   thereafter,   the  Revolving   Commitment   shall  be
automatically and permanently  reduced by an amount equal to the percentage (for
such quarter and year) as set forth below:


                                                          
                                                                    Annual Percentage of
                                     Percentage of Revolving        Revolving Commitment
                                  Commitment Outstanding as of        Outstanding as of
                                    September 30, 2003 to be      September 30, 2003 to be
        Quarters Ending               Reduced Each Quarter                 Reduced
     -------------------           ---------------------------   --------------------------

September 30, 2003 through                    2.50%                         5.00%
December 31, 2003

March 31, 2004 through December               5.00%                        20.00%
31, 2004

March 31, 2005 through December               6.25%                        25.00%
31, 2005

March 31, 2006 through December               6.25%                        25.00%
31, 2006

March 31, 2007 through June 30,              12.50%                        25.00%
2007



As of the date of each reduction of the Revolving Commitment as set forth above,
the  Borrower  shall pay to the  Administrative  Agent,  for the  benefit of the
Lenders,  the amount  necessary to reduce the principal  amount of the Revolving
Loans then  outstanding  to not more than the amount  equal to the result of (I)
the Available Revolving  Commitment after giving effect to such reduction,  less
(II) the aggregate  amount of L/C Obligations then  outstanding,  less (III) the
aggregate  principal amount of Swing Loans then  outstanding,  together with the
accrued  interest on the amount so prepaid and the  commitment  fee set forth in
Section 2.4(a) accrued through the date of the reduction with respect to the

                                       47
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amount reduced.  Any unpaid  principal of and accrued  interest on the Revolving
Loans and any other outstanding Obligations under the Revolving Commitment shall
be due and payable in full on the Initial Maturity Date.

               (b) Tranche A Loans.


                    (i) Tranche A  Commitment  Reduction.  In the event that the
aggregate  principal  amount of Tranche A Loans  outstanding as of the Tranche A
Commitment  Reduction  Date  shall not be at least  fifty  percent  (50%) of the
amount of the  Tranche A  Commitment  as of the  Agreement  Date,  the Tranche A
Commitment  shall be  automatically  and  permanently  reduced on the  Tranche A
Commitment  Reduction  Date by an amount  equal to the  excess of (A) the amount
equal  to  fifty  percent  (50%)  of the  amount  of the  Tranche  A  Commitment
outstanding as of the Agreement Date, over (B) the aggregate principal amount of
Tranche A Loans then outstanding. In the event that any portion of the Tranche A
Commitment  shall  remain  unfunded as of the Tranche A  Commitment  Termination
Date, the Tranche A Commitment shall be automatically and permanently reduced on
the  Tranche  A  Commitment  Termination  Date by the  amount  of such  unfunded
portion.

                    (ii)   Amortization  of  Tranche  A  Loans.   Commencing  on
September 30, 2003,  and at the end of each  calendar  quarter  thereafter,  the
outstanding  principal  balance of the Tranche A Loans then outstanding shall be
repaid by an amount  equal to the  percentage  (for such  quarter  and year) set
forth below:


                                                            
                                     Percentage of Tranche A        Annual Percentage of
                                     Loans Outstanding as of           Tranche A Loans
                                    September 30, 2003 to be          Outstanding as of
        Quarters Ending               Reduced Each Quarter        September 30, 2003 to be
        ---------------               --------------------
                                                                           Reduced

September 30, 2003 through                    2.50%                         5.00%
December 31, 2003

March 31, 2004 through December               5.00%                        20.00%
31, 2004

March 31, 2005 through December               6.25%                        25.00%
31, 2005

March 31, 2006 through December               6.25%                        25.00%
31, 2006

March 31, 2007 through June 30,              12.50%                        25.00%
2007



Additionally,  the Tranche A Loans shall be repaid as may be required by Section
2.7 hereof.  Any unpaid  principal  and  interest of the Tranche A Loans and any
other  outstanding  Obligations  under the Tranche A Commitment shall be due and
payable in full on the Initial Maturity Date.

               (c) Tranche B Loans. Commencing on September 30, 2003, and at the
end of each calendar quarter  thereafter,  the outstanding  principal balance of
the Tranche B Loans then outstanding shall be repaid as set forth below:

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                                                                    Annual Percentage of
                                  Percentage of Tranche B Loans        Tranche B Loans
                                   Outstanding as of September        Outstanding as of
        Quarters Ending           30, 2003 to be Reduced Each     September 30, 2003 to be
        ---------------              -------------------------
                                             Quarter                       Reduced

September 30, 2003 through                    0.25%                         0.50%
December 31, 2003

March 31, 2004 through December               0.25%                         1.00%
31, 2006

March 31, 2007                                0.25%                          ---

June 30, 2007                                 0.25%                          ---

September 30, 2007                           48.00%                          ---

December 31, 2007                            48.00%                          ---


Additionally,  the Tranche B Loans shall be repaid as may be required by Section
2.7 hereof.  Any unpaid  principal  and  interest of the Tranche B Loans and any
other  outstanding  Obligations  shall be due and  payable  in full on the Final
Maturity Date.

               (d)  Letter of Credit  Advances  and Swing  Loans.  All Base Rate
Advances  made pursuant to draws under the Letters of Credit and all Swing Loans
shall be deemed to be Advances  under the Revolving  Commitment and shall be due
and payable on the Initial Maturity Date.

               (e) Incremental Facility Loans. Any unpaid principal and interest
of the Incremental  Facility Loans and any other  outstanding  Obligations under
any of the Incremental  Facility Commitments shall be due and payable in full on
the Incremental Facility Maturity Date applicable thereto.

          Section  2.7  Mandatory  Repayments.  In  addition  to the  repayments
provided for in Section 2.6 hereof,  the Borrower shall, if required pursuant to
this Section 2.7, prepay the Loans, without any obligation to pay any prepayment
premium otherwise due, as follows:

               (a) Excess Cash Flow.  Commencing with respect to the fiscal year
of the Borrower  ended  December 31, 2003,  and with respect to each fiscal year
thereafter  during the term of this Agreement,  on or prior to April 15th of the
immediately  succeeding fiscal year, the Borrower shall make a prepayment of the
outstanding  principal  amount of the Loans in an amount equal to fifty  percent
(50%) of Excess Cash Flow for such fiscal year; provided,  however, that, in the
event that the Borrower  shall have  maintained a Borrower  Leverage  Ratio less
than  or  equal  to 3.00 to 1.00  for the two (2)  consecutive  fiscal  quarters
immediately  preceding  the date on which  any  prepayment  of the  Loans  would
otherwise be due under this Section  2.7(a) for which the  financial  statements
referred  to in Section 7.1 hereof have been  delivered  by the  Borrower to the
Administrative Agent, the Borrower shall not be required to make such prepayment
of the Loans. The amount of any prepayment made by the Borrower pursuant to this
Section  2.7(a)  shall be  applied  to prepay  the Loans as set forth in Section
2.7(e) below.

                                       49
   56

               (b) Disposition of Assets.

                    (i) If, after the Agreement Date, the Borrower or any of the
Designated Subsidiaries shall sell, transfer or otherwise dispose of (including,
without limitation, by way of condemnation or casualty) any Assets with Net Cash
Proceeds  in excess of  $10,000,000  in the  aggregate  during  the term of this
Agreement  (other than (A) the sale of obsolete  equipment  (other than Towers),
(B) the sale of  inventory in the  ordinary  course of  business,  (C) the sale,
transfer  or other  disposition  of Assets  that are  replaced  by  property  of
substantially equivalent value in the ordinary course of business, (D) the sale,
transfer  or other  disposition  of any  Equity  Interests  in any  Unrestricted
Subsidiary or Unrestricted  Investment,  (E) the lease of space on Towers in the
ordinary  course of business,  and (F) if consummated  within one (1) year after
the Agreement  Date,  the sale of the Broadcast  Services  Business) one hundred
percent  (100%)  of the Net  Cash  Proceeds  received  by the  Borrower  or such
Designated  Subsidiary from such Sales Transaction shall be applied, on the date
of receipt thereof by the Borrower or such Designated Subsidiary,  to prepay the
Loans as set forth in Section  2.7(e)  below;  provided,  however,  that, at the
Borrower's  election,  so long as no Default or Event of Default  then exists or
would be caused thereby, up to $20,000,000 of such Net Cash Proceeds received by
the Borrower or any Designated  Subsidiary in the aggregate  during any year may
be used by the Borrower or such  Restricted  Subsidiary to purchase or construct
one or more  Towers or  otherwise  to invest in capital  assets,  the  aggregate
Purchase  Price of which does not exceed such Net Cash  Proceeds  (or the sum of
such  Net  Cash  Proceeds  plus  amounts   otherwise   available  for  Permitted
Acquisitions),  so long as the Borrower or such Designated Subsidiary shall have
(A) entered into a definitive  contract  for purchase or  construction  no later
than six (6)  months  from the date of such sale or other  disposition,  and (B)
concluded such purchase or construction  within twelve (12) months from the date
of such sale or other disposition.

                    (ii) In the event the Borrower  elects to exercise its right
to reinvest Net Cash Proceeds  under Section  2.7(b)(i),  the Borrower  shall so
notify the  Administrative  Agent not less than five (5) Business  Days prior to
the proposed date of the closing of the sale or other  disposition of Assets and
shall, upon its or any Designated  Subsidiary's receipt of any Net Cash Proceeds
with respect to such sale or other  disposition  of Assets,  remit such Net Cash
Proceeds to the Administrative Agent to reduce the outstanding principal balance
of the  Revolving  Loans (but not the Term Loans nor the amount of the Revolving
Commitment).  Any  amount  in  excess  of the then  outstanding  balance  of the
Revolving Loans may be retained by the Borrower.  The Borrower shall  consummate
the Acquisition of the Towers or other capital assets not later than twelve (12)
months after the date of the applicable  Sales  Transaction.  To the extent that
the  Borrower  shall not have  consummated  any such  purchase as of twelve (12)
months after the date of such Sales Transaction (for whatever reason,  including
the occurrence of a Default or Event of Default hereunder), or the cash Purchase
Price  of  such  purchase  shall  be less  than  the Net  Cash  Proceeds  of the
applicable Sales  Transaction,  the Borrower shall apply such Net Cash Proceeds,
or the amount of such Net Cash  Proceeds  remaining  after giving  effect to any
purchases made during the twelve (12) month  reinvestment  period, to prepay the
Loans as set forth in Section 2.7(e) below.

                    (iii)  If  the   Borrower  or  the   applicable   Designated
Subsidiary or  Designated  Subsidiaries  shall sell,  transfer or dispose of the
Broadcast  Services  Business for Net Cash Proceeds of $100,000,000 or less in a
single transaction or a series of related  transactions which are consummated on
or before the date which is one year after the Agreement Date, the Borrower may,
so long as no  Default  or Event  of  Default  then  exists  or would be  caused
thereby, elect to reinvest such Net Cash Proceeds received by the Borrower or

                                       50
   57

any  Designated  Subsidiary  to  purchase  or  construct  one or more  Towers or
otherwise  invest in  assets,  the  aggregate  Purchase  Price of which does not
exceed such Net Cash Proceeds (or the sum of such Net Cash Proceeds plus amounts
otherwise available for Permitted Acquisitions), so long as the Borrower or such
Designated  Subsidiary  shall have (A) entered  into a  definitive  contract for
purchase or construction no later than six (6) months from the date of such sale
or other  disposition of Assets and (B) concluded such purchase or  construction
within  twelve (12) months  from the date of such sale or other  disposition  of
Assets.  If the Net Cash Proceeds from the sale,  transfer or disposition of the
Broadcast  Services Business exceeds  $100,000,000 in a single  transaction or a
series of related transactions which are consummated on or before the date which
is one year after the Agreement  Date, one hundred percent (100%) of such excess
Net Cash Proceeds over $100,000,000  received by the Borrower or such Designated
Subsidiary from such transaction or series of transactions shall be applied,  on
the date of receipt  thereof by the Borrower or such Designated  Subsidiary,  to
prepay the Loans as set forth in Section 2.7(e) below.

                    (c) Debt  Issuance.  If, after the  Agreement  Date,  Holdco
shall conduct any Eligible Debt Offering,  and the Borrower  Leverage Ratio on a
pro forma basis after giving  effect to such  Eligible  Debt  Offering  shall be
greater than 4.50 to 1.00, the Borrower  shall apply,  on the date of receipt of
the Net Cash Proceeds of such Eligible Debt Offering by Holdco,  an amount of up
to one  hundred  percent  (100%)  of the Net Cash  Proceeds  contributed  to the
Borrower or any of the  Designated  Subsidiaries  with respect to such  Eligible
Debt Offering, to prepay the Loans as set forth in Section 2.7(e) hereof, to the
extent  necessary to cause the Borrower  Leverage Ratio to be less than or equal
to 4.50 to 1.00 after  giving  effect to such  Eligible  Debt  Offering and such
prepayment.

                    (d) Termination of SBC Transaction.  If, after the Agreement
Date,  Holdco shall receive any amounts from SBC Wireless in connection with the
termination of the SBC Lease Documents  pursuant to Section 14.1 (or any similar
provision) of the SBC  Agreement to Sublease,  Holdco shall  contribute,  on the
date of its  receipt  thereof but in any event  within  twenty (20) days of such
termination, one hundred percent (100%) of such amounts as New Affiliated Equity
to the Borrower, and the Borrower shall apply one hundred percent (100%) of such
amounts to prepay the Loans as set forth in Section 2.7(e) hereof.

                    (e) Application of Payments.  Except as otherwise  permitted
in Section  2.7(b)  hereof,  the amount of any  prepayment  required  to be made
pursuant to this Section 2.7 shall be applied as follows: (i) first, (A) if such
prepayment is made on or before the earlier of (I) the date on which the Tranche
A  Commitment  shall have been fully  funded and (II) the  Tranche A  Commitment
Termination  Date, to  permanently  reduce,  on a pro rata basis,  the Tranche A
Commitment (including the aggregate principal amount of the Tranche A Loans then
outstanding),  the outstanding  principal  amount of the Tranche B Loans and, to
the extent then outstanding, the outstanding principal amount of any Incremental
Facility Loans which are term loans,  and (B) if such  prepayment is made at any
time  thereafter,  to permanently  reduce,  on a pro rata basis, the outstanding
principal  amount of the Tranche A Loans, the Tranche B Loans and, to the extent
then outstanding,  any Incremental  Facility Loans which are term loans, in each
case with the amount  allocated to the Tranche A Loans being  applied to reduce,
on a pro rata basis, the remaining scheduled installments of principal due under
the Tranche A Loans as set forth in Section  2.6(b)(ii)  hereof,  and the amount
allocated to the Tranche B Loans being  applied to reduce,  on a pro rata basis,
the remaining scheduled  installments of principal due under the Tranche B Loans
as set forth in Section 2.6(c) hereof, and the amount allocated to the

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Incremental  Facility  Loans being applied to reduce,  on a pro rata basis,  the
remaining  scheduled   installments  of  principal  due  thereunder;   and  (ii)
thereafter,  to prepay, on a pro rata basis, the outstanding principal amount of
the Revolving Loans, with a corresponding  permanent  reduction in the amount of
the Revolving  Commitment and, to the extent that any Incremental Facility Loans
which are revolving loans are then outstanding, the outstanding principal amount
of such Incremental Facility Loans, with a corresponding  permanent reduction in
the amount of the Incremental Facility Commitment  applicable thereto;  provided
however,  that if an Event of Default has occurred and is continuing at the time
of any  prepayment  required to be made pursuant to this Section 2.7, the amount
of such  prepayment  shall be applied to prepay,  on a pro rata basis,  the Term
Loans,  the Revolving  Loans and any  Incremental  Facility Loans. To the extent
that the  amount  of any  prepayment  made  pursuant  to  clause  (i)(A)  of the
preceding  sentence is  allocable  to the  Tranche A  Commitment,  the  unfunded
portion  of the  Tranche A  Commitment  shall be  permanently  reduced by a like
amount and the cash amount of such prepayment  shall be applied to reduce,  on a
pro rata basis, the Tranche A Loans then  outstanding,  the Tranche B Loans then
outstanding  and any  Incremental  Facility  Loans  which  are term  loans  then
outstanding. Accrued interest on the principal amount of each Eurodollar Advance
of the Term Loans and the Incremental  Facility Loans which are term loans being
prepaid, and accrued interest on the principal amount of each Eurodollar Advance
of the Tranche A  Commitment,  the  Revolving  Commitment  and the amount of any
Incremental  Facility Commitment  applicable to Incremental Facility Loans which
are revolving  loans being reduced,  pursuant to this Section 2.7 to the date of
such  prepayment or reduction  shall be paid by the Borrower  concurrently  with
such principal prepayment or commitment reduction, as applicable.  In connection
with any  mandatory  repayment  due under this Section  2.7, the Borrower  shall
reimburse the Administrative  Agent and the Lenders,  on demand, for any loss or
out-of-pocket  expense incurred by any of them in connection with such repayment
of any  Eurodollar  Advances as set forth in Section 2.10.  Notwithstanding  the
foregoing,  the  holders of the  Tranche B Loans shall have the right to decline
any  mandatory  partial  prepayment  of the  Tranche B Loans,  in which case the
amount of such prepayment  shall be applied,  on a pro rata basis, to prepay the
Tranche A Loans and the Incremental Facility Loans which are term loans, if any,
then  outstanding in the manner set forth above,  and thereafter,  on a pro rata
basis,  to reduce  permanently  the  Revolving  Commitment  and the  Incremental
Facility Commitment applicable to Incremental Facility Loans which are revolving
loans in the manner set forth above.

          Section 2.8 Notes; Loan Accounts.

                    (a) The Loans  shall be  repayable  in  accordance  with the
terms and provisions set forth herein,  and shall be evidenced by the Notes. One
Revolving Note, one Tranche A Note and one Tranche B Note shall be issued by the
Borrower to the order of each Lender in accordance  with its  Commitment  Ratios
with respect to such Loans. The Swing Loan Note shall be payable to the order of
the Swing  Loan  Lender in the  amount of the Swing Loan  Committed  Amount.  If
applicable, one Incremental Facility Note shall be issued by the Borrower to the
order of each Incremental  Facility Lender in accordance with its pro rata share
of the  Incremental  Facility  Commitments.  Each  Note  shall be  issued by the
Borrower to the order of a Lender or the Swing Loan Lender,  as the case may be,
and shall be duly executed and delivered by one or more  Authorized  Signatories
of the Borrower.

                    (b) Each  Lender may open and  maintain  on its books in the
name of the Borrower a loan account with respect to such Lender's portion of the
Loans and interest thereon. Each Lender which opens such a loan account shall

                                       52
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debit such loan account for the principal  amount of its portion of each Advance
made and accrued  interest  thereon and shall  credit such loan account for each
payment on account of  principal  of or interest on its Loans.  The records of a
Lender with  respect to the loan account  maintained  by it shall be prima facie
evidence  of the Loans of such  Lender and  accrued  interest  thereon,  but the
failure of any Lender to maintain such records or to make any such notations, or
any  error or  mistake  in such  notations,  shall  not  affect  the  Borrower's
repayment obligations with respect to such Loans.

          Section 2.9 Manner of Payment

                    (a) Each payment  (including any prepayment) by the Borrower
on account of the principal of or interest on the Loans, commitment fees, letter
of credit fees and any other amount owed to any of the Credit Parties under this
Agreement,  any fee  letters or the Notes shall be made not later than 2:00 p.m.
(New York time) on the date  specified for payment  under this  Agreement to the
Administrative  Agent at the  Administrative  Agent's Office, for the account of
the applicable  Credit Party,  in Dollars in immediately  available  funds.  Any
payment  received by the  Administrative  Agent after 2:00 p.m.  (New York time)
shall, solely for the purpose of calculating interest, be deemed received on the
next Business Day. Receipt by the Administrative  Agent of any payment hereunder
at or prior to 2:00 p.m.  (New York time) on any Business Day shall be deemed to
constitute  receipt  on such  Business  Day.  In the case of a  payment  for the
account  of  a  Lender,  the  Administrative   Agent  will  promptly  thereafter
distribute  the  amount  so  received  in  like  funds  to such  Lender.  If the
Administrative  Agent shall not have  received  any payment from the Borrower as
and when due, the  Administrative  Agent will promptly notify the Credit Parties
accordingly.

                    (b) The Borrower agrees to pay principal, interest, fees and
all other Obligations due hereunder,  under any fee letters, under the Notes, or
under the other Loan Documents  without set-off or counterclaim or any deduction
whatsoever  (including,  without  limitation,  any deduction or withholding  for
present or future  income,  excise,  stamp or  franchise  taxes and other taxes,
fees, duties,  withholdings or other charges of any nature whatsoever imposed by
any taxing  authority,  excluding,  however,  taxes  attributable  to any Credit
Party's  failure to comply with the  requirements  of Section  2.13(b) (but only
with  respect  to  payments  to  be  made  to  such  Credit  Party),  franchise,
withholding,  branch or other similar taxes,  duties, fees or charges imposed on
or measured by any Credit  Party's  net income or  receipts  (such  non-excluded
items being called "Taxes")).

                    (c) Prior to the  acceleration  of the Loans  under  Section
10.2 hereof or the Final  Maturity  Date (or,  if  applicable,  the  Incremental
Facility  Maturity Date),  and other than with respect to payments made pursuant
to Section 2.5 or Section 2.7 hereof (which  shall,  in each case, be applied as
set forth therein),  if some but less than all amounts due from the Borrower are
received by the Administrative  Agent, the Administrative Agent shall distribute
such  amounts in the  following  order of  priority to the Lenders on a pro rata
basis:  (i) FIRST,  to the payment of any fees,  costs or expenses  then due and
payable to any of the Credit Parties hereunder or under any other Loan Document;
(ii) SECOND, to the payment of interest then due and payable on the Loans; (iii)
THIRD,  on a pro rata basis, to the payment of principal then due and payable on
the Term Loans and any  Incremental  Facility  Loans which are term loans;  (iv)
FOURTH, on a pro rata basis, to the payment of principal then due and payable on
the  Revolving  Loans and any  Incremental  Facility  Loans which are  revolving
loans, together with the principal amount of the Swing Loans; and (v) FIFTH, to

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the payment of all other  amounts  not  otherwise  referred  to in this  Section
2.9(c) then due and payable to the Credit  Parties  hereunder or under any other
Loan Document.

                    (d) Subject to any contrary  provisions in the definition of
Eurodollar  Advance  Period,  if any payment under this  Agreement or any of the
other Loan  Documents  is  specified to be made on a day which is not a Business
Day, it shall be made on the next Business Day, and such extension of time shall
in such case be included in computing  interest and fees,  if any, in connection
with such payment. Section 2.10 Reimbursement

                    (a) Whenever any Lender shall sustain or incur any losses or
out-of-pocket  expenses in connection with (i) failure by the Borrower to borrow
any  Eurodollar  Advance after having given notice of its intention to borrow in
accordance with Section 2.2 hereof (whether by reason of the Borrower's election
not to  proceed or the  non-fulfillment  of any of the  conditions  set forth in
Article 4), (ii)  prepayment of any  Eurodollar  Advance in whole or in part for
any reason,  or (iii) failure by the Borrower to prepay any  Eurodollar  Advance
after giving notice of its intention to prepay such Advance, the Borrower agrees
to pay to such Lender,  upon demand,  an amount  sufficient to  compensate  such
Lender  for all such  losses and  reasonable  out-of-pocket  expenses  resulting
therefrom.  Such Lender's good faith  determination of the amount of such losses
or  out-of-pocket   expenses,  as  set  forth  in  writing  and  accompanied  by
calculations in reasonable detail  demonstrating the basis for its demand, which
shall be delivered to the Borrower by the Administrative Agent on behalf of such
Lender, shall be presumptively correct.

                    (b)  Expenses  subject  to  reimbursement   hereunder  shall
include, without limiting the generality of the foregoing,  expenses incurred by
any Lender or any participant of such Lender  permitted  hereunder in connection
with the  re-employment of funds prepaid,  repaid,  not borrowed or paid, as the
case may be, and the amount of the expenses subject to  reimbursement  hereunder
shall be the excess, if any, of (i) the interest or other cost to such Lender of
the deposit or other source of funding used to make any such Eurodollar  Advance
for the  remainder  of its  Eurodollar  Advance  Period,  over (ii) the interest
earned  (or  to  be  earned)  by  such  Lender  upon  the  re-lending  or  other
re-deployment of the amount of such Eurodollar  Advance for the remainder of its
putative Eurodollar Advance Period.

          Section 2.11 Pro Rata Treatment.

                    (a)  Advances.  Each  Advance  of any of the Loans  from the
Lenders  shall  be made pro rata on the  basis  of their  respective  Commitment
Ratios.

                    (b) Payments  Prior to  Declaration  of an Event of Default.
Except as provided in Section  2.2(e)(iv),  prior to the declaration of an Event
of Default by the  Administrative  Agent on behalf of the Lenders  under Section
10.2 hereof,  each payment and  prepayment  of principal of the Loans,  and each
payment of interest  on the Loans,  shall be made to the Lenders pro rata on the
basis of their  respective  Commitment  Ratios.  If any Lender  shall obtain any
payment (whether  involuntary,  through the exercise of any right of set-off, or
otherwise)  on account of the Loans made by it in excess of its ratable share of
the Loans under its  Commitment  Ratio with respect  thereto,  such Lender shall
forthwith purchase from the other Lenders such participations in the applicable

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Loans  made by them as shall be  necessary  to cause such  purchasing  Lender to
share the  excess  payment  ratably  with each of the other  Lenders;  provided,
however,  that  if all or any  portion  of such  excess  payment  is  thereafter
recovered from such purchasing  Lender,  such purchase from each Lender shall be
rescinded,  and each  such  Lender  shall  repay to the  purchasing  Lender  the
purchase  price to the extent of such  recovery.  The  Borrower  agrees that any
Lender so  purchasing  a  participation  from  another  Lender  pursuant to this
Section  2.11(b) may, to the fullest extent  permitted by law,  exercise all its
rights  of  payment  (including  the  right of  set-off)  with  respect  to such
participation  as  fully  as if such  Lender  were the  direct  creditor  of the
Borrower in the amount of such  participation.  The  provisions  of this Section
2.11(b) set forth the rights of the Lenders with respect to payment, and are not
enforceable for the benefit of the Borrower.

                    (c)  Payments  Subsequent  to  Declaration  of an  Event  of
Default.   Subsequent  to  the  declaration  of  an  Event  of  Default  by  the
Administrative  Agent on  behalf  of the  Lenders  under  Section  10.2  hereof,
payments  and  prepayments  made  to any of the  Credit  Parties,  or  otherwise
received  by any of the Credit  Parties,  shall be  distributed  as  provided in
Section 10.3 hereof.

Section 2.12 Capital  Adequacy.  If any Lender shall have reasonably  determined
that the adoption (after the Agreement Date) of any Applicable Law regarding the
capital adequacy of banks or bank holding companies, or any change in Applicable
Law after the  Agreement  Date or any  change  after the  Agreement  Date in the
interpretation or administration thereof by any governmental authority,  central
bank or comparable  agency  charged with the  interpretation  or  administration
thereof, or compliance by such Lender with any directive issued or adopted after
the date hereof regarding  capital adequacy  (whether or not having the force of
law) of any such governmental  authority,  central bank or comparable agency, in
each case first  promulgated  after the  Agreement  Date,  has or would have the
effect of reducing the rate of return on such Lender's  capital as a consequence
of its obligations  hereunder to a level below that which it could have achieved
but for such  adoption,  change or compliance  (taking into  consideration  such
Lender's  policies  with  respect to capital  adequacy  immediately  before such
adoption, change or compliance and assuming that such Lender's capital was fully
utilized prior to such adoption,  change or compliance) by an amount  reasonably
deemed by such Lender to be material, then such Lender shall promptly notify the
Borrower of such  adoption,  compliance,  or change.  Within  sixty (60) days of
written  notice by such  Lender,  the Borrower  shall,  in its  discretion,  (i)
provide a  replacement  lender or lenders  for such  Lender,  which  replacement
lender or lenders will be subject to the approval of the  Administrative  Agent,
which, so long as no Default or Event of Default shall then exist,  shall not be
unreasonably  withheld,  and  the  Administrative  Agent,  such  Lender  and the
Borrower  shall take all  necessary  actions to transfer the rights,  duties and
obligations  of such Lender to such  replacement  lender or lenders  within such
sixty (60) day period (including, without limitation, the payment in full of all
Obligations  hereunder due to the Lender being  replaced),  or (ii)  thereafter,
from time to time upon demand by such  Lender,  promptly pay to such Lender such
additional  amounts as shall be sufficient  to  compensate  such Lender for such
reduced return,  together with interest on such amount from the fourth (4th) day
after the date of demand until payment in full thereof at the Base Rate plus the
Applicable  Margin  in  effect  for  Base  Rate  Advances  under  the  Revolving
Commitment;  provided, however, that notwithstanding the foregoing, the Borrower
shall have no obligation to provide any such  replacement  bank or make any such
payment  in the  event  that  the  first  such  demand  in  respect  of any such
regulatory change,  request or directive  regarding capital adequacy was sent by
such Lender more than ninety (90) days after it became aware of the

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applicability of such regulatory change, request or directive to the Loans. Such
Lender will designate a different  lending office if such designation will avoid
the need for,  or reduce the amount of, such  compensation  and will not, in the
judgment of such Lender, be otherwise materially disadvantageous to such Lender.
A certificate  of such Lender setting forth the amount to be paid to such Lender
by the  Borrower  as a result of any event  referred  to in this  paragraph  and
supporting  calculations  in  reasonable  detail  shall  be  conclusive,  absent
manifest error.

Section 2.13      Taxes.

                    (a) If the Borrower  shall be required by Applicable  Law to
deduct any Taxes from or in respect of any amounts payable to the Administrative
Agent or any other  Credit  Party  hereunder  or under any Note,  (i)  except as
otherwise  provided in this  Section  2.13,  the sum payable  shall be increased
("Additional   Amounts")  as  necessary  so  that,  after  making  all  required
deductions (including,  without limitation,  deductions applicable to additional
sums payable  under  Section  2.9(b)),  the  Administrative  Agent or such other
Credit  Party,  as the case may be, shall  receive an amount equal to the sum it
would have received had no deductions  been made,  (ii) the Borrower  shall make
such  deductions,  and (iii) the Borrower shall pay the full amount  deducted to
the relevant taxation authority or other authority in accordance with Applicable
Law. Moreover,  if any Taxes (which for purposes of the remainder of this clause
(a) shall  include,  but not be  limited  to,  taxes and  charges  imposed on or
measured by net income or receipts of any Credit  Party by any  jurisdiction  to
the extent  imposed on  Additional  Amounts) are directly  asserted  against any
Credit  Party  with  respect  to any  payment  received  by  such  Credit  Party
hereunder,  such  Credit  Party may pay such  Taxes,  and,  except as  otherwise
provided in this Section,  the Borrower will promptly pay such Additional Amount
(including,  without  limitation,  any  penalties,  interest or  expenses) as is
necessary  in order that the net amount  received  and  retained  by such Credit
Party after the payment of such Taxes (including,  without limitation, any Taxes
on such  additional  amount) shall equal the amount such Credit Party would have
received and retained had no such Taxes been asserted;  provided,  however, such
Credit Party shall promptly give written notice to the Borrower, accompanied by,
to the extent  provided by the  relevant  taxing  authority,  a  calculation  in
reasonable  detail of the amount  demanded and evidence of the Taxes  imposed on
such  Credit  Party,  after  such  Credit  Party  has  actual  knowledge  of the
imposition of any Taxes. Where notice is not given to the Borrower within ninety
(90) days after the Credit Party  receives  written  notice of the  assertion of
Taxes and the Borrower does not  otherwise  have notice of such  assertion,  the
Borrower shall not be required to pay penalties,  additions to taxes,  expenses,
and  interest  accruing  on such Taxes from the date  ninety (90) days after the
receipt by the Credit  Party of written  notice of the  assertion  of such Taxes
until the date that the  Borrower  receives  such  notice.  The  Borrower  shall
furnish to such Credit Party within  forty-five (45) days (or as soon thereafter
as  available)  after  the date the  payment  of any  Taxes is due  pursuant  to
Applicable Law true and correct copies of tax receipts evidencing payment by the
Borrower  to the  extent  that such  receipts  are  issued  therefor.  Except as
otherwise provided in this Section,  if the Borrower fails to pay any Taxes that
it is required to pay  pursuant to the terms of this  Agreement  when due to the
appropriate  taxing  authority or fail to remit to any of the Credit Parties the
required  receipts or other required  documentary  evidence,  the Borrower shall
indemnify the Credit Parties for any  incremental  Taxes,  interest or penalties
that may become payable by the Credit Parties  primarily as a result of any such
failure.

                    (b) Each Lender that is a United States person that is not a
"domestic" corporation (as defined in Section 7701 of the Code) shall deliver to
the Borrower and the  Administrative  Agent,  on or prior to the Agreement  Date
(or, if such Lender becomes a party to this Agreement  (whether by assignment or
otherwise)  after the Agreement  Date, the date upon which such Lender becomes a
party hereto) and on or prior to the first Business Day of each calendar year

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thereafter,  and from time to time thereafter as reasonably requested in writing
by the  Borrower,  one  complete,  duly  executed  original IRS Form W-9, or any
successor  form  thereto.  Each Lender that is not a United States person within
the meaning of Section 7701 of the Code (a "Foreign  Lender")  shall  deliver to
the Borrower and the Administrative Agent, on or prior to the Agreement Date (or
if such Foreign Lender becomes a party to this Agreement  (whether by assignment
or  otherwise)  after the date hereof,  the date upon which such Foreign  Lender
becomes  a party  hereto)  and on or prior  to the  first  Business  Day of each
calendar  year  thereafter  and  from  time to  time  thereafter  as  reasonably
requested in writing by the Borrower, either (i) two (2) complete, duly executed
original IRS Forms W-8ECI,  W-8IMY or W-8BEN, as appropriate,  or any successors
thereto,  establishing  that  such  Foreign  Lender  is on the date of  delivery
thereof  entitled to receive any and all payments  from the Borrower  under this
Agreement  free from  withholding of United States federal income tax or (ii) in
the case of such Foreign  Lender that is not legally  entitled to deliver any of
the forms  listed in the  foregoing  clause  (i),  (A) a  certificate  of a duly
authorized officer of such Foreign Lender to the effect that such Foreign Lender
is not (I) a "bank" within the meaning of Section 881(c)(3)(A) of the Code, (II)
a "10  percent  shareholder"  of the  Borrower  within  the  meaning  of Section
881(c)(3)(B)  of the Code or (III) a controlled  foreign  corporation  receiving
interest from a related person within the meaning of Section 881(c)(3)(C) of the
Code (such  certificate,  an "Exemption  Certificate") and (B) two (2) complete,
duly  executed  original  IRS Forms  W-8BEN or W-8IMY,  as  appropriate,  or any
successor thereto, certifying that such Foreign Lender is entitled to a complete
exemption  from United States federal  withholding  tax on payments of interest.
Each Foreign Lender shall,  from time to time,  deliver updated or corrected IRS
Forms W-8ECI, IRS Forms W-8IMY, IRS Forms W-8BEN or Exemption  Certificates,  or
any successors thereto, to the Borrower and the Administrative  Agent upon their
expiration or obsolescence to the extent and in the manner required under United
States federal tax law or after the  occurrence of any event  requiring a change
in the most recent  forms or other  documents  delivered  by such  Lender.  Such
Credit  Party shall  promptly  provide  written  notice to the  Borrower and the
Administrative  Agent  at any  time  it  determines  that it is no  longer  in a
position to provide any  previously  delivered  form or other  document  (or any
other form or  certification  adopted  by the IRS).  The  Borrower  shall not be
required to pay any Additional Amounts under Section 2.9(b),  Section 2.13(a) or
Section  6.10(a)  hereof to a Lender if such Foreign  Lender (x) fails to comply
with the  requirements  of this  Section  2.13(b),  (y) fails to  qualify  for a
complete reduction or exemption of United States federal tax withholding for any
reason other than a change in the United States federal tax law, or the official
interpretation  thereof,  in each case,  after the delivery of IRS Forms W-8ECI,
IRS  Forms  W-8IMY,  IRS  Forms  W-8BEN  or an  Exemption  Certificate,  or  any
successors  thereto,  or (z) is treated as a "conduit entity" within the meaning
of  U.S.  Treasury  Regulations  Section  1.881-3  or any  successor  provision.
Notwithstanding the foregoing, if at the date of an assignment pursuant to which
a Foreign Lender becomes a party to this Agreement, the assignor was entitled to
payments under Section 2.13(a) hereof,  then, to such extent, the assignee shall
not be required to deliver IRS Forms W-8ECI,  IRS Forms W-8IMY, IRS Forms W-8BEN
or  an  Exemption  Certificate,  or  any  successors  thereto,   establishing  a
withholding rate for such Foreign Lender that is less than the rate the assignor
was subject to, and the assignee shall be entitled to receive Additional Amounts
to such extent the assignor was so entitled.

(c) Each of the Credit Parties agrees that it will, to the extent reasonable and
without material cost or risk to it, (i) take all actions reasonably requested

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by the Borrower to maintain all exemptions,  if any, available to it from United
States federal  withholding  taxes  (whether  available by treaty,  statute,  or
existing  administrative  waiver) and (ii) otherwise cooperate with the Borrower
to minimize any amounts payable by the Borrower under this Section 2.13.

                    (d) Any Credit Party that becomes  aware that it is entitled
to receive a refund (whether by way of a direct payment or by offset) in respect
of  Additional  Amounts paid by the Borrower,  which refund would  reasonably be
considered  allocable to or resulting from such payment or indemnification  made
pursuant  to this  Section  2.13,  shall  promptly  notify the  Borrower  of the
availability of such refund and shall, within thirty (30) days after the receipt
of a request from the  Borrower,  apply for such refund with the Borrower  being
responsible  for any  incremental  costs  associated  with such refund  request;
provided, however, that (i) the Borrower shall not be entitled to any damages as
a result of the  failure of such Credit  Party to so notify the  Borrower of the
availability  of such refund and (ii) the  Borrower  shall not have the right to
examine the books or records of any Credit Party.  If any Credit Party  receives
any such refund (as described in the preceding sentence),  so long as no Default
or Event of Default has occurred and is continuing,  it shall promptly repay the
amount of such  refund  (together  with any  interest  received  thereon) to the
Borrower;  provided,  however,  that  the  Borrower,  upon  the  request  of the
applicable Credit Party, shall repay the amount paid over to the Borrower in the
event such  Credit  Party is  required  to repay such  refund to the  applicable
authority.

                    (e)  If the  Borrower  is or  becomes  required  to pay  any
Additional Amounts to a Credit Party pursuant to this Section 2.13, the Borrower
shall have the right,  upon notice to the  Administrative  Agent and such Credit
Party, to (i) prepay without penalty,  on non-pro rata basis, all or any portion
of a Loan held by such Credit  Party plus all interest  and  Additional  Amounts
owing to such Credit Party as of the date of such prepayment,  (ii) require such
Credit Party to use reasonable  efforts to designate a different  lending office
for funding or booking its Loan under this Agreement or to assign its rights and
obligations  under  this  Agreement  to  another  of its  offices,  branches  or
affiliates, or (iii) require such Credit Party to effect an assignment of all of
its rights  and  obligations  under  this  Agreement  to  another  Credit  Party
designated  by the  Borrower if, in the case of the  foregoing  clauses (ii) and
(iii),  such  designation  or assignment  (A) would  eliminate or reduce amounts
payable  pursuant  to Section  2.13 hereof in the future and (B) would not cause
the  imposition  on such  Credit  Party  of any  additional  costs  or  legal or
regulatory burdens deemed by such Credit Party, in its reasonable  judgment,  to
be material or otherwise disadvantageous to such Credit Party.

          Section 2.14 Letters of Credit.

                    (a) Letter of Credit Committed Amount.

                         (i) Subject to the terms and  conditions  hereof,  each
Issuing Bank, in reliance on the agreements of the L/C Participants set forth in
Section  2.14(d)(i)  hereof,  agrees to issue Letters of Credit  denominated  in
Dollars for the account of the Borrower  prior to the Initial  Maturity Date, in
such form as may be approved  from time to time by such Issuing  Bank;  provided
that no Issuing Bank shall issue any Letter of Credit if, after giving effect to
such issuance,  (A) the aggregate amount of the L/C Obligations would exceed the
Letter of Credit Committed Amount, or (B) the sum of (I) the aggregate principal
amount of Revolving Loans then  outstanding,  plus (II) the aggregate  principal
amount of Swing Loans then outstanding, plus (III) the aggregate amount of L/C

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Obligations then outstanding,  would exceed the Available Revolving  Commitment.
Schedule  2.14 lists all of the issued and  outstanding  Letters of Credit as of
the Agreement Date.

                         (ii) Each  Letter of Credit  shall (A) be either  (x) a
standby letter of credit issued to support obligations of the Borrower or any of
the  Designated  Subsidiaries,  contingent or otherwise,  to finance the working
capital and business needs of the Borrower or any of the Designated Subsidiaries
in the  ordinary  course of  business,  or (y) if  available  to the  applicable
Issuing Bank, a commercial letter of credit issued in respect of the purchase of
goods or services by the Borrower or any of the Designated  Subsidiaries  in the
ordinary course of business, and (B) expire no later than the earlier of (x) the
date that is twelve (12) months after the date of its issuance and (y) the fifth
(5th) Business Day prior to the Initial Maturity Date

                         (iii)  Each  Letter of Credit  shall be  subject to the
Uniform Customs and, to the extent not inconsistent  therewith,  the laws of the
State of New York or, in any case where the applicable  Issuing Bank issues such
Letters of Credit from an office located outside of the United States,  the laws
of the jurisdiction in which such office is located.

                         (iv) No Issuing  Bank shall at any time be obligated to
issue any Letter of Credit  hereunder if such issuance  would  conflict with, or
cause such Issuing Bank or any L/C  Participant to exceed any limits imposed by,
any Applicable Law.

                    (b)  Procedure  for  Issuance  of  Letters  of  Credit.  The
Borrower may request that an Issuing Bank issue a Letter of Credit,  at any time
prior to the fifth (5th)  Business Day prior to the Initial  Maturity  Date,  by
delivering  to such  Issuing Bank at its address for notices  specified  herein,
with a copy to the  Administrative  Agent,  a Request for  Issuance of Letter of
Credit,  completed  to the  satisfaction  of such Issuing  Bank,  and such other
certificates,  documents and other papers and  information  as such Issuing Bank
may request.  Upon receipt of any Request for Issuance of Letter of Credit,  the
applicable   Issuing  Bank  will  process  the  Letter  of  Credit   Application
accompanying   such  Request  for   Issuance  of  Letter  of  Credit,   and  the
certificates,  documents  and other  papers and  information  delivered to it in
connection  therewith,  in accordance  with its customary  procedures  and shall
promptly issue the Letter of Credit requested thereby (but in no event shall any
Issuing  Bank be required to issue any Letter of Credit  earlier  than three (3)
Business  Days after its receipt of any Request for Issuance of Letter of Credit
therefor  and all such  other  certificates,  documents  and  other  papers  and
information  relating  thereto) by issuing the original of such Letter of Credit
to the  beneficiary  thereof  or as  otherwise  may be agreed by the  applicable
Issuing Bank and the Borrower.  The applicable Issuing Bank shall furnish a copy
of such Letter of Credit to the Borrower and the  Administrative  Agent promptly
following the issuance thereof.

                    (c) Fees, Commissions and Other Charges.

                         (i) The Borrower shall pay to the Administrative Agent,
for the account of each Issuing Bank and the L/C  Participants,  with respect to
each Letter of Credit issued by such Issuing Bank hereunder,  a per annum letter
of credit  fee as and to the  extent  set forth in  Section  2.4(b)  hereof.  In
addition,  the Borrower shall pay to each Issuing Bank, for its own account,  an
issuing fee, as set forth in Section 2.4(c) hereof,  with respect to each Letter
of Credit issued by such Issuing Bank hereunder.

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                         (ii) In addition to the foregoing fees and commissions,
the  Borrower  shall pay or  reimburse  each  Issuing  Bank for such  normal and
customary  costs and expenses as are incurred or charged by such Issuing Bank in
issuing, effecting payment under, amending or otherwise administering any Letter
of Credit issued by it.

                         (iii)The Administrative Agent shall, promptly following
its receipt  thereof,  distribute to each Issuing Bank and the L/C  Participants
all  fees  and  commissions  received  by the  Administrative  Agent  for  their
respective accounts pursuant to this Section 2.14(c).

                    (d) L/C Participations.

                         (i) Each Issuing Bank  irrevocably  agrees to grant and
hereby grants to each L/C Participant  and, to induce such Issuing Bank to issue
Letters of Credit hereunder,  each L/C Participant  irrevocably agrees to accept
and purchase and hereby  accepts and  purchases  from such Issuing  Bank, on the
terms and conditions  hereinafter stated, for such L/C Participant's own account
and  risk an  undivided  interest  equal  to such  L/C  Participant's  Revolving
Commitment  Ratio from time to time in effect in such Issuing  Bank's rights and
obligations  under each Letter of Credit  issued by it hereunder and each Letter
of Credit  Application  and the amount of each draft paid by such  Issuing  Bank
thereunder.  Each L/C Participant  unconditionally  and irrevocably  agrees with
each Issuing Bank that,  if a draft is paid under any Letter of Credit for which
such Issuing Bank is not  reimbursed in full by the Borrower in accordance  with
the terms of this Agreement, such L/C Participant shall pay to such Issuing Bank
upon demand at such  Issuing  Bank's  address for  notices  specified  herein an
amount equal to such L/C  Participant's  then Revolving  Commitment Ratio of the
amount of such draft, or any part thereof,  which is not so reimbursed.  If such
demand is made prior to 12:00 noon (New York time) on a Business  Day,  such L/C
Participant shall make such payment to the applicable  Issuing Bank prior to the
end of such  Business Day and  otherwise  such L/C  Participant  shall make such
payment on the next succeeding Business Day.

                         (ii)  If any  amount  required  to be  paid  by any L/C
Participant to any Issuing Bank pursuant to Section 2.14(d)(i) in respect of any
unreimbursed  portion of any payment  made by such Issuing Bank under any Letter
of  Credit  is not  paid on the  date  such  payment  is due but is paid to such
Issuing Bank within three (3) Business  Days after the date such payment is due,
such L/C Participant shall pay to such Issuing Bank on demand an amount equal to
the product of (A) such amount,  times (B) the daily average Federal Funds Rate,
as quoted by the applicable Issuing Bank, times (C) a fraction, the numerator of
which is the number of days that elapse  during such period and the  denominator
of which is 360. If any such amount  required to be paid by any L/C  Participant
pursuant to Section  2.12(d)(i) is not in fact made  available to the applicable
Issuing Bank by such L/C  Participant  within three (3) Business  Days after the
date such  payment is due,  such  Issuing Bank shall be entitled to recover from
such L/C Participant,  on demand,  such amount with interest thereon  calculated
from  such due  date at the rate per  annum  applicable  to Base  Rate  Advances
hereunder.  A certificate  of the  applicable  Issuing Bank submitted to any L/C
Participant  with respect to any amounts  owing under this  subsection  shall be
conclusive in the absence of manifest error.

                         (iii)  Whenever,  at any time after an Issuing Bank has
made payment  under any Letter of Credit  issued by it and has received from any
L/C  Participant  its pro rata share of such payment in accordance  with Section
2.14(d)(i), such Issuing Bank receives any payment related to such Letter of

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Credit (whether directly from the Borrower or otherwise,  including  proceeds of
Collateral  applied thereto by such Issuing Bank), or any payment of interest on
account  thereof,  such Issuing Bank will, if such payment is received  prior to
12:00 noon (New York time) on a Business Day, distribute to such L/C Participant
its pro rata share  thereof  prior to the end of such Business Day and otherwise
such Issuing Bank will distribute  such payment on the next succeeding  Business
Day; provided, however, that in the event that any such payment received by such
Issuing  Bank shall be required to be returned by such  Issuing  Bank,  such L/C
Participant  shall return to the  applicable  Issuing  Bank the portion  thereof
previously distributed by such Issuing Bank to it.

                    (e) Reimbursement Obligation of the Borrower.

                         (i) The Borrower agrees to reimburse each Issuing Bank,
on the same  Business  Day on which a draft is  presented  under  any  Letter of
Credit and paid by such Issuing  Bank,  provided that such Issuing Bank provides
notice to the Borrower  prior to 12 noon (New York time) on such  Business  Day,
and  otherwise  the  Borrower  will  reimburse  such  Issuing  Bank on the  next
succeeding Business Day. The failure to provide such notice shall not affect the
Borrower's  absolute and  unconditional  obligation to reimburse the  applicable
Issuing  Bank for any draft paid  under any  Letter of Credit  issued by it. The
applicable  Issuing Bank shall  provide  notice to the Borrower on such Business
Day as a draft is presented and paid by such Issuing Bank  indicating the amount
of (A) such draft so paid and (B) any  taxes,  fees,  charges or other  costs or
expenses  incurred by such Issuing Bank in connection  with such  payment.  Each
such  payment  shall be made to the  applicable  Issuing Bank at its address for
notices specified herein in Dollars in immediately available funds.

                         (ii)  Interest  shall be payable on any and all amounts
remaining  unpaid by the Borrower under this Section  2.14(e) from the date such
amounts  are drawn  until  payment in full at the rate which would be payable on
any outstanding Base Rate Advances of Revolving Loans.

                         (iii) Each  drawing  under any  Letter of Credit  shall
constitute a request,  with no further action  required,  by the Borrower to the
Administrative Agent for a borrowing pursuant to Section 2.2(b) in the amount of
such drawing.  The funding date with respect to such borrowing shall be the date
of such drawing.

                    (f) Obligations Absolute.

                         (i) The Borrower's  obligations under this Section 2.14
shall  be  absolute  and  unconditional  under  any  and all  circumstances  and
irrespective  of any  set-off,  counterclaim  or defense  to  payment  which the
Borrower may have or have had against any Issuing Bank,  any L/C  Participant or
any beneficiary of a Letter of Credit.

                         (ii) The  Borrower  also agrees with each  Issuing Bank
and each L/C  Participant  that neither any Issuing Bank nor any L/C Participant
shall be responsible  for, and the Borrower's  reimbursement  obligations  under
Section  2.14(e)(i)  shall not be  affected  by,  among  other  things,  (A) the
validity or genuineness of documents or of any endorsements thereon, even though
such documents shall in fact prove to be invalid,  fraudulent or forged,  or (B)
any dispute  between or among the Borrower and any  beneficiary of any Letter of
Credit or any other party to which such Letter of Credit may be transferred, or

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(C) any claims  whatsoever of Borrower against any beneficiary of such Letter of
Credit or any such transferee.

                         (iii) Neither any Issuing Bank nor any L/C  Participant
shall be liable for any error, omission,  interruption or delay in transmission,
dispatch  or  delivery  of  any  message  or  advice,  however  transmitted,  in
connection with any Letter of Credit,  except for errors or omissions  caused by
the applicable Issuing Bank's gross negligence or willful misconduct.

                         (iv)  The  Borrower  agrees  that any  action  taken or
omitted by an Issuing Bank under or in  connection  with any Letter of Credit or
the  related  drafts or  documents,  if done in absence of gross  negligence  or
willful misconduct and in accordance with the standards of care specified in the
Uniform  Commercial  Code of the  State of New  York,  shall be  binding  on the
Borrower  and shall not result in any  liability of such Issuing Bank or any L/C
Participant to the Borrower.

                    (g)  Letter  of  Credit  Payments.  If any  draft  shall  be
presented  for payment  under any Letter of Credit,  the  responsibility  of the
applicable  Issuing Bank to the Borrower in connection with such draft shall, in
addition  to any payment  obligation  expressly  provided  for in such Letter of
Credit,  be limited to  determining  that the documents  (including  each draft)
delivered under such Letter of Credit in connection with such presentment are in
conformity with such Letter of Credit.

                    (h)  Application.  To the extent that any  provision  of any
Request  for  Issuance  of Letter of Credit or any Letter of Credit  Application
related  to any Letter of Credit is  inconsistent  with the  provisions  of this
Section 2.14, the provisions of this Section 2.14 shall apply.

                         (i) Change in Law.  If any change  after the  Agreement
Date in  Applicable  Law,  any change in the  interpretation  or  administration
thereof,  or any change after the Agreement Date in compliance  with  Applicable
Law by any  Issuing  Bank or any  other  Lender as a result  of any  request  or
directive  of any  governmental  authority,  central bank or  comparable  agency
(whether  or not  having  the  force of law)  shall (i)  impose,  modify or deem
applicable any reserve (including,  without limitation, any imposed by the Board
of Governors of the Federal Reserve System),  special deposit, capital adequacy,
assessment or other  requirements or conditions against letters of credit issued
by any Issuing  Bank or against  participations  by any L/C  Participant  in the
Letters of Credit or (ii) impose on any Issuing Bank or any L/C  Participant any
other condition regarding any Letter of Credit or any participation therein, and
the  result of any of the  foregoing  in the  reasonable  determination  of such
Issuing  Bank or such L/C  Participant,  as the case may be, is to increase  the
cost to such Issuing Bank or such L/C  Participant of issuing or maintaining any
Letter of Credit or purchasing or maintaining any participation  therein, as the
case may be, by an amount (which amount shall be reasonably  determined)  deemed
by such  Issuing  Bank or such L/C  Participant  to be  material,  then,  on the
earlier of (x) five (5) days following the date of demand (which demand shall be
made not later than three (3) months following such change) by such Issuing Bank
or such L/C  Participant  or (y) the Initial  Maturity  Date, the Borrower shall
immediately  pay to such Issuing Bank or such L/C  Participant,  as the case may
be,  such  additional  amount  or  amounts  as such  Issuing  Bank  or such  L/C
Participant,  as the  case  may  be,  determines  will  compensate  it for  such
increased  costs.  Within sixty (60) days of such written demand by such Issuing
Bank or such L/C Participant, the Borrower may, in its discretion, provide a

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replacement  lender or lenders for such  Issuing  Bank or such L/C  Participant,
which  replacement  lender or lenders  will be subject  to the  approval  of the
Administrative  Agent,  which,  so long as no Default or Event of Default  shall
then exist, shall not be unreasonably  withheld,  and the Administrative  Agent,
such Lender and the Borrower  shall take all  necessary  actions to transfer the
rights,  duties and  obligations of such Issuing Bank or such L/C Participant to
such  replacement  lender or  lenders  within  such  sixty  (60) day  period.  A
certificate of such Lender or such Issuing Bank setting forth the amount, and in
reasonable  detail,  the basis for such Issuing  Bank or such L/C  Participant's
determination  of such  amount,  to be paid to  such  Issuing  Bank or such  L/C
Participant  by the  Borrower  as a  result  of any  event  referred  to in this
paragraph shall, absent manifest error, be conclusive. Such certificate shall be
delivered to the Borrower with each written demand for payment referenced above.
Each Issuing  Bank and each L/C  Participant  further  agree that they shall use
their best efforts to give the Borrower  thirty (30) days prior  notice,  and in
any event shall give prompt  notice,  of any event referred to in this paragraph
which may have the effect of materially increasing the cost to such Issuing Bank
or such L/C  Participant  of  issuing  or  maintaining  any  Letter of Credit or
purchasing or maintaining any participation therein.

                    (j) Indemnity. The Borrower will indemnify and hold harmless
the  Indemnified  Parties  from and  against  any and all  claims,  liabilities,
obligations,  losses,  damages,  penalties,  actions,  judgments,  suits, costs,
expenses or disbursements of any kind or nature whatsoever  (including,  without
limitation,  reasonable attorneys' fees) which may be imposed on, incurred by or
asserted against any such Indemnified  Parties in any way relating to or arising
out of the issuance of a Letter of Credit, except that the Borrower shall not be
liable  to any of the  Indemnified  Parties  for any  portion  of  such  claims,
liabilities, obligations, losses, damages, penalties, actions, judgments, suits,
costs, expenses or disbursements  resulting from the gross negligence or willful
misconduct of the Indemnified  Parties as determined by a final,  non-appealable
judicial  order.  This  Section  2.14(j)  shall  survive   termination  of  this
Agreement.

          Section 2.15 Swing Loans.

                    (a) Swing Loan Advances.

                         (i)  Notices;   Disbursement.   Whenever  the  Borrower
desires an  Advance  of the Swing  Loans  hereunder,  it shall give  irrevocable
notice to the Swing Loan Lender,  with a copy to the  Administrative  Agent, not
later than 10:00 a.m.  (New York time) on the date of the  requested  Advance by
telephone,  followed immediately by a confirmation of such request in writing in
the form of Exhibit U hereto (a "Swing Loan Request"). Upon receipt of a copy of
the Swing Loan Request,  the  Administrative  Agent shall  promptly,  and in any
event no later than 1:00 p.m.  (New York time),  notify the Swing Loan Lender of
the amount of the Available Revolving Commitment, the aggregate principal amount
of the  Revolving  Loans  outstanding,  and  the  aggregate  amount  of the  L/C
Obligations  outstanding.  Subject to  satisfaction  of the conditions set forth
herein,  the Swing Loan Lender shall initiate the transfer of funds representing
such Advance of the Swing Loans to the Borrower by 3:00 p.m.  (New York time) on
the Business Day specified by the Borrower in the applicable Swing Loan Request.

                    (ii) Minimum Amounts.  Each Advance of the Swing Loans shall
be in a minimum principal amount of $100,000 and integral  multiples of $50,000,
in excess thereof.

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               (b)  Repayment  of Swing  Loans.  Each Advance of the Swing Loans
shall be due and  payable on the  earliest of (i) thirty (30) days from the date
of such Advance,  (ii) the date of the next Advance of the Revolving  Loans,  or
(iii) the Initial Maturity Date; provided,  however, the Borrower may prepay any
Swing  Loan  Advance  prior to the date it is due upon  notice to the Swing Loan
Lender and the Administrative Agent not later than 10:00 a.m. (New York time) on
the date of prepayment of such Advance. If such notice is given by the Borrower,
the Borrower shall make such prepayment and the payment amount specified in such
notice shall be due and payable on the date  specified  therein,  together  with
accrued interest to such date on the amount prepaid.  If, and to the extent, any
Swing Loans  shall be  outstanding  on the date of any Advance of the  Revolving
Loans, such Swing Loans shall be repaid from the proceeds of such Advance of the
Revolving Loans prior to any distribution of such proceeds to the Borrower.  The
Swing Loan Lender may, at any time, in its sole  discretion by written notice to
the Borrower and the Administrative  Agent, require repayment of its Swing Loans
by way of a Revolving  Loan, in which case the Borrower  shall be deemed to have
requested a Base Rate Advance of the Revolving Loans in the amount of such Swing
Loans;  provided,  however,  that any such  demand  shall be deemed to have been
given (A) one (1) Business Day prior to the Initial  Maturity  Date,  (B) on the
last day of any thirty (30) day period  following the date of any Advance of the
Swing  Loans,  or if  such  day is not a  Business  Day,  on  the  Business  Day
immediately  preceding the last day of such thirty (30) day period, (C) upon the
occurrence of any Event of Default  described in Section  10.1(f) or (g) hereof,
and (D) upon acceleration of the Obligations,  whether on account of an Event of
Default  described  in  Section  10.1(f)  or (g)  hereof or any  other  Event of
Default,  in accordance with the provisions of Section 10.2 hereof  following an
Event of Default  (each such  Revolving  Loan made on account of any such deemed
request  therefor  as  provided  herein  being  hereinafter  referred  to  as  a
"Mandatory Borrowing").  Each Lender hereby irrevocably agrees to make Revolving
Loans based on its Revolving  Commitment Ratio promptly upon any such request or
deemed request on account of each  Mandatory  Borrowing in the amount and in the
manner  specified  in  the  preceding  sentence  and  on  the  same  such  date,
notwithstanding  (I) the amount of Mandatory  Borrowing  may not comply with the
minimum amount for advances of Revolving  Loans  otherwise  required  hereunder,
(II) whether any  conditions  specified in Article 4 are then  satisfied,  (III)
whether a Default or an Event of Default then exists,  (IV) failure for any such
request or deemed  request for Revolving  Loans to be made by the time otherwise
required in Section 2.2, (V) the date of such Mandatory  Borrowing,  or (VI) any
reduction in the Revolving Commitment or termination of the Revolving Commitment
relating   thereto   immediately   prior   to  such   Mandatory   Borrowing   or
contemporaneously therewith; provided, however, that no Lender shall be required
to make such  Revolving  Loans if, at the time that the Swing Loan Lender agreed
to fund any Swing Loan  Request,  the Swing Loan  Lender  had  received  written
notice from the  Borrower or the  Administrative  Agent of the  occurrence  of a
Default  or Event of Default or to the extent  such  Mandatory  Borrowing  would
cause a Lender  to  exceed  its  Revolving  Commitment.  In the  event  that any
Mandatory Borrowing cannot for any reason be made on the date otherwise required
above  (including,  without  limitation,  as a result of the commencement of any
Insolvency  Proceeding  with  respect  to  the  Borrower  or any  other  obligor
hereunder or under any other Loan Document), then each Lender hereby agrees that
it  shall  forthwith  purchase  (as of the date the  Mandatory  Borrowing  would
otherwise  have  occurred,  but  adjusted  for any  payments  received  from the
Borrower on or after such date and prior to such  purchase)  from the Swing Loan
Lender such  participations in the outstanding Swing Loans as shall be necessary
to cause each such  Lender to share in such Swing Loans  ratably  based upon its
respective  Revolving  Commitment Ratio (determined  before giving effect to any
termination of the Commitments pursuant to Section 10.2), provided that (x) all

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interest  payable on the Swing  Loans shall be for the account of the Swing Loan
Lender until the date as of which the respective participation is purchased, and
(y) at the time any  purchase of  participations  pursuant  to this  sentence is
actually made, the purchasing Lender shall be required to pay (to the extent not
paid by the Borrower) to the Swing Loan Lender interest on the principal  amount
of  participation  purchased  for each day from and including the day upon which
the Mandatory  Borrowing would otherwise have occurred but excluding the date of
payment  for such  participation,  at the rate equal to, if paid  within two (2)
Business  Days of the date of the Mandatory  Borrowing,  the Federal Funds Rate,
and thereafter at a rate equal to the Base Rate.  Notwithstanding the foregoing,
no Lender shall be required to purchase  participations in the outstanding Swing
Loans  from the Swing Loan  Lender  if, at the time that the Swing  Loan  Lender
agreed to fund any Swing  Loan  Request,  the Swing  Loan  Lender  had  received
written notice from the Borrower or the  Administrative  Agent of the occurrence
of a Default  or Event of  Default  or if,  and to the  extent,  the sum of such
Lender's Revolving Loans outstanding plus the amount of such participation would
exceed the Revolving Commitment of such Lender.

               (c) Interest on Swing Loans. Swing Loans shall bear interest at a
per annum rate agreed to by the  Borrower and the Swing Loan Lender as set forth
in the Swing Loan Note; provided,  however,  that (i) from and after any failure
to make any  payment of  principal  or  interest  in respect of any of the Loans
hereunder when due (after giving effect to any applicable grace period), whether
at scheduled or accelerated  maturity or on account of any mandatory  prepayment
or (ii) while any Swing Loans in which the Lenders have acquired  participations
pursuant to Section  2.15(b)  remain  outstanding,  the principal of and, to the
extent permitted by law,  interest on, Swing Loans shall bear interest,  payable
on demand, at the Default Rate.  Interest on each Swing Loan shall be payable in
arrears  on the date  payment  of such  Swing  Loan is due  pursuant  to Section
2.15(b).

               (d) Reporting. Unless the Swing Loan Lender is the Administrative
Agent,  the Swing Loan Lender  shall  provide to the  Administrative  Agent,  on
Friday of each week and on each date the Administrative Agent notifies the Swing
Loan  Lender  that  the   Borrower  has  made  a  Request  for  Advance  or  the
Administrative  Agent  otherwise  requests  the  same,  an  accounting  for  the
outstanding  Swing Loans in form reasonably  satisfactory to the  Administrative
Agent.

               (e) Termination of Swing Loans; Designation of Swing Loan Lender.
Unless a Default or an Event of Default then  exists,  the Swing Loan Lender may
resign as Swing Loan Lender by giving the Borrower and the Administrative  Agent
at least seven (7) days' prior written  notice.  The Borrower must give ten (10)
days'  prior  written  notice  to the  Administrative  Agent  of any  change  in
designation  of the Swing Loan  Lender.  The  replaced  Swing Loan Lender  shall
continue to be a "Swing  Loan  Lender" for  purposes of  repayment  of any Swing
Loans made prior to such replacement and outstanding after such replacement.

          Section 2.16 Incremental Facility Loans.

               (a) Subject to the terms and  conditions of this  Agreement,  the
Borrower may request an  Incremental  Facility  Commitment  on any Business Day;
provided,  however,  that the Borrower may not request an  Incremental  Facility
Commitment or an Incremental  Facility Loan during the  continuance of a Default
or Event of  Default,  including,  without  limitation,  any Default or Event of
Default that would result after giving effect to any Incremental  Facility Loan;
and provided further, that the Borrower may request up to five (5) Incremental

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Facility  Commitments  (each  of which  commitments  may be from  more  than one
Lender) which may be no less than  $50,000,000 and no more than  $250,000,000 in
the aggregate.  The Incremental  Facility Maturity Date applicable to any of the
Incremental  Facility Loans shall be no earlier than the date which is three (3)
calendar months after the Final Maturity Date, unless such Incremental  Facility
Commitments are used to increase the amount of any of the Commitments hereunder.
In requesting Incremental Facility Commitments, the Borrower shall offer each of
the  Lenders  an  opportunity  to provide an  Incremental  Facility  Commitment;
provided  that none of the Lenders  shall be  required  to issue an  Incremental
Facility  Commitment  and the  decision  of any  Lender to issue or not issue an
Incremental  Facility  Commitment to the Borrower shall be at such Lender's sole
discretion.  Persons  not  then  Lenders  may  be  included  as  Lenders  having
Incremental  Facility   Commitments  with  the  written  approval,   not  to  be
unreasonably  withheld, of the Borrower and the Lead Arrangers.  The Incremental
Facility  Commitments  (i) may be in the form of a  revolving  or a term  credit
facility and may be structured as an institutional  tranche, (ii) may be used to
increase  the  amount of any of the  Commitments  hereunder,  provided  that the
amount of such Incremental  Facility Commitments is added on a pro rata basis to
the remaining scheduled amortization in the case of the Term Loans or commitment
reductions  in the case of the  Revolving  Loan  Commitment,  (iii) must not (A)
have,  (x) in the case of  Incremental  Facility Loans which are term loans (but
not Tranche A Loans),  scheduled amortization providing for principal repayments
earlier  than,  or in amount on a percentage  basis larger than,  those dates or
amounts set forth in the  repayment  schedule  for the Tranche B Loans set forth
herein,  or (y) in the case of  Incremental  Facility  Loans which are revolving
loans,  scheduled amortization providing for commitment reductions earlier than,
or in an amount on a percentage  basis  larger than,  those dates or amounts set
forth in the reduction  schedule for the Revolving  Commitment set forth herein,
or (B) be secured by more or different collateral than the Loans hereunder,  and
(iv) must be  governed by this  Agreement  and the other Loan  Documents  and be
subject to terms and  conditions not more  restrictive  than those set forth for
the Loans herein and therein.

               (b)  Prior  to  the  effectiveness  of any  Incremental  Facility
Commitment,  the Borrower shall (i) deliver to the Administrative  Agent and the
Lenders a written notice (each a "Notice of Incremental  Facility  Commitment"),
in form and  substance  reasonably  satisfactory  to the  Administrative  Agent,
setting forth terms and provisions  with respect to interest rates and scheduled
amortization  with respect to the proposed  Incremental  Facility  Loan and (ii)
provide revised  Projections to the Credit  Parties,  which shall be in form and
substance  reasonably  satisfactory  to  the  Lead  Arrangers  and  which  shall
demonstrate  the Borrower's  ability to timely repay such  Incremental  Facility
Commitment and any Incremental  Facility Loans thereunder and to comply with the
terms and conditions of this Agreement and the other Loan Documents.

               (c) No Incremental  Facility Commitment shall by itself result in
any  reduction of the  Revolving  Commitment,  the Tranche A  Commitment  or the
Tranche B  Commitment  or of the  Commitment  Ratios of any Lender  issuing such
Incremental Facility Commitment.

               (d)  Advances of the  Incremental  Facility  Loans (i) shall bear
interest at the Base Rate or the Eurodollar Rate or such other rate agreed to by
the Lenders making such Advances;  (ii) subject to Section 2.16(a) hereof, shall
be repaid as agreed to by the  Borrower  and the Lenders  making such  Advances;
(iii)  shall  for all  purposes  be  Obligations  hereunder  and  under the Loan
Documents;  (iv) shall be represented by promissory  notes which set forth terms
and provisions  with respect to interest rates and scheduled  amortization  with
respect to such Incremental Facility Loans and are in form and substance

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acceptable to the  Administrative  Agent and the Borrower (each, an "Incremental
Facility  Note");  and (v) shall rank pari passu with the Loans for  purposes of
Sections  2.11 and 10.2 hereof and with  respect to the  Collateral  (unless the
applicable  Incremental Facility Lender shall otherwise agree in writing to have
its Incremental Facility Loans be junior to the Loans).

               (e) Incremental Facility Loans shall be requested by the Borrower
pursuant to a request (which shall be substantially in the form of a Request for
Advance)  delivered  in the same manner as a Request for  Advance,  but shall be
funded  pro rata  only by those  Lenders  that  hold  the  Incremental  Facility
Commitments.

                              ARTICLE 3 - Guarantee

          Section 3.1 Guarantee. Holdco hereby unconditionally guarantees to the
Credit  Parties and their  respective  permitted  successors and assigns and the
subsequent  holders  of the  Obligations  (including,  without  limitation,  any
interest on the Loans  accruing  after the filing of a petition  initiating  any
Insolvency  Proceeding  with respect to Holdco,  the Borrower or any  Designated
Subsidiary,  whether or not such interest accrues or is recoverable  against the
Borrower after the filing of such petition for purposes of the  Bankruptcy  Code
or is an allowed  claim in such  proceeding),  irrespective  of the validity and
enforceability  of this Agreement  (other than this Article 3), the Notes or the
other Loan  Documents  or the  Obligations  of the  Borrower or any of the other
Guarantors  hereunder or thereunder,  the value or sufficiency of any Collateral
or any other  circumstance  that  might  otherwise  affect  the  liability  of a
guarantor,  that: (i) the principal of and interest on the Loans,  the Notes and
all other  Obligations  of the Borrower and the other  Guarantors  to the Credit
Parties under this  Agreement,  the Notes and the other Loan Documents  shall be
promptly paid in full when due, whether at stated  maturity,  by acceleration or
otherwise,  in accordance with the terms hereof and thereof; and (ii) in case of
any  extension  of time of  payment or renewal of any Notes or any of such other
Obligations, the same shall be promptly paid in full when due in accordance with
the  terms  of  the  extension  or  renewal,  whether  at  stated  maturity,  by
acceleration or otherwise.  The foregoing  guaranty is a guaranty of payment and
not of  collection.  Failing  payment when due of any amount so  guaranteed  for
whatever reason, Holdco will be obligated to pay the same immediately.

          Section 3.2 Waivers and Releases.  Holdco hereby waives notice of, and
consents to, any extension of time of payment, renewals, releases of collateral,
delays in  obtaining  or  realizing  upon or  failures  to obtain,  perfect,  or
maintain perfection of, or realize upon collateral or other indulgence from time
to time granted by any of the Credit Parties in respect of this  Agreement,  the
Notes or any other Loan Document.  Until the Obligations  have been paid in full
in cash or otherwise satisfied to the satisfaction of the Credit Parties, Holdco
hereby  releases  the  Borrower  from all,  and  agrees not to assert or enforce
(whether by or in a legal or equitable  proceeding or otherwise)  any,  "claims"
(as defined in 11 U.S.C.  ss. 101(4)),  whether arising under  Applicable Law or
otherwise,  to which Holdco is or would be entitled by virtue of its obligations
hereunder,  any  payment  made  pursuant  hereto or the  exercise  by the Credit
Parties of their  rights  with  respect to any  Collateral,  including  any such
claims to which Holdco may be entitled as a result of any right of  subrogation,
exoneration  or  reimbursement.  To the  extent  that  the  Borrower  may not be
released  by  Holdco  under  this  Article  3,  Holdco  agrees  that,  until the
Obligations  have  been  paid in full in  cash  or  otherwise  satisfied  to the
satisfaction  of the Credit  Parties,  it shall not be  entitled to any right of
subrogation,  exoneration,  reimbursement  or  contribution  in  respect  of any
Obligations guaranteed hereby. With respect to this Agreement and the Notes,

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Holdco hereby waives presentment, protest, demand of payment, notice of dishonor
and all other notices and demands  whatsoever.  Holdco  further  agrees that, as
between Holdco, on the one hand, and the Credit Parties,  on the other hand, (i)
the maturity of the Obligations guaranteed hereby may be accelerated as provided
in Section 10.2 hereof for the purposes of this Guarantee,  notwithstanding  any
stay, injunction or other prohibition preventing such acceleration in respect of
the Obligations  guaranteed  hereby, and (ii) in the event of any declaration of
acceleration  of such  Obligations  as provided  in Section  10.2  hereof,  such
Obligations  (whether or not otherwise due and payable) shall  forthwith  become
due and payable by Holdco for purposes of this  guarantee.  The  Obligations  of
Holdco  under this  Article 3 shall be  automatically  reinstated  if and to the
extent  that for any  reason  any  payment  by or on behalf of the  Borrower  is
rescinded or must otherwise be restored by any holder of any of the  Obligations
guaranteed  hereunder,  whether as a result of any  Insolvency  Proceeding  with
respect to Holdco, the Borrower or any Designated  Subsidiary or otherwise , and
Holdco  agrees  that it will  indemnify  the Credit  Parties on demand for their
out-of-pocket costs and expenses (including, without limitation, reasonable fees
and expenses of counsel)  incurred by the Credit Parties in connection with such
rescission or restoration.

               Section 3.3 Miscellaneous.

                    (a) Upon the bankruptcy or winding up or other  distribution
of Assets of the  Borrower  or any  Designated  Subsidiary  or of any  surety or
guarantor for any of Obligations of the Borrower to the Credit  Parties,  or any
of them, the rights of the Credit  Parties  against Holdco shall not be affected
or impaired by the omission of any Credit Party to prove its claim,  or to prove
its full claim,  and the  Collateral  Agent may prove such claims as it sees fit
and may refrain  from  proving any claim and in its  discretion  may value as it
sees fit or refrain  from  valuing  any  security  held by it without in any way
releasing,  reducing or otherwise affecting the liability to any Credit Party of
Holdco.

                    (b)  Holdco  absolutely,   unconditionally  and  irrevocably
waives  any and all  right to  assert  any  defense,  set-off,  counterclaim  or
cross-claim  of any nature  whatsoever  with  respect  to this  Article 3 or the
obligations of Holdco  hereunder or the obligations of any other Person or party
(including,  without limitation, the Borrower) relating to this Article 3 or the
obligations of any other guarantor with respect to the  Obligations  (other than
payment in full) in any  action or  proceeding  brought  by any Credit  Party to
collect the Obligations or any portion thereof, or to enforce the obligations of
Holdco under this Article 3.

                    (c) The  Credit  Parties,  or any of them,  may from time to
time,  without  exonerating or releasing Holdco in any way under this Guarantee,
(i) release, discharge,  abandon or otherwise deal with or fail to deal with any
guarantor or surety of the Guaranteed  Obligations or any security or securities
therefor or any part thereof now or hereafter held by the  Administrative  Agent
or (ii)  amend,  modify,  extend,  accelerate  or waive in any manner any of the
provisions, terms, or conditions of the Loan Documents, all as they may consider
expedient or appropriate in their sole discretion or (iii) act or fail to act in
any manner  referred to in this Article 3 without  regard to whether such action
or inaction may deprive Holdco of its right to subrogation  against the Borrower
to recover  full  indemnity  for any payments  made  pursuant to this Article 3.
Without  limiting the  generality of this Article 3, it is  understood  that the
Credit Parties may, without  exonerating or releasing Holdco, give up, or modify
or  abstain  from  perfecting  or  taking  advantage  of any  security  for  the
Obligations and accept or make any compositions or arrangements, and realize

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upon any security for the Obligations  when, and in such manner,  as such Person
may deem expedient, all without notice to Holdco.

                    (d) If a claim is ever made upon the Credit  Parties for the
repayment  or  recovery  of any amount or  amounts  received  by such  Person in
payment of any of the  Obligations  and such  Person  repays all or part of such
amount  by  reason  of (i)  any  judgment,  decree  or  order  of any  court  or
administrative body having jurisdiction over such Person or any of its property,
or (ii) any  settlement or compromise of any such claim  effected by such Person
with any such claimant,  including the Borrower, then in such event Holdco shall
be and remain  obligated  to such Person  hereunder  for the amount so repaid or
recovered  to the same  extent  as if such  amount  had  never  originally  been
received by such Person.

                    (e) Holdco expressly  represents and  acknowledges  that any
financial accommodations by the Credit Parties, or any of them, to the Borrower,
including  without  limitation  the  extension  of the  Loans are and will be of
direct interest, benefit and advantage to Holdco.

                        ARTICLE 4 - Conditions Precedent


          Section 4.1 Conditions  Precedent to Initial  Advance of the Loans and
to the Issuance of the Initial  Letter of Credit.  The obligation of the Lenders
to undertake their respective Commitments and to make the initial Advance of the
Loans, and of the Issuing Bank to issue the initial Letter of Credit, is subject
to the prior fulfillment of each of the following conditions:

                    (a) The Administrative Agent shall have received each of the
following  (with copies for each of the Lenders which have requested  same),  in
form and substance  satisfactory  to the  Arrangers and each of the Lenders,  as
applicable:

                         (i) this duly executed Agreement;

                         (ii) the duly executed Notes;

                         (iii) the duly executed  Borrower's  Pledge  Agreement,
together with appropriate  original stock  certificates and undated stock powers
with respect thereto executed in blank and appropriate UCC-1 financing statement
forms;

                         (iv) the duly  executed  Security  Agreement,  together
with evidence of the filing of appropriate UCC-1 financing statement forms;

                         (v)  the  loan   certificate   of  the   Borrower,   in
substantially  the form attached hereto as Exhibit V, including a certificate of
incumbency with respect to each Authorized  Signatory of the Borrower,  together
with the following  items: (A) a copy of the certificate of incorporation of the
Borrower,  certified to be complete and correct by the Secretary of State of the
State of  Delaware,  and a  complete  and  correct  copy of the  by-laws  of the
Borrower;  (B) a  certificate  of good  standing for the Borrower  issued by the
Secretary of State of Delaware; and (C) a true, complete and correct copy of the
resolutions of the board of directors of the Borrower,  authorizing the Borrower
to execute,  deliver and perform this  Agreement and the other Loan Documents to
which it is a party;

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                         (vi) the duly executed Subsidiary Guaranty;

                         (vii) the duly executed  Subsidiary Security Agreement,
together with appropriate UCC-l financing statement forms;

                         (viii) the duly executed  Subsidiary  Pledge Agreement,
together with appropriate  original stock  certificates and undated stock powers
with respect thereto executed in blank and appropriate UCC-1 financing statement
forms;

                         (ix)  a  loan  certificate  from  each  Guarantor,   in
substantially  the form attached hereto as Exhibit W, including a certificate of
incumbency with respect to each Authorized Signatory of such Guarantor, together
with  the  following  items:  (A) a  copy  of the  certificate  or  articles  of
incorporation, certificate of limited partnership or certificate of organization
of such  Guarantor,  certified  to be complete  and correct by the  Secretary of
State of the state of such Guarantor's  organization;  (B) a certificate of good
standing for such  Guarantor  issued by the  Secretary of State or similar state
official in the state in which such  Guarantor is organized;  (C) a complete and
correct copy of the by-laws,  partnership agreement or limited liability company
or operating agreement of such Guarantor; and (D) a complete and correct copy of
the resolutions of the board of directors,  or other appropriate entity, of such
Guarantor  authorizing  such Guarantor to execute,  deliver and perform the Loan
Documents to which it is a party;

                         (x) the duly executed Holdco Pledge Agreement, together
with  appropriate  original  stock  certificates  and undated  stock powers with
respect thereto executed in blank;

                         (xi) the duly executed  Intellectual  Property Security
Agreements, together with appropriate filing coversheets;

                         (xii)  copies  of  insurance  binders  or  certificates
covering  the  Assets  of the  Borrower  and the  Designated  Subsidiaries,  and
otherwise meeting the requirements of Section 6.5 hereof;

                         (xiii) a legal opinion, dated as of the Agreement Date,
of Dow, Lohnes & Albertson, PLLC, as special counsel to Holdco, the Borrower and
its  Subsidiaries  in  connection  with the  transactions  contemplated  by this
Agreement and the other Loan Documents, addressed to the Arrangers and the other
Credit  Parties,  in form  and  substance  reasonably  satisfactory  to the Lead
Arrangers and their counsel;

                         (xiv)  a duly  executed  Request  for  Advance  for the
initial Advance of the Loans;

                         (xv) the duly executed Use of Proceeds Letter;

                         (xvi)  the  duly  executed   Certificate  of  Financial
Condition for the Borrower and the  Designated  Subsidiaries  on a  consolidated
basis,  given by a  Financial  Officer of the  Borrower  which  shall  include a
certification  that, since December 31, 1999, no event has occurred which would,
with the passage of time,  be  reasonably  likely to have a  Materially  Adverse
Effect;

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                         (xvii)  copies  of  all  consents  of any  Person,  and
filings with any Governmental  Authority made or obtained in connection with the
transactions contemplated by this Agreement and the other Loan Documents;

                         (xviii) a duly executed Lien termination  agreement and
recordable Lien releases with respect to any Liens which are not Permitted Liens
hereunder upon the Assets of the Borrower and the Designated  Subsidiaries,  and
with respect to any other Indebtedness which is not Permitted Debt hereunder;

                         (xix)  the  duly  executed   Assignment  of  SBC  Lease
Documents; and

                         (xx)  all  such   other   documents   as   either   the
Administrative  Agent or any  Lender may  reasonably  request,  certified  by an
appropriate governmental official or an Authorized Signatory if so requested.

                    (b)  The  Lead  Arrangers   shall  have  received   evidence
satisfactory to them that all Necessary Authorizations to the extent relating to
Material  Towers,  and all  necessary  consents to the  execution,  delivery and
performance  by the Borrower of this  Agreement and the other Loan  Documents to
which it is a party and by Holdco and the  Designated  Subsidiaries  of the Loan
Documents to which they are  parties,  have been  obtained or made,  are in full
force and effect and are not  subject to any pending or  threatened  reversal or
cancellation,  and the Administrative Agent shall have received a certificate of
an Authorized Signatory of the Borrower so stating.

                    (c) The Credit Parties shall receive payment of (i) all fees
and  expenses  due  and  payable  on  the  Agreement  Date  in  respect  of  the
transactions  contemplated  hereby and (ii) all interest and fees payable  under
the Prior Credit Agreement accrued to and including the Agreement Date.

                    (d) The Lead  Arrangers  shall have received the  Borrower's
financial  projections,  after  giving  effect  to the SBC  Transaction  and the
transactions  contemplated  by this  Agreement and the other Loan Documents on a
fiscal year basis through the Final Maturity Date, and on a fiscal quarter basis
through December 31, 2001 (together with any updates and revisions thereof,  the
"Projections"),  and in the  event of any  change in  circumstances  that in the
reasonable   judgment  of  the  Lead  Arrangers  would  materially   affect  the
Projections,  any revisions of such Projections requested by the Lead Arrangers,
in form and substance reasonably satisfactory to the Lead Arrangers.

                    (e) The Arrangers  shall have  received a  certificate  of a
Financial Officer of the Borrower,  in substantially the form of the Performance
Certificate required to be delivered under Section 7.3 hereof, demonstrating, on
a pro  forma  basis as of the  Agreement  Date and  after  giving  effect to the
initial Advance of the Loans hereunder,  that the Borrower is in compliance with
each of the Financial Covenants.

                    (f) The Arrangers  shall not be aware of any  information or
other matters  affecting the assets or rights to be acquired in connection  with
the SBC Transaction,  or the other  transactions  contemplated by this Agreement
and the other Loan  Documents,  which  information is inconsistent in a material
and adverse manner with any information disclosed in the SBC Lease Documents and

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could reasonably be expected to have a Materially Adverse Effect.

                    (g) All legal  matters  incident to this  Agreement  and the
consummation  of  the  transactions  contemplated  hereby  shall  be  reasonably
satisfactory to the Lead Arrangers and their counsel.

          Section 4.2  Conditions  Precedent to Each Advance.  The obligation of
the Lenders to make each Advance  (including the initial  Advance  hereunder and
including any Advance of the Swing Loans) is subject to the  fulfillment of each
of the following conditions  immediately prior to or contemporaneously with such
Advance:

                    (a) All of the  representations  and  warranties  made by or
with respect to Holdco, the Borrower and the Designated Subsidiaries,  or any of
them,  under this  Agreement and the other Loan  Documents,  which,  pursuant to
Section 5.2  hereof,  are made at and as of the time of such  Advance,  shall be
true and correct at such time in all  material  respects,  both before and after
giving effect to the application of the proceeds of such Advance;

                    (b) There shall not exist, on the date of the making of such
Advance and after giving  effect to the proceeds of such  Advance,  a Default or
Event of Default hereunder,  and the  Administrative  Agent, or in the case of a
Swing Loan, the Swing Loan Lender,  shall have received a Request for Advance or
Swing Loan Request,  as  applicable,  signed by an  Authorized  Signatory of the
Borrower so  certifying,  which  Request for Advance or Swing Loan  Request,  as
applicable,  shall also (i) certify the Borrower's compliance with the Financial
Covenants,  (ii) provide  calculations  demonstrating the Borrower's  compliance
with Section 9.1 hereof before and after giving effect to such Advance and (iii)
certify that each of the SBC Lease  Documents is in full force and effect or, if
any of SBC Lease  Documents  has been  terminated,  that Holdco has received all
amounts  required to be paid to Holdco  pursuant to Section 14.1 (or any similar
provision)  of the SBC  Agreement to Sublease and such amounts have been applied
to prepay the Loans as and to the extent  required  pursuant  to Section  2.7(d)
hereof.

          Section 4.3 Conditions Precedent to Issuance of Each Letter of Credit.
The  obligation  of any Issuing Bank to issue any Letter of Credit  hereunder is
subject to the prior fulfillment of each of the following conditions:

                    (a) All of the  representations  and  warranties  made by or
with respect to Holdco, the Borrower and the Designated Subsidiaries,  or any of
them,  under this  Agreement and the other Loan  Documents,  which,  pursuant to
Section  5.2  hereof,  are  made at and as of the time of the  issuance  of such
Letter  of  Credit,  shall  be true and  correct  at such  time in all  material
respects,  both before and after giving effect to the issuance of such Letter of
Credit; and

                    (b) There  shall not exist,  on the date of the  issuance of
such Letter of Credit and after  giving  effect  thereto,  a Default or Event of
Default hereunder,  and the  Administrative  Agent shall have received a Request
for Issuance of Letter of Credit so certifying.

          Section 4.4  Conditions  Subsequent to Agreement  Date. As a condition
subsequent to the funding of the Tranche B Loans,  and the making of the initial
Advance  of the  Tranche  A Loans  and the  Revolving  Loans  hereunder,  on the
Agreement  Date,  the  Borrower  shall  perform  or  cause to be  performed  the
following  (the  failure by the  Borrower to so perform or cause to be performed
constituting an Event of Default hereunder):

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                    (a) On or before the date  thirty  (30) days  following  the
Agreement  Date, the Borrower shall deliver to the Collateral  Agent a corrected
stock  certificate  for  SpectraSite  Communications,  Ltd.  and  prior  to such
delivery SpectraSite Communications, Ltd. shall have no material assets; and

                    (b) On or before  the date one  hundred  twenty  (120)  days
following  the  Agreement  Date,  (i) the Borrower  shall have  delivered to the
Administrative  Agent evidence  reasonably  satisfactory  to the  Administrative
Agent that the Borrower has used its commercially reasonable efforts to transfer
to a Tower Subsidiary all Tower Sites that are not held by a Tower Subsidiary as
of the Agreement Date,  provided that such efforts shall not require the payment
of any material  incremental  amounts, and (ii) the Borrower shall have provided
to  the  Administrative  Agent  a  report,  in  form  and  substance  reasonably
satisfactory  to  Administrative  Agent,  summarizing the location of each Tower
Site and the holder  thereof and shall have  delivered to the  Collateral  Agent
such  financing  statements as shall be reasonably  requested by the  Collateral
Agent to perfect its security  interest in the Collateral  located at each Tower
Site.

                   ARTICLE 5 - Representations and Warranties


          Section 5.1  Representations  and  Warranties.  Each of Holdco and the
Borrower,  for  itself  and on  behalf of each of the  Designated  Subsidiaries,
hereby  agrees,  represents  and warrants in favor of each of the Credit Parties
that:

                    (a) Organization;  Ownership; Power; Qualification.  Each of
Holdco, the Borrower and each of the Designated Subsidiaries is a corporation or
other legal entity duly organized,  validly  existing and in good standing under
the laws of the state of its incorporation or organization, has the corporate or
other  organizational  power  and  authority  to own or lease  and  operate  its
properties  and to carry on its business as now being and hereafter  proposed to
be  conducted.  Each  of  Holdco,  the  Borrower  and  each  of  the  Designated
Subsidiaries is duly  qualified,  in good standing and authorized to do business
in each  jurisdiction  in which the character of its properties or the nature of
its businesses requires such qualification or authorization except where failure
to be so  qualified,  in good  standing or  authorized  could not  reasonably be
expected to have, individually or in the aggregate, a Materially Adverse Effect.

                    (b)  Authorization;  Enforceability.  The  Borrower  has the
corporate power and has taken all necessary action,  corporate or otherwise,  to
authorize it to borrow hereunder, to execute, deliver and perform this Agreement
and each of the other Loan  Documents to which it is a party in accordance  with
their respective terms, and to consummate the transactions  contemplated  hereby
and thereby.  Holdco has the corporate power and has taken all necessary action,
corporate or  otherwise,  to  authorize it to execute,  deliver and perform this
Agreement  and  each of the  other  Loan  Documents  to  which  it is a party in
accordance  with their  respective  terms,  and to consummate  the  transactions
contemplated  hereby and thereby.  Each of the Designated  Subsidiaries  has the
corporate  or other  organizational  power and has taken all  necessary  action,
corporate or otherwise, to authorize it to execute,  deliver and perform each of
the Loan  Documents to which it is a party in accordance  with their  respective
terms and to consummate the  transactions  contemplated by this Agreement and by
such Loan  Documents.  This  Agreement,  and each of the other Loan Documents to
which any of Holdco,  the Borrower or any of the  Designated  Subsidiaries  is a
party,  has been duly  executed and  delivered  by Holdco,  the Borrower or such
Designated  Subsidiary,  as the case may be, and is a legal,  valid and  binding
obligation of Holdco, the Borrower or such Designated Subsidiary, as applicable,

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enforceable against Holdco, the Borrower or such Designated  Subsidiary,  as the
case may be, in accordance with its terms, except to the extent that enforcement
thereof may be limited by bankruptcy, insolvency,  liquidation,  reorganization,
reconstruction and other similar laws affecting enforcement of creditors' rights
generally and by the application of general equitable principles.

                    (c) Equity  Interests,  Corporate  Organization  and Related
Matters.  Holdco owns all of the issued and outstanding  Equity Interests of the
Borrower,  and as of the Agreement Date, except as set forth on Schedule 5.1(c),
the Borrower owns all of the issued and outstanding  Equity Interests of each of
the Designated  Subsidiaries and has the unrestricted  right to vote such Equity
Interests  owned by it. As of the Agreement Date, the Borrower does not have any
Subsidiaries  other than the  Subsidiaries  listed on Schedule  5.1(c)  attached
hereto,  which  Subsidiaries  are  identified  on such  schedule  as  Restricted
Subsidiaries,   Unrestricted   Subsidiaries,   Foreign  Subsidiaries,   Domestic
SpectraSite Mexico Subsidiaries or Foreign SpectraSite Mexico Subsidiaries.  All
of the  issued  and  outstanding  Equity  Interests  of  the  Borrower  and  the
Designated  Subsidiaries  have been duly  authorized  and validly issued and are
fully paid and  nonassessable,  and are free and clear of all Liens  (except for
Permitted Liens).  None of such Equity Interests has been issued in violation of
the Securities  Act, or the securities,  "Blue Sky" or other  Applicable Laws of
any applicable  jurisdiction.  As of the Agreement Date,  except as set forth on
Schedule 5.1(c), neither the Borrower nor any of the Designated Subsidiaries has
outstanding any stock or securities  convertible into or exchangeable for any of
its  Equity  Interests,  nor are  there  any  preemptive  or  similar  rights to
subscribe  for or to  purchase,  or any  other  rights  to  subscribe  for or to
purchase,  or any options for the purchase of, or any  agreements  providing for
the issuance (contingent or otherwise) of, or any calls, commitments,  or claims
of any  character  relating  to, any of such  Equity  Interests  or any stock or
securities convertible into or exchangeable for any of such Equity Interests. As
of the  Agreement  Date,  except as set forth on  Schedule  5.1(c),  neither the
Borrower nor any of the  Designated  Subsidiaries  is subject to any  obligation
(contingent  or otherwise)  to repurchase or otherwise  acquire or retire any of
its Equity Interests or to register any of its Equity  Interests,  and there are
no  agreements  restricting  the transfer of any Equity  Interests of either the
Borrower or any of the Designated Subsidiaries or restricting the ability of any
Designated Subsidiary from making  distributions,  dividends or other Restricted
Payments to the  Borrower.  Except as set forth on Schedule  5.1(c),  within the
five (5) year period  immediately  preceding  the  Agreement  Date,  neither the
Borrower nor any of the Designated Subsidiaries has changed its name nor has the
Borrower nor any of the Designated  Subsidiaries  transacted  business under any
other name or trade name.

                    (d) Compliance  with Other Loan  Documents and  Contemplated
Transactions.  The execution,  delivery and  performance by each of Holdco,  the
Borrower and each of the Designated  Subsidiaries  of this Agreement and each of
the  other  Loan  Documents  to  which it is a party in  accordance  with  their
respective terms, and the consummation of the transactions  contemplated  hereby
and  thereby,  do not and will  not (i) with  respect  to any  Material  Towers,
require  any  consent  or  approval,  governmental  or  otherwise,  not  already
obtained, (ii) violate in any material respect Applicable Law respecting Holdco,
the Borrower or any Designated Subsidiary (including, without limitation, the

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Communications Act or any rule, regulation or written policy of the FCC, the FAA
or any other grantor of a Necessary  Authorization  with respect to any Material
Towers),  (iii)  conflict  with,  result in a breach of, or constitute a default
under the certificate or articles of  incorporation,  by-laws or other governing
documents of Holdco, the Borrower or of any Designated Subsidiary, or, except as
set forth on Schedule 5.1(h) hereof,  in any material respect under any material
indenture,  agreement, or other instrument, to which Holdco, the Borrower or any
Designated  Subsidiary  is a party or by which  any of them or their  respective
properties  may be  bound,  including,  without  limitation,  the  Holdco  Notes
Indentures,  (iv) subject to the filing of post-consummation name change notices
with the FCC,  conflict with,  result in a breach of, or constitute a default or
violation  of, the terms and  conditions  of any  Necessary  Authorization  with
respect to any  Material  Towers,  or (v) result in or require  the  creation or
imposition  of any  Lien  upon or with  respect  to any  property  now  owned or
hereafter   acquired  by  Holdco,   the  Borrower  or  any  of  the   Designated
Subsidiaries, except for Permitted Liens.

                    (e)  Business.  The  Borrower  and  each  of the  Designated
Subsidiaries  are engaged in the Tower  Operations and in the Other  Operations,
and in business activities related thereto.

                    (f) Necessary Authorizations,  Etc. The Borrower and each of
the Designated Subsidiaries have obtained all Necessary  Authorizations,  except
for such  Necessary  Authorizations  the  failure  to  obtain  which  would  not
reasonably be expected to have,  individually or in the aggregate,  a Materially
Adverse Effect,  and all of such Necessary  Authorizations are in full force and
effect,  and  the  Borrower  and  each  of the  Designated  Subsidiaries  are in
compliance in all material respects with the provisions thereof. Except as would
not  reasonably  be  expected  to  have,  individually  or in the  aggregate,  a
Materially Adverse Effect, (i) no Necessary  Authorization is the subject of any
pending  or,  to the best of the  Borrower's  knowledge,  threatened  attack  or
revocation,  and (ii) the Borrower is not aware of any fact or  condition  which
would  constitute  grounds for any  governmental  or other  licensing  authority
(including,  without  limitation,  the  FCC and the  FAA)  to deny  any  pending
application for any Necessary Authorization, to suspend, revoke, modify or annul
any Necessary  Authorizations or to impose any financial penalty on the Borrower
or any of the Designated Subsidiaries.

                    (g) Compliance  with Law;  Absence of Default.  Except where
such  violation  or the  failure to be in  compliance  would not  reasonably  be
expected to have, individually or in the aggregate, a Materially Adverse Effect,
Holdco,  the  Borrower  and  each  of  the  Designated  Subsidiaries,   and  the
construction, ownership and operation of the Towers and the conduct of the Tower
Operations by the Borrower and the  Designated  Subsidiaries,  are in compliance
with all,  and do not violate  any,  (i)  Applicable  Laws  (including,  without
limitation,  all rules and  regulations  promulgated  by the FCC and/or the FAA)
and/or (ii) provisions of the certificates or articles of incorporation, by-laws
and other governing  documents of Holdco,  the Borrower or any of the Designated
Subsidiaries.  No event has  occurred  or failed  to occur  (including,  without
limitation,  any  matter  which  could  create a  Default  or  Event of  Default
hereunder  by  cross-default)  which  has  not  been  remedied  or  waived,  the
occurrence or non-occurrence of which  constitutes,  or with the passage of time
or giving of notice or both would  constitute,  (x) an Event of Default or (y) a
material default by Holdco,  the Borrower or any of the Designated  Subsidiaries
under any material indenture, agreement or other instrument,  including, without
limitation,  the Holdco Notes Indentures,  or any judgment,  decree or order, to
which Holdco, the Borrower or any of the Designated Subsidiaries is a party or

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by which Holdco,  the Borrower or any of the Designated  Subsidiaries  or any of
their  respective  properties  may be bound or  affected.  None of  Holdco,  the
Borrower  or any of the  Designated  Subsidiaries  is a party to or bound by any
contract or  agreement  continuing  after the  Agreement  Date,  or bound by any
Applicable  Law, that could  reasonably be expected to have,  individually or in
the aggregate, a Materially Adverse Effect.

                    (h)  Title  to  Assets.  The  Borrower  and  the  Designated
Subsidiaries each has good and legal title to, or a valid leasehold interest in,
all of its respective material Assets, and none of such Assets is subject to any
Liens,  except for Permitted Liens. Except for financing  statements  evidencing
Permitted Liens, no financing  statement under the Uniform Commercial Code as in
effect in any jurisdiction and no other filing which names Holdco,  the Borrower
or any of the Designated  Subsidiaries as debtor, or which covers or purports to
cover any of the Assets of the Borrower or any of the  Designated  Subsidiaries,
is currently effective and on file in any state or other jurisdiction,  and none
of Holdco,  the Borrower or any of the  Designated  Subsidiaries  has signed any
such financing  statement or filing or any security  agreement  authorizing  any
secured party thereunder to file any such financing  statement or filing.  As of
the Agreement Date, except as set forth on Schedule 5.1(h),  none of Holdco, the
Borrower  or any of the  Designated  Subsidiaries  is a  party  to any  material
contract,  instrument or agreement  (including,  without limitation,  any of the
Necessary  Authorizations)  restricting  the ability of Holdco,  the Borrower or
such Designated Subsidiary,  as applicable,  to enter into an agreement by which
Holdco, the Borrower or such Designated Subsidiary,  as applicable,  agrees that
it shall not create, assume, incur or permit to exist or be created, directly or
indirectly, any Lien on its Assets.

                    (i)  Litigation.  As of the  Agreement  Date,  except as set
forth on Schedule 5.1(i) attached  hereto,  there is no material  action,  suit,
application,  complaint, petition, revocation,  proceeding or investigation,  at
law or in  equity,  or any  material  order,  decree or  judgment,  in effect or
pending against, or, to the best of the Borrower's knowledge, threatened against
Holdco,  the  Borrower  or any of the  Designated  Subsidiaries  or any of their
respective  properties  and assets  (including,  without  limitation,  any Tower
Assets)  in any court or before any  arbitrator  of any kind or before or by any
governmental body (including,  without  limitation,  the FCC and/or the FAA). No
action, suit, proceeding or investigation,  at law or in equity, or any material
order, decree or judgment,  in effect or pending against, or, to the best of the
Borrower's  knowledge,  threatened  against  Holdco,  the Borrower or any of the
Designated  Subsidiaries  or any  of  their  respective  properties  and  assets
(including,  without  limitation,  any Tower  Assets) in any court or before any
arbitrator of any kind or before or by any governmental body (including, without
limitation, the FCC and/or the FAA) (i) calls into question the validity of this
Agreement or any of the other Loan Documents,  (ii) could reasonably be expected
to have a Materially  Adverse Effect,  or (iii) could  reasonably be expected to
restrict in any  material  manner the  ownership  or  operation  of any Material
Towers.

                    (j) Taxes.  All federal and material state,  local and other
tax returns  (including  information  returns),  or any extensions  thereof,  of
Holdco, the Borrower and each of the Designated  Subsidiaries required by law to
be filed have been duly filed and all  federal  and  material  state,  local and
other taxes and impositions,  including, without limitation,  withholding taxes,
assessments  and other  governmental  charges or levies  required  to be paid by
Holdco,  the  Borrower or any of the  Designated  Subsidiaries  or imposed  upon
Holdco,  the  Borrower  or any of the  Designated  Subsidiaries  or any of their
respective  properties,  income,  profits or assets,  which are due and payable,
have been paid, except any such taxes (i) the payment of which Holdco, the

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Borrower or any of the Designated  Subsidiaries is diligently contesting in good
faith by appropriate  proceedings,  (ii) for which  reserves in conformity  with
GAAP have been provided on the books of Holdco,  the Borrower or the  applicable
Designated  Subsidiary,  and (iii) as to which no Lien,  other than a  Permitted
Lien, has attached and no foreclosure,  distraint,  sale or similar  proceedings
have been commenced. The charges,  accruals and reserves on the books of Holdco,
the Borrower and each of the Designated  Subsidiaries in respect of any taxes or
other governmental charges are in conformity with GAAP.

                    (k)  Financial  Information.  The Borrower has  furnished or
caused to be furnished to the Credit  Parties (i) audited  financial  statements
for Holdco on a consolidated  basis with its Subsidiaries which are complete and
correct in all material  respects and present fairly in all material respects in
accordance  with GAAP the financial  position of Holdco and its  Subsidiaries on
and as at December  31, 1999 and the results of  operations  for the period then
ended and (ii) unaudited financial statements for Holdco on a consolidated basis
with its  Subsidiaries  which are complete and correct in all material  respects
and present fairly in all material  respects in accordance with GAAP (subject to
normal year end adjustments and the absence of footnotes) the financial position
of Holdco and its  Subsidiaries  on and as at September 30, 2000 and the results
of operations for the period then ended (the "Financial Statements").  As of the
Agreement  Date,  none  of  Holdco,  the  Borrower  or  any  of  the  Designated
Subsidiaries has any material liabilities,  contingent or otherwise,  other than
(A) as disclosed in the Financial Statements, (B) as set forth or referred to in
this  Agreement,  (C) those which have been  incurred in the ordinary  course of
business since  September 30, 2000, or (D) those  permitted  pursuant to Section
8.1. The Projections  represent the Borrower's  reasonable estimate of projected
future operations as of the Agreement Date, and as of the Agreement Date, to the
best of the Borrower's  knowledge,  there exist no facts or circumstances  which
the Borrower believes could be reasonably  likely to cause a materially  adverse
change in the Projections.

                    (l) No Adverse  Change.  Since December 31, 1999,  there has
occurred no event which has had or which could  reasonably be expected to have a
Materially Adverse Effect.

                    (m) ERISA.  Each Plan that is an "employee  pension  benefit
plan" within the meaning of ERISA Section 3(32)  maintained,  or contributed to,
by the  Borrower or any of the  Designated  Subsidiaries,  or any of their ERISA
Affiliates,  as of the  Agreement  Date is listed on  Schedule  5.1(m)  attached
hereto.  Each of such Plans is in compliance  in all material  respects with its
terms,  ERISA  and the Code.  None of such  Plans  has a  material  `accumulated
funding  deficiency'  within  the  meaning  of ERISA or the  Code.  Neither  the
Borrower  nor any of the  Designated  Subsidiaries  nor any of their  respective
ERISA Affiliates has incurred any material liability to the PBGC (other than the
payment of premiums  imposed by Title IV of ERISA) in  connection  with any such
Plan.  The  assets of each such Plan  which is  subject to Title IV of ERISA are
sufficient to provide the benefits under such Plan if such Plan were  terminated
on the date hereof.  No  Reportable  Event has occurred with respect to any such
Plan. No party in interest, fiduciary, trustee or administrator of any such Plan
or trust created  thereunder has engaged in a `prohibited  transaction' (as such
term is defined in Section 406 of ERISA or Section 4975 of the Code) which would
subject the Borrower,  the Designated  Subsidiaries  or any of their  respective
ERISA  Affiliates  to a material  tax on  `prohibited  transactions'  imposed by
Section  4975 of the Internal  Revenue  Code.  No party in interest,  fiduciary,
trustee or administrator of any such Plan or trust created thereunder has

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committed a material  breach of its fiduciary duty or knowingly  participated in
any  violation  of ERISA  which  would  subject  the  Borrower,  the  Designated
Subsidiaries or any of their  respective  ERISA Affiliates to a material penalty
under Section 502 of ERISA. As of the Agreement Date, none of the Borrower,  the
Designated  Subsidiaries  or any  of  their  respective  ERISA  Affiliates  is a
participant in or obliged to make any payment to a Multiemployer Plan. As of the
Agreement Date, except as disclosed in any financial  statements under Financial
Accounting  Standard  106 or  required  by  Sections  601  through 609 of ERISA,
neither  the  Borrower  nor any of the  Designated  Subsidiaries  has  made  any
material oral or written commitments to provide  post-retirement  health or life
insurance coverage with respect to any former or current employee.  The Borrower
and the Designated  Subsidiaries and ERISA  Affiliates have properly  classified
individuals  providing  services  to the  Borrower  or  any  of  the  Designated
Subsidiaries or ERISA  Affiliates as employees or  non-employees,  except to the
extent that a misclassification would not result in a Materially Adverse Effect.

                    (n)  Compliance  with  Regulations  U  and  X.  Neither  the
Borrower nor any of the Designated  Subsidiaries  is engaged  principally in, or
has as one of its important activities,  the business of purchasing or carrying,
or extending credit for the purpose of purchasing or carrying,  any margin stock
within  the  meaning of  Regulations  U and X of the Board of  Governors  of the
Federal Reserve System.

                    (o) Investment  Company Act;  Public Utility Holding Company
Act.  None of Holdco,  the  Borrower or any of the  Designated  Subsidiaries  is
required to register under the provisions of the Investment Company Act of 1940,
as amended, and neither the entering into or performance by the Borrower of this
Agreement  nor the issuance of the Notes  violates any  provision of such Act or
requires any consent,  approval or authorization  of, or registration  with, the
Securities and Exchange  Commission or any other  governmental or public body or
authority  pursuant to any provisions of such Act. None of Holdco,  the Borrower
or any of the Designated  Subsidiaries  is a "public  utility  holding  company"
within  the  meaning of the  Public  Utility  Holding  Company  Act of 1935,  as
amended.

                    (p)  Securities  Laws.  Except  as would not  reasonably  be
expected to have, individually or in the aggregate, a Materially Adverse Effect,
Holdco,  the  Borrower,  each of the  Designated  Subsidiaries  and, to the best
knowledge  of  Holdco,  the  Borrower  and  the  Designated  Subsidiaries,   any
underwriters, sales agents, representatives or brokers representing or acting on
behalf of Holdco,  the  Borrower  or any of the  Designated  Subsidiaries,  have
complied with all federal and state securities laws in connection with the offer
and sale of stock or other equity  interests  in Holdco,  the Borrower or any of
the Designated Subsidiaries.

                    (q)  Intellectual  Property.  The  Borrower  and each of the
Designated  Subsidiaries  owns or possesses  the valid right to use all material
patents,  patent  applications,   patent  and  know-how  licenses,   inventions,
technology, permits, trademark registrations and applications,  product designs,
applications,  processes, trademarks, service marks, trade names, copyrights and
licenses and rights in respect of the  foregoing,  set forth on Schedule  5.1(q)
attached hereto,  which are used or necessary for the conduct of its business as
now conducted or hereafter proposed to be conducted,  without any known conflict
with the rights of others and free and clear of any Liens,  other than Permitted
Liens.  All such  licenses  and  rights  with  respect to  patents,  trademarks,
trademark rights,  trade names, trade name rights,  service marks and copyrights
are in full force and effect in all  material  respects,  and are not subject to
any pending or, to the best knowledge of the Borrower, threatened attack or

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revocation,  in any case  except as would  not be  reasonably  expected  to have
individually or in the aggregate, a Materially Adverse Effect.

                    (r)   Accuracy  and   Completeness   of   Information.   All
information, reports, prospectuses and other papers and data relating to Holdco,
the Borrower or any of the Designated  Subsidiaries  (other than the Projections
which are  covered  by item (k) above)  furnished  in writing by or on behalf of
Holdco, the Borrower or any of the Designated  Subsidiaries to any of the Credit
Parties  were,  at the time  furnished,  complete  and  correct in all  material
respects to the extent  necessary  to give the Credit  Parties true and accurate
knowledge of the subject matter.

                    (s) Agreements with Affiliates and Management Agreements. As
of the Agreement Date,  except as set forth on Schedule 5.1(s) attached  hereto,
neither the Borrower nor any of the Designated Subsidiaries has (i) any material
written  agreements  or binding  arrangements  of any kind with any Affiliate or
(ii) any material  management or consulting  agreements of any kind, not entered
into in the ordinary course of business.

                    (t)  Environmental  Matters.   Except  as  is  described  on
Schedule 5.1(t) attached hereto or as,  individually or in the aggregate,  could
not reasonably be expected to have a Materially Adverse Effect:

                         (i) None of the Properties  contains,  in, on or under,
any  Hazardous  Materials  except (A) in such  quantities  as  required  for the
conduct in the ordinary course of the Borrower's business or, to the best of the
Borrower's knowledge,  the business of the fee owner of such Property,  and then
only in  compliance  with  applicable  Environmental  Laws, or (B) in amounts or
circumstances  that do not give rise to material  liability under  Environmental
Laws.

                         (ii) The Borrower and the Designated  Subsidiaries  are
in compliance with all applicable  Environmental Laws, and there is no condition
which could  interfere with the continued  operation of any of the Properties in
compliance  with  Environmental  Laws or impair the  financial  condition of the
Borrower.

                         (iii)  Neither the Borrower  nor any of the  Designated
Subsidiaries  has received from any  Governmental  Authority or any other Person
any written complaint, notice of violation, alleged violation,  investigation or
advisory  action  or  notice  of  potential   liability   regarding  matters  of
environmental  protection or permit  compliance under  applicable  Environmental
Laws with regard to the  Properties,  and neither  the  Borrower  nor any of the
Designated   Subsidiaries   is  aware  that  any   Governmental   Authority   is
contemplating  delivering to the Borrower or any of the Designated  Subsidiaries
any such notice.  There is no condition  or  circumstance  currently or with the
passage of time that could  reasonably  be  expected to present the basis of any
such  notice.  There  has  been no  pending  or,  to the  Borrower's  knowledge,
threatened complaint, notice of violation,  alleged violation,  investigation or
notice of potential liability under Environmental Laws with regard to any of the
Properties.

                         (iv)  Hazardous  Materials  have  not  been  generated,
treated,  stored, disposed of, at, on or under any of the Properties in material
violation  of  Environmental  Laws,  or in a  manner  that  could  give  rise to
liability  under  Environmental  Laws  nor  have any  Hazardous  Materials  been
transported or disposed of from any of the Properties to any other location in

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violation  of  Environmental  Laws  nor in a manner  that  could  reasonably  be
anticipated to give rise to liability under Environmental Laws.

                         (v)  Neither  the  Borrower  nor any of the  Designated
Subsidiaries is a party to any governmental  administrative  actions or judicial
proceedings  pending  under any  Environmental  Law with  respect  to any of the
Properties,  nor are there any consent decrees or other decrees, consent orders,
administrative  orders or other  orders,  or other  administrative  or  judicial
requirements  outstanding under any Environmental Law with respect to any of the
Properties.

                         (vi) There has been no release of  Hazardous  Materials
into  the  environment  at or from any of the  Properties,  or  arising  from or
relating  to  the   operations  of  the  Borrower  or  any  of  the   Designated
Subsidiaries,  in violation of Environmental  Laws or in amounts that could give
rise to liability under Environmental Laws.

                    (u) Payment of Wages;  Labor Matters.  The Borrower and each
of the Designated  Subsidiaries  are in compliance with the Fair Labor Standards
Act, as amended,  in all  material  respects,  and the  Borrower and each of the
Designated  Subsidiaries have complied in all material respects with all minimum
and overtime wage requirements  applicable to their respective employees.  As of
the Agreement Date, except as disclosed on Schedule 5.1(u),  except as would not
be reasonably expected to have,  individually or in the aggregate,  a Materially
Adverse  Effect:  (i) no labor  contract  to which  the  Borrower  or any of the
Designated  Subsidiaries  is a party or is  otherwise  subject is  scheduled  to
expire during the term of this  Agreement;  (ii) neither the Borrower nor any of
the  Designated  Subsidiaries  has,  within the two (2) year period  immediately
preceding the Agreement Date,  taken any action which would have  constituted or
resulted in a `plant closing' or `mass layoff' within the meaning of the Federal
Worker  Adjustment  and  Retraining  Notification  Act of  1988  or any  similar
applicable  federal,  state or local  law,  and the  Borrower  does not have any
reasonable  expectation that it will incur any material liability under such Act
at any time during the term of this  Agreement;  (iii) all of the  operations of
the  Borrower  and the  Designated  Subsidiaries  are  conducted in all material
respects in compliance with all applicable rules and regulations  promulgated by
the  Occupational  Safety  and  Health   Administration  of  the  United  States
Department  of  Labor;  (iv)  neither  the  Borrower  nor any of the  Designated
Subsidiaries is a party to any material labor dispute (other than any immaterial
disputes  with the  Borrower's  or such  Designated  Subsidiary's  employees  as
individuals  and not affecting the  Borrower's or such  Designated  Subsidiary's
relations  with any labor group or its workforce as a whole);  and (v) there are
no pending  or, to the  Borrower's  knowledge,  threatened  strikes or  walkouts
relating to any labor  contracts to which the Borrower or any of the  Designated
Subsidiaries is a party or is otherwise subject.  As of the Agreement Date, none
of the  employees of the  Borrower or any of the  Designated  Subsidiaries  is a
party to any  collective  bargaining  agreement  with the Borrower or any of the
Designated Subsidiaries.

                    (v) Priority. The Security Interest is a valid and perfected
first priority (except for Permitted  Liens) security  interest in substantially
all of the Collateral in favor of the Collateral  Agent,  for the benefit of the
Credit  Parties,  securing,  in  accordance  with  the  terms  of  the  Security
Documents,  the  outstanding  Obligations.  The Collateral is not subject to any
Liens other than Permitted  Liens.  The Liens created by the Security  Documents
are enforceable as security for the  outstanding  Obligations in accordance with
their terms with respect to the Collateral except to the extent that enforcement
thereof may be limited by bankruptcy, insolvency, liquidation, reorganization,

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reconstruction and other similar laws affecting enforcement of creditors' rights
generally and to the application of general equitable principles.

                    (w) Indebtedness. Except for Permitted Debt, none of Holdco,
the Borrower or any of the Designated  Subsidiaries has  outstanding,  as of the
Agreement  Date,  and after  giving  effect to the initial  Advance of the Loans
hereunder on the Agreement Date, any Indebtedness.

                    (x)  Investments.  As of the  Agreement  Date,  none  of the
Borrower or any of the Designated  Subsidiaries owns any Equity Interests in, or
has  outstanding  loans or advances to, or guaranties of the obligations of, any
Person except as reflected in the Financial Statements, or disclosed on Schedule
5.1(c) or Schedule 5.1(x) attached hereto. Schedule 5.1(x) sets forth, as of the
Agreement  Date,  whether  each  Investment  identified  thereon  constitutes  a
Restricted  Investment,  an Unrestricted  Investment,  a Foreign  Investment,  a
Domestic   SpectraSite  Mexico  Investment  or  a  Foreign   SpectraSite  Mexico
Investment  and the amount that has been  Invested by members of the  Restricted
Group in each such Investment as of the Agreement Date.

                    (y) Material Contracts.  Schedule 5.1(y) contains a complete
list, as of the Agreement  Date, of each contract,  agreement or commitment (the
"Material   Contracts")   to  which  the  Borrower  or  any  of  the  Designated
Subsidiaries is a party the termination of which could reasonably be expected to
have a Materially  Adverse Effect,  and, upon the request of the Arrangers,  the
Borrower  will  provide  the  Arrangers  with a copy  of any  such  contract  or
agreement.  Schedule 5.1(y) further  identifies,  as of the Agreement Date, each
Material  Contract which requires  consent to the granting of a Lien in favor of
the  Collateral  Agent on the rights of the  Borrower  or any of the  Designated
Subsidiaries thereunder.

                    (z)  Broker's  or  Finder's  Commissions.   No  broker's  or
finder's fee or  commission  will be payable with respect to the issuance of the
Notes,  and no other similar fees or commissions will be payable by the Borrower
or any of the Designated  Subsidiaries for any other services rendered to any of
them ancillary to the transactions  contemplated  herein except to the Arrangers
and their respective Affiliates.

                    (aa) SBC  Lease  Documents;  Holdco  Notes  Indentures.  The
Borrower has provided to the  Arrangers  (i) correct and complete  copies of the
SBC Lease  Documents  and (ii) a correct and complete copy of each of the Holdco
Notes Indentures and the notes and other  agreements and documents  executed and
delivered pursuant thereto. To the best of the Borrower's knowledge, none of the
representations  and  warranties  made by or with respect to any of Holdco,  the
Borrower and the Borrower's Subsidiaries as set forth in the SBC Lease Documents
is incorrect in any material respect.

                    (bb)  Solvency.  As of the  Agreement  Date and after giving
effect to the  transactions  contemplated  by this  Agreement and the other Loan
Documents,  (i) the  property of the  Borrower,  at a fair  valuation on a going
concern basis,  will exceed its debt;  (ii) the capital of the Borrower will not
be unreasonably  small to conduct its business;  and (iii) the Borrower will not
have incurred debts, or have intended to incur debts,  beyond its ability to pay
such debts as they mature.  For purposes of this Section  5.1(bb),  "debt" means
any liability on a claim, and "claim" means (i) the right to payment, whether or
not  such  right  is  reduced  to  judgment,  liquidated,  unliquidated,  fixed,
contingent,  matured,  unmatured,   undisputed,  legal,  equitable,  secured  or
unsecured, or (ii) the right to an equitable remedy for breach of performance if

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such breach  gives rise to a right to  payment,  whether or not such right to an
equitable remedy is reduced to judgment, fixed, contingent,  matured, unmatured,
undisputed, secured or unsecured.

                    (cc)  Real  Property  and  Tower  Sites.  To the best of the
Borrower's  knowledge,  each  of the  material  leases  of the  Borrower  or the
Designated Subsidiaries is valid,  enforceable and in full force and effect. The
Borrower or a Designated  Subsidiary,  as applicable,  is the sole holder of the
lessee's  interests  under each lease to which it is a party and,  except to the
extent  not  reasonably  likely to have,  individually  or in the  aggregate,  a
Materially  Adverse Effect, has the right to pledge and assign the same. Neither
the  Borrower  nor any of the  Designated  Subsidiaries  has made any  pledge or
assignment  of any of its rights  under any such leases  except  pursuant to the
Security Documents and except for the Nextel  Subordinated Lien, and there is no
default or condition which, with the passage of time or the giving of notice, or
both,  would constitute a material default on the part of the Borrower or any of
the Designated  Subsidiaries  or, to the best of the Borrower's  knowledge,  any
other party, under such leases with respect to any Material Towers.

          Section 5.2  Survival of  Representations  and  Warranties,  etc.  All
representations  and  warranties  made under this  Agreement  and the other Loan
Documents  shall be deemed  to be made,  and  shall be true and  correct  in all
material  respects,  at and as of the  Agreement  Date  and on the  date of each
Advance  and on the date of  issuance  of each  Letter of Credit,  except to the
extent  expressly  applicable  only to an  earlier  date or no  longer  true and
correct as a result of actions or changes in  accordance  with the terms hereof.
All representations and warranties made under this Agreement shall survive,  and
not be waived by, the execution hereof by the Credit Parties,  any investigation
or inquiry by any Credit Party,  or the making of any Advance or the issuance of
any Letter of Credit under this Agreement.

                          ARTICLE 6 - General Covenants


          So   long  as  any  of  the   Obligations   (other   than   contingent
indemnification  obligations) are outstanding and unpaid,  or the Borrower shall
have the right to borrow  hereunder  (whether or not the conditions to borrowing
have been or can be  fulfilled),  or any  Letter of Credit is  outstanding,  and
unless  the  Majority  Lenders,  or such  greater  number of  Lenders  as may be
expressly provided herein, shall otherwise consent in writing:

          Section 6.1 Preservation of Existence and Similar  Matters.  Except as
permitted in Section 8.5 hereof,  the Borrower  will, and will cause each of the
Designated Subsidiaries to:

                         (i)  preserve  and  maintain  its  existence,   rights,
franchises,  licenses  and  privileges  in the  state  of its  incorporation  or
organization and in each other state in which it operates a material part of its
business, including, without limitation, all Necessary Authorizations, except as
would not reasonably be expected to have,  individually  or in the aggregate,  a
Materially Adverse Effect; and

                         (ii) qualify and remain  qualified and authorized to do
business in each  jurisdiction  in which the character of its  properties or the
nature of its business requires such qualification or authorization except where
the failure to be qualified or authorized  would reasonably be expected to have,
individually or in the aggregate, a Materially Adverse Effect.

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          Section 6.2 Business;  Compliance  with  Applicable  Law. The Borrower
will,  and will cause each of the Designated  Subsidiaries  to, engage solely in
the  business  of the Tower  Operations,  the Other  Operations  and in  related
business  activities.  The Borrower  will, and will cause each of the Designated
Subsidiaries to, comply with the requirements of all Applicable Laws (including,
without limitation,  all tower marking and lighting  requirements of the FAA and
the FCC) except where the failure to so comply would not  reasonably be expected
to have, individually or in the aggregate, a Materially Adverse Effect.

          Section 6.3  Maintenance of Properties and Assets.  The Borrower will,
and will cause each of the Designated  Subsidiaries to, (a) maintain or cause to
be maintained in the ordinary  course of business in good repair,  working order
and condition  (reasonable  wear and tear excepted) all  properties  (including,
without  limitation,  all Towers) used in their respective  businesses  (whether
owned or held under  lease),  and from time to time make or cause to be made all
needed and appropriate repairs, renewals,  replacements,  additions, betterments
and improvements  thereto except where the failure to do so would not materially
adversely  affect or apply to any Material  Towers,  and (b) obtain and maintain
and preserve in full force and effect,  and renew and extend as  necessary,  all
Material Contracts and all Necessary  Authorizations  with respect to the Towers
except  where the  failure to do so would not  reasonably  be  expected to have,
individually or in the aggregate, a Materially Adverse Effect.

          Section 6.4  Accounting  Methods and Financial  Records.  The Borrower
will  maintain,  on a  consolidated  basis  with its  Subsidiaries,  a system of
accounting  established and  administered  in accordance with GAAP  consistently
applied,  keep adequate  records and books of account in which complete  entries
will be made in accordance with such accounting principles  consistently applied
and  reflecting  all  transactions  required to be reflected by such  accounting
principles,  and keep  accurate  and  complete  records of the  Collateral.  The
Borrower and the Designated  Subsidiaries  will maintain a fiscal year ending on
December 31.

          Section 6.5  Insurance.  The Borrower will, and will cause each of the
     Designated Subsidiaries to:

               (a) Maintain  insurance,  including,  but not limited to,  public
liability  coverage  insurance,  from responsible  companies in such amounts and
against such risks to the Borrower and each of the Designated Subsidiaries as is
prudent and customary for Persons in the Tower Operations  business  (including,
without limitation, larceny, embezzlement, employee fidelity, and other criminal
misappropriation  insurance and insurance  against claims for personal or bodily
injury, death or property damage);

               (b) Keep their respective Assets (including,  without limitation,
broadcast Towers, but excluding all other Towers and all motor vehicles) insured
by  responsible  companies  against  loss or  damage by fire,  theft,  burglary,
pilferage,  loss in transit,  explosions and hazards insured against by extended
coverage,   in  amounts  and  scope  of  coverage  which  are  prudent  for  the
communications  tower  industry,  in  accordance  with industry  standards,  all
premiums thereon to be paid by the Borrower and the Designated Subsidiaries;

               (c) Require that each casualty and liability insurance policy for
the Borrower and the  Designated  Subsidiaries  provide for at least thirty (30)
days' prior written  notice to the  Collateral  Agent of any  termination  of or
proposed  cancellation or non-renewal of such policy,  or material  reduction in
coverage, and name the Collateral Agent (for the benefit of the Credit Parties)

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as additional  named loss payee to the extent of the  Obligations and additional
named insured; and

               (d) In the event of a casualty  loss covered by the  insurance of
the Borrower or any Designated  Subsidiary,  Net Cash Proceeds of such insurance
of  $10,000,000  or less paid in respect of such loss shall be paid directly to,
and may be retained  by, the  Borrower.  Net  Proceeds of insurance in excess of
$10,000,000  shall be paid to the Collateral Agent and shall be applied to repay
the Loans to the extent set forth in Section  2.7(b) or Section 10.3 hereof,  as
appropriate, and (ii) thereafter be applied as provided in Section 2.7(b).

          Section 6.6 Payment of Taxes and Claims.  The Borrower  will, and will
cause each of the  Designated  Subsidiaries  to, pay and  discharge all material
taxes,  including,  without  limitation,   withholding  taxes,  assessments  and
governmental  charges or levies required to be paid by them or imposed upon them
or their income or profits or upon any  properties  belonging to them,  prior to
the date on which  penalties  attach  thereto,  and all lawful claims for labor,
materials and supplies which, if unpaid,  might become a Lien or charge upon any
of their properties; except that no such tax, assessment,  charge, levy or claim
need be paid which is being  diligently  contested in good faith by  appropriate
proceedings  and for which reserves in conformity  with GAAP shall have been set
aside  on the  appropriate  books,  but  only so long as such  tax,  assessment,
charge,  levy or claim does not become a Lien or charge  other than a  Permitted
Lien and no foreclosure,  distraint, sale or similar proceedings shall have been
commenced. The Borrower will, and will cause each of the Designated Subsidiaries
to, timely file all material  information returns required by federal,  state or
local tax authorities.

          Section 6.7 Visits and Inspections.  The Borrower will, and will cause
each of the Designated  Subsidiaries  to, permit  representatives  of any Credit
Party at its expense,  during normal  business hours,  upon  reasonable  advance
notice to the Borrower or such  Designated  Subsidiary,  as  applicable,  to (a)
visit and inspect the properties of the Borrower or such Designated  Subsidiary,
(b)  inspect and make  extracts  from and copies of their  respective  books and
records,  and  (c)  discuss  with  their  respective  principal  officers  their
respective  businesses,  assets,  liabilities,  financial positions,  results of
operations and business prospects;  provided,  however, that notwithstanding the
foregoing  at any time after the  occurrence  and during  the  continuance  of a
Default or Event of Default,  any such visit or inspection by any Arranger shall
be at the  expense of the  Borrower.  The  Borrower  and each of the  Designated
Subsidiaries  will also permit  representatives  of any of the Lead Arrangers to
discuss with their  respective  auditors their  respective  businesses,  assets,
liabilities, financial positions, results of operations and business prospects.

          Section  6.8 Use of  Proceeds.  The  Borrower  will use the  aggregate
proceeds  of all  Advances  (a) to finance the SBC  Transaction,  (b) to finance
Permitted  Acquisitions  and  Permitted  Investments,  (c)  to  make  Restricted
Payments to Holdco  permitted  under Section 8.7 hereof,  (d) to provide funding
for the acquisition, leasing, construction/development, management and build-out
of Towers,  Tower  Sites,  Shared  Tenant  Infrastructure  Sites and other sites
related  to the  foregoing,  in each  case as  permitted  hereunder  and (e) for
working  capital  and  other  general  corporate  purposes  (including,  without
limitation,  fees and expenses  relating to the SBC  Transaction,  any Permitted
Acquisitions and any Permitted Investments, and the transactions contemplated by
this Agreement and the other Loan Documents).  No proceeds of Advances hereunder
shall be used for the purchase or carrying or the extension of credit for the

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purpose of  purchasing  or  carrying  any  margin  stock  within the  meaning of
Regulations U and X of the Board of Governors of the Federal Reserve System.

          Section  6.9  Real  Property.  With  respect  to each  parcel  of real
property,  whether  owned or leased  by the  Borrower  or any of the  Subsidiary
Guarantors on the Agreement Date or at any time thereafter  (including,  without
limitation,  any Tower Site),  the Borrower  shall,  and shall cause each of the
Subsidiary Guarantors, promptly to:

               (a) Execute and deliver to the  Collateral  Agent,  a  collateral
assignment of, to the extent permitted therein, any Tower Site Lease Agreements,
Tower Space Lease Agreements and/or Tower Site Management Contracts entered into
by the Borrower or any of the  Subsidiary  Guarantors  as lessor with respect to
such real  property.  The Borrower  shall also make  available to the Collateral
Agent,  upon request  therefor,  at the central location  referred to in Section
6.9(c)  hereof,  copies of all Tower Site Lease  Agreements,  Tower  Space Lease
Agreements and Tower Site Management  Agreements entered into by the Borrower or
any of the  applicable  Subsidiaries,  and to the  extent  that any  consent  is
required to the pledge or  assignment of any Tower Site Lease  Agreement,  Tower
Space Lease Agreement or Tower Site Management  Agreement by the Borrower or any
of the  Subsidiary  Guarantors  to the  Collateral  Agent  as  security  for the
Obligations,  the Borrower shall use commercially  reasonable  efforts to obtain
such consent in writing to the extent  reasonably  requested  by the  Collateral
Agent.

               (b) Execute and deliver to the Collateral  Agent, a Mortgage (or,
in the case of real property  acquired (or leased) prior to the Agreement  Date,
an amendment to, or amendment and restatement of, any Mortgage  delivered before
the Agreement  Date)  covering each such parcel of real property that has a fair
market value in excess of  $15,000,000  and the principal  use of which,  in the
ordinary course of the Borrower's  business,  is not as a Tower Site or a Shared
Tenant Infrastructure Site; provided,  however,  neither the Borrower nor any of
the Subsidiary  Guarantors  shall be required to grant to the Collateral Agent a
Mortgage in respect of any parcel of real  property  owned by the United  States
government or any agency thereof. All of the Mortgages shall be delivered by the
Borrower and the  Subsidiary  Guarantors to the  Collateral  Agent in recordable
form for the applicable jurisdiction.

               (c) In connection  with all  Mortgages  executed and delivered by
the  Borrower  or any of  the  Subsidiary  Guarantors  hereunder,  grant  to the
Collateral Agent and its designees access to all other documentation  reasonably
requested by the Collateral Agent (all of which shall be compiled in one central
location) in connection with each such grant or assignment,  including,  without
limitation,  policies  of title  insurance,  copies  of any  Phase I or Phase II
environmental audits, flood zone certificates,  financing statements and fixture
filings,  surveys and  appraisals,  in each case to the extent  available  to or
otherwise reasonably obtainable by the Borrower or the Subsidiary Guarantors.

               (d) The Collateral  Agent will release a Mortgage upon receipt of
written  notice from the Borrower  that the Tower Site Lease  Agreement  for the
property subject to such Mortgage has expired,  been terminated or such property
has been transferred in connection with a Permitted Disposition.

          Section 6.10 Indemnity. The Borrower, for itself and on behalf of each
of the Designated Subsidiaries,  agrees, jointly and severally, to indemnify and
hold  harmless  each  Indemnified  Party from and  against  any and all  claims,
liabilities, losses, damages, actions, reasonable attorneys' fees and expenses

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(as such fees and expenses are incurred) and demands by any party, including the
costs of  investigating  and defending such claims (a) resulting from any breach
or alleged breach by Holdco, the Borrower or any of the Designated  Subsidiaries
of any representation,  warranty,  or covenant made hereunder or under any other
Loan Document; (b) arising out of or in connection with (i) the Commitments, the
Loans or otherwise  under this Agreement or any other Loan Document  (including,
without  limitation,  the taking of  collateral  security for the  Obligations),
including  the use of the  proceeds  of Loans  hereunder  in any  fashion by the
Borrower  or any of its  Subsidiaries  or the  performance  of their  respective
obligations  under the Loan  Documents  by Holdco,  the  Borrower  or any of the
Borrower's  Subsidiaries,  (ii)  allegations of any  participation by the Credit
Parties,  or any of them,  in the affairs of Holdco,  the Borrower or any of the
Borrower's Subsidiaries, or allegations that any of them has any joint liability
with Holdco, the Borrower or any of the Borrower's  Subsidiaries for any reason,
or  (iii)  any  claims  against  the  Credit  Parties,  or any of  them,  by any
shareholder,  partner, or other investor in or lender to Holdco, the Borrower or
any of the  Borrower's  Subsidiaries,  by any  brokers or finders or  investment
advisers or investment  bankers  retained by Holdco,  the  Borrower,  any of the
Borrower's  Subsidiaries  or by  any  other  third  party,  arising  out  of the
Commitments,  the Loans or  otherwise  under  this  Agreement  or any other Loan
Document;  or (c) in connection with taxes (other than income taxes or any taxes
attributable  to a Credit  Party's  failure to comply with the  requirements  of
Section 2.13(b) (but only with respect to such Credit  Party)),  fees, and other
charges  payable in  connection  with the  Loans,  or the  execution,  delivery,
recording, and enforcement of this Agreement, the Security Documents (including,
without  limitation,  any Mortgage  whenever filed or recorded),  the other Loan
Documents,  and any  amendments  thereto  or  waivers  of any of the  provisions
thereof;  unless the Person seeking  indemnification  hereunder is determined in
such case to have acted with gross negligence or willful misconduct, in any case
by a final,  non-appealable  judicial order. The obligations of the Borrower and
the  Designated  Subsidiaries  under this  Section  6.10 are in addition to, and
shall not otherwise limit, any liabilities  which the Borrower or any Designated
Subsidiary  might  otherwise  have in connection  with any warranties or similar
obligations of the Borrower or such Designated Subsidiary in any other agreement
or instrument or for any other reason.  It is understood and agreed that, to the
extent not  precluded by a conflict of interest,  each  Indemnified  Party shall
endeavor to work  cooperatively  with the Borrower with a view to minimizing the
legal  and  other  expenses  associated  with  any  defense  and  any  potential
settlement  or  judgment.   To  the  extent   reasonably   practicable  and  not
disadvantageous  to any  Indemnified  Party,  it is  anticipated  that a  single
counsel  shall be used.  Settlement  of any claim or  litigation  involving  any
material  indemnified  amount  shall be subject to the  approval of the Borrower
(which approval shall not be unreasonably withheld).

          Section 6.11 Interest Rate  Hedging.  Within one hundred  eighty (180)
days from the Agreement  Date,  the Borrower shall have entered into one or more
Interest Hedge Agreements which fix or place a limit on the Borrower's  interest
obligations at interest rates reasonably  acceptable to the Administrative Agent
with  respect  to the Loans such that,  at all times  thereafter,  not less than
fifty  percent  (50%) of the  aggregate  amount of Funded  Debt of  Holdco,  the
Borrower and the  Borrower's  Subsidiaries  outstanding  shall be hedged or on a
fixed rate basis.  Each Interest  Hedge  Agreement  shall provide  interest rate
protection  for a period of the  lesser of (a) three (3) years  from the date of
such Interest Hedge  Agreement,  or (b) the period  remaining  until the Initial
Maturity  Date with respect to Interest  Rate Hedge  Agreements  entered into in
connection  with the  Revolving  Loans  and the  Tranche  A Loans  and the Final
Maturity  Date with respect to Interest  Rate Hedge  Agreements  entered into in
connection with the Tranche B Loans. All obligations of the Borrower to any

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Lender,  or any  Affiliate  of  any  Lender,  pursuant  to  any  Interest  Hedge
Agreement, shall be deemed to be part of the Obligations.

          Section 6.12 Environmental Matters.  Except as would not reasonably be
expected to have, individually or in the aggregate, a Materially Adverse Effect,
the conduct of the Borrower's and each of the Designated  Subsidiaries' business
operations  will  not  violate  any  Environmental   Laws  (including,   without
limitation,  any  rules  and  regulations  applicable  to the  Borrower  and the
Designated  Subsidiaries  relating to radiated power density maximum permissible
exposure   levels),   and  neither  the  Borrower  nor  any  of  the  Designated
Subsidiaries  will use any Hazardous  Materials at any of its places of business
except such  materials as are  incidental to the  Borrower's or such  Designated
Subsidiary's normal course of business,  maintenance and repairs,  and then only
in compliance with all applicable  Environmental  Laws. The Borrower and each of
the Designated Subsidiaries shall have, maintain,  apply for and/or timely renew
all permits required for the Towers and other business  operations at its places
of business or otherwise  except where the failure to do so would  reasonably be
expected to have, individually or in the aggregate, a Materially Adverse Effect.
The Borrower shall promptly  notify the Lead Arrangers in writing of (a) any and
all material enforcement,  cleanup, remedial,  removal, or other governmental or
regulatory  actions  instituted,  completed or threatened in writing pursuant to
any  applicable  Environmental  Law;  (b)  the  existence  of any  environmental
condition or  circumstances  known to the  Borrower;  and (c) all claims made or
threatened  by any third  party  against the  Borrower or any of the  Designated
Subsidiaries relating to damages, contribution, cost recovery compensation, loss
or injury  resulting from any Hazardous  Materials,  which,  in any case,  could
reasonably be expected to have,  individually or in the aggregate,  a Materially
Adverse  Effect.  The Borrower shall  promptly  notify the Lead Arrangers of any
material  remedial  action  taken  by the  Borrower  or  any  of the  Designated
Subsidiaries  pursuant to  Environmental  Laws with respect to the Borrower's or
such Designated Subsidiary's Towers or other business operations.

          Section 6.13 ERISA.  The Borrower  shall,  and shall cause each of the
Designated  Subsidiaries  to, at all  times  make,  or cause to be made,  prompt
payment of all material  contributions  required  under the terms of their Plans
and to meet the minimum  funding  standards  set forth in ERISA with  respect to
such Plans. The Borrower shall maintain,  and shall cause each of the Designated
Subsidiaries  to  maintain,  each of the Plans of  Borrower  and the  Designated
Subsidiaries in material  compliance with their terms and applicable  provisions
of ERISA and the Code.

          Section 6.14 Further Assurances. Holdco and the Borrower will promptly
cure,  or cause to be cured,  defects in the creation and issuance of any of the
Notes and the execution and delivery of the Loan Documents  (including,  without
limitation, this Agreement), resulting from any act or failure to act by Holdco,
the Borrower or any of the  Designated  Subsidiaries  or any employee or officer
thereof.  Holdco and the Borrower,  at their sole expense, will promptly execute
and deliver to the Credit Parties,  or cause to be executed and delivered to the
Credit  Parties,  all  such  other  and  further  documents,   agreements,   and
instruments in compliance with or accomplishment of the covenants and agreements
of Holdco,  the Borrower and the Designated  Subsidiaries  in the Loan Documents
(including,  without limitation, this Agreement), or to obtain any consents, all
as may be reasonably  necessary or appropriate in connection therewith as may be
reasonably requested.

          Section 6.15 Covenants Regarding Additional Collateral.

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               (a) Concurrently with (x) the consummation of each Acquisition by
the Borrower (whether  directly or indirectly) of any new Subsidiary  Guarantor,
(y) the formation of any new Subsidiary Guarantor,  or (z) the re-designation of
any Unrestricted  Subsidiary as a Restricted Subsidiary,  the Borrower will, and
will cause each of the  applicable  Subsidiaries  to,  provide to the Collateral
Agent the following:

                    (i) a  completed  questionnaire,  in the form of  Exhibit  X
attached hereto, with respect to such new Subsidiary Guarantor;

                    (ii) a  duly  executed  amendment  to  the  Borrower  Pledge
Agreement or the Subsidiary Pledge Agreement,  as applicable,  pursuant to which
all of the Equity  Interests in such new  Subsidiary  Guarantor held directly or
indirectly  by the  Borrower  shall  be  pledged  to  the  Collateral  Agent  as
additional  Collateral  securing the  Obligations  to be held by the  Collateral
Agent in  accordance  with the terms of the  Borrower  Pledge  Agreement  or the
Subsidiary  Pledge  Agreement,  as applicable,  together with all original share
certificates  representing  such Equity Interests and duly executed  certificate
powers (or, in the case of uncertificated Equity Interests,  any necessary UCC-1
financing statement forms);

                    (iii) a duly executed  supplement to the Subsidiary Guaranty
for such new Subsidiary Guarantor, together with all schedules thereto;

                    (iv) a duly executed  supplement to the Subsidiary  Security
Agreement for such new Subsidiary Guarantor, together with all schedules thereto
and all necessary UCC-1 financing statement forms;

                    (v) in the case of any new Subsidiary  Guarantor holding any
Equity Interests in any Designated Subsidiary or Restricted  Investment,  a duly
executed  supplement to the Subsidiary Pledge Agreement,  pursuant to which such
Subsidiary  Guarantor  shall  pledge to the  Collateral  Agent all of the Equity
Interests  held by it, whether now owned or hereafter  acquired,  in (A) each of
the  Subsidiary   Guarantors,   the  Restricted  Investments  and  the  Domestic
SpectraSite  Mexico  Investments and (B) each of the Foreign  Subsidiaries,  the
Foreign Investments,  the Foreign SpectraSite Mexico Subsidiaries (to the extent
constituting  Designated  Subsidiaries  hereunder)  and the Foreign  SpectraSite
Mexico  Investments  (but not to  exceed  sixty-six  percent  (66%) of the total
Equity Interests in any such Person);

                    (vi) a loan certificate from such new Subsidiary  Guarantor,
in substantially  the form attached hereto as Exhibit W, including a certificate
of incumbency with respect to each  Authorized  Signatory of such new Subsidiary
Guarantor,  together with the following  items: (A) a copy of the certificate or
articles of incorporation,  certificate of limited partnership or certificate of
organization  of such new  Subsidiary  Guarantor,  certified  to be complete and
correct  by the  Secretary  of  State  of  the  state  of  such  new  Subsidiary
Guarantor's  organization;  (B) a  certificate  of good  standing  for  such new
Subsidiary  Guarantor issued by the Secretary of State or similar state official
for the state in which such  Subsidiary  Guarantor is organized;  (C) a complete
and correct copy of the  by-laws,  partnership  agreement  or limited  liability
company or  operating  agreement  of such new  Subsidiary  Guarantor;  and (D) a
complete and correct copy of the resolutions of the board of directors, or other
appropriate  entity,  of such  new  Subsidiary  Guarantor  authorizing  such new
Subsidiary Guarantor to execute, deliver and perform the Loan Documents to which
it is a party;

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                    (vii) in the case of an Acquisition, a collateral assignment
of the Permitted Acquisition Documents with respect thereto in substantially the
form of the Assignments of Acquisition Documents; and

                    (viii)   all   other   documentation,   including,   without
limitation,  an Intellectual  Property Security  Agreement or any other security
agreement  covering  any  additional  intellectual  property  owned  by such new
Subsidiary Guarantor and one or more opinions of counsel reasonably satisfactory
to the Collateral Agent, which in the reasonable opinion of the Collateral Agent
is appropriate with respect to such transaction.

               (b) Concurrently  with (x) the consummation of each Investment by
the Borrower (whether  directly or indirectly) in any new Restricted  Investment
or any Domestic  SpectraSite  Mexico Investment or (y) the re-designation of any
Unrestricted Investment as a Restricted Investment,  the Borrower will, and will
cause each of the applicable Subsidiary Guarantors to, provide to the Collateral
Agent the following:

                    (i)  a  duly  executed  amendment  to  the  Borrower  Pledge
Agreement or the Subsidiary Pledge Agreement,  as applicable,  pursuant to which
all  of  the  Equity  Interests  held  by  the  Borrower  (whether  directly  or
indirectly) in such new  Restricted  Investment or Domestic  SpectraSite  Mexico
Investment  shall be pledged to the  Collateral  Agent as additional  Collateral
securing the  Obligations to be held by the Collateral  Agent in accordance with
the terms of the Borrower Pledge Agreement or the Subsidiary  Pledge  Agreement,
as applicable,  together with all original share certificates  representing such
Equity  Interests  and duly  executed  certificate  powers  (or,  in the case of
uncertificated Equity Interests, any necessary UCC-1 financing statement forms);

                    (ii)  in  the  case  of  a  new  Investment,   a  collateral
assignment  of the  Permitted  Acquisition  Documents  with  respect  thereto in
substantially the form of the Assignments of Acquisition Documents; and

                    (iii)   all   other   documentation,    including,   without
limitation,  one or more  opinions  of counsel  reasonably  satisfactory  to the
Collateral  Agent,  which in the reasonable  opinion of the Collateral  Agent is
appropriate with respect to such transaction.

               (c) Concurrently with (x) the consummation of each Acquisition by
the Borrower (whether directly or indirectly) of any new Foreign  Subsidiary or,
to the extent constituting a Designated  Subsidiary  hereunder,  any new Foreign
SpectraSite Mexico  Subsidiary,  (y) the formation of any new Foreign Subsidiary
or, to the  extent  constituting  a  Designated  Subsidiary  hereunder,  any new
Foreign  SpectraSite  Mexico  Subsidiary,   or  (z)  the  consummation  of  each
Investment by the Borrower  (whether  directly or indirectly) in any new Foreign
Investment or any new Foreign SpectraSite Mexico Investment,  the Borrower will,
and will cause each of the  Subsidiary  Guarantors to, provide to the Collateral
Agent the following:

                    (i)  a  duly  executed  amendment  to  the  Borrower  Pledge
Agreement or the Subsidiary Pledge Agreement,  as applicable,  pursuant to which
all of  the  Equity  Interests  owned  by  the  Borrower  (whether  directly  or
indirectly) in such new Foreign Subsidiary,  such new Foreign SpectraSite Mexico
Subsidiary,  such new Foreign Investment or such new Foreign  SpectraSite Mexico
Investment  (but not to  exceed  sixty-six  percent  (66%) of the  total  Equity
Interests of any such Person) shall be pledged to the Collateral Agent as

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additional  Collateral  securing the  Obligations  to be held by the  Collateral
Agent in  accordance  with the terms of the  Borrower  Pledge  Agreement  or the
Subsidiary  Pledge  Agreement,  as applicable,  together with all original share
certificates  representing  such Equity Interests and duly executed  certificate
powers (or, in the case of uncertificated Equity Interests,  any necessary UCC-1
financing statement forms);

                    (ii) in the case of an Acquisition,  a collateral assignment
of the Permitted Acquisition Documents with respect thereto in substantially the
form of the Assignments of Acquisition Documents; and

                    (iii)   all   other   documentation,    including,   without
limitation,  one or more  opinions  of counsel  reasonably  satisfactory  to the
Collateral  Agent,  which in the reasonable  opinion of the Collateral  Agent is
appropriate with respect to such transaction.

               (d) At such time as the Borrower  shall,  directly or indirectly,
acquire a majority of the Equity  Interests  in  Concourse  Communications,  the
Borrower will, and will cause each of the applicable  Subsidiary  Guarantors to,
provide to the Collateral Agent, subject to clause (f) below, the following:

                    (i) a  completed  questionnaire,  in the form of  Exhibit  X
attached  hereto,  with  respect  to  Concourse  Communications  and each of its
Subsidiaries;

                    (ii) a  duly  executed  amendment  to  the  Borrower  Pledge
Agreement  pursuant to which all of the additional Equity Interests in Concourse
Communications acquired by the Borrower shall be pledged to the Collateral Agent
as additional  Collateral  securing the Obligations to be held by the Collateral
Agent in accordance  with the terms of the Borrower Pledge  Agreement,  together
with all original share certificates representing such Equity Interests and duly
executed certificate powers (or, in the case of uncertificated Equity Interests,
any necessary UCC-1 financing statement forms);

                    (iii) a duly executed  supplement to the Subsidiary Guaranty
for Concourse  Communications  and each of its  Subsidiaries,  together with all
schedules thereto;

                    (iv) a duly executed  supplement to the Subsidiary  Security
Agreement for Concourse  Communications  and each of its Subsidiaries,  together
with all schedules thereto and all necessary UCC-1 financing statement forms;

                    (v) in the case of Concourse  Communications  and any of its
Subsidiaries  holding any Equity  Interests in any other Person, a duly executed
supplement  to the  Subsidiary  Pledge  Agreement,  pursuant to which  Concourse
Communications and each such Subsidiary shall pledge to the Collateral Agent all
of the Equity Interests,  whether now owned or hereafter acquired by it, in such
Person;

                    (vi) a loan  certificate from Concourse  Communications  and
each of its  Subsidiaries,  in substantially the form attached hereto as Exhibit
W,  including  a  certificate  of  incumbency  with  respect to each  Authorized
Signatory of such new Guarantor,  together with the following  items: (A) a copy
of  the  certificate  or  articles  of  incorporation,  certificate  of  limited
partnership or certificate of organization  of such new Guarantor,  certified to
be  complete  and  correct  by the  Secretary  of State of the state of such new
Guarantor's organization; (B) a certificate of good standing for such new

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Guarantor  issued by the  Secretary of State or similar  state  official for the
state in which such  Guarantor is organized;  (C) a complete and correct copy of
the by-laws,  partnership  agreement or limited  liability  company or operating
agreement  of such new  Guarantor;  and (D) a complete  and correct  copy of the
resolutions of the board of directors,  or other appropriate entity, of such new
Guarantor  authorizing  such new  Guarantor to execute,  deliver and perform the
Loan Documents to which it is a party; and

                    (vii)   all   other   documentation,    including,   without
limitation,  an Intellectual  Property Security  Agreement or any other security
agreement  covering  any  additional  intellectual  property  owned by Concourse
Communications  or any of its  Subsidiaries  and one or more opinions of counsel
reasonably satisfactory to the Collateral Agent, which in the reasonable opinion
of the Collateral Agent is appropriate.

               (e) In the  event  that  the  Borrower  or any of the  Designated
Subsidiaries  shall be  party to a merger  permitted  pursuant  to  Section  8.5
hereof,  the Borrower  will,  and will cause each of the  applicable  Subsidiary
Guarantors to, provide to the Collateral Agent the following:

                    (i) duly executed  copies of the  documents  executed by the
Borrower and the Designated  Subsidiaries in connection  with such  transaction,
together with the filing  evidence of such merger  certified by the secretary of
state for the applicable jurisdiction; and

                    (ii) all such other  documentation  that would be  otherwise
required  hereunder  with  respect  to the  surviving  Person  of  such  merger,
including, without limitation,  supplements to Security Documents (together with
applicable  schedules  and exhibits  thereto),  new  Subsidiary  questionnaires,
amendments  to existing  Security  Documents  and  appropriate  UCC-1  financing
statement forms, in each case which in the reasonable  opinion of the Collateral
Agent is appropriate.

               (f)  Notwithstanding  anything to the  contrary  contained in the
foregoing or elsewhere in this Agreement,  the following  shall apply:  (i) with
respect to any  non-wholly  owned  Restricted  Subsidiaries  and,  to the extent
constituting Designated  Subsidiaries  hereunder,  any non-wholly owned Domestic
SpectraSite Mexico Subsidiaries,  the Borrower shall only be required to use its
commercially  reasonable  efforts to provide with respect to such Subsidiaries a
supplement to the Subsidiary  Guaranty,  a supplement to the Subsidiary Security
Agreement  or any other  documentation  providing  for a pledge of the Assets of
such  Subsidiaries;  (ii) with respect to the Equity Interests of any non-wholly
owned Foreign Subsidiary or any Foreign  Investment,  the Borrower shall only be
required  to use its  commercially  reasonable  efforts  to pledge  such  Equity
Interests to the Collateral Agent;  (iii) until such time as the Borrower shall,
directly or indirectly,  own all of the issued and outstanding  Equity Interests
of Concourse Communications,  the Borrower shall cause the board of directors of
Concourse Communications to determine whether the issuance of a Guaranty (in the

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form of a  supplement  to the  Subsidiary  Guaranty),  the  grant  of a  blanket
security  interest in  substantially  all of their  respective  assets  and/or a
pledge  of all  Equity  Interests  owned  by  Concourse  Communications  and its
Subsidiaries in favor of the Collateral Agent to secure the Obligations would be
permitted  under  Applicable  Law  and  under  their  respective  organizational
documents,  and if the board of directors determines that the issuance of such a
Guaranty (in the form of a supplement to the Subsidiary Guaranty),  the grant of
such a  security  interest  and/or  such a pledge  would not meet the  foregoing
tests, the Borrower shall use its commercially  reasonable efforts to obtain the
consent of the other holders of any Equity Interests in Concourse Communications
and its  Subsidiaries  to the  issuance of such a Guaranty,  the grant of such a
security  interest and/or such pledge;  (iv) at such time as the Borrower shall,
directly or indirectly,  own all of the issued and outstanding  Equity Interests
of Concourse  Communications,  the Borrower  shall be required to provide all of
the  documentation  required  under this  Section 6.15 with respect to Concourse
Communications  and its wholly owned Subsidiaries and shall use its commercially
reasonable  efforts to provide such documentation with respect to any non-wholly
owned  Subsidiaries  of  Concourse  Communications;  and (v) in the  case of any
Permitted Acquisition Documents to which Holdco is a party, Holdco shall execute
and deliver a collateral  assignment  of its  interests in and rights under such
Permitted  Acquisition  Documents with respect thereto in substantially the form
of the Assignments of Acquisition Documents;

               (g) Any  document,  agreement  or  instrument  executed or issued
pursuant to this  Section 6.15 shall be a `Loan  Document'  for purposes of this
Agreement.

          Section  6.16 Tower  Subsidiaries.  All Towers  owned or leased by the
Borrower or any of the Restricted Subsidiaries after March 9, 2000 shall be held
in one or more Tower  Subsidiaries;  provided  that all Original  Nextel  Towers
shall be held  exclusively by TAS. The Borrower shall comply with the provisions
of Sections 6.15 and 6.17 in respect  thereof.  Notwithstanding  anything to the
contrary  contained in this  Agreement,  the following  shall apply to the Tower
Subsidiaries:  (a) none of the Tower  Subsidiaries  will engage in any  activity
other than the owning or leasing of Towers and other  Tower  Assets or any other
activities  directly  related  thereto;  (b) none of the Tower  Subsidiaries may
liquidate or dissolve  itself (or suffer any  liquidation  or  dissolution),  or
enter into any merger,  consolidation or other business combination (except with
another  Tower  Subsidiary)   otherwise  permitted  to  be  made  by  Restricted
Subsidiaries  of  the  Borrower  pursuant  to  Section  8.5  hereof;  (c)  Tower
Subsidiaries  may transfer  Assets  freely  amongst  themselves,  but not to the
Borrower or any other  Subsidiary  of the  Borrower  that does not  constitute a
Tower Subsidiary;  and (d) none of the Tower  Subsidiaries shall be obligated in
respect of any Guaranty of the performance obligations of the Borrower or any of
its Subsidiaries  (other than under the Loan Documents).  Tower Subsidiaries may
form and  acquire  Subsidiaries  so long as such  Subsidiaries  are  also  Tower
Subsidiaries.

          Section 6.17 Covenants  Regarding the Designation of Subsidiaries  and
     Investments.

               (a) Procedure for  Designation.  As of the  Agreement  Date,  the
Borrower shall designate in writing to the Lead Arrangers (i) each of its direct
and indirect  Subsidiaries  (other than any Foreign  Subsidiaries,  any Domestic
SpectraSite Mexico Subsidiaries or any Foreign SpectraSite Mexico  Subsidiaries)
as Restricted  Subsidiaries  or Unrestricted  Subsidiaries  for purposes of this
Agreement and (ii) each of the Investments (other than Concourse Communications,
any Foreign  Investments,  any Domestic  SpectraSite  Mexico Investments and any
Foreign  SpectraSite  Mexico  Investments)  made by the  Borrower  or any of its
Subsidiaries as Restricted Investments or Unrestricted  Investments for purposes
of this  Agreement.  With respect to each  Subsidiary of the Borrower  formed or
acquired,  and each Investment of the Borrower or any of its Subsidiaries  made,
after the Agreement  Date, the Borrower  shall,  promptly after the formation or
Acquisition of such  Subsidiary or the making of such  Investment,  designate in
writing to the Lead Arrangers whether each such Subsidiary is a Restricted

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Subsidiary,  an  Unrestricted  Subsidiary,  a  Foreign  Subsidiary,  a  Domestic
SpectraSite  Mexico  Subsidiary or a Foreign  SpectraSite  Mexico Subsidiary and
whether  each  such  Investment  is a  Restricted  Investment,  an  Unrestricted
Investment,  a Foreign Investment, a Domestic SpectraSite Mexico Investment or a
Foreign  SpectraSite  Mexico  Investment.  To the extent that the Borrower shall
fail to designate a Subsidiary  or an  Investment  pursuant to the terms of this
Section  6.17(a),  within  thirty  (30)  days of the  formation  or  Acquisition
thereof,  each such Subsidiary shall be deemed to be a Restricted Subsidiary and
each such Investment  shall be deemed to be a Restricted  Investment.  After the
Agreement  Date,  so long as no Default or Event of Default then exists or would
be caused  thereby,  the Borrower  may,  upon thirty (30) days' (or such shorter
period as may be acceptable to the Administrative Agent) prior written notice to
the Administrative Agent and subject to compliance with the requirements of this
Section 6.17 and Section 6.15 hereof,  re-designate Unrestricted Subsidiaries as
Restricted Subsidiaries and Unrestricted  Investments as Restricted Investments.
Members of the Restricted Group, Restricted  Investments,  Foreign Subsidiaries,
Foreign  Investments,   Domestic   SpectraSite  Mexico  Subsidiaries,   Domestic
SpectraSite  Mexico  Investments,  Foreign  SpectraSite  Mexico  Investments and
Foreign SpectraSite Mexico Subsidiaries may not be re-designated as Unrestricted
Subsidiaries  or  Unrestricted  Investments.  Notwithstanding  anything  to  the
contrary contained herein,  (x) no Unrestricted  Subsidiary may be designated or
re-designated  as a Restricted  Subsidiary if not owned  directly by a member of
the  Restricted  Group and (y) no  Unrestricted  Investment may be designated or
re-designated  as a Restricted  Investment if not owned  directly by a member of
the Restricted Group.

               (b)   Concourse   Communications.   At  such  time  as  Concourse
Communications shall become a wholly-owned Subsidiary of the Borrower, Concourse
Communications and each of its wholly-owned Subsidiaries shall become Restricted
Subsidiaries   for  purposes  of  this  Agreement.   Subsidiaries  of  Concourse
Communications which are not wholly-owned  Subsidiaries of the Borrower shall be
designated  by  the  Borrower  as  Restricted   Subsidiaries   or   Unrestricted
Subsidiaries  and shall be subject to all provisions of this Agreement  relevant
to such designation.

               (c) Release of Collateral Relating to SpectraSite Mexico. So long
as no Default or Event of Default  then exists or would be caused  thereby,  the
Borrower may request that the Majority  Lenders agree, in their sole discretion,
to (i) the release of any Guaranties issued by or any Collateral  pledged by any
Domestic  SpectraSite  Mexico Subsidiary and any Equity Interest in any Domestic
SpectraSite  Mexico Subsidiary or Foreign  SpectraSite Mexico Subsidiary pledged
as  collateral  under any of the Loan  Documents,  and (ii) the  release  of any
Collateral relating to any Domestic SpectraSite Mexico Investment or any Foreign
SpectraSite Mexico Investment; provided, however, so long as no Default or Event
of Default exists or would be caused  thereby and so long as the  investments by
the  Borrower  and  the  Designated   Subsidiaries   (other  than  the  Domestic
SpectraSite Mexico Subsidiaries and the Foreign SpectraSite Mexico Subsidiaries)
in the Domestic  SpectraSite  Mexico  Subsidiaries  and the Foreign  SpectraSite
Mexico Subsidiaries with respect to which a release has been requested have been
less than  $25,000,000 in the aggregate since the Agreement Date, the consent of
the Majority  Lenders or any other Credit  Parties shall not be required for any
such  release.  The  Borrower  may further  request  that the  Majority  Lenders
consent, in their sole discretion,  to the transfer to Holdco by the Borrower of
all or a portion of the Equity  Interests  held  directly or  indirectly  by the
Borrower  in  each  of the  Persons  comprising  SpectraSite  Mexico;  provided,
however, so long as no Default or Event of Default exists or would be caused

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thereby  and so long  as the  investments  by the  Borrower  and the  Designated
Subsidiaries  (other than the Domestic  SpectraSite Mexico  Subsidiaries and the
Foreign  SpectraSite  Mexico  Subsidiaries) in the Domestic  SpectraSite  Mexico
Subsidiaries and the Foreign  SpectraSite Mexico  Subsidiaries to be transferred
have been less than  $25,000,000 in the aggregate  since the Agreement Date, the
consent  of the  Majority  Lenders  or any  other  Credit  Parties  shall not be
required  for any such  transfer.  To the extent that (A) any of the  Collateral
pledged by or related to any Domestic  SpectraSite  Mexico  Subsidiaries  or any
Foreign  SpectraSite Mexico  Subsidiaries shall be released hereunder or (B) any
of  the  Domestic   SpectraSite  Mexico  Subsidiaries  or  any  of  the  Foreign
SpectraSite  Mexico  Subsidiaries  shall be transferred to Holdco,  none of such
Subsidiaries shall thereafter constitute Designated Subsidiaries for purposes of
this Agreement.

                        ARTICLE 7 - Information Covenants


               So  long  as  any  of  the  Obligations  (other  than  contingent
indemnification  obligations)  is  outstanding  and unpaid or the Borrower has a
right to borrow hereunder  (whether or not the conditions to borrowing have been
or can be  fulfilled),  or any  Letter of Credit is  outstanding  and unless the
Majority Lenders, or such greater number of Lenders as may be expressly provided
herein,  shall otherwise consent in writing,  the Borrower will furnish or cause
to be furnished to, in the case of Sections 7.1, 7.2 and 7.3, each Credit Party,
and in the case of Sections 7.4 and 7.5, each Arranger, at its offices:

               Section  7.1  Quarterly  Financial  Statements  and  Information.
Within  forty-five  (45) days after the last day of each of the first  three (3)
fiscal  quarters,  and within  ninety (90) days after the last day of the fourth
fiscal quarter of each fiscal year of the Borrower,  unaudited balance sheets of
(a) Holdco, on a consolidated basis with its Subsidiaries, and (b) the Borrower,
on a  consolidated  basis with its  Subsidiaries,  in each case as at the end of
such  quarter,  and the related  statements of cash flows of such parties as set
forth in clauses (a) and (b) above, and the related  statements of operations of
(i) Holdco, on a consolidated basis with its Subsidiaries, (ii) the Borrower, on
a  consolidated  basis  with  its  Subsidiaries,   (iii)  the  Borrower,   on  a
consolidated  basis  with  the  Restricted   Subsidiaries,   (iv)  the  Domestic
SpectraSite Mexico  Subsidiaries and the Foreign SpectraSite Mexico Subsidiaries
on a consolidated  basis,  and (v) each  Designated  Subsidiary  (other than the
Restricted  Subsidiaries,  the Domestic  SpectraSite Mexico Subsidiaries and the
Foreign  SpectraSite  Mexico  Subsidiaries)  on a  consolidated  basis  with its
Designated Subsidiaries, and a revenue and expense statement of the Borrower and
its  Subsidiaries  on  a  consolidated  basis  by  Tower  Operations  and  Other
Operations,  in each case for such  quarter and for the  elapsed  portion of the
year  ended  with the last day of such  quarter,  which,  with  respect  to such
financial   statements  of  (A)  Holdco,  on  a  consolidated   basis  with  its
Subsidiaries,   and  (B)  the  Borrower  on  a   consolidated   basis  with  its
Subsidiaries,  shall set forth in comparative form such figures as at the end of
and for such quarter and the  corresponding  quarter during the preceding fiscal
year,  and against the figures set forth for such quarter,  with respect to each
quarter  ending prior to the first  anniversary  of the  Agreement  Date, in the
Projections delivered by the Borrower on the Agreement Date, and with respect to
each quarter ending thereafter,  in the Borrower's business plan provided to the
Credit Parties  pursuant to Section  7.4(d) hereof,  and shall be certified by a
Financial  Officer of the Borrower,  to be, in his or her opinion,  complete and
correct in all material respects and to present fairly in all material respects,
in accordance  with GAAP (subject only to normal  year-end  adjustments  and the
absence of footnotes),  the financial  position of (v) Holdco, on a consolidated
basis with its Subsidiaries,  (w) the Borrower, on a consolidated basis with its
Subsidiaries,  (x) the Borrower,  on a  consolidated  basis with the  Restricted
Subsidiaries, (y) the Domestic SpectraSite Mexico Subsidiaries and the Foreign

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SpectraSite Mexico Subsidiaries on a consolidated basis, and (z) each Designated
Subsidiary  (other than the Restricted  Subsidiaries,  the Domestic  SpectraSite
Mexico  Subsidiaries  and the  Foreign  SpectraSite  Mexico  Subsidiaries)  on a
consolidated basis with its Designated  Subsidiaries,  as applicable,  as at the
end of such period and the results of  operations  for such period,  and for the
elapsed portion of the year ended with the last day of such period.

               Section  7.2 Annual  Financial  Statements  and  Information.  In
addition to the quarterly  financial  statements and  information to be provided
pursuant  to  Section  7.1 with  respect  to the  fourth  fiscal  quarter of the
Borrower,  within  ninety  (90) days  after the end of each  fiscal  year of the
Borrower,  the audited balance sheet of (a) Holdco, on a consolidated basis with
its  Subsidiaries,  and (b) the  Borrower,  on a  consolidated  basis  with  its
Subsidiaries,  in each case as at the end of such fiscal year,  setting forth in
comparative  form the figures as at the end of and for the previous fiscal year,
and the related audited  statements of operations and the related  statements of
cash flows of (i) Holdco,  on a consolidated  basis with its  Subsidiaries,  and
(ii) the  Borrower,  on a  consolidated  basis  with its  Subsidiaries,  and the
related profit and loss statements of (A) Holdco,  on a consolidated  basis with
its  Subsidiaries,  and (B) the  Borrower,  on a  consolidated  basis  with  its
Subsidiaries,  in each case for such fiscal year,  setting forth in  comparative
form  the  figures  as at the  end of and  for  the  previous  fiscal  year  and
certified,  without any qualifications or explanatory paragraphs, by independent
certified  public  accountants of national  recognized  standing,  whose opinion
shall be in scope and substance  reasonably  satisfactory to the Lead Arrangers,
and  include  a  statement  signed by such  accountants  to the  effect  that in
connection  with  their  examination  of such  financial  statements  they  have
reviewed the  provisions of this Agreement and have no knowledge of any event or
condition which constitutes an Event of Default or, if they have such knowledge,
specifying the nature and period of existence  thereof and that such accountants
have  authorized the Borrower to deliver such  financial  statements and opinion
thereon to the Credit Parties  pursuant to this  Agreement;  provided,  however,
that in  issuing  such  statement,  such  independent  accountants  shall not be
required to go beyond normal  auditing  procedures  conducted in connection with
their opinion  referred to above.  Notwithstanding  the foregoing,  prior to any
fiscal year end in which either (a) EBITDA for the immediately  preceding twelve
(12) months is less than ninety  percent (90%) of Holdco EBITDA or (b) the total
assets of the  Borrower  and its  Designated  Subsidiaries  is less than  ninety
percent  (90%) of the total  assets of Holdco  and its  Subsidiaries  as of such
fiscal year end,  the Borrower  shall only be required to provide the  financial
statements  referred to in this Section 7.2 for Holdco on a  consolidated  basis
with its  Subsidiaries  and  thereafter  the Borrower  shall only be required to
provide  the  financial  statements  referred  to in  this  Section  7.2 for the
Borrower on a consolidated basis with its Subsidiaries.

               Section 7.3 Performance  Certificates.  At the time the financial
statements  are  furnished   pursuant  to  Section  7.1  hereof,  a  Performance
Certificate:

                    (a) setting forth as at the end of such fiscal quarter,  the
arithmetical  calculations  required to establish (i) the Applicable Margin, and
(ii)  whether  the  Borrower  was in  compliance  with the  requirements  of the
Financial Covenants;

                    (b)  setting  forth  for the  Borrower  and  the  Designated
Subsidiaries, for each such fiscal quarter, a summary, in the form of Schedule 3
to  the   Performance   Certificate,   of  (i)  the   number   and  type   (i.e.
telecommunications  or broadcast) of Towers built,  acquired,  leased or sold by
the Borrower or any of the Designated  Subsidiaries during such period, (ii) the
location  (by state and county) of each Tower Site built,  acquired or leased by
the Borrower or any of the Designated Subsidiaries during such period

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(identifying  the  applicable  Person owning or leasing each such Tower Site) to
the extent reasonably required by the Collateral Agent (it being understood that
such  information  shall be delivered only to the Collateral  Agent),  (iii) the
location (by state and county) of all other Collateral  acquired by the Borrower
or any of the  Designated  Subsidiaries  during  such  period  (identifying  the
applicable Person owning such Collateral) to the extent  reasonably  required by
the  Collateral  Agent  (it being  understood  that  such  information  shall be
delivered  only  to the  Collateral  Agent),  (iv) a list  of all  Acquisitions,
Investments,  Restricted  Payments and dispositions of Assets from the Agreement
Date  through the end of such period  together  with the total amount of each of
the foregoing categories,  (v) an updated summary of the corporate  organization
of the Borrower, its Subsidiaries and its Investments  (identifying whether each
of such  Subsidiaries  constitutes  a  Restricted  Subsidiary,  an  Unrestricted
Subsidiary,  a Foreign Subsidiary, a Domestic SpectraSite Mexico Subsidiary or a
Foreign  SpectraSite  Mexico  Subsidiary  and whether  each of such  Investments
constitutes  a Restricted  Investment,  an  Unrestricted  Investment,  a Foreign
Investment,  a Domestic  SpectraSite Mexico Investment or a Foreign  SpectraSite
Mexico  Investment),  and (vi) the Co-Location  Percentage as at the end of such
quarter; and

                    (c) stating  that, to the best of his or her  knowledge,  no
Default or Event of Default has occurred as at the end of such period,  or, if a
Default or an Event of Default has  occurred,  disclosing  each such  Default or
Event of Default and its nature, when it occurred,  whether it is continuing and
the steps being taken by the  Borrower  with respect to such Default or Event of
Default.

          Section 7.4 Copies of Other Reports.

                    (a) Promptly  upon receipt  thereof,  copies of all material
reports, if any, submitted to Holdco or the Borrower by their independent public
accountants regarding Holdco or the Borrower, including, without limitation, any
management  report  prepared in connection  with the annual audit referred to in
Section 7.2. The Administrative Agent agrees to provide to the Lenders a copy of
any such report which the Administrative Agent receives from the Borrower.

                    (b) Promptly  upon receipt  thereof,  copies of any material
notice or  report  received  from the FCC or the FAA or any  other  Governmental
Authority, or regarding any Material Towers.

                    (c) Annually, a certificate of insurance indicating that the
requirements of Section 6.5 hereof remain satisfied for such fiscal year.

                    (d)  Annually,  and in no event later than January 31 of any
year, a copy of the  Borrower's  annual  business plan on a quarterly  basis and
updated  Projections  for such fiscal year. The  Administrative  Agent agrees to
provide to the  Lenders a copy of any such plan which the  Administrative  Agent
receives from the Borrower.

                    (e)  In  connection   with  any  proposed   Acquisition   or
Investment by the Borrower or any of the Designated Subsidiaries,  and otherwise
from time to time and  promptly  upon each  request,  such  data,  certificates,
reports,  statements,  documents, or further information reasonably available to
the Borrower regarding the business, assets, liabilities, financial position,

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projections,  results of  operations,  of the Borrower or any of the  Designated
Subsidiaries  as  the  Credit  Parties  through  the  Administrative  Agent  may
reasonably request.

                    (f) To the extent not covered  elsewhere  in this Article 7,
promptly after the sending thereof, copies of all material financial statements,
reports  and  other  information  which  Holdco,  the  Borrower  or  any  of the
Designated Subsidiaries sends to any holder of its Funded Debt or its securities
or which Holdco,  the Borrower or any of the Designated  Subsidiaries files with
the  Securities  and Exchange  Commission or any national  securities  exchange;
provided, however, that with respect to filings with the Securities and Exchange
Commission  copies of such filings  shall be deemed to have been provided to the
Lenders upon the delivery of notice of such filing to the Administrative  Agent.
The  Administrative  Agent agrees to provide to the Lenders any such notice of a
filing with the  Securities  and Exchange  Commission  which the  Administrative
Agent receives from the Borrower.

          Section 7.5 Notice of  Litigation  and Other  Matters.  Prompt  notice
(and,  in any event  notice  within  five (5)  Business  Days of the  Borrower's
receipt of notice of the  occurrence  thereof)  of any of the  following  events
after the Borrower has received notice or otherwise becomes aware thereof.

               (a)  the  commencement  of  all  proceedings  and  investigations
involving an amount in  controversy  in excess of  $10,000,000  by or before any
governmental  body and all  actions and  proceedings  in any court or before any
arbitrator  involving an amount in controversy in excess of $10,000,000 against,
Holdco,  the  Borrower or any of the  Designated  Subsidiaries,  or any Material
Towers, or any Necessary Authorization regarding any Material Towers;

               (b) any change with respect to the business, assets, liabilities,
financial  position,  results  of  operations  of  the  Borrower  or  any of its
Subsidiaries  that could  reasonably  be expected to have a  Materially  Adverse
Effect;

               (c) any  Default  or  Event  of  Default,  or the  occurrence  or
non-occurrence of any event which constitutes, or which with the passage of time
or giving of notice or both would  constitute a default by Holdco,  the Borrower
or any of the Designated  Subsidiaries under any material agreement,  other than
this  Agreement,  to  which  Holdco,  the  Borrower  or any  of  the  Designated
Subsidiaries  is a party or by which any of their  respective  properties may be
bound,  which reasonably could be expected to have a Materially  Adverse Effect,
giving in each case the details thereof and specifying the action proposed to be
taken with respect thereto;

               (d) any material default under or misrepresentation in the Nextel
Acquisition  Documents  or the Nextel  Partners  Master  Site  Lease  Agreement,
whether made or occurring  before or after the Agreement Date, and copies of all
notices  concerning  defaults  received  or sent by the  Borrower  or any of the
Designated Subsidiaries thereunder;

               (e) any material  default under or  misrepresentation  in the SBC
Lease  Documents,  whether made or occurring before or after the Agreement Date,
and copies of all notices  concerning  defaults received or sent by Holdco,  the
Borrower or any of the Designated Subsidiaries thereunder;

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               (f) to the extent that any of the following  would  reasonably be
expected to have, individually or in the aggregate, a Materially Adverse Effect,
(i) the  maintenance  of,  or  contribution  to, by the  Borrower  or any of the
Designated  Subsidiaries,  or any of  their  ERISA  Affiliates,  in any Plan not
listed  on  Schedule  5.1(m)  attached  hereto,  or (ii) the  occurrence  of any
Reportable Event or a material non-exempt `prohibited transaction' (as such term
is defined in Section 406 of ERISA or Section  4975 of the Code) with respect to
any  Plan  of  the  Borrower  or  any  of  the  Designated  Subsidiaries  or the
institution  or threatened  institution  by PBGC of  proceedings  under ERISA to
terminate  or to  partially  terminate  any  such  Plan or the  commencement  or
threatened  commencement of any litigation  regarding any such Plan,  other than
litigation involving a routine claim for benefits; and

               (g) the occurrence of any event  subsequent to the Agreement Date
which,  if such  event had  occurred  prior to the  Agreement  Date,  would have
constituted an exception to the representation and warranty in Section 5.1(l) of
this Agreement.

The Administrative  Agent agrees to provide the Lenders copies of any such items
in this Section 7.5 which the Administrative Agent receives from the Borrower.

                         ARTICLE 8 - Negative Covenants


          So long as any of the  Obligations  (other than  contingent  indemnity
obligations)  is  outstanding  and unpaid or the  Borrower has a right to borrow
hereunder  (whether  or not the  conditions  to  borrowing  have  been or can be
fulfilled),  or any Letter of Credit is  outstanding,  and  unless the  Majority
Lenders (or such greater number of Lenders as may be expressly  provided herein)
shall otherwise consent in writing:

          Section 8.1  Indebtedness.  Neither Holdco nor the Borrower shall, and
the Borrower  shall cause each of the  Designated  Subsidiaries  not to, create,
assume,  incur or otherwise  become or remain obligated in respect of, or permit
to be outstanding, any Indebtedness except:

               (a)  Indebtedness   under  this  Agreement  and  the  other  Loan
Documents   (including,    without   limitation,    any   Incremental   Facility
Indebtedness);

               (b)  Capitalized  Lease  Obligations  of  the  Borrower  and  the
Designated Subsidiaries (other than any of the Tower Subsidiaries) not to exceed
the sum of (i) an  aggregate  principal  amount of  $25,000,000  at any one time
outstanding over the remainder of the term of such obligations,  less the amount
of any Indebtedness under Section 8.1(i) below, plus (ii) an aggregate amount of
$15,000,000 at any one time  outstanding  over the remainder of the term of such
obligation  in  respect  of a  Capitalized  Lease  Obligation  of  the  Borrower
financing a second  headquarters  building  to be located at 400 Regency  Forest
Drive, Cary, North Carolina;

               (c) Indebtedness of TAS in favor of the Nextel Tenants secured by
the Nextel Subordinated Lien pursuant to the Nextel Acquisition Documents;

               (d) Net  termination  payments under  Interest  Hedge  Agreements
required or permitted to be entered into pursuant to Section 6.11 hereof;

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               (e)  Indebtedness  of the  Borrower  or  any  of  the  Designated
Subsidiaries  to the Borrower or any wholly  owned  Restricted  Subsidiary,  and
Indebtedness  that  constitutes  an Investment  permitted  under Section  8.2(a)
hereof;

               (f) Guaranties permitted under Section 8.6 hereof;

               (g) With respect to Holdco,  (i) Indebtedness  represented by the
Holdco  Notes,  (ii)  Indebtedness   represented  by  any  Permitted  High-Yield
Securities  which are debt  securities,  (iii)  accrual of interest,  accrual of
dividends,  the accretion of accreted value, the payment of interest in the form
of  additional  Indebtedness  and  the  payment  of  dividends  in the  form  of
additional  shares  in  respect  of the  Holdco  Notes  or any  other  Permitted
High-Yield Securities, and (iv) other Indebtedness to the extent permitted to be
incurred under any of the Holdco Notes Indentures, as in effect on the Agreement
Date or as amended with the consent of the Majority Lenders;

               (h) Indebtedness representing extensions,  renewals, refinancings
or  replacements  (but  not  increases  in  principal  amounts)  of  any  of the
foregoing,  and  with  respect  to  any  extension,   renewal,   refinancing  or
replacement of the Indebtedness described in Sections 8.1(c) and 8.1(g), so long
as such  Indebtedness  shall be subject to terms and  conditions no more onerous
(including, without limitation,  substantially similar subordination provisions)
than the original Indebtedness;

               (i) Indebtedness of the Borrower and the Designated  Subsidiaries
(other  than any of the Tower  Subsidiaries)  in  respect of  conditional  sale,
rental or  purchase  money  obligations,  together  with any  Capitalized  Lease
Obligations  incurred pursuant to Section 8.1(b)(i),  in an aggregate amount not
to exceed $25,000,000 at any one time outstanding;

               (j) Other unsecured Indebtedness incurred by the Borrower and the
Designated Subsidiaries (other than any of the Tower Subsidiaries) not to exceed
$15,000,000 in the aggregate at any one time outstanding;

               (k)   Indebtedness  of  (i)  any  Domestic   SpectraSite   Mexico
Subsidiary or Foreign SpectraSite Mexico Subsidiary to any wholly owned Domestic
SpectraSite  Mexico Subsidiary or wholly owned Foreign  SpectraSite  Subsidiary,
(ii) any Foreign  Subsidiary (other than any Canadian  Subsidiary) to any wholly
owned  Foreign  Subsidiary  (other  than any  Canadian  Subsidiary),  (iii)  any
Canadian Subsidiary to any wholly owned Canadian  Subsidiary,  or (iv) Concourse
Communications or any of its Subsidiaries to Concourse  Communications or any of
its wholly owned Subsidiaries; and

               (l)  Indebtedness  of any Designated  Subsidiary  (other than the
Tower Subsidiaries) acquired in a transaction permitted by Section 8.5, provided
that (i) such  Indebtedness  existed at the time such Person became a Subsidiary
and was not  incurred in  anticipation  thereof,  (ii) no Person other than such
Subsidiary  becomes an obligor  in  respect of such  Indebtedness,  (iii) to the
extent secured, the Liens securing such Indebtedness are permitted by clause (t)
of the definition of Permitted Liens, and (iv) such Indebtedness,  together with
the  Indebtedness of any other  Subsidiary  under this Section 8.1(l),  does not
exceed $10,000,000 in the aggregate at any one time outstanding.

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          Section 8.2 Investments.  The Borrower shall not, and shall not permit
any of the  Designated  Subsidiaries  to, make any loan or advance,  or make any
Investment or otherwise  acquire any evidences of Funded Debt,  Equity Interests
or  other  securities  of any  Person,  except  that  (x) the  Borrower  and the
Designated  Subsidiaries (other than any of the Tower Subsidiaries) may (a) make
Investments in and loans to Restricted  Subsidiaries;  (b) purchase or otherwise
acquire and own (i) any Investment in direct obligations of the United States of
America or any agency thereof or obligations  Guaranteed by the United States of
America  or any agency  thereof,  (ii)  Investments  in time  deposit  accounts,
certificates  of deposit and money market  deposits  maturing within one year of
the date of  acquisition  thereof  issued  by a bank or trust  company  which is
organized  under the laws of the United States of America,  any state thereof or
any foreign  country  recognized by the United States of America having capital,
surplus and undivided  profits  aggregating  in excess of  $500,000,000  (or the
foreign currency  equivalent  thereof) and whose long-term debt is rated "A" (or
such similar equivalent rating) or higher by at least one nationally  recognized
statistical  rating  organization  (as defined in Rule 436 under the  Securities
Act) or any money market fund sponsored by a registered  broker dealer or mutual
fund  distributor,  (iii)  repurchase  obligations  with a term of not more than
thirty (30) days for underlying  securities of the types described in clause (i)
above  entered into with a bank meeting the  qualifications  described in clause
(ii) above, (iv) Investments in commercial  paper,  maturing not more than three
hundred sixty (360) days after the date of acquisition,  issued by a corporation
(other than an Affiliate of the Borrower)  organized and in existence  under the
laws of the United  States of America or any foreign  county  recognized  by the
United  States of America  with a rating at the time as of which any  Investment
therein is made of "P-1" (or higher)  according  to Moody's  Investors  Service,
Inc. or "A-1" (or higher)  according to Standard & Poor's Rating Group,  and (v)
Investments  in  securities  with  maturities of six (6) months or less from the
date of acquisition  issued or fully  guaranteed by any state,  commonwealth  or
territory of the United States of America,  or by any political  subdivision  or
taxing  authority  thereof,  and rated at least "A" by Standard & Poor's Ratings
Group or "A" by Moody's Investors Service,  Inc.; (c) make Investments permitted
by Section 8.5 hereof; (d) make Investments existing as of the Agreement Date as
set forth on  Schedule  5.1(x)  attached  hereto;  (e) make loans or advances to
employees  in the  ordinary  course of  business in an  aggregate  amount not to
exceed  $7,500,000 at any time  outstanding;  (f) acquire stock,  obligations or
securities  received in settlement  of debts  created in the ordinary  course of
business or in  satisfaction  of  judgments;  (g) incur prepaid  expenses,  hold
negotiable  instruments  held for  collection  and lease,  or make  utility  and
workers'  compensation,  performance and other similar deposits;  (h) subject to
the requirements of Sections 2.7(b) and 2.7(e) hereof, make deposits of proceeds
from Permitted Dispositions with a "qualified intermediary," "qualified trustee"
or similar Person for purposes of  facilitating  a "like-kind"  exchange made in
accordance  with the  applicable  provisions of the Code;  (i) make  Investments
representing   the  non-cash   portion  of  the  Purchase   Price  of  Permitted
Dispositions;  and  (j)  extend  trade  credit  in the  ordinary  course  of the
Borrower's  or  such  Designated   Subsidiary's  business  and  (y)(a)  Domestic
SpectraSite Mexico  Subsidiaries and Foreign SpectraSite Mexico Subsidiaries may
make  Investments  in and  loans to wholly  owned  Domestic  SpectraSite  Mexico
Subsidiaries  and wholly owned  Foreign  SpectraSite  Mexico  Subsidiaries,  (b)
Foreign Subsidiaries (other than Canadian  Subsidiaries) may make Investments in
and  loans  to  wholly  owned   Foreign   Subsidiaries   (other  than   Canadian
Subsidiaries),  (c) Canadian  Subsidiaries  may make Investments in and loans to
wholly owned Canadian  Subsidiaries,  and (d) Concourse  Communications  and its
Subsidiaries may make Investments in and loans to Concourse  Communications  and
its wholly owned Subsidiaries.

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          Section  8.3  Limitation  on Liens.  Neither  Holdco nor the  Borrower
shall, and the Borrower shall cause each of the Designated  Subsidiaries not to,
create, assume, incur or permit to exist or to be created,  assumed, incurred or
permitted to exist, directly or indirectly,  any Lien on any of their respective
properties  or  assets,  whether  now owned or  hereafter  acquired,  except for
Permitted Liens.

          Section 8.4  Amendment and Waiver.  The Borrower  shall not, and shall
cause each of the  Designated  Subsidiaries  not to,  without the prior  written
consent  of the Lead  Arrangers,  enter  into any  amendment  of, or agree to or
accept any waiver of (i), which would materially  adversely affect the rights of
the Borrower and the Credit  Parties,  or any of them, of any of the  provisions
(including,  without  limitation,  with respect to any of the Nextel Acquisition
Documents or the SBC Lease  Documents,  any of the closing  conditions set forth
therein) of, (a) its organizational  documents,  including,  without limitation,
its  certificate  or articles of  incorporation  (other than any increase in the
number of authorized shares) and by-laws, (b) the Nextel Acquisition  Documents,
(c) the Holdco Notes Indentures,  and (d) the SBC Lease Documents, or (ii) which
would  reasonably  be  expected to have,  individually  or in the  aggregate,  a
Materially  Adverse  Effect,  of  any  of  the  provisions  (including,  without
limitation,  with respect to any  Permitted  Acquisition  Documents,  any of the
closing conditions set forth therein) of, (a) the NTA Investment Documents,  (b)
the AirTouch Acquisition  Documents,  (c) the Lodestar Acquisition  Documents or
(d) any Permitted Acquisition Documents.

          Section 8.5 Liquidation; Merger; Acquisition or Disposition of Assets.
The Borrower shall not, and shall cause each of the Designated  Subsidiaries not
to, at any time: (a) liquidate or dissolve  itself (or suffer any liquidation or
dissolution) or otherwise wind up; (b) enter into any merger,  consolidation  or
other business combination;  (c) issue any Equity Interests;  (d) sell, abandon,
transfer,  trade or otherwise dispose of, in a single transaction or in a series
of related transactions,  any of its Assets, property or business outside of the
ordinary  course of  business;  (e)  acquire  any Equity  Interests  or make any
Acquisition;  (f) create or acquire any Subsidiary;  or (g) acquire or construct
any Tower and Tower Sites  without an anchor  tenant under  contract;  provided,
however, that:

                    (i) so long as no Default or Event of Default then exists or
would be caused thereby the following are permitted, subject to the restrictions
on Tower Subsidiaries set forth in Section 6.16 hereof:

                         (A)  a  merger  among  the  Borrower  or  one  or  more
                    Restricted  Subsidiaries  (other  than TAS) with or into any
                    other  Person,  or,  subject to  Section  8.5(v)  below,  an
                    Acquisition   permitted  hereunder  effected  by  a  merger;
                    provided,  however,  that (I)  with  respect  to any  merger
                    involving the Borrower or one of the Restricted Subsidiaries
                    in which  the  Borrower  is not the  surviving  entity,  the
                    surviving  entity shall assume all of the obligations of the
                    Borrower  hereunder and under the other Loan  Documents,  as
                    applicable,   and  shall   execute   and   deliver   to  the
                    Administrative  Agent an assumption  agreement,  in form and
                    substance  reasonably  satisfactory  to the Lead  Arrangers,
                    (II)  the  surviving  entity,  at its  sole  expense,  shall
                    promptly execute and deliver to the Credit Parties, or cause
                    to be executed and delivered to the Credit Parties, all such
                    other and further documents,  agreements, and instruments as
                    may be reasonably  requested by the Administrative  Agent in
                    connection with the surviving entity's obligations hereunder
                    and under  the  other  Loan  Documents  (including,  without
                    limitation,  (x) with  respect to any merger  involving  the
                    Borrower in which the Borrower is not the surviving entity,

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                    renewal promissory notes in favor of each Lender, (y) a loan
                    certificate for such surviving entity,  substantially in the
                    form of Exhibit V attached hereto, together with appropriate
                    attachments   thereto,  and  (z)  original  UCC-1  financing
                    statements,  signed by such  surviving  entity as debtor and
                    naming the Collateral  Agent as secured party to be filed in
                    all  appropriate  jurisdictions,  in such form and substance
                    and  number  as  shall  be  reasonably  satisfactory  to the
                    Collateral  Agent),  and (III) the  surviving  entity  shall
                    provide   all  other   documentation,   including,   without
                    limitation,  (x) an Intellectual Property Security Agreement
                    or any other  security  agreement  covering  any  additional
                    intellectual  property  obtained by the  Borrower,  (y) lien
                    search  results with respect to such  surviving  entity from
                    all appropriate  jurisdictions and filing offices,  together
                    with appropriate  UCC-3 termination  statements  relating to
                    Liens  which are not  Permitted  Liens,  and (z) one or more
                    opinions   of  counsel   reasonably   satisfactory   to  the
                    Collateral  Agent  which in the  reasonable  opinion  of the
                    Collateral  Agent is appropriate with respect to such merger
                    and  assumption  (any  document,   agreement  or  instrument
                    executed or issued  pursuant to this Section 8.5(i) shall be
                    a "Loan Document" for purposes of this Agreement);

                         (B) a merger  between  or among two or more  Restricted
                    Subsidiaries  or  between  or among  two or more  Designated
                    Subsidiaries that are not Restricted Subsidiaries; and

                         (C)  a  liquidation  or  dissolution  of  one  or  more
                    Designated  Subsidiaries  into  its or their  parent  entity
                    (provided that, with respect to a liquidation or dissolution
                    of any  Restricted  Subsidiary,  the  Borrower or one of the
                    Restricted Subsidiaries is such parent entity);

                    (ii) subject to  compliance  with the  mandatory  prepayment
provision of Section  2.7(b),  (x) the Borrower and the Designated  Subsidiaries
may sell, transfer or dispose of, in a single transaction or a series of related
transactions,  the  Broadcast  Services  Business,  (y)  the  Borrower  and  the
Designated Subsidiaries may sell, lease, abandon,  transfer,  trade or otherwise
dispose  of, in a single  transaction  or in a series of  related  transactions,
Assets, at the fair market value thereof and, with respect to any disposition in
which the Purchase Price is equal to or greater than $10,000,000  (other than an
exchange or swap of Assets), at least seventy-five percent (75%) of the Purchase
Price  shall be  payable  in cash,  and (z)  Designated  Subsidiaries  may issue
minority Equity Interests  therein,  and in connection with any such disposition
or issuance  the  Collateral  Agent  shall,  upon the  request of the  Borrower,
release any Liens granted pursuant to any of the Security Documents with respect
to such Assets, subject to the following conditions:

                         (A) no  Default  or Event of  Default  shall then exist
                    before or after giving effect to such disposition;

                         (B) with  respect  only to clauses (y) and (z) above of
                    this  Section  8.5(ii),  the  portion of  Annualized  EBITDA
                    attributable  to such Assets in the aggregate,  (I) together
                    with the portion of Annualized  EBITDA  attributable  to all
                    other Assets  disposed of during the  immediately  preceding
                    twelve (12) month period,  shall not exceed fifteen  percent
                    (15%) of the Borrower's  Annualized  EBITDA calculated as of
                    the last day of the  fiscal  quarter  of the  Borrower  most
                    recently ended for which the financial  statements  referred
                    to in Section 7.1 hereof have been delivered by the Borrower

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                    to the  Administrative  Agent,  and (II)  together  with the
                    portion  of  Annualized  EBITDA  attributable  to all  other
                    Assets disposed of during the term of this Agreement,  shall
                    not  exceed  twenty-five  percent  (25%)  of the  Borrower's
                    Annualized  EBITDA  calculated  as of  the  last  day of the
                    fiscal quarter of the Borrower most recently ended for which
                    the financial  statements  referred to in Section 7.1 hereof
                    have been  delivered by the  Borrower to the  Administrative
                    Agent;  provided,  however, that, in the case of an exchange
                    or swap of  Assets,  only  the  excess,  if any,  of (x) the
                    portion  of  Annualized  EBITDA  attributable  to the Assets
                    being disposed of, over (y) the portion of Annualized EBITDA
                    attributable to the Assets being acquired, shall be included
                    in  calculating   Annualized  EBITDA  for  purposes  of  the
                    Annualized EBITDA tests set forth above;

                         (C) for any  single  disposition  or series of  related
                    dispositions  with  respect  to  which  the  Purchase  Price
                    exceeds  $5,000,000,  the  Borrower  shall  provide  to  the
                    Arrangers  and the Lenders  calculations  demonstrating  pro
                    forma  compliance with the Financial  Covenants after giving
                    effect to such  disposition  or series of  dispositions,  as
                    applicable; and

                         (D) with  respect  only to clauses (y) and (z) above of
                    this  Section  8.5(ii),  each time that the Borrower and the
                    Designated    Subsidiaries   shall   complete   any   single
                    disposition or a series of dispositions  (whether related or
                    unrelated)  having an aggregate  Purchase Price with respect
                    to all  such  dispositions  of  greater  than  or  equal  to
                    $100,000,000  (with  this  basket  being  reset  to zero (0)
                    following each delivery of Projections  required hereunder),
                    the Borrower  shall provide to the Arrangers and the Lenders
                    revised   Projections    assuming    consummation   of   all
                    dispositions  included  in  such  set  of  dispositions  and
                    demonstrating   pro  forma  compliance  with  the  Financial
                    Covenants through the Final Maturity Date;

               (iii) (A) members of the Restricted  Group (other than any of the
Tower  Subsidiaries)  may  (I)  make  Investments  as  permitted  under  Section
8.2(x)(a) hereof, and (II) transfer Assets amongst themselves,  (B) the Domestic
SpectraSite Mexico  Subsidiaries and the Foreign SpectraSite Mexico Subsidiaries
may (I) make  Investments as permitted  under Section 8.2(y) hereof and (II) may
transfer  Assets  amongst  themselves,  (b)  Foreign  Subsidiaries  (other  than
Canadian  Subsidiaries)  may (I) make  Investments  as permitted  under  Section
8.2(y)  hereof and (II) may transfer  Assets  amongst  themselves,  (c) Canadian
Subsidiaries  may (I) make  Investments as permitted under Section 8.2(y) hereof
and  (II)  may  transfer   Assets   amongst   themselves,   and  (d)   Concourse
Communications  and its Subsidiaries may (I) make Investments as permitted under
Section 8.2(y) hereof and (II) may transfer Assets amongst themselves;

               (iv)  the  Borrower  and the  Designated  Subsidiaries  may  make
Capital Expenditures in the ordinary course of their respective businesses;

               (v)  subject  to  compliance  with  Sections  6.9,  6.15 and 6.16
hereof,  the Borrower and the  Designated  Subsidiaries  may make the  following
Acquisitions and Investments and form Subsidiaries with respect thereto:

                         (A)  Acquisitions of (I) Tower Assets (other than Tower
                    Assets of the type  described in the  following  clause (B))
                    located in the United States or (II) Persons organized under
                    the laws of the United States or any state thereof or the

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                    District  of  Columbia  that are  engaged  primarily  in the
                    business  of holding or  leasing  Tower  Assets of such type
                    which are located in the United States;

                         (B)   Acquisitions  of  Tower  management  and  rooftop
                    businesses  located  in the  United  States  so  long as the
                    aggregate   Purchase   Price   for  all  such   Acquisitions
                    consummated  during  the term of this  Agreement  shall  not
                    exceed the sum of (I)  $50,000,000,  plus (II) the amount of
                    any New Affiliated  Equity to the extent allocated solely to
                    this purpose;

                         (C)  Investments   (whether   structured  as  a  single
                    Investment  or a  series  of  related  Investments)  by  the
                    Restricted   Group  in,  and   Acquisitions   not  otherwise
                    permitted  under this  Section  8.5(v) of, any member of the
                    Unrestricted  Group,  Restricted  Investments and non-wholly
                    owned Restricted Subsidiaries in an amount not to exceed, in
                    the aggregate during the term of this Agreement,  the sum of
                    (I) $100,000,000, plus (II) the amount of any New Affiliated
                    Equity  to the  extent  allocated  solely  to this  purpose;
                    provided,  however,  that the  aggregate  amount of any such
                    Investments made in members of the Unrestricted Group at any
                    time   outstanding   shall  not   exceed   the  sum  of  (x)
                    $25,000,000,  plus  (y) the  amount  of any  New  Affiliated
                    Equity to the extent allocated solely to this purpose;

                         (D)   Acquisitions  of,  and  Investments  in,  Foreign
                    Subsidiaries and Foreign Investments, in each case organized
                    in a jurisdiction  other than Canada or Mexico, in an amount
                    not to  exceed,  in the  aggregate  during  the term of this
                    Agreement, the sum of (I) $10,000,000,  plus (II) the amount
                    of any New Affiliated  Equity to the extent allocated solely
                    to this purpose;

                       (E) Permitted Canadian Investments;

                       (F) Permitted Mexican Investments;

                           (G) the NTA Investment; and

                         (H)  Acquisitions  with respect to which the portion of
                    the Purchase Price in excess of any monetary  limitation set
                    forth  in  this   Agreement  is  payable  solely  in  Equity
                    Interests issued by Holdco or the proceeds of New Affiliated
                    Equity to the extent allocated solely to this purpose,  with
                    the value of such Equity  Interests and such New  Affiliated
                    Equity being excluded from such monetary limitations;

provided  that  each of the  foregoing  Acquisitions  and  Investments  shall be
subject to the following conditions:

                    (x) no Default or Event of Default  shall then exist  before
or after giving effect to any such Acquisition or Investment;

                    (y)  each  time  that  the  Borrower   and  the   Designated
Subsidiaries  shall complete any single Acquisition or Investment or a series of
Acquisitions or Investments  (whether related or unrelated)  having an aggregate
Purchase Price with respect to all such  Acquisitions and Investments of greater
than or  equal  to  $100,000,000  (with  this  basket  being  reset  to zero (0)
following each delivery of Projections required  hereunder),  the Borrower shall
provide to the Arrangers and the Lenders revised Projections assuming

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consummation  of all  Acquisitions  and  Investments  included  in  such  set of
Acquisitions  and Investments and  demonstrating  pro forma  compliance with the
Financial Covenants through the Final Maturity Date; and

                    (z)  with  respect  to  any  Acquisition  structured  as  an
exchange  or swap of  Tower  Assets,  the cash  outlay  by the  Borrower  or the
applicable  Designated Subsidiary for such Acquisition must be within the dollar
limitations set forth with respect to such Acquisition in this Section 8.5(v);

                    (vi) the Borrower  and the  Designated  Subsidiaries  (other
than TAS) may acquire  and  construct  Tower and Tower  Sites  without an anchor
tenant under contract,  so long as the aggregate  Investment for such Towers and
Tower Sites is at all times less than $15,000,000;  provided,  however,  that if
the Borrower or the applicable  Designated Subsidiary shall enter into a binding
contract with an anchor tenant with respect to any such Tower or Tower Site, the
book  value of the  Investment  of the  Borrower  or the  applicable  Designated
Subsidiary  in such Tower or Tower Site shall be  thereafter  excluded  from the
Investments subject to the $15,000,000 limitation provided for herein;

                    (vii) so long as no Default or Event of Default  then exists
or would be caused  thereby,  subject to  compliance  with Sections 6.9 and 6.15
hereof,  the Borrower may consummate each of (A) the SBC Transaction and (B) the
Airtouch Acquisition;

                    (viii) so long as no Default or Event of Default then exists
or would be caused thereby,  (A) subject to the consent of the Majority Lenders,
the  Borrower  may  transfer to Holdco all or a portion of the Equity  Interests
held directly or  indirectly  by the Borrower in each of the Persons  comprising
SpectraSite Mexico pursuant to Section 6.17(c) hereof;  provided,  however, that
so long as the  investments  by the  Borrower  and the  Designated  Subsidiaries
(other  than  the  Domestic  SpectraSite  Mexico  Subsidiaries  and the  Foreign
SpectraSite Mexico Subsidiaries) in the Domestic SpectraSite Mexico Subsidiaries
and the Foreign SpectraSite Mexico Subsidiaries to be transferred have been less
than  $25,000,000 in the aggregate  since the Agreement Date, the consent of the
Majority  Lenders or any other Credit Parties shall not be required for any such
transfer,  and (B) the  Borrower  may transfer to Holdco all or a portion of the
Equity  Interests  held  directly or  indirectly  by the  Borrower in any of the
Unrestricted Subsidiaries or the Unrestricted Investments;

                    (ix) the Borrower may issue Permitted High-Yield Securities;
and

                    (x) subject to compliance with Sections 6.9 and 6.15 hereof,
the Borrower and the Designated Subsidiaries may form Subsidiaries.

          Section 8.6 Limitation on Guaranties.  Neither Holdco nor the Borrower
shall, and the Borrower shall cause each of the Designated  Subsidiaries not to,
at any time  Guaranty,  assume,  be  obligated  with respect to, or permit to be
outstanding  any Guaranty of, any  obligation of any other Person other than (a)
under any of the Loan Documents or as permitted under Section 8.1 hereof,  (b) a
guaranty by endorsement of negotiable instruments for collection in the ordinary
course of business,  (c) contingent  obligations incurred in the ordinary course
of  business  with  respect  to  surety  and  appeal  bonds,   performance   and
return-of-money  bonds and other similar obligations,  (d) a guaranty by Holdco,
the Borrower or any of the Designated Subsidiaries of the obligations of the

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Borrower  or any of the  Restricted  Subsidiaries,  and (e) a guaranty by Holdco
permitted under the Holdco Notes Indentures.

          Section 8.7 Restricted Payments and Purchases. The Borrower shall not,
and  shall  cause  each  of the  Designated  Subsidiaries  not to,  directly  or
indirectly declare or make any Restricted Payment or Restricted Purchase, except
that,  so long as no  Default or Event of Default  then  exists or would  result
therefrom, any of the Designated Subsidiaries may make pro rata distributions to
holders of Equity  Interests in such Designated  Subsidiaries,  and the Borrower
may (a) subject to the consent of the Majority  Lenders,  transfer to Holdco all
or a portion of the Equity Interests held directly or indirectly by the Borrower
in each of the Persons comprising SpectraSite Mexico pursuant to Section 6.17(c)
hereof;  provided,  however, that so long as the investments by the Borrower and
the  Designated   Subsidiaries  (other  than  the  Domestic  SpectraSite  Mexico
Subsidiaries and the Foreign  SpectraSite  Mexico  Subsidiaries) in the Domestic
SpectraSite Mexico  Subsidiaries and the Foreign SpectraSite Mexico Subsidiaries
to be transferred  have been less than  $25,000,000  in the aggregate  since the
Agreement Date, the consent of the Majority  Lenders or any other Credit Parties
shall not be required  for any such  transfer,  (b)  transfer to Holdco all or a
portion of the Equity  Interests  (or dividend  payments  made in respect of the
Equity  Interests)  held  directly or  indirectly by the Borrower in each of the
Unrestricted Subsidiaries or the Unrestricted  Investments,  (c) make Restricted
Payments to Holdco to enable Holdco to make the following payments when due: (i)
interest  payments  on the Holdco  Notes;  (ii) at any time  after the  Borrower
Leverage  Ratio  shall have been less than 4.50 to 1.00 for two (2)  consecutive
fiscal  quarters  before and after giving  effect to such  payment,  dividend or
interest  payments,  as applicable,  on Permitted  High-Yield  Securities issued
after the  Agreement  Date in  connection  with an Eligible  Debt Offering or an
Eligible  Equity  Offering,  in each case  following  expiration of any required
payment-in-kind  period  applicable  thereto;  (iii)  to the  extent  that  such
payments are required in the ordinary  course of business and relate directly to
the Borrower or any of the Designated Subsidiaries,  or to services provided for
or on behalf of the Borrower or any of the Designated Subsidiaries, payments, in
each  case  that  are  required  to be paid in cash,  when due of (A)  corporate
franchise fees and taxes actually owed by Holdco,  (B) legal and accounting fees
and  expenses  actually  incurred by Holdco,  (C) costs  incurred to comply with
Holdco's reporting obligations under federal or state laws,  including,  without
limitation,  reports filed with respect to the Securities  Act, the Exchange Act
or the respective  rules and  regulations  promulgated  thereunder and (D) other
customary  corporate overhead expenses;  (iv) payments of `Additional  Interest'
(as that term is defined in the Registration  Rights Agreements  entered into in
connection with the Holdco Notes) and any other  comparable  payments in respect
of other Permitted High-Yield Securities;  and (v) payments to repurchase Equity
Interests in Holdco owned by  employees,  officers and  directors of Holdco upon
their death, disability or termination of employment or service, in an aggregate
amount not to exceed  $10,000,000 during any year or $15,000,000 during the term
of this  Agreement,  and (d) make  dividend  payments  to holders  of  Permitted
High-Yield  Securities  of the  Borrower  following  expiration  of any required
payment-in-kind  period  applicable  thereto  at any  time  after  the  Borrower
Leverage  Ratio  shall have been less than 4.50 to 1.00 for two (2)  consecutive
fiscal quarters before and after giving effect to such payment.

          Section 8.8 Affiliate Transactions.  The Borrower shall not, and shall
cause  each of the  Designated  Subsidiaries  not to, at any time  engage in any
transaction  with an  Affiliate  (other  than the  Borrower or any of the wholly
owned Restricted Subsidiaries),  nor make an assignment or other transfer of any
of its Assets to any Affiliate (other than the Borrower or any of the wholly

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owned Restricted  Subsidiaries),  on terms less  advantageous  than would be the
case if such transaction had been effected with a non-Affiliate, except (a) with
respect to  Investments  and loans  permitted  under  Section  8.2(a);  (b) with
respect  to  the  transactions   contemplated  in  connection  with  the  Nextel
Acquisition  and the  Acquisition  of  additional  Towers from Nextel;  (c) with
respect  to the  transactions  contemplated  in  connection  with  the  Airtouch
Acquisition, the NTA Investment and the SBC Transaction; (d) with respect to the
Loans and other  transactions  contemplated by this Agreement and the other Loan
Documents;  and (e) with  respect to the  payment  of  customary  commercial  or
investment banking,  underwriting,  placement agent or financial advisor fees to
Affiliates of the Borrower for any such services rendered to the Borrower.

          Section  8.9  Corporate  Name;  Corporate  Structure;   Business.  The
Borrower shall not, and shall cause each of the Designated  Subsidiaries not to,
change its corporate name or corporate  structure  without giving the Collateral
Agent  thirty (30) days' (or such  shorter  period as may be  acceptable  to the
Collateral  Agent) prior written  notice of its intention to do so and complying
with all reasonable  requirements  of the Collateral  Agent in regard thereto or
(b)  engage in any  businesses  other  than the Tower  Operations  and the Other
Operations and activities related or incident thereto.

          Section 8.10  Negative  Pledge.  The Borrower  shall not,  directly or
indirectly,  and shall not permit any of the Designated  Subsidiaries  to, enter
into any  agreement  (other  than  the Loan  Documents)  with  any  Person  that
prohibits or  restricts or limits the ability of the Borrower or any  Designated
Subsidiary to create, incur, pledge, or suffer to exist any Lien upon any of its
respective Assets, or restricts the ability of any Designated Subsidiary to make
Restricted  Payments to the Borrower  except (a) any  encumbrance or restriction
that restricts in a customary  manner the subletting,  assignment or transfer of
any property or asset that is subject to a lease,  license or other  contract or
the assignment,  encumbrance or  hypothecation  of such lease,  license or other
contract;  (b) any limitation or restriction  contained in any Permitted Lien to
the extent such  limitation or restriction  restricts the imposition of Liens on
or the transfer of the property  subject to such  Permitted  Liens;  and (c) any
restriction imposed on assets subject to a Permitted  Disposition pursuant to an
agreement entered into in connection with such Permitted Disposition pending the
closing of such sale or disposition.

                         ARTICLE 9 - Financial Covenants


          Section 9.1 Borrower  Leverage Ratio. The Borrower shall not permit as
of the end of any fiscal quarter ended during the term of this Agreement,  or as
of the date of any Advance under this Agreement, the Borrower Leverage Ratio (if
applicable,  after giving effect to such Advance) to exceed the applicable ratio
for such date during the periods as set forth below:


               Quarters Ending:                                 Ratio:
               ---------------                                  -----

Agreement Date through June 30, 2002                         6.00 to 1.00

July 1, 2002 through December 31, 2002                       5.50 to 1.00

January 1, 2003 through June 30, 2003                        5.00 to 1.00

July 1, 2003 through December 31, 2003                       4.50 to 1.00

January 1, 2004 through December 31, 2004                    4.00 to 1.00

January 1, 2005 and thereafter                               3.50 to 1.00

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          Section 9.2 Borrower  Interest  Coverage Ratio. The Borrower shall not
permit  as of the  end of any  fiscal  quarter  ended  during  the  term of this
Agreement,  the  Borrower  Interest  Coverage  Ratio to be less  than the  ratio
specified below with respect to such fiscal quarter end:


               Quarters Ending:                                 Ratio:
               ---------------                                  -----

Agreement Date through June 30, 2003                         2.00 to 1.00

July 1, 2003 through December 31, 2003                       2.25 to 1.00

January 1, 2004 and thereafter                               2.75 to 1.00


          Section 9.3 Total  Interest  Coverage  Ratio.  The Borrower  shall not
permit  as of the  end of any  fiscal  quarter  ended  during  the  term of this
Agreement, the Total Interest Coverage Ratio to be less than the ratio specified
below with respect to such fiscal quarter end:


               Quarters Ending:                                 Ratio:
               ---------------                                  -----

Agreement Date through June 30, 2002                         1.15 to 1.00

July 1, 2002 through June 30, 2003                           1.25 to 1.00

July 1, 2003 through December 31, 2003                       1.50 to 1.00

January 1, 2004 through June 30, 2006                        1.75 to 1.00

July 1, 2006 and thereafter                                  2.00 to 1.00


          Section 9.4 Fixed Charge Coverage Ratio. The Borrower shall not permit
the Fixed  Charge  Coverage  Ratio,  as of the end of any fiscal  quarter  ended
during the term of this Agreement, to be less than 1.10 to 1.00.

                              ARTICLE 10 - Default


          Section 10.1 Events of Default. Each of the following shall constitute
an Event of Default  with  respect to the  Obligations,  whatever the reason for
such event and whether it shall be  voluntary or  involuntary  or be effected by
operation of law or pursuant to any judgment or order of any court or any order,
rule or regulation of any governmental or non-governmental body:

               (a) Any  representation  or warranty made under this Agreement or
any other Loan Document (other than any Mortgage) shall prove to be incorrect or
misleading  in any material  respect when made or deemed to be made  pursuant to
Section 5.2 hereof;

               (b)  (i)  The  Borrower  shall  default  in  the  payment  of any
principal of the Notes or the  Incremental  Facility Notes when due, or (ii) the
Borrower  shall  default in the payment of any  interest,  fees or other amounts
payable  to any of the Credit  Parties  when due and such  Default  shall not be
cured by payment in full of such amounts within three (3) days;

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               (c)  (i)  the  Borrower  shall  default  in  the  performance  or
observance  of any  agreement  or covenant  under  Section 7.4 or 7.5,  and such
default  shall not be cured  within the earlier of (A) a period of fifteen  (15)
days from the date the Borrower knew of the occurrence of such default, or (B) a
period of fifteen (15) days after written notice of such default is given to the
Borrower or (ii) the Borrower shall default in the  performance or observance of
any agreement or covenant under Article 7 (other than under Section 7.4 or 7.5),
Article 8 or Article 9;

               (d) The Borrower  shall default in the  performance or observance
of any other agreement or covenant  contained in this Agreement not specifically
referred to elsewhere in this Section 10.1, and such default, if curable,  shall
not be cured  within the  earlier  of (i) a period of thirty  (30) days from the
date the Borrower knew of the  occurrence  of such default,  or (ii) a period of
thirty (30) days after written notice of such default is given to the Borrower;

               (e)  There  shall  occur  any  default  in  the   performance  or
observance of any agreement or covenant  contained in any of the Loan  Documents
(other than this Agreement or any of the Mortgages) by the Borrower,  any of the
Designated Subsidiaries, Holdco or any other obligor thereunder, which shall not
be cured within the cure period, if any, set forth in such Loan Document;

               (f) There shall be entered and remain  unstayed a decree or order
for  relief  in  respect  of  Holdco,  the  Borrower  or any  of the  Borrower's
Subsidiaries  under  Title 11 of the United  States Code as now  constituted  or
hereafter  amended,  or any other applicable  Federal or state bankruptcy law or
other  similar  law, or the  appointment  of a receiver,  liquidator,  assignee,
trustee, custodian,  sequestrator or similar official of Holdco, the Borrower or
any  of the  Borrower's  Subsidiaries,  or of  any  substantial  part  of  their
respective properties,  or ordering the winding-up or liquidation of the affairs
of Holdco, the Borrower or any of the Borrower's Subsidiaries; or an involuntary
petition  shall be filed against  Holdco,  the Borrower or any of the Borrower's
Subsidiaries and a temporary stay entered,  and (i) such petition and stay shall
not be  diligently  contested,  or (ii)  such  petition  and stay  shall  remain
uncontroverted   for  a  period  of  ten  (10)  consecutive  days,  or  continue
undismissed for a period of sixty (60) consecutive days;

               (g)  Any of  Holdco,  the  Borrower  or  any  of  the  Borrower's
Subsidiaries shall file a petition, answer or consent seeking relief under Title
11 of the United States Code, as now  constituted or hereafter  amended,  or any
other  applicable  Federal or state  bankruptcy  law or other  similar  law,  or
Holdco, the Borrower or any of the Borrower's  Subsidiaries shall consent to the
institution of  proceedings  thereunder or to the filing of any such petition or
shall seek or consent to the  appointment or taking of possession of a receiver,
liquidator, assignee, trustee, custodian, sequestrator or other similar official
of  Holdco,  the  Borrower  or  any of the  Borrower's  Subsidiaries,  or of any
substantial part of their respective properties,  or Holdco, the Borrower or any
of the  Borrower's  Subsidiaries  shall fail  generally to pay their  respective
debts as they  become  due, or Holdco,  the  Borrower  or any of the  Borrower's
Subsidiaries shall take any action in furtherance of any such action;

               (h) One or more judgments (not paid or fully covered by insurance
as to which the relevant  insurance company has acknowledged  coverage) shall be
entered  against the  Borrower  or any of the  Designated  Subsidiaries  for the
payment of money which exceeds  $10,000,000  in the  aggregate,  or a warrant of
attachment or execution or similar process shall be issued or levied against

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property of the Borrower or any of the Designated  Subsidiaries which,  together
with  all  other  such  property  of the  Borrower  or  any  of  the  Designated
Subsidiaries subject to other such process,  exceeds in value $10,000,000 in the
aggregate,  and if,  within  thirty  (30) days  after the  entry,  issue or levy
thereof,  such  judgment,  warrant  or  process  shall  not  have  been  paid or
discharged or stayed  pending  appeal,  or if, within thirty (30) days after the
expiration of any such stay,  such  judgment,  warrant or process shall not have
been paid or discharged;

               (i) (i) There shall occur a Mortgage  Default,  (ii) any Mortgage
or any material  provision thereof shall at any time and for any reason cease to
be in full force and effect, or be declared by a court of competent jurisdiction
to be null and void, or a proceeding shall be commenced by Holdco, the Borrower,
any of the  Borrower's  Subsidiaries  or by any  Governmental  Authority  having
jurisdiction over the Borrower or any of the Designated Subsidiaries, seeking to
establish the invalidity or unenforceability  thereof (exclusive of questions of
interpretation  of any provision  thereof),  or (iii) any Mortgage shall for any
reason  fail or cease to create a valid and  first-priority  Lien on or Security
Interest in the Collateral in favor of the Collateral  Agent, for the benefit of
the Credit Parties,  purported to be covered  thereby,  subject to any Permitted
Lien, or any such perfected Lien or Security Interest in favor of the Collateral
Agent shall cease to be perfected;  provided that, with respect to any Mortgages
delivered  prior to the Agreement  Date,  the foregoing  shall only apply to the
extent applicable to Material Towers;

               (j)  There  shall  be  at  any  time  any  "accumulated   funding
deficiency,"  as defined in Section  302 of ERISA or in Section 412 of the Code,
with respect to any Plan maintained by the Borrower or any of its  Subsidiaries,
or  to  which  the  Borrower  or  any  of  its  Subsidiaries  has  any  material
liabilities, or any trust created thereunder; or a trustee shall be appointed by
a United  States  District  Court to  administer  any such  Plan;  or PBGC shall
institute  proceedings to terminate any such Plan; or the Borrower or any of its
Subsidiaries   shall  incur  any  liability  to  PBGC  in  connection  with  the
termination  of any such Plan; or any fiduciary of, or party in interest to, any
Plan or trust created under any Plan of the Borrower or any of its  Subsidiaries
shall engage in a "prohibited  transaction"  (as such term is defined in Section
406 of ERISA or Section  4975 of the Code) which would  subject the  Borrower or
any of its Subsidiaries to a material tax on "prohibited  transactions"  imposed
by Section 4975 of the Code;  or any  fiduciary of, or party in interest to, any
Plan or trust created under any Plan of the Borrower or any of its  Subsidiaries
shall engage in a breach of fiduciary responsibility or knowingly participate in
any violation of ERISA;  or any Plan of the Borrower or any of its  Subsidiaries
which is intended to qualify under Section 401(a) of the Code shall fail to meet
the qualification  requirements under such Code section,  or the Borrower or any
of the Designated Subsidiaries shall incur any withdrawal liability with respect
to any Multiemployer Plan, and, in each case, such event or condition,  together
with other such events or  conditions,  if any,  would be  reasonably  likely to
subject the Borrower and the Designated  Subsidiaries  to any tax,  liability or
penalty in excess of $10,000,000;

               (k) Any of the  Unrestricted  Subsidiaries  shall fail to pay and
discharge all material taxes, including, without limitation,  withholding taxes,
assessments  and  governmental  charges or levies required to be paid by them or
imposed upon them or their income or profits or upon any properties belonging to
them,  prior to the date on which penalties  attach  thereto,  but excluding any
taxes  that  are  being  diligently  contested  in  good  faith  by  appropriate
proceedings and for which reserves in conformity with GAAP have been set aside

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on the books of the appropriate Unrestricted Subsidiary, or shall fail to timely
file all material  information  returns required by federal,  state or local tax
authorities,  and in each case, such failure, together with other such failures,
if any,  would be reasonably  likely to subject the Borrower and the  Designated
Subsidiaries to any tax, liability or penalty in excess of $10,000,000;

               (l) There  shall occur any default  under any  mortgage,  deed to
secure debt, note, loan agreement,  indenture or other instrument of Holdco, the
Borrower  or any of the  Designated  Subsidiaries  evidencing  Funded Debt in an
amount in excess of $10,000,000,  which default would permit the acceleration of
such Funded Debt;

               (m) There shall occur any default which would permit acceleration
of the Indebtedness  evidenced  thereby under any of the Holdco Notes Indentures
or any Permitted  High-Yield  Securities (or documents evidencing or relating to
the issuance of any Permitted High-Yield Securities);

               (n)  There  shall  occur an "Event  of  Default"  as such term is
defined in the Nextel Subordinated Security Agreement,  or any default under the
Master Site Lease Agreement or the Nextel Partners Master Site Lease  Agreement,
if applicable, and as a result thereof Tower Sites equal to ten percent (10%) or
more of the  aggregate  number of Tower Sites then leased to the Nextel  Tenants
shall  cease to be leased  pursuant to the Master  Site Lease  Agreement  or, if
applicable, the Nextel Partners Master Site Lease Agreement;

               (o) There shall occur  events of default by STI under  Section 30
of the SBC Sublease in respect of more than  thirty-five (35) Tower Sites during
any consecutive two (2) year period or portion thereof;

               (p) The  Borrower and the  Designated  Subsidiaries  shall,  on a
consolidated basis, fail to own or lease at least that number of Towers equal to
ninety  percent  (90%) of the  Towers  owned or leased by them on the  Agreement
Date;

               (q) Any Security  Document  (other than any of the  Mortgages) or
          any Note or any other Loan Document or any material  provision thereof
shall at any time and for any reason  cease to be in full force and effect or be
declared  by a court  of  competent  jurisdiction  to be  null  and  void,  or a
proceeding  shall be commenced by Holdco,  the Borrower,  any of the  Borrower's
Subsidiaries  or by any  Governmental  Authority  having  jurisdiction  over the
Borrower  or  any of the  Designated  Subsidiaries,  seeking  to  establish  the
invalidity or unenforceability thereof (exclusive of questions of interpretation
of any  provision  thereof),  or Holdco,  the Borrower or any of the  Designated
Subsidiaries  shall deny that it has any liability or obligation for the payment
of principal or interest or other obligations  purported to be created under any
Loan Document;

               (r) Any Security Document (other than any of the Mortgages) shall
for any  reason  fail or cease to create a valid and first  priority  Lien on or
Security  Interest in the Collateral in favor of the Collateral  Agent,  for the
benefit of the Credit Parties,  purported to be covered thereby,  subject to any
Permitted Lien, or any such perfected Lien or Security  Interest in favor of the
Collateral Agent shall cease to be perfected; provided, however, that if, in the
reasonable judgment of the Administrative Agent, such failure is curable, no

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such Event of Default shall be deemed to have occurred if the Borrower, promptly
following  notice from the Collateral  Agent,  shall take such actions as may be
necessary to cure such failure or cessation; or

               (s) There shall occur any Change of Control.

     Section 10.2 Remedies.

               (a) If an Event of Default  specified in Section 10.1 (other than
an Event of  Default  under  Section  10.1(f)  or  Section  10.1(g))  shall have
occurred and shall be continuing,  the  Administrative  Agent, at the request of
the  Majority  Lenders,  shall  formally  declare  that an Event of Default  has
occurred and (i) terminate  the Revolving  Commitment,  any  obligations  of the
Swing Loan Lender to advance the Swing Loan  Committed  Amount and the Tranche A
Commitment, as applicable, and (ii) declare the principal of and interest on the
Loans and the Notes and all other amounts owed to the Credit  Parties under this
Agreement  and the Notes  and any  other  Obligations  to be  forthwith  due and
payable without presentment, demand, protest or notice of any kind, all of which
are hereby expressly  waived,  anything in this Agreement or in the Notes or any
other  Loan  Document  to  the  contrary  notwithstanding,   and  the  Revolving
Commitment,  the  obligations of the Swing Loan Lender to advance the Swing Loan
Committed  Amount and the Tranche A Commitment,  as applicable,  shall thereupon
forthwith  terminate and all such amounts shall be immediately  due and payable,
and during the  continuance of an Event of Default  specified in Section 10.1(b)
hereof,  the  principal  amount of the Loans  outstanding  hereunder  shall bear
interest at the Default Rate applicable thereto.

               (b) Upon the  occurrence  and  continuance of an Event of Default
specified in Section  10.1(f) or Section  10.1(g),  all principal,  interest and
other  amounts due  hereunder  and under the Notes,  and all other  Obligations,
shall  thereupon  and  concurrently  therewith  become due and  payable  and the
Revolving  Commitment,  the  obligations of the Swing Loan Lender to advance the
Swing Loan Committed Amount and the Tranche A Commitment,  as applicable,  shall
forthwith terminate and the principal amount of the Loans outstanding  hereunder
shall bear  interest at the Default  Rate  applicable  thereto,  all without any
action by the Agents,  the Lenders or the Majority  Lenders or any of them,  and
without presentment,  demand,  protest or other notice of any kind, all of which
are expressly waived,  anything in this Agreement or in the other Loan Documents
to the contrary notwithstanding.

               (c) With  respect  to any  outstanding  Letters  of  Credit  with
respect to which  presentment  for honor shall not have  occurred at the time of
any acceleration of the Obligations  pursuant to this Section 10.2, the Borrower
shall (i) upon the occurrence and  continuance of an Event of Default  specified
in Section 10.1(f) or Section 10.1(g),  concurrently therewith, or (ii) upon the
occurrence and  continuance of any other Event of Default,  promptly upon demand
by any Issuing Bank, pay to such Issuing Bank an amount equal to one hundred two
percent (102%) of the aggregate  undrawn and unexpired  amount of each Letter of
Credit issued by such Issuing Bank then outstanding,  which cash will be held as
cash  collateral by such Issuing Bank for the L/C Obligations and applied to the
payment  of drafts  drawn  under such  Letters of Credit and the unused  portion
thereof  after such  Letters of Credit  shall have  expired or been fully  drawn
upon,  if any,  shall be applied to repay  other  Obligations  hereunder  in the
manner set forth in Section 10.3 hereof.

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               (d) Upon acceleration of the Notes, as provided in subsection (a)
or (b) of this Section  10.2,  the Agents and the Lenders  shall have all of the
post-default  rights  granted to them, or any of them,  under the Loan Documents
and under Applicable Law.

               (e) Upon acceleration of the Notes, as provided in subsection (a)
or (b) of this Section 10.2, the Collateral  Agent, upon request of the Majority
Lenders,  shall  have  the  right  to the  appointment  of a  receiver  for  the
properties and assets of the Borrower and the Designated  Subsidiaries,  both to
operate and to sell such properties and assets, and the Borrower, for itself and
on behalf of the Designated Subsidiaries, hereby consents to such right and such
appointment  and hereby  waives any  objection  the  Borrower or any  Designated
Subsidiary may have thereto or the right to have a bond or other security posted
by the  Collateral  Agent,  on  behalf  of the  Credit  Parties,  in  connection
therewith.

               (f) The  rights  and  remedies  of the  Agents  and  the  Lenders
hereunder shall be cumulative and not exclusive.

          Section  10.3  Payments   Subsequent  to   Acceleration  or  Maturity.
Subsequent  to the  acceleration  of the Loans under  Section 10.2 hereof or the
Final Maturity Date (or, if applicable, the Incremental Facility Maturity Date),
payments and prepayments  under this Agreement made to any of the Credit Parties
or otherwise received by any of such Persons (from realization on Collateral for
the Obligations or otherwise) shall be paid over to the Administrative Agent (if
necessary) and distributed by the Administrative Agent as follows: FIRST, to the
reasonable  costs  and  expenses,  if  any,  incurred  in  connection  with  the
collection  of such payment or prepayment  including,  without  limitation,  any
reasonable  costs  incurred  by any of  them  in  connection  with  the  sale or
disposition of any Collateral for the Obligations; SECOND, to the Credit Parties
for any fees  hereunder  or under any of the other Loan  Documents  then due and
payable;  THIRD, to the Lenders pro rata on the basis of their respective unpaid
principal amounts,  to the payment of any unpaid interest which may have accrued
on the  Obligations;  FOURTH,  to the Lenders pro rata until all Loans have been
paid in full (and, for purposes of this clause, obligations under Interest Hedge
Agreements with any of the Lenders shall be deemed to be Loans and shall be paid
on a pro rata basis with the Loans); FIFTH, to the Lenders pro rata on the basis
of  their  respective  unpaid  amounts,  to  the  payment  of any  other  unpaid
Obligations;  SIXTH,  to damages  incurred by any Credit  Party by reason of any
breach hereof or of any other Loan Document;  and SEVENTH,  upon satisfaction in
full of all  Obligations,  to the  Borrower  or as  otherwise  required  by law.
Notwithstanding  the foregoing,  each Lender may allocate amounts received by it
pursuant to this Section 10.3 in its discretion to the various  Obligations held
by it.

          Section 10.4 Remedies with Respect to FCC Authorizations. In the event
that the Borrower or the Designated  Subsidiaries should hold any authorizations
issued by the FCC, then  notwithstanding  anything to the contrary  contained in
this Agreement or any of the Loan Documents,  the Lenders and their agents shall
not take any action  pursuant to this  Agreement  or the Loan  Documents,  which
would  constitute or result in any assignment of any FCC  authorizations  or any
transfer of control of the holder of any FCC authorization if such assignment or
transfer  of control  would  require  under then  existing  law  (including  the
Communications  Act) the prior approval of the FCC, without first obtaining such
approval.  Notwithstanding the occurrence of an Event of Default,  voting rights
in any of the Collateral,  to the extent but only to the extent, it includes the
FCC   authorizations,   shall  remain  with  the  Borrower  or  the   Designated
Subsidiaries unless and until all required consents of the FCC shall have been

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obtained for the exercise of voting rights by another  entity,  and prior to the
exercise of voting  rights by a  purchaser  of such  Collateral  at a private or
public sale,  the prior consent of the FCC pursuant to 47 U.S.C.  Section 310(d)
or any  successor  provision of Applicable  Law will, if required,  be obtained.
Upon the  occurrence  and during the  continuance  of an Event of  Default,  the
Borrower and the  Designated  Subsidiaries  agree to cooperate  with each of the
Credit Parties and their agents in the preparation,  execution and filing of any
applications  and other  documents  and providing  any  information  that may be
necessary  or helpful in  obtaining  any  consent  of the FCC  required  for the
exercise of the Credit Parties' rights under the Loan Documents.

                             ARTICLE 11 - The Agents


          Section 11.1  Appointment and  Authorization.  Subject only to Section
11.13 hereof,  each of the Lenders hereby  irrevocably  appoints and authorizes,
and hereby agrees that it will require any  transferee of any of its interest in
its Loans and in its Notes  irrevocably  to appoint and  authorize,  each of the
Agents to take such  actions  as its agent on its behalf  and to  exercise  such
powers  hereunder  and under the  Security  Documents  as are  delegated to such
Agents by the terms hereof and thereof, together with such powers of such Agents
as are  reasonably  incidental  thereto.  None of the  Agents  nor any of  their
respective  directors,  officers,  employees  or agents  shall be liable for any
action  taken or omitted to be taken by it or them  hereunder  or in  connection
herewith,  except for its or their own gross  negligence or willful  misconduct.
Each of the Credit Parties hereby  authorizes the Collateral Agent to enter into
Non-Disturbance  Agreements  with  tenants  leasing  space on any Tower from the
Borrower or any of the Designated Subsidiaries.

          Section 11.2 Interest Holders.  The Administrative Agent and the other
Agents may treat each Lender,  or the Person designated in the last notice filed
with the  Administrative  Agent under this Section 11.2, as the holder of all of
the interests of such Lender in its Loans and in its Note or Notes until written
notice of transfer,  signed by such Lender (or the Person designated in the last
notice filed with the Administrative Agent) and by the Person designated in such
written  notice  of  transfer,  in  form  and  substance   satisfactory  to  the
Administrative Agent, shall have been filed with the Administrative Agent.

          Section 11.3 Consultation with Counsel.  The Administrative  Agent and
the  Collateral  Agent may consult with Paul,  Hastings,  Janofsky & Walker LLP,
special counsel to the  Administrative  Agent and the Collateral  Agent, or with
other  legal  counsel  selected  by them and shall not be liable  for any action
taken or suffered by them in good faith in consultation with such counsel, or at
the  direction  of the  Majority  Lenders  and in  reasonable  reliance  on such
consultations or direction.

          Section 11.4 Documents.  None of the Agents shall be under any duty to
examine,  inquire into, or pass upon the validity,  effectiveness or genuineness
of this Agreement,  any Note, any other Loan Document,  or any other instrument,
document or communication  furnished pursuant hereto or in connection  herewith,
and each of the Agents  shall be entitled  to assume  (absent  knowledge  to the
contrary) that they are valid,  effective and genuine,  have been signed or sent
by the proper parties and are what they purport to be.

          Section 11.5 Agents'  Affiliates.  With respect to the Commitments and
the Loans, the Agents and their respective Affiliates shall have the same rights
and powers hereunder and under the other Loan Documents as any other Lender, and
Affiliates of any of the Agents may accept deposits from, lend money to and

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generally engage in any kind of business with Holdco,  the Borrower,  any of the
Borrower's  Subsidiaries  or any  Affiliates of, or Persons doing business with,
the  Borrower,  as if they were not  affiliated  with such Agent and without any
obligation to account therefor.

          Section 11.6  Responsibility of the Agents. The duties and obligations
of each of the Agents under this  Agreement and the Security  Documents are only
those expressly set forth in this Agreement and the Security Documents.  Each of
the Agents  shall be  entitled to assume  that no Default  has  occurred  and is
continuing unless it has actual knowledge, or has been notified by the Borrower,
of such  fact,  or has been  notified  by a Lender in writing  that such  Lender
considers that a Default has occurred and is  continuing,  and such Lender shall
specify in detail the nature  thereof in  writing.  None of the Agents  shall be
liable  hereunder for any action taken or omitted to be taken except for its own
gross negligence or willful misconduct.  The Administrative  Agent shall provide
promptly  each of the Lenders with copies of such  documents  received  from the
Borrower as such Lender may reasonably request.

          Section 11.7 Security  Documents.  The Collateral Agent, as collateral
agent hereunder and under the Security Documents, is hereby authorized to act on
behalf  of the  Lenders  in its  own  capacity  and  through  other  agents  and
sub-agents appointed by it with due care, under the Security Documents, provided
that,  unless  otherwise  expressly  provided in this Agreement,  the Collateral
Agent  shall  not  agree  to the  release  of any  Collateral,  or any  property
encumbered by any mortgage,  pledge or security  interests  except in compliance
with the terms and conditions of this Agreement.  In connection with its role as
secured party with respect to the Collateral  hereunder,  the  Collateral  Agent
shall act as collateral agent for itself and for the benefit of the Lenders, and
such role as collateral  agent shall be disclosed on all  appropriate  accounts,
certificates, filings, mortgages, and other collateral documentation.

          Section 11.8 Action by the Agents.

               (a) Each of the Agents  shall be entitled  to use its  discretion
with respect to exercising or refraining from exercising any rights which may be
vested in it by, and with respect to taking or refraining from taking any action
or actions which it may be able to take under or in respect of, this  Agreement,
unless such Agent shall have been instructed by the Majority Lenders to exercise
or refrain  from  exercising  such rights or to take or refrain from taking such
action;  provided  that the  Administrative  Agent shall not exercise any rights
under Section 10.2(a) of this Agreement  except upon the request of the Majority
Lenders.  None of the Agents  shall incur any  liability  under or in respect of
this Agreement with respect to anything which it may do or refrain from doing in
the reasonable  exercise of its judgment or which may seem to it to be necessary
or desirable in the  circumstances  for the  protection  of the interests of the
Lenders,  except for its gross negligence or willful  misconduct,  or conduct in
breach of this  Agreement as  determined by a final,  non-appealable  order of a
court having jurisdiction over the subject matter.

               (b) None of the Agents  shall be liable to the  Lenders or to any
Lender in acting or  refraining  from acting  under this  Agreement or any other
Loan Document in accordance with the  instructions  of the Majority  Lenders (or
all of the Lenders where expressly  required by this Agreement),  and any action
taken or failure to act  pursuant to such  instructions  shall be binding on all
Lenders.

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     Section  11.9 Notice of Default or Event of Default.  In the event that any
Agent or any Lender shall acquire actual knowledge, or shall have been notified,
of any  Default  (other than  through a notice by one party  hereto to all other
parties),  such Agent or such Lender,  as the case may be, shall promptly notify
the Administrative  Agent and the Collateral Agent, and the Administrative Agent
and the  Collateral  Agent shall take such  action and assert such rights  under
this Agreement and the other Loan  Documents as the Majority  Lenders (or all of
the Lenders where expressly  required by this Agreement) direct, and neither the
Administrative  Agent nor the Collateral Agent shall be subject to any liability
by reason of its acting  pursuant to any such request.  If the Majority  Lenders
shall fail to request the  Administrative  Agent or the Collateral Agent to take
action or to assert rights under this Agreement in respect of any Default within
ten (10) days after their receipt of the notice of any Default from any Agent or
any Lender, or shall request  inconsistent  action with respect to such Default,
the Administrative Agent and the Collateral Agent may, but shall not be required
to, take such action and assert such rights  (other than rights under Article 10
hereof) as they deem in their  discretion to be advisable for the  protection of
the  Lenders,   except  that,  if  the  Majority  Lenders  have  instructed  the
Administrative  Agent or the Collateral  Agent not to take such action or assert
such right, in no event shall the Administrative  Agent or the Collateral Agent,
as applicable, act contrary to such instructions.

     Section 11.10 Responsibility Disclaimed.  None of the Agents shall be under
any liability or responsibility whatsoever as an Agent:

          (a) To the  Borrower  or any  other  Person  as a  consequence  of any
failure or delay in  performance  by or any breach  by, the  Lenders,  or any of
them, of any of its or their obligations under this Agreement;

          (b) To the Lenders, or any of them, as a consequence of any failure or
delay in performance  by, or any breach by, (i) Holdco or the Borrower of any of
their respective  obligations  under this Agreement or the Notes, as applicable,
or any other Loan Document,  or (ii) any Subsidiary of the Borrower or any other
obligor under any other Loan Document; or

          (c)  To  the   Lenders,   or  any  of   them,   for  any   statements,
representations  or  warranties  in  this  Agreement,   or  any  other  document
contemplated  by this Agreement or any other Loan Document,  or any  information
provided  pursuant  to this  Agreement,  any other Loan  Document,  or any other
document  contemplated  by this Agreement,  or for the validity,  effectiveness,
enforceability  or  sufficiency  of this  Agreement,  the Notes,  any other Loan
Document, or any other document contemplated by this Agreement.

     Section 11.11  Indemnification.  The Lenders agree to indemnify each of the
Administrative  Agent and the Collateral  Agent (to the extent not reimbursed by
the Borrower),  pro rata in accordance with their respective  Commitment Ratios,
from  and  against  any and  all  liabilities,  losses,  damages,  actions,  and
reasonable  fees and  expenses  of  counsel  (as  such  fees  and  expenses  are
incurred),  or  disbursements  of any kind or  nature  whatsoever  which  may be
imposed  on,  incurred by or asserted  against the  Administrative  Agent or the
Collateral  Agent  in  any  way  relating  to or  arising  out of  its  role  as
Administrative  Agent  or  Collateral  Agent,  as the case  may be,  under  this
Agreement,  any other Loan Document,  or any other document contemplated by this
Agreement  or any action  taken or omitted  by the  Administrative  Agent or the
Collateral  Agent under this  Agreement,  any other Loan Document,  or any other
document contemplated by this Agreement in its role as Administrative Agent or

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Collateral  Agent,  as the case may be, except that none of the Lenders shall be
liable to the  Administrative  Agent or the Collateral  Agent for any portion of
such  liabilities,  losses,  damages,  actions,  reasonable fees and expenses of
counsel  or  disbursements  resulting  from  the  gross  negligence  or  willful
misconduct of the  Administrative  Agent or the Collateral Agent, as applicable,
as determined by a final,  non-appealable  order of a court having  jurisdiction
over the subject matter.

     Section 11.12 Credit Decision.  Each of the Lenders represents and warrants
to each other Credit Party that:

          (a) In making its  decision to enter into this  Agreement  and to make
its Advances it has independently taken whatever steps it considers necessary to
evaluate the  financial  condition  and affairs of Holdco,  the Borrower and the
Borrower's Subsidiaries and that it has made an independent credit judgment, and
that it has not relied upon any other Credit Party or upon information  provided
by any Agent (other than  information  provided to the Arrangers by the Borrower
and forwarded by the Arrangers to the Lenders); and

          (b) So long as any portion of the Obligations remains outstanding,  it
will continue to make its own independent  evaluation of the financial condition
and affairs of Holdco, the Borrower and the Borrower's Subsidiaries.

     Section 11.13 Successor  Agents.  Subject to the appointment and acceptance
of a  successor  Agent as  provided  below,  any Agent may resign at any time by
giving  written  notice  thereof to the Lenders and the Borrower.  Upon any such
resignation,  the Majority  Lenders  shall have the right to appoint a successor
Agent with,  so long as no Default or Event of Default then exists,  the consent
of the  Borrower.  If no  successor  Agent shall have been so  appointed  by the
Majority  Lenders  with,  so long as no Default or Event of Default then exists,
the consent of the Borrower,  and shall have accepted  such  appointment  within
thirty (30) days after the retiring Agent gives notice of resignation,  then the
retiring  Agent may, on behalf of the Lenders,  appoint a successor  Agent which
shall be any existing  Lender or a commercial  bank organized  under the laws of
the United  States of America or any  political  subdivision  thereof  which has
combined capital and reserves in excess of $500,000,000.  Upon the acceptance of
any  appointment as an Agent hereunder by a successor Agent such successor Agent
shall  thereupon  succeed  to and become  vested  with all the  rights,  powers,
privileges, duties and obligations of the retiring Agent, and the retiring Agent
shall be  discharged  from its  duties  and  obligations  hereunder.  After  any
retiring Agent's resignation  hereunder as Agent, the provisions of this Article
shall  continue  in effect for its  benefit in respect of any  actions  taken or
omitted to be taken by it while it was acting as an Agent. The resignation of an
Agent may not take effect until a successor Agent is appointed.

     Section 11.14 Agents. None of the Lenders identified on the facing page of,
signature  pages of or elsewhere in this  Agreement as a  "co-agent,"  "managing
agent,"  "co-documentation  agent" or "syndication  agent" shall have any right,
power, obligation, liability, responsibility or duty under this Agreement or any
other Loan Document other than those applicable to all Lenders as such.  Without
limiting  the  foregoing,  none of the  Lenders so  identified  shall have or be
deemed to have any fiduciary  relationship  with any other  Lender.  Each Lender
acknowledges that it has not relied, and will not rely, on any of the Lenders so
identified  in deciding to enter into this  Agreement or any other Loan Document
or in taking or not taking action hereunder or thereunder.

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                      ARTICLE 12 - Change in Circumstances

                          Affecting Eurodollar Advances

     Section 12.1 Eurodollar Basis  Determination  Inadequate or Unfair. If with
respect to any proposed  Eurodollar  Advance for any Eurodollar  Advance Period,
the  Administrative  Agent determines after  consultation  with the Lenders that
deposits in Dollars (in the applicable  amount) are not being offered to each of
the Lenders in the  relevant  market for such  Eurodollar  Advance  Period,  the
Administrative Agent shall forthwith give notice thereof to the Borrower and the
Lenders,  whereupon  until the  circumstances  giving rise to such  situation no
longer exist, the obligations of any affected Lender to make Eurodollar Advances
shall be suspended.

     Section 12.2 Illegality.  If, after the Agreement Date, the adoption of any
Applicable  Law,  or any  change  in  any  Applicable  Law,  or  any  change  in
interpretation or administration thereof by any Governmental Authority,  central
bank or comparable  agency  charged with the  interpretation  or  administration
thereof,  or compliance by any Lender with any directive  (whether or not having
the force of law) of any such  authority,  central  bank or  comparable  agency,
shall make it unlawful or  impossible  for any Lender to make,  maintain or fund
Eurodollar Advances,  such Lender shall so notify the Administrative  Agent, and
the  Administrative  Agent  shall  forthwith  give  notice  thereof to the other
Lenders and the Borrower.  Before giving any notice to the Administrative  Agent
pursuant to this Section 12.2, such Lender shall  designate a different  lending
office if such  designation  will avoid the need for giving such notice and will
not,  in  the  sole   judgment  of  such   Lender,   be   otherwise   materially
disadvantageous  to such Lender.  Upon  receipt of such notice,  notwithstanding
anything  contained in Article 2 hereof,  the  Borrower  shall repay in full the
then  outstanding  principal  amount of each Eurodollar  Advance of such Lender,
together with accrued  interest  thereon and any  reimbursement  required  under
Section 2.10 hereof,  on either (a) the last day of the then current  Eurodollar
Advance Period  applicable to such affected  Eurodollar  Advances if such Lender
may lawfully continue to maintain and fund such Eurodollar  Advances to such day
or (b) immediately if such Lender may not lawfully continue to fund and maintain
such affected Eurodollar  Advances to such day.  Concurrently with repaying each
affected Eurodollar Advance of such Lender,  notwithstanding  anything contained
in Article 2 or Article 4 hereof,  the  Borrower  may borrow a Base Rate Advance
from such Lender, and such Lender shall make such Advance,  if so requested,  in
an amount such that the  outstanding  principal  amount of the Note held by such
Lender shall equal the  outstanding  principal  amount of such Note  immediately
prior to such repayment.

     Section 12.3 Increased Costs.

          (a) If, after the Agreement  Date, the adoption of any Applicable Law,
or any  change  in any  Applicable  Law,  or any  interpretation  or  change  in
interpretation or administration thereof by any Governmental Authority,  central
bank or comparable  agency  charged with the  interpretation  or  administration
thereof or compliance  by any Lender with any  directive  (whether or not having
the force of law) of any such authority, central bank or comparable agency:

               (i) shall  subject  any Lender to any tax,  duty or other  charge
with respect to its obligation to make Eurodollar Advances, or shall change the

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basis of taxation of payments to any Lender of the  principal  of or interest on
its  Eurodollar  Advances  or in  respect  of any other  amounts  due under this
Agreement,  in respect of its  Eurodollar  Advances  or its  obligation  to make
Eurodollar  Advances (except for changes in the rate or method of calculation of
tax on the overall net income of such Lender); or

               (ii)  shall  impose,   modify  or  deem  applicable  any  reserve
(including,  without  limitation,  any imposed by the Board of  Governors of the
Federal Reserve System,  but excluding any included in an applicable  Eurodollar
Reserve  Percentage),  special deposit,  capital  adequacy,  assessment or other
requirement or condition against assets of, deposits with or for the account of,
or  commitments  or credit  extended  by, any  Lender in  respect of  Eurodollar
Advances or shall impose on any Lender or the London interbank  borrowing market
any other condition  affecting its obligation to make Eurodollar Advances or its
Eurodollar Advances;

and the result of any of the foregoing is to increase the cost to such Lender of
making or maintaining any such Eurodollar  Advances,  or to reduce the amount of
any sum received or receivable by such Lender under this  Agreement or under its
Note with  respect  thereto,  then,  within  five (5) days after  demand by such
Lender,  the  Borrower  agrees to pay to such Lender such  additional  amount or
amounts as will  compensate  such  Lender for such  increased  costs;  provided,
however,  that  notwithstanding  the  foregoing,  the  Borrower  shall  have  no
obligation  to make any such payment in respect of any such costs  incurred more
than  ninety (90) days prior to its  receipt of notice  from such  Lender.  Each
Lender will  promptly  notify the Borrower and the  Administrative  Agent of any
event of which it has  knowledge,  occurring  after the date hereof,  which will
entitle  such  Lender to  compensation  pursuant to this  Section  12.3 and will
designate a different  lending  office if such  designation  will avoid the need
for,  or reduce the  amount  of,  such  compensation  and will not,  in the sole
judgment of such Lender, be otherwise disadvantageous to such Lender.

               (b) Any Lender  claiming  compensation  under this  Section  12.3
shall  provide  the  Borrower  with a  written  certificate  setting  forth  the
additional  amount  or  amounts  to be paid  to it  hereunder  and  calculations
therefor in reasonable  detail.  Such  certificate  shall be conclusive,  absent
manifest error. In determining  such amount,  such Lender may use any reasonable
averaging and attribution methods. If any Lender demands compensation under this
Section  12.3,  the  Borrower  may at any time,  upon at least five (5) Business
Days'  prior  notice  to such  Lender,  prepay  in  full  the  then  outstanding
Eurodollar  Advances of such Lender,  together with accrued  interest thereon to
the date of prepayment, along with any reimbursement required under Section 2.10
hereof. Concurrently with prepaying such Eurodollar Advances and notwithstanding
anything to the  contrary  contained  in Article 2 or Section  4.2  hereof,  the
Borrower may borrow a Base Rate Advance from such Lender, and such Lender shall,
if so  requested,  make  such  Advance  in an amount  such that the  outstanding
principal  amount of the Note held by such Lender  shall  equal the  outstanding
principal amount of such Note immediately prior to such prepayment.

     Section 12.4 Effect On Other Advances.

          (a) If notice has been given  pursuant to Section  12.1,  12.2 or 12.3
suspending  the  obligation  of any  Lender  to  make  Eurodollar  Advances,  or
requiring Eurodollar Advances of any Lender to be converted,  repaid or prepaid,
then, unless and until the circumstances giving rise to such repayment no longer

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apply,  all Advances which would  otherwise be made by such Lender as Eurodollar
Advances affected shall be made instead as Base Rate Advances.

          (b) Within sixty (60) days after  written  notice  pursuant to Section
12.1, 12.2 or 12.3 by any Lender, the Borrower may, in its discretion, provide a
replacement  lender or lenders  for such  Lender,  which  replacement  lender or
lenders will be subject to the approval of the Administrative  Agent,  which, so
long as there exists no Default or Event of Default,  shall not be  unreasonably
withheld,  and the Administrative Agent, such Lender and the Borrower shall take
all necessary  actions to transfer the rights,  duties and  obligations  of such
Lender to such  replacement  lender or lenders within such sixty (60) day period
(including, without limitation, the payment in full of all Obligations hereunder
due to the Lender being replaced).

                           ARTICLE 13 - Miscellaneous


     Section 13.1 Notices.


          (a) Unless otherwise  specifically  provided  herein,  all notices and
other  communications  under this  Agreement  shall be in  writing  and shall be
deemed to have been given five (5) days after deposit in the mail, designated as
certified mail, return receipt requested,  postage-prepaid,  or one (1) Business
Day after being entrusted to a reputable  commercial overnight delivery service,
or when sent by telecopy addressed to the party to which such notice is directed
at its address  determined  as provided in this  Section  13.1.  All notices and
other  communications  under this Agreement shall be given to the parties hereto
at the following addresses:

               (i) If to the Borrower, to it at:

                           SpectraSite Communications, Inc.
                           100 Regency Forest Drive, Suite 400
                           Cary, North Carolina 27511
                           Attention: David Tomick and Steven Lilly
                          Telecopy No.: (919) 465-2325

                                 with a copy to:

                          Dow, Lohnes & Albertson, PLLC
                           1200 New Hampshire Avenue, N.W. Suite 800
                           Washington, D.C. 20036-6802
                           Attention: Timothy J. Kelley, Esq.
                          Telecopy No.: (202) 776-2222

               (ii) If to the  Administrative  Agent or the Collateral Agent, to
each of them at:

                           Canadian Imperial Bank of Commerce
                           425 Lexington Avenue
                            New York, New York 10017
                           Attention: Agency Services
                          Telecopy No.: (212) 856-3763

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                                 with a copy to:

                           Paul, Hastings, Janofsky & Walker LLP
                           600 Peachtree Street, Suite 2400
                           Atlanta, Georgia 30308-2222
                           Attention: Chris D. Molen, Esq.
                          Telecopy No.: (404) 815-2424

               (iii) If to any Lead Arranger, to each of them at:

                           Canadian Imperial Bank of Commerce
                           425 Lexington Avenue
                            New York, New York 10017
                            Attention: Keith Labbate
                          Telecopy No.: (212) 856-3558

                                     and to:

                           Credit Suisse First Boston
                              Eleven Madison Avenue
                            New York, New York 10010
                            Attention: Nancy Sheridan
                          Telecopy No.: (212) 325-8228

                                 with a copy to:

                           Paul, Hastings, Janofsky & Walker LLP
                           600 Peachtree Street, Suite 2400
                           Atlanta, Georgia 30308-2222
                           Attention: Chris D. Molen, Esq.
                          Telecopy No.: (404) 815-2424

               (iv) If to the Lenders, to them at the addresses set forth beside
their names on the Lender  Addendum with respect thereto or in an Assignment and
Assumption Agreement.

               (b) Copies  shall be provided  to Persons  other than the parties
hereto only in the case of notices under Article 10 hereof.

               (c) Any party  hereto  may change  the  address to which  notices
shall be  directed  under this  Section  13.1 by giving  ten (10) days'  written
notice of such change to the other parties.

     Section 13.2 Expenses. The Borrower shall promptly pay or reimburse:

               (a) all reasonable legal expenses of the Administrative Agent and
the Collateral Agent and all reasonable other out-of-pocket expenses of the Lead
Arrangers  incurred in connection with the preparation,  negotiation,  execution
and  delivery  of  this  Agreement  and  the  other  Loan  Documents,   and  the
transactions contemplated hereunder and thereunder and the making of the initial
Advance hereunder (whether or not such Advance is made), including, but not

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limited to, the reasonable fees and disbursements of Paul, Hastings,  Janofsky &
Walker LLP,  special  counsel for the  Administrative  Agent and the  Collateral
Agent;

               (b) all reasonable legal expenses of the Administrative Agent and
the Collateral Agent and all other reasonable out-of-pocket expenses of the Lead
Arrangers in connection with the syndication of the Loans;

               (c) all reasonable legal expenses of the Administrative Agent and
the Collateral Agent and all other reasonable out-of-pocket expenses of the Lead
Arrangers in connection with the administration of the transactions contemplated
in this Agreement or the other Loan Documents, and all other reasonable expenses
of the Lead Arrangers  customarily  reimbursed by borrowers for  transactions of
similar size, type and purpose as such transactions; and

               (d) from and after the  occurrence  of an Event of  Default,  all
reasonable  legal and other  out-of-pocket  expenses  of the  Arrangers  and the
Lenders  incurred  in  connection  with any  restructuring  or "work out" of, or
Insolvency  Proceeding  of Holdco,  the  Borrower or any  Designated  Subsidiary
relating to, the  transactions  contemplated by this Agreement or the other Loan
Documents,  and the  preparation,  negotiation,  execution  and  delivery of any
waiver,  amendment or consent by the Arrangers and the Lenders  relating to this
Agreement or the other Loan Documents,  including,  but not limited to, the fees
and  disbursements of any experts,  agents or consultants and of counsel for the
Administrative  Agent and the Collateral  Agent,  and any exercise by any of the
Arrangers  or the  Lenders of their  respective  remedies  provided  for in this
Agreement or the other Loan Documents.

     Section 13.3 Waivers. The rights and remedies of the Agents and the Lenders
under this  Agreement and the other Loan  Documents  shall be cumulative and not
exclusive of any rights or remedies which they would  otherwise have. No failure
or delay by the Agents, the Majority Lenders or the Lenders,  or any of them, in
exercising any right shall operate as a waiver of such right. The Agents and the
Lenders  expressly reserve the right to require strict compliance with the terms
of this  Agreement  in  connection  with any future  funding of a request for an
Advance.  In the event the Lenders  decide to fund an Advance at a time when the
Borrower  is not in strict  compliance  with the terms of this  Agreement,  such
decision by the Lenders shall not be deemed to constitute an  undertaking by the
Lenders to fund any further  Advances  or to preclude  the Lenders or the Agents
from exercising any rights  available to them under the Loan Documents or at law
or equity.  Any waiver or indulgence granted by the Agents, the Majority Lenders
or Lenders shall not constitute a modification of this Agreement,  except to the
extent expressly  provided in such waiver or indulgence,  or constitute a course
of  dealing  at  variance  with the terms of this  Agreement  such as to require
further notice of their intent to require strict  adherence to the terms of this
Agreement in the future.

     Section 13.4  Set-Off.  In addition to any rights now or hereafter  granted
under  Applicable Law and not by way of limitation of any such rights,  upon the
occurrence  of an Event of  Default  and during the  continuation  thereof,  the
Agents and the Lenders are hereby  authorized  by Holdco and the Borrower at any
time or from time to time,  without  notice to Holdco,  the  Borrower  or to any
other Person,  any such notice being hereby expressly  waived, to set-off and to
appropriate  and to apply any and all  deposits  (general  or  special,  time or
demand, including, but not limited to, Indebtedness evidenced by certificates of
deposit,  in each case whether matured or unmatured) and any other  Indebtedness
at any time held or owing by any Lender or any Agent to or for the credit or the

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account of Holdco,  the Borrower or any of the Designated  Subsidiaries  against
and on account of the  Obligations  irrespective  of whether (a) the Lenders and
the  Agents,  or any of them,  shall have made any demand  hereunder  or (b) the
Administrative  Agent shall have  declared the  principal of and interest on the
Loans and other  amounts due  hereunder  to be due and payable as  permitted  by
Section  10.2  hereof  and  although  all or any of such  Obligations  shall  be
contingent or unmatured. The Agent or Lender which has effected such set-off and
application of proceeds shall endeavor to promptly notify the Borrower  thereof,
but the  failure  to give such  notice  shall not affect  the  validity  of such
set-off or application.  Upon direction by the  Administrative  Agent,  with the
consent of the Majority  Lenders,  each Lender holding  deposits of Holdco,  the
Borrower or any of the Designated Subsidiaries shall exercise its set-off rights
as so directed.

     Section 13.5 Successors and Assigns; Participations and Assignments.

          (a) The provisions of this  Agreement  shall be binding upon and inure
to the  benefit  of  Holdco,  the  Borrower  and the  Credit  Parties  and their
respective  successors and assigns,  except that neither the Borrower nor Holdco
may assign or transfer  any of its rights or  obligations  under this  Agreement
without the prior written  consent of each Lender (and any attempted  assignment
or transfer by Holdco or the Borrower  without  such  consent  shall be null and
void).  Nothing in this Agreement,  expressed or implied,  shall be construed to
confer  upon  any  Person  (other  than the  parties  hereto,  their  respective
successors and assigns and, to the extent  expressly  contemplated  hereby,  the
Affiliates of each of the Credit Parties) any legal or equitable  right,  remedy
or claim under or by reason of this Agreement.

          (b) Any Lender  (other than the Swing Loan  Lender)  may,  without the
consent of the Borrower or the Administrative Agent, at any time sell, to one or
more banks or other entities ("Participants")  participating interests in all or
a portion of the rights and  obligations  of such  Lender  under this  Agreement
(including,  without  limitation,  all or a portion of such Lender's Loans,  L/C
Obligations and  Commitments  outstanding  hereunder).  In the event of any such
sale by a Lender of a participating interest to a Participant, (i) such Lender's
obligations  under this Agreement to the other parties to this  Agreement  shall
remain  unchanged,  (ii) such Lender shall  remain  solely  responsible  for the
performance thereof,  (iii) such Lender shall remain the holder of any such Loan
for all purposes under this Agreement and the other Loan Documents, and (iv) the
Borrower and the other Credit Parties shall continue to deal solely and directly
with such Lender in connection with such Lender's  rights and obligations  under
this  Agreement  and the other Loan  Documents.  No Lender  shall be entitled to
create in favor of any Participant,  in the participation  agreement pursuant to
which such Participant's  participating  interest shall be created or otherwise,
any  right to vote  on,  consent  to or  approve  any  matter  relating  to this
Agreement  or any other Loan  Document  except for those  matters  specified  as
requiring  the  consent of all Lenders in Section  13.12  hereof.  The  Borrower
agrees  that upon the  occurrence  and  during  the  continuance  of an Event of
Default,  each Participant  shall, to the maximum extent permitted by Applicable
Law,  be deemed to have the right of set-off  in  respect  of its  participating
interest  in amounts  owing  under this  Agreement  to the same extent as if the
amount of its participating interest were owing directly to it as a Lender under
this Agreement;  provided that, in purchasing such participating  interest, such
Participant  shall be  deemed  to have  agreed  to share  with the  Lenders  the
proceeds  thereof as provided in Section 2.11(b) as fully as if it were a Lender
hereunder.  The Borrower also agrees that each Participant  shall be entitled to
the  benefits of Section 2.12 and Article 12 of this  Agreement  with respect to
its participation in the Commitments and the Loans outstanding from time to time
as if it were a Lender; provided, further, that, in the case of Section 2.12,

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such Participant shall have complied with the requirements of such Section,  and
provided,  further, that no Participant shall be entitled to receive any greater
amount  pursuant to any such Section than the transferor  Lender would have been
entitled to receive in respect of the amount of the participation transferred by
such transferor Lender to such Participant had no such transfer occurred.

          (c) Any Lender (other than the Swing Loan Lender) may assign to one or
more Lenders or Affiliates of a Lender or Approved Funds of any Lender, or, with
the  consent  of the  Administrative  Agent and,  so long as no  Default  exists
hereunder,  the Borrower (which in each case shall not be unreasonably  withheld
or delayed),  to one or more other Eligible  Assignees,  all or a portion of its
rights and obligations under this Agreement (including,  without limitation, all
or a portion of such assigning  Lender's Loans,  L/C Obligations and Commitments
outstanding hereunder); provided that (i) except in the case of an assignment of
the entire remaining amount of the assigning Lender's Loans, L/C Obligations and
Commitments  hereunder  or in  the  case  of an  assignment  to a  Lender  or an
Affiliate  of a Lender or an  Approved  Fund of any  Lender,  (A) the  aggregate
amount of the Loans,  L/C Obligations  and  Commitments of the assigning  Lender
subject to each such  assignment  (determined  as of the date the Assignment and
Assumption  Agreement  with  respect  to such  assignment  is  delivered  to the
Administrative  Agent)  shall  not be less than  $2,500,000,  in the case of any
assignment of the Tranche B Loans, and $5,000,000, in the case of any assignment
of the other Loans, L/C Obligations and Commitments, and (B) after giving effect
to any such assignment,  the aggregate  amount of the assigning  Lender's Loans,
L/C Obligations  and Commitments  hereunder shall not be less than $2,500,000 in
the case of Tranche B Loans, and $5,000,000, in the case of the other Loans, L/C
Obligations and  Commitments,  unless each of the  Administrative  Agent and, so
long as no Default exists hereunder,  the Borrower  otherwise consent (each such
consent not to be unreasonably withheld or delayed, (ii) each partial assignment
shall be made as an assignment of a  proportionate  part of all of the assigning
Lender's rights and obligations under this Agreement with respect to the type of
Commitment  or Loan  being  assigned,  except  that this  clause  (ii) shall not
prohibit  any  Lender  from  assigning  all  or a  portion  of  its  rights  and
obligations  among  separate  types of  Commitments  or Loans on a non-pro  rata
basis, and (iii) the parties to each assignment shall execute and deliver to the
Administrative  Agent an Assignment  and  Assumption  Agreement  executed by the
applicable  Assignee and assigning  Lender (and, in the case of an Assignee that
is not then a Lender  or an  Affiliate  of a Lender  or an  Approved  Fund  with
respect to a Lender,  by the  Administrative  Agent  and,  so long as no Default
exists hereunder, the Borrower),  together with a processing and recordation fee
of $1,000 (except that in the case of assignments on the same day by a Lender to
more than one fund  managed or advised by the same  investment  advisor,  only a
single  $1,000 fee shall be payable for all such  assignments  by such Lender to
such funds),  and each Eligible  Assignee  shall  deliver to the  Administrative
Agent a  completed  administrative  questionnaire  in the form  required  by the
Administrative  Agent and all tax  forms,  certifications  and  other  documents
required to be provided by such Eligible Assignee as a Lender hereunder. Subject
to acceptance  and recording  thereof by the  Administrative  Agent  pursuant to
paragraph (d) of this Section 13.5,  from and after the effective date specified
in  each  Assignment  and  Assumption  Agreement,   (x)  the  Eligible  Assignee
thereunder  shall be a party hereto and, to the extent of the interest  assigned
under such Assignment and Assumption Agreement,  have the rights and obligations
of a Lender under this Agreement with respect to the Loans and  Commitments  set
forth in such Assignment and Assumption Agreement,  and (y) the assigning Lender
thereunder  shall, to the extent of the interest  assigned under such Assignment
and Assumption Agreement, be released from its obligations under this Agreement

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(and, in the case of an Assignment and Assumption  Agreement covering all of the
remaining  portion of an assigning  Lender's rights and  obligations  under this
Agreement,  such  assigning  Lender  shall cease to be a party  hereto but shall
nonetheless  continue  to be  entitled  to the  benefits  of, and subject to the
obligations set forth in, Sections 2.11, 2.13, 2.14, 6.10,  11.11, 12.3 and 13.2
hereof).  Any  assignment  or transfer by a Lender of its rights or  obligations
under this  Agreement  that does not comply with this Section  13.5(c)  shall be
treated  for  purposes  of  this  Agreement  as  a  sale  by  such  Lender  of a
participation in such rights and obligations in accordance with paragraph (b) of
this Section 13.5.

          (d)  The  Administrative  Agent,  on  behalf  of the  Borrower,  shall
maintain at the address of the Administrative Agent referred to in Section 13.1,
a copy  of  each  Assignment  and  Assumption  Agreement  delivered  to it and a
register (the  "Register") for the recordation of the names and addresses of the
Lenders and the  Commitments  of, and  principal  amounts of the Loans owing to,
each  Lender  from  time to time  (whether  or not  evidenced  by a  Note).  Any
assignment  or  transfer of all or part of a Loan  evidenced  by a Note shall be
registered on the Register only upon surrender for registration of assignment or
transfer  of the Note  evidencing  such  Loan,  accompanied  by a duly  executed
Assignment and Assumption Agreement,  and thereupon one or more new Notes in the
same aggregate  principal amount shall be issued to the designated  Assignee and
the old Note  shall be  returned  by the  Administrative  Agent to the  Borrower
marked  "canceled".  The entries in the  Register  shall be  conclusive,  in the
absence of manifest  error,  and the Borrower and the Credit Parties shall treat
each Person  whose name is  recorded  in the  Register as the owner of a Loan or
other  obligation  hereunder  as the  owner  thereof  for all  purposes  of this
Agreement  and the  other  Loan  Documents,  notwithstanding  any  notice to the
contrary.  Any  assignment  of any  Loan or  other  obligation  (whether  or not
evidenced by a Note) hereunder shall be effective only upon appropriate  entries
with respect thereto being made in the Register. The Register shall be available
for  inspection by the Borrower or any Credit Party at any  reasonable  time and
from time to time upon reasonable prior notice.

          (e) The  Borrower  hereby  authorizes  each  Lender to disclose to any
Participant  or Eligible  Assignee  (each a  "Transferee")  and any  prospective
Transferee,  subject to such Person  agreeing to comply with the  provisions  of
Section 13.17 of this Agreement,  any and all financial and other information in
such Lender's  possession  concerning the Borrower and its Affiliates  which has
been delivered to such Lender by or on behalf of the Borrower in connection with
such  Lender's  credit  evaluation of the Borrower and its  Affiliates  prior to
becoming a party to this Agreement.

          (f) Any Lender may at any time pledge or assign a security interest in
all or any portion of its rights under this Agreement to secure the  obligations
of such Lender,  including,  without  limitation,  any pledge or  assignment  to
secure  obligations to a Federal  Reserve Bank;  provided that no such pledge or
assignment  of a  security  interest  shall  release  a  Lender  from any of its
obligations  under this Agreement or substitute any such pledgee or assignee for
such  Lender as a party  hereto.  In the case of any Lender  that is a fund that
invests in bank loans,  such Lender may,  without the consent of the Borrower or
the  Administrative  Agent,  assign or pledge all or any portion of its Notes or
any other  instrument  evidencing its rights as a Lender under this Agreement to
any trustee for, or any other  representative of, holders of obligations owed or
securities issued, by such fund, as security for such obligations or securities;
provided   that  any   foreclosure   or  similar   action  by  such  trustee  or
representative shall be subject to the provisions of this Section 13.5 regarding
assignments.

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          (g) Any Person  purchasing a  participation  or an assignment of Loans
from any Lender  shall be required to  represent  and warrant  that its purchase
shall not  constitute a "prohibited  transaction"  (as defined in Section 5.1(m)
hereof).

          (h) Each  Lender  agrees to provide the  Administrative  Agent and the
Borrower  with  prompt  written  notice of any  issuance of  assignments  of its
interests hereunder.

          (i) No  assignment,  participation  or other transfer of any rights by
any Lender  hereunder or under the Notes shall be affected  that would result in
any interest  requiring  registration under the Securities Act, or qualification
under any state securities law.

          (j) No such  assignment  may be made to any Lender or other  financial
institution  (x) with  respect to which a receiver  or  conservator  (including,
without limitation,  the Federal Deposit Insurance  Corporation or the Office of
Thrift   Supervision)  has  been  appointed  or  (y)  that  is  not  "adequately
capitalized"  (as such term is defined in Section  131(b)(1)(B)  of the  Federal
Deposit  Insurance  Corporation  Improvement  Act as in effect on the  Agreement
Date).

          (k)  Notwithstanding  anything to the contrary  contained herein,  any
Lender (a "Granting  Lender")  may grant to a special  purpose  funding  vehicle
("SPC"),  identified as such in writing from time to time by the Granting Lender
to the  Administrative  Agent and the  Borrower,  the  option to  provide to the
Borrower  all or any  part  of any  Advance  that  such  Granting  Lender  would
otherwise  be  obligated  to make to the  Borrower  pursuant to this  Agreement;
provided  that,  at the time such  transfer  is made,  one of the  Agents or the
Lenders shall be the liquidity  provider and/or the  administrator  of such SPC;
provided  further that (i) nothing  herein shall  constitute a commitment by any
SPC to make any  Advance;  (ii) if an SPC elects not to exercise  such option or
otherwise fails to provide all or any part of such Advance,  the Granting Lender
shall be obligated to make such Advance  pursuant to the terms  hereof,  and the
Granting Lender shall be liable  hereunder  generally for all acts and omissions
of such SPC as if such acts and omissions were committed by the Granting Lender;
(iii) an SPC shall have no rights or benefits  under this  Agreement or any Note
or any other Loan Document, with its rights against the Granting Lender being as
set forth in any agreements between such SPC and the Granting Lender, and an SPC
shall not  constitute  a "Lender"  hereunder;  (iv) all  amounts  payable by any
Credit  Party to the  Granting  Lender  shall be  determined  as if the Granting
Lender had not granted such option,  and as if the Granting  Lender were funding
each of its Advances and its share of the Commitments in the same way that it is
funding the portion of such Advances and its share of the  Commitments  in which
no such option has been granted;  and (v) in no event shall the Granting  Lender
agree with an SPC to take or refrain from taking any action under this Agreement
or any Note or any other Loan  Document,  except  that the  Granting  Lender may
agree with an SPC that it will not,  without the  consent of such SPC,  agree to
any modification, supplement or waiver of this Section 13.5(k). The making of an
Advance by an SPC hereunder  shall utilize the Commitment of the Granting Lender
to the same extent,  and as if, such Advance were made by such Granting  Lender.
Each party hereto hereby agrees that no SPC shall be liable for any indemnity or
similar payment  obligation  under this Agreement (all liability for which shall
remain with the Granting  Lender).  In furtherance of the foregoing,  each party
hereto hereby  agrees (which  agreement  shall survive the  termination  of this
Agreement)  that,  prior to the date  that is one  year  and one day  after  the
payment in full of all outstanding commercial paper or other senior Indebtedness
of any  SPC,  it will  not  institute  against,  or join  any  other  person  in
instituting  against,   such  SPC  any  Insolvency   Proceeding.   In  addition,
notwithstanding  anything to the contrary in this Section 13.5,  any SPC may (I)
with notice to, but without the prior written consent of, the Borrower and the

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Administrative Agent and without paying any processing fee therefor,  assign all
or a portion of its  interests in any Advances to the Granting  Lender or to any
financial  institutions  (consented  to by the Borrower  and the  Administrative
Agent)  providing  liquidity and/or credit support to or for the account of such
SPC to support the funding or  maintenance  of Advances,  and (II) disclose on a
confidential  basis any non-public  information  relating to its Advances to any
rating agency,  commercial paper dealer or provider of any surety,  guarantee or
credit or liquidity enhancement to such SPC (each, a "Credit Support Provider"),
provided that the applicable  rating agency or Credit Support Provider agrees in
writing for the benefit of the Borrower to keep such  information  confidential.
As this Section  applies to any particular  SPC, this Section may not be amended
without the written consent of such SPC.

     Section 13.6  Accounting  Principles.  Except as set forth in the following
sentence, references in this Agreement to GAAP shall be to such principles as in
effect  from  time to  time,  and  all  accounting  terms  used  herein  without
definition  shall be used as defined  under  GAAP.  All  financial  calculations
hereunder shall,  unless otherwise  stated,  be determined for the Borrower on a
consolidated basis with the Designated Subsidiaries.

     Section 13.7 Counterparts.  This Agreement may be executed in any number of
counterparts,  each of which  shall be  deemed to be an  original,  but all such
separate counterparts shall together constitute but one and the same instrument.
In  proving  this   Agreement  or  any  other  Loan  Document  in  any  judicial
proceedings,  it shall not be  necessary to produce or account for more than one
such  counterpart  signed by the party against whom such  enforcement is sought.
Any signatures delivered by a party by facsimile transmission shall be deemed an
original signature hereto.

     Section 13.8 Governing Law. THIS AGREEMENT AND THE NOTES SHALL BE CONSTRUED
IN  ACCORDANCE  WITH AND GOVERNED BY THE INTERNAL  LAWS OF THE STATE OF NEW YORK
APPLICABLE  TO  AGREEMENTS  MADE AND TO BE  PERFORMED  IN NEW  YORK AND  WITHOUT
REFERENCE TO THE CONFLICTS OR CHOICE OF LAWS PRINCIPLES THEREOF.

     Section  13.9  Severability.  Any  provision  of this  Agreement  which  is
prohibited or  unenforceable  in any  jurisdiction  shall be  ineffective to the
extent  of  such  prohibition  or  unenforceability   without  invalidating  the
remaining  provisions  hereof in that  jurisdiction or affecting the validity or
enforceability of such provision in any other jurisdiction.

     Section 13.10 Interest.

          (a) In no event shall the amount of interest due or payable  hereunder
or under the Notes  exceed the maximum  rate of interest  allowed by  Applicable
Law, and in the event any such payment is inadvertently  made by the Borrower or
inadvertently received by any Lender then such excess sum shall be credited as a
payment of principal,  unless the Borrower shall notify the Administrative Agent
or such  Lender,  as  applicable,  in writing that it elects to have such excess
returned  forthwith.  It is the express  intent hereof that the Borrower not pay
and the Lenders not receive,  directly or indirectly  in any manner  whatsoever,
interest  in excess of that  which may  legally  be paid by the  Borrower  under
Applicable Law.

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          (b)  Notwithstanding  the use by the  Lenders of the Base Rate and the
Eurodollar  Rate as  reference  rates for the  determination  of interest on the
Loans,  the  Lenders  shall be under no  obligation  to  obtain  funds  from any
particular  source in order to charge interest to the Borrower at interest rates
related to such reference rates.

     Section 13.11 Headings. Headings used in this Agreement are for convenience
only and  shall not in any way  modify  or amend any of the terms or  provisions
hereof  nor be used in  connection  with  the  interpretation  of any  provision
hereof.

     Section 13.12  Amendment and Waiver.  Neither this  Agreement nor any other
Loan Document  (other than Interest  Hedge  Agreements),  nor any term hereof or
thereof,  may be  amended  orally,  nor may any  provision  hereof or thereof be
waived  orally,  but only by an instrument in writing signed by (or, in the case
of Security  Documents executed by the Collateral Agent signed by the Collateral
Agent and approved by) the Majority Lenders and, in the case of an amendment, by
the Borrower,  except that (a)(i) any increase in the amount of the  Commitments
of any Lender shall  require the consent of such Lender;  (ii) any  amendment to
the  application  of  payments  set forth in Section  2.7(e)  shall  require the
consent of the Majority Pro Rata Lenders and the Majority Tranche B Lenders; and
(iii) in the event of (A) any delay or  extension  in the terms of  repayment or
change in the order of application of repayment of the Loans provided in Section
2.6 hereof or any change in the scheduled reductions in the Revolving Commitment
or the Tranche A Commitment  under Sections  2.6(a) and (b) or any change in the
reimbursement  obligations  under any Letter of  Credit,  (B) any  reduction  in
principal,  interest or fees due  hereunder  or any delay in paying  interest or
fees hereunder, (C) any release of any substantial portion of the Collateral for
the Loans  other than a release  of any  portion  of the  Collateral  related to
SpectraSite  Mexico or a release of any portion of the  Collateral in connection
with a Permitted  Disposition,  (D) any waiver of any Default due to the failure
by the  Borrower  to pay any sum due to any of the  Lenders  hereunder,  (E) any
release of any Guaranty (or any guarantor  thereunder)  of all or any portion of
the  Obligations  other than a release of any Guaranty  provided by any Domestic
SpectraSite  Mexico  Subsidiary or a release of any other Guaranty in connection
with a Permitted Disposition,  (F) any amendment, whether direct or indirect, of
this Section 13.12,  or of the definition of "Majority  Lenders",  or, except in
connection with the  implementation  of the  Incremental  Facility to the extent
necessary to accord the various types of Incremental  Facility  Loans  treatment
similar to the treatment  accorded  Loans of a similar type  thereunder,  of any
portion of  Sections  2.9(c),  6.10,  10.3 or  Article 12 as they  relate to the
relative  priority of payment among the Obligations,  or (G) any other provision
of this Agreement or any of the other Loan Documents  specifically requiring the
consent or approval of each of the Lenders,  any  amendment or waiver or consent
may be made only by an  instrument  in  writing  signed  by (or,  in the case of
Security  Documents  executed by the Collateral Agent,  signed by the Collateral
Agent and approved by) each of the Lenders and, in the case of an amendment,  by
the Borrower. Any amendment to any provision hereunder, or any waiver or consent
with respect thereto, governing the rights,  obligations,  or liabilities of the
Administrative  Agent in its capacity as such, may be made only by an instrument
in  writing  signed  by the  Administrative  Agent  and by each of the  Lenders.
Notwithstanding the foregoing,  in the event that any amendment to any provision
hereunder,  or any waiver or consent with  respect  thereto,  shall  require the
approval of each of the Lenders and any Lender fails to provide  such  approval,
so long as no Default or Event of Default then exists,  the Borrower may, in its
discretion,  provide a  replacement  lender or  lenders  for such  non-approving
Lender,  which replacement  lender or lenders will be subject to the approval of
the Lead Arrangers, which shall not be unreasonably withheld, and the

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Administrative  Agent, such non-approving Lender and the Borrower shall take all
necessary  actions to transfer  promptly the rights,  duties and  obligations of
such  non-approving  Lender to such  replacement  lender or lenders  (including,
without limitation,  the payment in full of all Obligations hereunder due to the
non-approving Lender being replaced).

     Section  13.13 Entire  Agreement.  Except as otherwise  expressly  provided
herein,  this Agreement and the other documents described or contemplated herein
embody the entire  agreement  and  understanding  among the  parties  hereto and
thereto and supersede all prior  agreements and  understandings  relating to the
subject matter hereof and thereof.

     Section 13.14 Other  Relationships.  No relationship  created  hereunder or
under any other Loan Document  shall in any way affect the ability of any Credit
Party or any of their respective  Affiliates to enter into or maintain  business
relationships   with  the  Borrower  or  any  of  its   Affiliates   beyond  the
relationships  specifically  contemplated  by this  Agreement and the other Loan
Documents.

     Section 13.15 Loan Documents. The Indebtedness of the Borrower evidenced by
the Notes is secured by the  Security  Documents  and is intended by the parties
hereto to be in parity with the Interest Hedge Agreements in effect from time to
time  between the  Borrower and any Lender and senior in right of payment to all
other  Borrower Debt except to the extent  expressly  contemplated  hereby.  All
references to this Agreement or to any other Loan Document  whether herein or in
any other  Loan  Document  shall  refer to this  Agreement  or such  other  Loan
Document  as the  same  may be  amended,  restated,  supplemented  or  otherwise
modified  from  time to time.  To the  extent  that  any of the  Loan  Documents
executed in connection  with the closing of the Prior Credit  Agreement have not
been  amended  or amended  and  restated  in  connection  with the  transactions
contemplated  by  this  Agreement,  the  parties  hereby  acknowledge  that  all
references  contained  therein to the "Credit  Agreement" shall be references to
this Agreement and that all references  contained  therein to the "Senior Credit
Parties" shall be deemed to include all of the Credit Parties.

     Section  13.16  Reliance  on  and  Survival  of  Various  Provisions.   All
covenants, agreements, statements, representations and warranties made herein or
in any  certificate  delivered  pursuant hereto (i) shall be deemed to have been
relied  upon by each of the Agents and each of the Lenders  notwithstanding  any
investigation  heretofore or hereafter  made by them, and (ii) shall survive the
execution and delivery of the Notes and shall  continue in full force and effect
so long as any Note is  outstanding  and  unpaid.  Any right to  indemnification
hereunder,  including,  without  limitation,  rights  pursuant to Sections 2.10,
2.12,  2.13,  2.14,  6.10,  11.11,  12.3  and 13.2  hereof,  shall  survive  the
termination  of this  Agreement  and the payment and  performance  of all of the
Obligations.

     Section 13.17 Confidentiality.  All agreements,  instruments, documents and
other information received pursuant to this Agreement or any other Loan Document
by the Credit Parties shall be held in confidence by the Credit Parties,  except
for disclosures made (a) in connection with assignments of or  participations in
the Loans made pursuant to Section 13.5 hereof  (provided that such assignees or
participants  shall agree in writing to keep such  information  confidential  as
provided  herein),  (b)  as  otherwise  required  to  be  disclosed  by  banking
regulations,   process  of  law  or  other  Applicable  Law,  or  to  government
regulators, (c) of information received by a Credit Party without restriction as
to its disclosure or use from a Person who, to such Credit Party's  knowledge or
reasonable belief, was not prohibited from disclosing it by any duty of

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confidentiality,  (d) in connection with litigation  arising from this Agreement
or any  other  Loan  Document  to  which  a  Credit  Party  is a  party,  (v) of
information  which is or has become  public  (other  than  through  unauthorized
disclosure by any Credit Party), (vi) to the attorneys,  accountants,  and other
expert  consultants  (including rating agencies) for any Credit Party (who shall
be requested to similarly  hold such  information in  confidence),  (vii) to any
direct or indirect  contractual  counterparty  of a Lender in connection  with a
swap agreement or such contractual  counterparty's  professional advisor so long
as such contractual  counterparty or professional  advisor,  as the case may be,
agrees in writing to be bound by the provisions of this Section 13.17, (viii) to
the National Association of Insurance  Commissioners or any similar organization
or any nationally  recognized  rating agency that requires access to information
about a Lender's  investment  portfolio in connection  with ratings  issued with
respect to such Lender, or (ix) as otherwise permitted hereunder.

     Section 13.18 Delivery of Lender Addenda.  Each initial Lender shall become
a party to this  Agreement by  delivering to the  Administrative  Agent a Lender
Addendum  duly  executed by such Lender,  the  Borrower  and the  Administrative
Agent.

          ARTICLE 14 - Waiver of Jury Trial; Consent to Jurisdiction.

     Section 14.1 Waiver of Jury Trial. HOLDCO AND THE BORROWER,  FOR ITSELF AND
ON BEHALF OF EACH OF THE DESIGNATED SUBSIDIARIES, AND EACH OF THE CREDIT PARTIES
HEREBY  WAIVE THE  RIGHT TO A TRIAL BY JURY IN ANY  COURT  AND IN ANY  ACTION OR
PROCEEDING OF ANY TYPE IN WHICH  HOLDCO,  THE  BORROWER,  ANY OF THE  DESIGNATED
SUBSIDIARIES OR ANY OF THE CREDIT PARTIES, OR ANY OF THEIR RESPECTIVE SUCCESSORS
OR  ASSIGNS,  IS A PARTY,  AS TO ALL  MATTERS  AND THINGS  ARISING  DIRECTLY  OR
INDIRECTLY  OUT OF THIS  AGREEMENT  OR ANY OF THE OTHER LOAN  DOCUMENTS  AND THE
RELATIONS AMONG THE PARTIES LISTED IN THIS SECTION 14.1.

     Section  14.2  Consent  to  Jurisdiction.  THE  BORROWER  AND  EACH  OF THE
ADMINISTRATIVE  AGENT,  THE OTHER AGENTS AND THE LENDERS AGREE THAT ANY SUIT FOR
THE  ENFORCEMENT  OF THIS  AGREEMENT OR ANY OF THE OTHER LOAN  DOCUMENTS  MAY BE
BROUGHT  IN THE  COURTS OF THE STATE OF NEW YORK OR ANY  FEDERAL  COURT  SITTING
THEREIN AND EACH CONSENTS TO THE NONEXCLUSIVE JURISDICTION OF SUCH COURT AND THE
SERVICE OF PROCESS IN ANY SUCH SUIT BEING MADE UPON THE BORROWER BY CERTIFIED OR
REGISTERED  MAIL AT THE ADDRESS  SPECIFIED IN SECTION 13.1. THE BORROWER  HEREBY
WAIVES ANY OBJECTION  THAT IT MAY NOW OR HEREAFTER HAVE TO THE VENUE OF ANY SUCH
SUIT OR ANY SUCH COURT OR THAT SUCH SUIT IS BROUGHT IN AN INCONVENIENT COURT.

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The following exhibits and schedules have been omitted and will be submitted to
the SEC upon request.

                     EXHIBITS

   Exhibit A         -       Form of Assignment and Assumption Agreement
   Exhibit B         -       Form of Borrower Pledge Agreement
   Exhibit C         -       Form of Certificate of Financial Condition
   Exhibit D         -       Form of Holdco Pledge Agreement
   Exhibit E-1       -       Form of Amended and Restated Borrower
                             Trademark Security Agreement
   Exhibit E-2       -       Form of Subsidiary Trademark Security Agreement
   Exhibit E-3       -       Form of Patent Security Agreement
   Exhibit F         -       Form of Lender Addendum
   Exhibit G         -       Copy of Nextel Intercreditor Agreement
   Exhibit H         -       Form of Notice of Conversion/Continuation
   Exhibit I         -       Form of Performance Certificate
   Exhibit J         -       Form of Request for Advance
   Exhibit K         -       Form of Request for Issuance of Letter of Credit
   Exhibit L         -       Form of Revolving Note
   Exhibit M         -       Form of Security Agreement
   Exhibit N         -       Form of Subsidiary Guaranty
   Exhibit O         -       Form of Subsidiary Pledge Agreement
   Exhibit P         -       Form of Subsidiary Security Agreement
   Exhibit Q         -       Form of Swing Loan Note
   Exhibit R         -       Form of Tranche A Note
   Exhibit S         -       Form of Tranche B Note
   Exhibit T         -       Form of Use of Proceeds Letter
   Exhibit U         -       Form of Swing Loan Request
   Exhibit V         -       Form of Borrower's Loan Certificate
   Exhibit W         -       Form of Guarantor's Loan Certificate
   Exhibit X         -       Form of New Subsidiary Questionnaire

                     SCHEDULES

   Schedule 1        -       Allocation of Commitments among Lenders
                             and Lenders' Addresses for Notice
   Schedule 2.14     -       Letters of Credit as of the Agreement Date
   Schedule 5.1(c)   -       Capitalization
   Schedule 5.1(h)   -       Title to Assets
   Schedule 5.1(i)   -       Litigation
   Schedule 5.1(m)   -       ERISA
   Schedule 5.1(q)   -       Intellectual Property
   Schedule 5.1(s)   -       Agreements with Affiliates
   Schedule 5.1(t)   -       Environmental Matters
   Schedule 5.1(u)   -       Labor Matters
   Schedule 5.1(x)   -       Investments
   Schedule 5.1(y)   -       Material Contracts