EXHIBIT 4.5

                          NEXTEL COMMUNICATIONS, INC.

                                      and

                            THE BANK OF NEW YORK,
                                  as Trustee


                          THIRD SUPPLEMENTAL INDENTURE

                            Dated as of June 13, 1997


                                        To

                    The Indenture Dated as of January 13, 1994
                     Between CenCall Communications Corp. and
                   The Bank of New York, as Trustee, Relating to
               $409,876,000 Aggregate Principal Amount at Maturity
                  of Senior Redeemable Discount Notes due 2004



                              THIRD SUPPLEMENTAL INDENTURE

          THIS THIRD SUPPLEMENTAL INDENTURE (the "Supplemental Indenture") is
made as of the 13th day of June, 1997, between Nextel Communications, Inc., a
corporation duly organized and existing under the laws of the State of Delaware
(the "Company"), and The Bank of New York, a New York banking corporation, as
Trustee (the "Trustee").

                                RECITALS OF THE COMPANY

         WHEREAS, the Company and the Trustee heretofore executed and delivered
an Indenture, dated as of January 13, 1994, as heretofore amended (the
"Indenture"); and

         WHEREAS, pursuant to the Indenture, the Company issued and the Trustee
authenticated and delivered $409,876,000 aggregate principal amount at maturity
of the Company's Senior Redeemable Discount Notes due 2004 (the "Securities");
and

         WHEREAS,  the Company has assumed all  obligations  of CenCall
Communications  Corp.  under the Indenture pursuant to the Second  Supplemental
Indenture, dated as of July 28, 1995, between the Company and the Trustee; and

         WHEREAS,  the Company  desires to make certain  modifications  to the
provisions  of the Indenture and to transfer to an Unrestricted  Subsidiary all
of the equity interest of Clearnet  Communications,  Inc.  ("Clearnet") that is
held directly by the Company on the date hereof (the "Clearnet Transfer"); and

         WHEREAS, Section 9.2 of the Indenture provides that with the consent
of the Holders of not less than a majority  in  principal  amount at Stated
Maturity  of the  Securities  at the time  Outstanding  (the  "Requisite
Amendment Consents"),  the Company, when authorized by a resolution of its
Board of Directors, and the Trustee may enter into an indenture or  indentures
supplemental  to the  Indenture  for the purpose of adding  provisions  to,
changing  or  eliminating  certain  provisions  of the  Indenture,  subject to
certain  exceptions  specified  in Section 9.2 of the Indenture; and

         WHEREAS, the Company has obtained the Requisite Amendment Consents to
amend the  Indenture in certain respects (the "Proposed Amendments"); and

         WHEREAS, Section 10.18 of the Indenture provides that with the consent
of Holders of at least a majority in principal  amount at Stated Maturity of
Securities at the time Outstanding  (the "Requisite  Waiver  Consents"), the
Company may omit to comply with certain provisions of the Indenture; and

         WHEREAS, the Company has obtained the Requisite Waiver Consents to
waive compliance with certain provisions of the

ATMAIN02 Doc:189538_3                                               OneComm



Indenture in connection with the Clearnet Transfer (the "Proposed Waivers");
and

         WHEREAS, this Supplemental Indenture has been duly authorized by all
necessary corporate action on the part of the Company; and

         WHEREAS,  the Company has delivered, or caused to be delivered, to the
Trustee,  an Opinion of Counsel stating that this Supplemental Indenture
complies with the requirements of the Indenture;

         NOW, THEREFORE, the Company hereby covenants and agrees with the
Trustee for the equal and proportionate benefit of all Holders of the
Securities, as follows:

                                 ARTICLE 1
                  WAIVERS OF CERTAIN PROVISIONS OF INDENTURE

         Section 1.01.  Waiver of  Compliance  with Certain  Provisions  of the
Indenture in  Connection  With the Clearnet  Transfer. Subject to Section 3.01
hereof, compliance by the Company with Section 10.9 of the Indenture (including
clause (iv) of the first paragraph thereof), to the extent that such Section
would apply to limit the ability of the Company to transfer  all of the capital
stock of Clearnet  that is held  directly by the Company on the date hereof to
McCaw  International,  Ltd. ("MIL"), a wholly owned Unrestricted  Subsidiary of
the Company, or to any direct or indirect  wholly owned  subsidiary of MIL that
is designated by MIL as the intended recipient of such equity  interest in
Clearnet,  is hereby  waived.  As a result of such waiver,  any such transfer
shall not be deemed a Restricted Payment under Section 10.9 of the Indenture.

                                 ARTICLE 2
                 AMENDMENTS TO CERTAIN PROVISIONS OF INDENTURE

         Section 2.01.  Amendment  of Certain  Sections  of the  Indenture.
Subject to Section 3.01 hereof, the Indenture is hereby amended in the
following respects:

          (a) The definition of "Credit Facility" contained in Section 1.1 of
    the Indenture is hereby amended to read in its entirety as follows:

                 "'Credit Facility' means any credit facility (whether a term
          or revolving type) of the type customarily entered into with banks,
          between the Company and/or any of its Restricted Subsidiaries, on the
          one hand, and any  banks or other lenders, on the other hand (and any
          renewals, refundings, extensions or replacements of any such credit
          facility), which credit facility is designated by the Company as a
          "Credit  Facility" for purposes of this Indenture, to the extent that
          the aggregate  principal  balance of Debt that is Incurred and

ATMAIN02 Doc:189538_3                    2                           OneComm



          outstanding under all Credit Facilities at any time does not exceed
          $1,905,000,000."

          (b) The definition of "Incur" contained in Section 1.1 of the
    Indenture is hereby  amended to read in its entirety as follows:

                 "'Incur' means, with respect to any Debt or other obligation
          of any Person, to create, issue, incur (by conversion,  exchange or
          otherwise), assume (pursuant to a merger, consolidation, acquisition
          or other transaction), Guarantee or otherwise become liable in
          respect of such Debt or other  obligation  or the  recording,  as
          required  pursuant to generally accepted  accounting  principles or
          otherwise, of any such Debt or other obligation  on the balance sheet
          of such Person (and  "Incurrence",  "Incurred",  "Incurrable" and
          "Incurring" shall have  meanings  correlative  to the  foregoing);
          provided,  however,  that a change in generally accepted  accounting
          principles that results in an obligation of such Person that exists
          at such time becoming Debt shall not be deemed an Incurrence  of such
          Debt;  provided  further,  however, that the  accretion of original
          issue discount on Debt shall not be deemed to be an  Incurrence of
          Debt. Debt otherwise Incurred  by a Person  before it becomes a
          Subsidiary of the Company shall be deemed to have been Incurred at
          the time it becomes such a Subsidiary."

          (c) The definition of "Investment" contained in Section 1.1 of
    the Indenture is hereby amended to read in its entirety as follows:

                 "'Investment' by any Person means any direct or indirect loan,
          advance or other extension of credit or capital  contribution to (by
          means of transfers of cash or other property to others or payments
          for property or services for the account or use of others,  or
          otherwise), or purchase or acquisition of Capital Stock, bonds,
          notes, debentures or other securities or evidence  of Debt  issued
          by, any other  Person; provided  that a  transaction  will not be an
          Investment to the extent it involves (i) an Asset  Disposition, (ii)
          the issuance or sale by the Company of its Capital Stock (other than
          Disqualified  Stock),  including  options,  warrants or other rights
          to acquire such Capital Stock (other than  Disqualified  Stock) or
          (iii) a transfer, assignment or contribution by the Company of shares
          of Capital Stock (or any options, warrants or rights  to  acquire
          Capital Stock), or all or  substantially  all of the  assets  of, any
          Unrestricted Subsidiary of the Company to another Unrestricted
          Subsidiary of the Company."

          (d) The  definitions of "Motorola  Agreements" and "Northern  Telecom
    Agreements" contained in Section 1.1  of the

ATMAIN02 Doc:189538_3                    3                           OneComm



    Indenture are hereby deleted, and the phrase "a Motorola  Agreement
    or a Northern Telecom Agreement" contained in clause (ii) of the
    definition of "Permitted  Lien" is hereby deleted and replaced
    with the phrase "a Vendor  Financing  Agreement or any Lien
    (including Liens on Capital Stock of any Restricted Subsidiary)
    to the extent it secures Debt outstanding under a Credit Facility."

          (e) The definition of "Nextel 2004 Indenture" contained in Section
    1.1 of the Indenture is hereby amended to read in its entirety as follows:

                 "'Nextel 2004 Indenture' means the indenture, dated as of
          February 15, 1994, as amended by the First, Second and Third
          Supplemental Indentures, between the Company and The Bank of New
          York, as trustee, relating to the Senior Redeemable Discount Notes
          due 2004 issued by NEXTEL Communications, Inc."

          (f) The definition of "Permitted Debt" contained in Section 1.1 of
    the Indenture is hereby amended to read in its entirety as follows:

                 "'Permitted Debt' means (i) any Debt Incurred under a Vendor
          Financing Agreement; (ii) (A) any other Debt (including Guarantees
          thereof) outstanding on February 15, 1994 (including Debt represented
          by the Nextel Notes), (B) any Debt (including Guarantees thereof) of
          OneComm Corporation and its Subsidiaries outstanding on July 28, 1995
          including the Securities), and (C) any Debt (including Guarantees
          thereof) of Dial Page, Inc. and its Subsidiaries  outstanding  on
          January 30, 1996 (including the Dial Call Notes), and any accretions
          of original issue discount and accruals of interest with respect to
          any Debt described in this clause (ii) and with respect to any
          refinancings of such Debt; (iii) any Debt (other than Debt described
          in clause (i) or (ii) above) that does not, at any time  outstanding,
          exceed  $5.00  per  POP,  if the net  proceeds  of such  Debt  are
          invested  exclusively  in the telecommunications  business (including
          related  activities  and  services)  conducted  by  the Company and
          its Restricted  Subsidiaries, including related capital expenditure
          and working capital requirements; (iv) any Debt outstanding  under a
          Credit Facility; and (v) renewals, refundings or extensions of any
          Debt referred to in clause (ii) above or Incurred  pursuant to
          the provisions of Section 1008, plus (A) the amount of any premium
          reasonably determined by the Company as necessary to accomplish such
          renewal, refunding or extension and (B) such other fees and expenses
          of the Company reasonably incurred in connection with the renewal,
          refunding or extension, provided that such renewal, refunding or
          extension shall constitute Permitted Debt only (a) to the extent that
          it does not result in an increase in the aggregate  principal  amount

ATMAIN02 Doc:189538_3                    4                           OneComm




          (or, if such Debt  provides for an amount less than the  principal
          amount thereof to be due and payable upon a declaration of
          acceleration of the maturity thereof, in an amount not greater than
          such lesser amount) of such Debt (except as permitted by clause (A)
          or (B) above), (b) to the extent such renewed, refunded or extended
          Debt does not require the payment of all or a portion  of the
          principal thereof (whether pursuant to repurchase, redemption,
          repayment, defeasance, retirement, sinking fund payment, payment at
          stated maturity or otherwise) prior to the final  stated  maturity of
          the Debt being renewed, refunded or extended and (c) if the Debt to
          be so renewed, refunded or extended is Debt of the Company  that is
          subordinate in right of payment to the Securities, then the new Debt
          is subordinated in right of payment to the Securities on
          subordination terms no less  favorable to the Holders of the
          Securities in their capacities as such than the subordination terms
          (or other arrangement) applicable to the Debtto be renewed, refunded
          or extended;  provided,  however,  that in no event shall the
          aggregate amount of Debt that is Incurred and outstanding  under
          clauses (i), (iii) and (iv) at any time exceed $1,910,000,000;
          provided further, however, that no Debt that is represented by
          unsecured notes originally issued by the Company on or after June 1,
          1997 and ranking pari passu with the Securities ("New Notes") shall
          be Incurred under clause (iii) above, unless the amount of Debt
          represented  by the issue of New  Notes  could  have been  Incurred,
          on or after June 1, 1997, pursuant to the provisions of Section 10.8."

          (g) Section 1.1 of the Indenture is hereby amended to add the
    following definitions at the appropriate places in such section:

                 "'Consolidated Interest Expense' of any Person means, for any
          period, the aggregate interest  expense and fees and other financing
          costs in respect of Debt (including  amortization of original issue
          discount and non-cash interest payments and accruals),  the interest
          component in respect of Capital Lease  Obligations and any deferred
          payment obligations of such Person and its  Subsidiaries, determined
          on a consolidated basis in accordance with generally accepted
          accounting principles and all commissions, discounts, other fees and
          charges owed with respect to letters of credit and bankers'
          acceptance financing and net costs (including amortizations of
          discounts) associated with interest rate swap and similar agreements
          and with foreign currency hedge, exchange and similar agreements and
          the amount of dividends paid in respect of Disqualified Stock."

                 "'Directed Investment' by the Company or any of its Restricted
          Subsidiaries means any Investment for which the cash or property used
          for such Investment is received

ATMAIN02 Doc:189538_3                    5                           OneComm



          by the Company from the issuance and sale (other than
          to a Restricted  Subsidiary) on or after June 1, 1997 of
          shares of its Capital Stock (other than Disqualified  Stock),
          or any options, warrants or other rights to purchase such Capital
          Stock (other than Disqualified Stock) designated by the Board of
          Directors as a "Directed  Investment" to be used for one or more
          specified investments in the telecommunications business (including
          related activities and services) and is so designated and used at any
          time within 365 days after the receipt thereof; provided  that the
          aggregate amount of any such  Directed  Investments  may not at any
          time exceed fifty  percent (50%) of the aggregate amount of such cash
          or property  received by the Company on or after June 1,  1997 from
          any such  issuance and sale or capital  contribution;  and provided,
          further, that any proceeds from any such  issuance or sale may not be
          used for such an  investment  if such  proceeds  were, prior to being
          designated for use as a  Directed  Investment, (x) used  to make a
          Restricted Payment or (y) used as the basis for the Incurrence of
          Debt under clause (i) of Section 10.8 unless and until the amount of
          any such Debt (I) is treated as newly issued Debt and could be
          Incurred in accordance  with  clause (ii) of  Section 10.8  or (II)
          has been repaid or refinanced with the proceeds of Debt Incurred in
          accordance with clause (ii) of Section 10.8 or with the proceeds of
          Permitted Debt or (III)  has  otherwise  been  repaid and, in the
          circumstances described in clauses (I) and (II), the Company delivers
          to the Trustee a certificate confirming that the requirements of such
          clauses have been met."

                 "'First Tranche Option' means the option, exercisable on or
          before 6:00 p.m. local time in New York, New York on July 28, 1997 by
          Digital Radio, L.L.C., for the purchase of an aggregate of up to
          15,000,000 shares of common stock of the Company (as such number may
          be adjusted pursuant to the terms of the option) at an exercise price
          of $15.50 per share (as such price may be adjusted  pursuant  to the
          terms of the option), granted by the Company under the Option
          Agreement (First Tranche) by and between Digital Radio, L.L.C. and
          the Company, dated as of July 28, 1995."

                 "'Operating Cash Flow to Consolidated Interest Expense Ratio'
          means, as at any date of determination, the ratio of (i) the
          Operating  Cash Flow of the Company  for the most recently completed
          fiscal quarter of the Company to (ii) the Consolidated Interest
          Expense of the Company and its Restricted  Subsidiaries  for the most
          recently  completed  fiscal quarter of the Company."

                 "'Replacement Option' means the option to purchase 25,000,000
          shares of common stock of the Company, originally  issued to an
          affiliate of Craig  O. McCaw,

ATMAIN02 Doc:189538_3                    6                           OneComm



          exercisable  at any time through July 28, 1998, as described in the
          Company's  Consent  Solicitation  Statement  dated April 14, 1997, as
          amended or supplemented through the date of the Third Supplemental
          Indenture hereto."

                 "'Vendor  Financing Agreement' means any agreement pursuant to
          which the Company or any of its  Restricted  Subsidiaries  incurs, or
          may incur, Vendor Financing Debt (including any renewals,
          refinancings, extensions or replacements of such Vendor Financing
          Debt), to the extent that the aggregate principal balance of Vendor
          Financing Debt that is  Incurred  and outstanding under all Vendor
          Financing Agreements at any time does not exceed $850,000,000."

                 "'Vendor Financing Debt' means any Debt owed to (i) a vendor
          or supplier of any property  or  materials used by  the Company or
          its Restricted Subsidiaries in their telecommunications  business,
          (ii) any Affiliate of such a vendor or supplier, (iii) any assignee
          of such a vendor, supplier or Affiliate of such a vendor or supplier,
          or (iv) a bank or other financial  institution  that has financed or
          refinanced the purchase of such property or materials  from such a
          vendor, supplier, Affiliate of such a vendor or supplier or assignee
          of such a vendor or supplier;  provided that the  aggregate amount of
          such Debt does not exceed the sum  of  (w) the purchase  price  of
          such  property or materials (including transportation, installation,
          warranty and testing charges, as well as applicable taxes paid, in
          respect of such property  or materials), (x) the cost of design,
          development, site  acquisition and construction, (y) any  interest or
          other  financing  costs  accruing  or  otherwise  payable in respect
          of the foregoing,  and (z) the cost of any services provided by such
          vendor,  supplier or Affiliate of such vendor or supplier."

          (h) All references to  "Consolidated  Debt to Annualized  Operating
    Cash Flow Ratio" contained in the  definition of "Operating  Cash Flow" in
    Section 1.1 of the Indenture are hereby deleted and replaced with the term
    "Operating Cash Flow to Consolidated Interest Expense Ratio."

          (i) The first  paragraph  of  Section 8.1 of the Indenture is hereby
    amended by adding the following proviso at the end of such paragraph:

                 "provided, however, that the foregoing requirements shall not
          apply to any  transaction or series of  transactions involving the
          sale, assignment, conveyance, transfer, lease or other disposition of
          the properties and assets substantially as an entirety by any Wholly
          Owned Restricted Subsidiary to any other Wholly Owned Restricted
          Subsidiary, or the merger or consolidation of

ATMAIN02 Doc:189538_3                    7                           OneComm



          any Wholly Owned Restricted Subsidiary  with or into any other Wholly
          Owned Restricted Subsidiary."

          (j) The text of Section 10.8 of the Indenture is hereby deleted and
    amended to read in its entirety as follows:

                 "The Company shall not, and shall not permit any Restricted
          Subsidiary to, Incur any Debt (including Acquired  Debt), other than
          Permitted Debt, unless, (i) with respect to Debt Incurred on or prior
          to December 31, 1999, the Debt so Incurred is in an aggregate amount
          that does not exceed the multiples specified below of the aggregate
          amount of net cash  proceeds received by the Company during the
          applicable time periods specified below from the issuance and sale
          (other than to a Subsidiary) of shares of its Capital Stock (other
          than Disqualified Stock), or any options, warrants or other rights to
          purchase such Capital Stock (other than Disqualified Stock), other
          than (x) proceeds received by the Company  pursuant to (I) the
          exercise of the First Tranche Option, (II) the  sale (but not the
          exercise) of the Replacement Option, or (III) the purchase of shares
          of Capital Stock by holders of the Securities and the holders of each
          other Issue of Notes (as defined in the Company's Consent
          Solicitation Statement, dated April 14, 1997 and as amended or
          supplemented through the date of the Third Supplemental Indenture
          hereto) in exchange for the consent  payment  made to such holders as
          consideration  for such  holders  providing  their  consent to the
          Proposed  Amendments  and the Proposed Waivers contained in the Third
          Supplemental Indenture, (y) proceeds applied for use as a Directed
          Investment (unless such designation has been revoked by the Board of
          Directors and the Company either abandons its plans to make such
          Investment or is able to make such Investment pursuant to Section
          10.9 (other than as a Directed Investment)) and (z) proceeds which
          have been included in the  computation  of the amounts  available for
          Restricted Payments pursuant to Section 1009(c)(ii) of the Nextel
          2004 Indenture, to the extent the inclusion thereof was necessary to
          allow a subsequent Restricted Payment to be made; and (ii) with
          respect to Debt Incurred on or after January 1, 2000, on the date of
          such Incurrence, after giving effect to the Incurrence of such Debt
          (or Acquired  Debt) and the receipt and  application of the net
          proceeds thereof (and, if the net proceeds of such new Debt are used
          to acquire a Person that becomes a Restricted Subsidiary or an
          operating  business  of the  Company or a Restricted  Subsidiary, to
          all terms of such acquisition) on a pro forma basis,  the Operating
          Cash Flow to  Consolidated Interest Expense Ratio would equal or
          exceed (x) 1.75 to 1 for the period from January 1, 2000 through
          June 30, 2000, (y) 2.0 to 1 for the period from July 1, 2000 through
          December 31, 2000, and (z) 2.25 to 1 for the period on and after
          January 1, 2001;

ATMAIN02 Doc:189538_3                    8                           OneComm



          provided, however, that for purposes of calculating the Debt that may
          be Incurred under either of the foregoing clauses (i) or (ii), the
          amount of any  accretions of original issue discount and  accruals of
          interest  (to the extent not overdue for  payment)  with  respect to
          any Debt so Incurred  shall be excluded from the determination of the
          amount of Debt that may be Incurred pursuant to such  calculations.
          The multiples of net cash proceeds applicable for purposes of
          clause (i) shall be as follows for the following specified time
          periods:

                                                    Multiple of
         Period during which net cash               net cash
         proceeds are received                      proceeds   


         June 1, 1997 through March 31, 1998            2.25

         April 1, 1998 through December 31, 1998        2.00

         January 1, 1999 through December 31, 1999      1.75


          (k) The first paragraph of Section 10.9 of the Indenture is hereby
    amended by deleting clause (b) in its entirety and replacing it with the
    following:

                 "(b) after giving effect, on a pro forma basis, to such
          Restricted Payment and the Incurrence  of any Debt the net proceeds
          of which are used to finance such Restricted Payment, then, in the
          case of any Restricted Payment described in clause (i), (ii) or (iii)
          above, the Consolidated Debt to Annualized Operating Cash Flow Ratio
          would not have exceeded 5.0 to 1 and, in the case of any Restricted
          Payment described in clause (iv) above, the Company would be
          permitted under this Indenture to Incur at least $1 of additional
          Debt, other than Permitted Debt; and"

          (l) The first sentence of the second  paragraph of  Section 10.9  of
    the Indenture is hereby amended to read in its entirety as follows:

                 "The foregoing limitations in this Section 10.9 do not limit
          or restrict the making of any Permitted Distribution, Permitted
          Investment or Directed Investment, and none of a Permitted
          Distribution, Permitted Investment or Directed Investment shall be
          counted as a Restricted Payment for purposes of clause (c) above."

ATMAIN02 Doc:189538_3                    9                           OneComm



          (m) The sixth paragraph of Section 10.10 of the Indenture is hereby
    amended to read in its entirety as follows:

                 "The Board of Directors, from time to time, may designate any
          Person that is about to become a Subsidiary of the Company as an
          Unrestricted Subsidiary, and may designate any newly-created
          Subsidiary as an Unrestricted Subsidiary, if at the time such
          Subsidiary is created it contains no assets (other than such de
          minimis  amount of assets then required by law for the  formation of
          corporations) and no Debt. Subsidiaries of the Company that are not
          designated by the Board of Directors as Restricted or Unrestricted
          Subsidiaries shall be deemed to be Restricted Subsidiaries.
          Notwithstanding any provisions of this Section 10.10, all
          Subsidiaries of a Restricted  Subsidiary  shall be Restricted
          Subsidiaries and all Subsidiaries of an Unrestricted Subsidiary shall
          be Unrestricted Subsidiaries. The Board of Directors shall not change
          the designation of a Subsidiary of the Company more than twice in any
          period of five years."


                                  ARTICLE 3
                             SUNDRY PROVISIONS

         Section 3.01.  Effect of  Supplemental  Indenture.  Upon the execution
and delivery of this  Supplemental Indenture by the Company and the Trustee,
the Indenture  shall be supplemented  in accordance  herewith,  and this
Supplemental  Indenture  shall  form a part of the Indenture for all purposes,
and every  Holder of  Securities heretofore  or  hereafter  authenticated  and
delivered  under the  Indenture  shall be bound  thereby;  provided, however,
that  Sections 1.01  and 2.01 hereof  shall  become  operative  upon the
satisfaction  (or waiver by the Company) of all of the conditions  (including,
without limitation,  the General Conditions)  described and defined in the
Consent  Solicitation  Statement,  dated  April 14,  1997 and as amended or
supplemented  through the date hereof,  that was provided to Holders of
Securities in connection  with the Company's  solicitation  of consents by
such Holders to the Proposed Waivers and the Proposed Amendments.

         Section 3.02.   Indenture  Remains  in  Full  Force  and  Effect.
Except  as  supplemented  hereby,  all provisions in the Indenture shall remain
in full force and effect.

         Section 3.03.  Indenture and Supplemental  Indenture  Construed
Together.  This Supplemental  Indenture is an indenture  supplemental  to and
in  implementation  of the  Indenture,  and the Indenture and this Supplemental
Indenture shall henceforth be read and construed together.

         Section 3.04.  Confirmation  and  Preservation  of  Indenture.  The
Indenture  as  supplemented  by  this Supplemental Indenture is in all respects
confirmed and preserved.

ATMAIN02 Doc:189538_3                    10                           OneComm



         Section 3.05.  Conflict  with  Trust  Indenture  Act.  If any
provision of this Supplemental  Indenture limits,  qualifies or conflicts with
any provision of the Trust  Indenture Act that is required  under such Act to
be part of and govern any provision of this  Supplemental  Indenture,  the
provision of such Act shall control.  If any provision of this Supplemental
Indenture  modifies or excludes any provision of the Trust  Indenture Act that
may be so  modified  or  excluded,  the  provision of such Act shall be deemed
to apply to the Indenture as so modified or to be excluded by this Supplemental
Indenture, as the case may be.

         Section 3.06.  Separability  Clause.  In case  any  provision  in this
Supplemental  Indenture  shall  be invalid,  illegal or unenforceable,  the
validity,  legality and  enforceability of the remaining  provisions shall
not in any way be affected or impaired thereby.

         Section 3.07.  Terms Defined in the Indenture.  All capitalized  terms
not otherwise  defined herein shall have the meanings ascribed to them in the
Indenture.

         Section 3.08.  Effect of Headings.  The Article and Section  headings
herein are for convenience  only and shall not affect the construction hereof.

         Section 3.09.  Benefits of  Supplemental  Indenture,  etc.  Nothing in
this  Supplemental  Indenture,  the Indenture  or the  Securities,  express or
implied,  shall give to any Person,  other than the parties  hereto and
thereto and their  successors  hereunder and thereunder and the Holders of
Securities,  any benefit of any legal or equitable right, remedy or claim under
the Indenture, this Supplemental Indenture or the Securities.

         Section 3.10.  Successors  and Assigns.  All covenants and  agreements
in this  Supplemental  Indenture by the Company shall bind its successors and
assigns, whether so expressed or not.

         Section 3.11.  Trustee Not  Responsible  for  Recitals.  The recitals
contained  herein shall be taken as the statements of the Company, and the
Trustee assumes no responsibility for their correctness.

         Section 3.12.  Certain  Duties and  Responsibilities  of the Trustee.
In entering into this  Supplemental Indenture, the Trustee  shall be  entitled
to the benefit of every  provision  of the  Indenture  relating to the
conduct or affecting the liability of or affording  protection to the Trustee,
whether or not elsewhere  herein so provided.

         Section 3.13.  Governing  Law.  This  Supplemental Indenture shall be
governed  by  and  construed  in accordance with the laws of the State of New
York, without regard to the conflicts of law principles thereof.

ATMAIN02 Doc:189538_3                    11                           OneComm



         Section 3.14.  Counterparts.  This  Supplemental  Indenture  may be
executed  in  counterparts,  each  of which, when so executed,  shall be deemed
to be an original,  but all such counterparts  shall together  constitute
but one and the same instrument.

         IN WITNESS  WHEREOF,  the parties hereto have caused this Supplemental
Indenture to be duly executed and attested, all as of the date and year first
above written.

                                        NEXTEL COMMUNICATIONS, INC.

                                        By:    /s/Thomas J. Sidman       
                                        Title: Vice President            

Attest: /s/ Thomas D. Hickey
Title:  Assistant Secretary                   

                                        THE BANK OF NEW YORK,
                                        as Trustee

                                        By:     /s/ Marie E. Trimboli   
                                        Title:  Assistant Treasurer      

Attest: /s/ Paul Schmazel                   
Title:  Assistant Vice President                   


ATMAIN02 Doc:189538_3                 12                            OneComm