EXHIBIT 10.11
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                            STOCK OPTION AGREEMENT

         THIS STOCK OPTION  AGREEMENT  (this  "Agreement"),  is made and entered
into  as of the  5th day of  March,  1997,  by and  between  SBA  COMMUNICATIONS
CORPORATION,  a Florida  corporation (the "Company"),  and RONALD G. BIZICK,  II
(the "Optionee");

                             W I T N E S S E T H:

         WHEREAS,  the  Optionee  has agreed to  terminate  all of his  existing
employment and incentive  agreements and stock options with SBA, Inc., a Florida
corporation,  and SBA Leasing,  Inc., a Florida  corporation,  both wholly-owned
subsidiaries of the Company,  and to accept employment with the Company pursuant
to the terms and conditions of that certain  Employment  Agreement,  dated as of
January  1,  1997,   between  the  Company  and  the  Optionee  (the   "Employee
Agreement"); and

         WHEREAS,  in exchange for Optionee  terminating his rights with respect
to options  entitling  him to purchase  shares of capital stock in SBA, Inc. and
SBA Leasing,  Inc., the Company desires to grant to the Optionee, in addition to
176,472  shares of the  Company's  Class A Common Stock $.01 par value per share
(the "Class A Common  Stock"),  certain options to purchase  additional  Class A
Common Stock, all as more particularly set forth herein;

         NOW, THEREFORE,  in consideration of the mutual premises and covenants,
and other good and valuable consideration,  the receipt and adequacy of which is
hereby acknowledged, it is hereby agreed as follows:

         1.  Grant of Option.  Subject to and upon the terms and  conditions  
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set forth in this Agreement, the Company hereby grants to the Optionee options
(the "Options") to purchase up to seven hundred seventy three thousand five
hundred twenty eight (773,528) shares of the Class A Common Stock at an exercise
price of $.05 per share.

         2.  Time of Exercise.  The Options are immediately  exercisable and 
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will expire and be of no further force or effect if unexercised by December 31,
2006.

         3.  No Transferability.  The options may not be sold, conveyed, 
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pledged, hypothecated or otherwise transferred in any manner by the Optionee
without the prior written consent of the Company; provided, however, that the
options may be transferred pursuant to will or the laws of intestacy following
Optionee's life or, during Optionee's life, to a person or entity who would be
deemed an Eligible Class B Stockholder as such term is defined in the Company's
Articles of Incorporation and substituting in such definition as appropriate
Optionee for Steven M. Bernstein. No such sale, transfer or hypothecation may
occur in any event except in compliance with federal and state securities laws,
as determined to the satisfaction of the Company and its counsel in their sole
discretion.

         4.  Partial  Exercise.  Exercise of the options up to the extent stated
may be made in part at any time and  from  time to time  within  the  limits  of
Section 2 hereof, except that the options may            
    

 
not be exercised for a fraction of a share. Any fractional share with respect to
which  an  installment  of  the  options  cannot  be  exercised  because  of the
limitation  contained in the  preceding  sentence  shall  remain  subject to the
options and shall be available for later  purchase by the Optionee in accordance
with the terms hereof.

         5.  Payment  of Price.  The option  price of each  option is payable in
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lawful currency of the United States and must be paid in cash or by certified or
cashier's  check,  or any  combination of the foregoing,  equal in amount to the
option price.

         6.  Restricted Shares; Purchase for Investment. The Optionee agrees 
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that (i) his purchase of shares of Class A Common Stock of the Company (the
"Shares") upon an exercise of an option hereunder will not be made with a view
toward the "distribution" of such Shares, as defined in the Securities Act of
1933, as amended (the "1933 Act"); (ii) such Shares may not be transferred or
hypothecated unless, in the opinion of counsel to the Company, such transfer or
hypothecation would be in compliance with the registration provisions of the
1933 Act or pursuant to an exemption therefrom; and (iii) that the certificate
for the Shares so purchased may be inscribed with a legend to ensure compliance
with the 1933 Act. Optionee understands that the Shares will not be registered
under the 1933 Act, or under the laws of any jurisdiction. Optionee hereby
represents and warrants that Optionee, or through his advisers, is sophisticated
and experienced in financial business and investment matters and, as a result,
Optionee is in a position to evaluate the merits and risks of an investment in
the Company.

         7.  Method of Exercising Option.  Subject to the terms and conditions
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of this Agreement, the options may be exercised by providing the Company at the
Consummation Time with payment of the full option price of such Shares, and the
Company shall deliver a certificate or certificates representing such Shares as
soon as practicable after such payment shall be received. The certificate or
certificates for the Shares as to which an option shall have been so exercised
shall be registered in the name of the Optionee or permitted assignee and shall
be delivered to the Optionee or permitted assignee. All Shares that shall be
purchased upon the exercise of an option as provided herein shall be fully paid
and non-assessable. The Optionee shall not have the rights of a shareholder with
respect to the Shares covered by the options hereunder until the date of
issuance of a stock certificate to him for such Shares. No adjustment shall be
made for dividends or similar rights for which the record date is before the
date such stock certificate is issued.

         8.  No Obligation to Exercise Option.  The grant and  acceptance of the
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options hereunder imposes no obligation on the Optionee to exercise the options.

         9.  Amendments.  The  provisions of this  Agreement may not be amended,
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supplemented,  waived or  changed  orally,  but only by a writing  signed by the
party  as to whom  enforcement  of any such  amendment,  supplement,  waiver  or
modification is sought and making specific reference to this Agreement.


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         10.  Assignments.  Except as otherwise  provided herein, no party shall
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assign his or its rights and/or obligations  hereunder without the prior written
consent of each other party to this Agreement.

         11.  Further  Assurances.  The parties hereby agree from time to
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time to execute and deliver such further and other transfers, assignments and
documents and do all matters and things which may be convenient or necessary to
more effectively and completely carry out the intentions of this Agreement.

         12.  Binding Effect.  All of the terms and provisions of this 
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Agreement, whether so expressed or not, shall be binding upon, inure to the
benefit of, and be enforceable by the parties and their respective legal
representatives, successors and permitted assigns.

         13.  Notices. All notices,  requests,  consents and other 
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communications required or permitted under this Agreement shall be in writing
(including telex and telegraphic communication) and shall be (as elected by the
person giving such notice) hand delivered by messenger or courier service,
telecommunicated, or mailed (airmail if international) by registered or
certified mail (postage prepaid), return receipt requested, addressed to:

If to Optionee:

         Ronald G. Bizick, II
         822 Rambling Drive Circle
         West Palm Beach, Florida  33414
         Telephone: (561) 791-0548

If to the Company:

         SBA Communications Corporation
         Attention: Steven E. Bernstein, President
         6001 Broken Sound Parkway, Suite 404
         Boca Raton, Florida 33487
         Telephone: (561) 995-7670
         Telefax: (561) 995-7626

or to such other address as any party may designate by notice complying with the
terms of this  Section.  Each such notice shall be deemed  delivered  (a) on the
date delivered if by personal  delivery;  (b) on the date of  transmission  with
confirmed  answer back if by electronic  transmission;  and (c) on the date upon
which the  return  receipt  is signed or  delivery  is  refused or the notice is
designated by the postal authorities as not deliverable,  as the case may be, if
mailed.


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         14.  Headings.  The headings contained in this Agreement are for 
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convenience of reference only, and shall not limit or otherwise affect in any
way the meaning or interpretation of this Agreement.

         15.  Severability.  If any part of this Agreement or any other 
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Agreement entered into pursuant hereto is contrary to, prohibited by or deemed
invalid under applicable law or regulation, such provision shall be inapplicable
and deemed omitted to the extent so contrary, prohibited or invalid, but the
remainder hereof shall not be invalidated thereby and shall be given full force
and effect so far as possible. If any provision of this Agreement may be
construed in two or more ways, one of which would render the provision invalid
or otherwise voidable or unenforceable and another of which would render the
provision valid and enforceable, such provision shall have the meaning which
renders it valid and enforceable.

         16.  Survival. All covenants, agreements, representations and 
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warranties made herein or otherwise made in writing by any party pursuant hereto
shall survive the execution and delivery of this Agreement and the consummation
of the transactions contemplated hereby.

         17.  Waivers.  The failure or delay of any party at any time to require
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performance by another party of any provision of this Agreement,  even if known,
shall  not  affect  the  right of such  party  to  require  performance  of that
provision or to exercise any right, power or remedy hereunder, and any waiver by
any  party of any  breach  of any  provision  of this  Agreement  should  not be
construed as a waiver of any continuing or succeeding  breach of such provision,
a waiver of the  provision  itself,  or a waiver of any  right,  power or remedy
under this Agreement.  No notice to or demand on any party in any case shall, of
itself,  entitle such party to any other or further  notice or demand in similar
or other circumstances.

         18.  Jurisdiction and Venue. The parties acknowledge that a substantial
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portion of negotiations, anticipated performance and execution of this Agreement
occurred  or shall occur in Palm Beach  County,  Florida,  and that,  therefore,
without limiting the jurisdiction or venue of any other federal or state courts,
each of the parties  irrevocably and  unconditionally  (i) agrees that any suit,
action or legal  proceeding  arising out of or relating to this Agreement may be
brought in the courts of record of the State of Florida in Palm Beach  County or
the court of the United States,  Southern District of Florida;  (ii) consents to
the  jurisdiction  of each such court in any suit,  action or proceeding;  (iii)
waives any objection  which it may have to the laying of venue of any such suit,
action or proceeding in any of such courts;  and (iv) agrees that service of any
court  paper  may be  effected  on such  party  by  mail,  as  provided  in this
Agreement,  or in such other manner as may be provided under  applicable laws or
court rules in said state.

         19.  Enforcement Costs. If any civil action,  arbitration or other
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legal proceeding is brought for the enforcement of this Agreement, or because of
an alleged dispute, breach, default or misrepresentation in connection with any
provision of this Agreement, the successful or prevailing party or parties shall
be entitled to recover reasonable attorneys' fees, sales and use taxes, court
costs and all expenses even if not taxable as court costs (including, without
limitation, all such fees, taxes,

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costs  and  expenses   incident  to  arbitration,   appellate,   bankruptcy  and
post-judgment proceedings),  incurred in that civil action, arbitration or legal
proceeding,  in addition to any other  relief to which such party or parties may
be entitled. Attorneys' fees shall include, without limitation,  paralegal fees,
investigative  fees,  administrative  costs,  sales  and use taxes and all other
charges billed by the attorney to the prevailing party.

         20. Remedies Cumulative. No remedy herein conferred upon any party
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is intended to be exclusive of any other remedy, and each and every such remedy
shall be cumulative and shall be in addition to every other remedy given
hereunder or now or hereafter existing at law or in equity or by statute or
otherwise. No single or partial exercise by any party of any right, power or
remedy hereunder shall preclude any other or further exercise thereof.

         21.  Governing Law.  This Agreement and all transactions contemplated 
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by this Agreement shall be governed by, and construed and enforced in accordance
with, the laws of the State of Florida.

         22.  Entire Agreement.  This   Agreement   represents   the  entire
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understanding  and  agreement  between the parties  with  respect to the subject
matter  hereof,  and  supersedes  all  other  negotiations,  understandings  and
representations (if any) made by and between such parties.

         IN WITNESS WHEREOF,  the parties have executed this Agreement as of the
date first above written.

                                          SBA COMMUNICATIONS CORPORATION

                                               /s/ Steven E. Bernstein
                                          By:______________________________
                                              Steven E. Bernstein, President

                                               /s/ Ronald G. Bizick, II
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                                               Ronald G. Bizick, II





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