Document:

Separation Agreement and Release

 Exhibit 10.2 
 SEPARATION AGREEMENT & RELEASE 
  
 MUST
BE RECEIVED BY Mark W. Krivoruchka, HUMAN RESOURCES DEPARTMENT, ON OR BEFORE AUGUST 4, 2003, by 4:30 p.m. C.S.T. 
  

	 	 	 TO BE COMPLETED BY HUMAN RESOURCES

		
	 	 	 RECEIVED
                                    
                

	 	 	                      Date
                            Initials

  
 In consideration for and under the
terms of the Separation Benefits Schedule (7/09/03) from Mark Krivoruchka (and attached to this Agreement), I, Steven H. Wood, voluntarily agree as follows: 
  

	1.	 	I, on behalf of myself, heirs, administrators, assigns and successors, release the Parties Released (as defined in paragraph 4) from any and all liability whatsoever for all claims,
demands, and causes of action of every nature affecting me, which I may have or ever claim to have arising out of my employment by Maytag Corporation, its divisions, companies and subsidiaries (collectively referred to as the “Company”)
including, but not limited to my recruitment, selection, retention, payment of compensation, employee benefits, termination or retirement, with the exception of: 

  

	 	(a)	 	My rights under the Maytag Corporation Employees Retirement Plan and Salary Savings Plan (including E.S.O.P.), which have accrued through the end of my employment with the Company;
and 

  

	 	(b)	 	Rights or claims that arise after the date this Separation Agreement and Release (“Release”) is signed or rights that cannot be waived by law. 

  

	2.	 	Without limiting the generality of Section 1, I release the Parties Released from all claims, demands, and causes of action which were or could have been asserted under any legal
theory, statute or common law whatsoever, including, but not limited to, breach of any express or implied contract (whether intentional or otherwise); tort (whether negligent, reckless, intentional or otherwise); violation of public policy;
violation of any federal, state or local law, regulation or ordinance (including, but not limited to, the Civil Rights Acts of 1866, 1870, and 1871, as amended; Title VII of the Civil Rights Act of 1964, as amended; the Fair Labor Standards Act; the
Equal Pay Act of 1963, as amended; Executive Order 11246; the Americans with Disabilities Act of 1990, as amended; the Employee Retirement Income Security Act of 1974, as amended; the Worker Adjustment and Retraining Notification Act of 1988, as
amended; the Family and Medical Leave Act of 1993, as amended; all state and local civil rights or other employment-related laws of the state of my residence, the state and local civil rights laws of Iowa, the location of Maytag Corporation
headquarters; and any other United States federal, state or local laws. 

  

	3.	 	Without limiting the generality of Section 1, I also release the Parties Released from all claims, demands, and causes of action which could have been asserted under the Age
Discrimination in Employment Act (“ADEA”) of 1967, as amended, I warrant that I have been advised to consult with an attorney prior to executing this Release and that this Agreement represents my knowing and voluntary waiver of all claims
that might arise under the ADEA through and including the date this Separation Agreement & Release is executed. 

  

	4.	 	The Parties Released are the Company, its predecessors, successors, divisions, subsidiaries, committees, affiliates, and parent corporations; the insurers, administrators, trustees
and fiduciaries of any employee benefit plan maintained by or on behalf of any of the foregoing; the officers, 

	 	 
directors, employees and agents of any of the foregoing; and all other persons, firms and corporations acting on behalf of or on instructions from the
Company. 

  

	5.	 	Without limiting the generality of Section 1, I understand and agree that I am waiving my right to all relief based on any claim of any type whatsoever arising out of or related to
my employment or separation from employment with the Parties Released. If any claim is made by me or someone on my behalf with a state, federal or local civil rights agency such as the Equal Employment Opportunity Commission (“EEOC), I agree to
indemnify the Parties Released for any monies I (or the EEOC on my behalf) receive as a result of such claim. 

  

	6.	 	Without limiting the generality of Section 1, I acknowledge and agree that my release of claims extends to any claims which I may have against the Parties Released for
attorney’s fees, expenses and court costs (if any). I acknowledge that I am solely responsible for paying my attorney’s fees, expenses and court costs (if any). 

  

	7.	 	Without limiting the generality of Section 1, I understand and agree that my release extends to all claims which I do not know or suspect to exist in my favor and which, if known at
the time of executing this Separation Agreement & Release, may have materially affected this settlement with the Parties Released. 

  
 B. CONFIDENTIALITY AND COOPERATION 
  
 As additional consideration for the benefits which I will receive in accordance with the terms and conditions of this agreement, I agree to not disclose, use, publish, or
authorize anyone else to disclose, use or publish, any confidential or secret technical or non-technical business information pertaining to the Company, including any of their operations, without the express written consent of the Company. I further
agree to immediately return to the Company, unless otherwise agreed in writing, all confidential information and documents in whatever media or form in my possession or under my control. Confidential Information includes, but is not limited to,
short and long-range plans, product design and development plans, pricing and marketing strategies, promotional programs, manufacturing equipment and processes, sales and distribution networks, organization structure and personnel, and proprietary
or confidential information of third parties which is protected by non-disclosure agreements between the Company and any third party. 
  
 I further agree that the terms and provisions of this Agreement are confidential, as well as the circumstances and discussion leading to this Agreement, and shall not be
communicated in any manner to any person except to my spouse, attorney, tax advisor(s) or as required by court order. My spouse, attorney, and tax advisor will be advised that these matters are confidential as well. I will make myself available, as
may be requested, at mutually convenient times and places with respect to pending and future business or legal matters, arbitrations, governmental investigations, or other dispute resolutions relating to matters that arose during my employment. I
will be reimbursed for all reasonable out-of-pocket expenses and costs I may incur as a result of providing this assistance, upon receipt of proper documentation. 
  
 C. NON-COMPETE 
  
 Because I am privy to the foregoing Confidential Information and as additional consideration for the receipt of the benefits outlined in the Attachment, I agree to not
work as an employee, contractor, consultant, or otherwise for any competitor of the Company in any capacity similar to my employment with the Company or receive compensation from any such competitor prior to the end of two years following the end of
my employment with the Company, unless the Company consents to such work in writing, which consent will not be unreasonably withheld. 

 D. CONCLUSION 
  

	1.	 	I understand that execution of this Separation Agreement & Release does not relieve me of my obligation to honor and to abide by all terms of any prior agreements with the
Company including but not limited to agreements regarding Confidential Information, trade secrets, copyright, and covenants not to compete. I understand that any such prior agreements will remain in effect upon my execution of this Separation
Agreement & Release and that this Separation Agreement & Release only supersedes or replaces such prior agreements to the extent a provision or provisions herein are inconsistent with such prior agreements. 

  

	2.	 	This Separation Agreement & Release shall be subject to the substantive laws (without regard to the conflicts of laws provision) of the State of Iowa. I hereby consent to the
personal jurisdiction of any state or federal court within the same state as the particular Company facility at which I last worked or was last based. I also hereby waive any rights I may have to challenge the assertion of personal jurisdiction over
me by a court in that forum. 

  

	3.	 	In case any portion of this Separation Agreement & Release shall be held to be invalid or unenforceable, the same are intended to be severable, shall be construed to be
severable, and any such invalidity or unenforceability shall neither defeat nor impair the remaining provisions of this Separation Agreement & Release. 

  

	4.	 	I agree that neither the existence of this Separation Agreement & Release nor anything contained in this Separation Agreement & Release shall constitute an admission of any
liability on the part of the Parties Released; any and all such liability is expressly denied. 

  

	5.	 	I HAVE BEEN GIVEN A PERIOD OF TWENTY ONE DAYS WITHIN WHICH TO CONSIDER THIS SEPARATION AGREEMENT & RELEASE. I UNDERSTAND THAT I CAN REVOKE THIS AGREEMENT BY SENDING WRITTEN
NOTICE THAT I AM REVOKING MY RELEASE OF CLAIMS TO THE COMPANY’S HUMAN RESOURCE DEPARTMENT WITHIN SEVEN (7) CALENDAR DAYS AFTER I SUBMIT THIS SEPARATION AGREEMENT & RELEASE TO THE COMPANY. WRITTEN NOTICE OF REVOCATION MUST BE RECEIVED BY THE
COMPANY’S HUMAN RESOURCES DEPARTMENT WITHIN THE SEVEN (7) CALENDAR DAY PERIOD. IF I DO NOT REVOKE THIS AGREEMENT IT WILL BE EFFECTIVE IN FULL AFTER THE SEVEN (7) DAY PERIOD HAS EXPIRED. 

  

	7.	 	I AGREE THAT NO REPRESENTATION OF ANY FACT OR OPINION HAS BEEN MADE BY THE PARTIES RELEASED TO INDUCE ME TO SIGN THIS SEPARATION AGREEMENT & RELEASE, EXCEPT AS MADE IN THIS
SEPARATION AGREEMENT & RELEASE, AND I AGREE THAT THE PARTIES RELEASED HAVE MADE NO ADMISSIONS OF LIABILITY OF ANY SORT. 

  
 I HAVE READ THIS SEPARATION AGREEMENT & RELEASE, I UNDERSTAND ITS TERMS, AND I FREELY AND VOLUNTARILY SIGN IT. NO ONE HAS MADE ANY PROMISES OR
REPRESENTATIONS TO ME OTHER THAN WHAT IS REFERENCED IN THIS AGREEMENT. 
  
 THIS AGREEMENT INCLUDES A RELEASE. I ACKNOWLEDGE THAT THE COMPANY IS ADVISING ME TO CONSULT WITH AN ATTORNEY PRIOR TO EXECUTING THIS AGREEMENT. 

	 Signed this 30th day of July, 2003

	
	 /s/ Steven H. Wood

	 Steven H. Wood

  
 Attachment: 
 Separation Benefits Schedule (7/09/03) 

 July 9, 2003 
  
 SEPARATION BENEFITS SCHEDULE 
  
 This memorandum describes the following consideration for the execution of the Separation Agreement and Release: 
  
 Last Day at Work—Your assigned responsibilities as an employee of Maytag
Corporation will be discontinued effective July 31, 2003. That date is the effective date of separation. 
  
 Separation Benefits—Within two weeks after receipt of the signed Separation Agreement and Release, and should you not revoke your decision to sign within seven days, you will be paid a lump sum
payment in the amount of $273,000. This represents 12 months of base salary and is subject to required withholding. 
  
 Incentive Compensation—Within two weeks after receipt of the signed Separation Agreement and Release, and should you not revoke your decision to sign
within seven days, you will receive a lump-sum payment in the amount of $313,100, which represents an amount in lieu of your participation in the Performance Incentive Award and the Annual Incentive Compensation Plans. This amount will be subject to
withholding. 
  
 Savings/Stock Plans—You will have the
opportunity to request disbursement of all sums from the Maytag Corporation Salary Savings Plan, the Employee Stock Ownership Plan, the Employee Stock Purchase Plan, the Maytag Deferred Compensation Plan, or other similar plans (such as the Maytag
Stock Option Award Plan) as applicable under the particular plan requirements. Review these Plans carefully to determine applicable deadlines. You will have until May 1, 2005 to exercise your currently vested stock options at the original option
price. 
  
 Medical—Your medical and dental benefits will cease
at the end of the month in which the effective date of separation occurs. However, you will have the opportunity to continue medical coverage for an additional period of up to 18 months. Maytag will pay your COBRA premium for up to eighteen months
beginning in the month after your date of separation; however, these payments will cease if and when another firm offering equivalent benefits during this period employs you on a permanent basis during the 18 month period. It is your obligation to
inform Maytag of that event. 
  
 Long- Term
Disability—Long-Term Disability insurance terminates on your last day at work. 
  
 Life Insurance—Your group life insurance will be continued until 12/31/03. You should contact Ray Benning at 888-244-4947 to review your options with regard to your Corporate-sponsored life
insurance program. This benefit continuation will be taxable income to you. 
  
 Pension—Our records indicate that you are vested and that effective July 1, 2003, you chose to participate in the Cash Balance Plan. You will be receive a letter summarizing your options with pension from both the
Employees Retirement Plan (Qualified Plan) and the Supplemental Retirement Plan (SERP). 
  
 Vacation—You will also be paid for vacation and holidays accrued, but unused, through the effective date of separation. 
  
 Outplacement—You will have available the services of an outplacement consulting firm of your choice to assist you in your search for employment. Maytag
will pay reasonable fees charged by the 

 consulting firm, LeaderSource, up to $25,000, payable directly to the consultants. Maytag will reimburse you nominal out
of pocket traveling expenses on prior approval of follow-up visits. 
  
 Financial Counseling—You will be entitled to receive financial planning services according to Maytag’s Financial Planning Program up to a maximum of $10,000 during 2003. The value of this service will be considered
taxable income to you. 
  
 Tax Preparation—You will be provided
tax preparation service by a firm of your choice for the year 2003 at Maytag’s expense, up to a maximum of $2000. This will be taxable income to you. 
  
 Consigned Appliances—You may retain the appliances consigned to you under the Executive Appliance Test Program at no
charge. 
  

	
	 /s/ m.k.

	 Mark W. Krivoruchka

	 Senior Vice President, Human Resources

	 Maytag Corporation<PAGE>

                                                                   Exhibit 10.39

================================================================================

                                  $195,000,000

                                CREDIT AGREEMENT

                                      among

                          SBA TELECOMMUNICATIONS, INC.,
                                  as Borrower,

                               The Several Lenders
                        from Time to Time Parties Hereto,

                      GENERAL ELECTRIC CAPITAL CORPORATION,
                            as Administrative Agent,

                                       and

                        GECC CAPITAL MARKETS GROUP, INC.,
                         as Lead Arranger and Bookrunner

                             Dated as of May 9, 2003

================================================================================

<PAGE>

                                Table of Contents

<TABLE>
<CAPTION>
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                                                                                      ----
<S>             <C>                                                                  <C>
Section 1. DEFINITIONS...............................................................   1
        1.1.    Defined Terms........................................................   1
        1.2.    Other Definitional Provisions........................................  22

Section 2. AMOUNT AND TERMS OF COMMITMENTS...........................................  22
        2.1.    Term Loan Commitments................................................  22
        2.2.    Procedure for Term Loan Borrowing....................................  23
        2.3.    Repayment of Term Loans..............................................  23
        2.4.    Revolving Credit Commitments.........................................  25
        2.5.    Procedure for Revolving Credit Borrowing.............................  25
        2.6.    Repayment of Loans; Evidence of Debt.................................  25
        2.7.    Commitment Fees, etc.................................................  26
        2.8.    Optional Termination or Reduction of Revolving Credit Commitments....  26
        2.9.    Optional Prepayments.................................................  27
        2.10.   Mandatory Prepayments and Commitment Reductions......................  28
        2.11.   Conversion and Continuation Options..................................  31
        2.12.   Minimum Amounts and Maximum Number of Eurodollar Tranches............  32
        2.13.   Interest Rates and Payment Dates.....................................  32
        2.14.   Computation of Interest and Fees.....................................  33
        2.15.   Inability to Determine Interest Rate.................................  33
        2.16.   Pro Rata Treatment and Payments......................................  34
        2.17.   Requirements of Law..................................................  35
        2.18.   Taxes ...............................................................  36
        2.19.   Indemnity............................................................  38
        2.20.   Illegality...........................................................  38
        2.21.   Change of Lending Office.............................................  39
        2.22.   Conversion of Revolving Credit Loans.................................  39

Section 3. REPRESENTATIONS AND WARRANTIES............................................  39
        3.1.    Financial Condition..................................................  39
        3.2.    No Change............................................................  40
        3.3.    Corporate Existence; Compliance with Law.............................  40
        3.4.    Corporate Power; Authorization; Enforceable Obligations..............  41
        3.5.    No Legal Bar.........................................................  41
        3.6.    No Material Litigation...............................................  41
        3.7.    No Default...........................................................  41
        3.8.    Ownership of Property; Liens.........................................  42
        3.9.    Intellectual Property................................................  42
        3.10.   Taxes ...............................................................  42
        3.11.   Federal Regulations..................................................  42
        3.12.   Labor Matters........................................................  42
        3.13.   ERISA ...............................................................  42
        3.14.   Investment Company Act; Other Regulations............................  43
</TABLE>

                                       -i-

<PAGE>

<TABLE>
<CAPTION>
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                                                                                      ----
<S>             <C>                                                                    <C>
        3.15.   Subsidiaries.........................................................  43
        3.16.   Use of Proceeds......................................................  43
        3.17.   Environmental Matters................................................  43
        3.18.   Accuracy of Information, etc.........................................  45
        3.19.   Security Documents...................................................  45
        3.20.   Solvency.............................................................  45
        3.21.   Real Property Leases.................................................  46
        3.22.   FCC and FAA Matters; State Regulatory Compliance.....................  46
        3.23.   "Build to Suit" Obligations..........................................  46

Section 4. CONDITIONS PRECEDENT......................................................  46
        4.1.    Conditions to Initial Extension of Credit............................  46
        4.2.    Conditions to Each Extension of Credit...............................  49

Section 5. AFFIRMATIVE COVENANTS.....................................................  50
        5.1.    Financial Statements.................................................  50
        5.2.    Certificates; Other Information......................................  50
        5.3.    Payment of Obligations...............................................  52
        5.4.    Conduct of Business and Maintenance of Existence, etc................  52
        5.5.    Maintenance of Property; Insurance...................................  52
        5.6.    Inspection of Property; Books and Records; Discussions...............  55
        5.7.    Notices..............................................................  56
        5.8.    Environmental Laws...................................................  56
        5.9.    Additional Collateral, etc...........................................  57
        5.10.   Further Assurances...................................................  59
        5.11.   Maintenance of Separate Existence....................................  59
        5.12.   Mortgages............................................................  61

Section 6. NEGATIVE COVENANTS........................................................  61
        6.1.    Financial Condition Covenants........................................  61
        6.2.    Limitation on Indebtedness...........................................  62
        6.3.    Limitation on Liens..................................................  63
        6.4.    Limitation on Fundamental Changes....................................  64
        6.5.    Limitation on Disposition of Property................................  64
        6.6.    Limitation on Restricted Payments....................................  65
        6.7.    Limitation on Capital Expenditures...................................  66
        6.8.    Limitation on Investments............................................  67
        6.9.    Limitation on Modifications of Certain Documents.....................  67
        6.10.   Limitation on Transactions with Affiliates...........................  68
        6.11.   Limitation on Sales and Leasebacks...................................  68
        6.12.   Limitation on Negative Pledge Clauses................................  68
        6.13.   Limitation on Restrictions on Subsidiary Distributions...............  68
        6.14.   Limitation on Lines of Business......................................  68
        6.15.   Limitation on Hedge Agreements.......................................  69
        6.16.   Limitation on Changes in Fiscal Periods..............................  69
        6.17.   Mortgage Requirement.................................................  69
        6.18.   Limitation on Non-Qualified Towers...................................  69
</TABLE>

                                      -ii-

<PAGE>

<TABLE>
<CAPTION>
                                                                                      Page
                                                                                      ----
<S>             <C>                                                                    <C>
Section 7. EVENTS OF DEFAULT.........................................................  69

Section 8. THE ADMINISTRATIVE AGENT..................................................  72
        8.1.    Appointment..........................................................  72
        8.2.    Delegation of Duties.................................................  73
        8.3.    Exculpatory Provisions...............................................  73
        8.4.    Reliance by the Administrative Agent.................................  73
        8.5.    Notice of Default....................................................  73
        8.6.    Non-Reliance on the Administrative Agent and Other Lenders...........  74
        8.7.    Indemnification......................................................  74
        8.8.    The Administrative Agent in Its Individual Capacity..................  75
        8.9.    Successor Agent......................................................  75
        8.10.   Authorization to Release Liens.......................................  75
        8.11.   The Arranger.........................................................  75

Section 9. MISCELLANEOUS.............................................................  76
        9.1.    Amendments and Waivers...............................................  76
        9.2.    Notices..............................................................  77
        9.3.    No Waiver; Cumulative Remedies.......................................  77
        9.4.    Survival of Representations and Warranties...........................  78
        9.5.    Payment of Expenses..................................................  78
        9.6.    Successors and Assigns; Participations and Assignments...............  79
        9.7.    Adjustments; Set-off.................................................  81
        9.8.    Counterparts.........................................................  82
        9.9.    Severability.........................................................  82
        9.10.   Integration..........................................................  82
        9.11.   GOVERNING LAW........................................................  82
        9.12.   Submission To Jurisdiction; Waivers..................................  82
        9.13.   Acknowledgments......................................................  83
        9.14.   Confidentiality; Public Disclosure...................................  83
        9.15.   Release of Collateral Security and Guarantee Obligations.............  84
        9.16.   Accounting Changes...................................................  85
        9.17.   WAIVERS OF JURY TRIAL................................................  85
        9.18.   Subordination, Non-Disturbance and Attornment........................  85
</TABLE>

                                      -iii-

<PAGE>

ANNEXES:

A            Procedures for Satisfying Mortgage Requirement

SCHEDULES:
1.1A         Commitments
1.1B         Mortgaged Properties
1.1C         Consolidated Cash EBITDA
2.2(b)       Accretion Schedule
3.4          Consents, Authorizations, Filings and Notices
3.15         Subsidiaries
3.19(a)      UCC Filing Jurisdictions
6.2(d)       Existing Indebtedness
6.2(f)       Seller Subordination Terms
6.3(f)       Existing Liens

EXHIBITS:

A            Form of Guarantee and Collateral Agreement
B            Form of Compliance Certificate
C            Form of Closing Certificate
D            Form of Assignment and Acceptance
E            Form of Legal Opinion of Gunster, Yoakley & Stewart, P.A.
F-1          Form of Term Note
F-2          Form of Revolving Credit Note
G            Form of Exemption Certificate
H-1          Form of Tower Mortgage
H-2          Form of Real Property Mortgage
I            Approved Forms of SNDA
J            Form of Prepayment Option Notice
K            Form of Reduction Option Notice

                                      -iv-

<PAGE>

          CREDIT AGREEMENT, dated as of May 9, 2003, among SBA
TELECOMMUNICATIONS, INC., a Florida corporation (the "Borrower"), the several
banks and other financial institutions or entities from time to time parties to
this Agreement (the "Lenders"), GECC CAPITAL MARKETS GROUP, INC., as advisor and
lead arranger and bookrunner (in such capacity, the "Arranger"), and GENERAL
ELECTRIC CAPITAL CORPORATION, as administrative agent (in such capacity, the
"Administrative Agent").

                              W I T N E S S E T H:

          WHEREAS, the Borrower has requested that the Lenders make a credit
facility available to it in the aggregate principal amount of $195,000,000 and
the Lenders are willing to make such credit facility available upon and subject
to the terms and conditions hereinafter set forth;

          NOW, THEREFORE, in consideration of the premises and the agreements
hereinafter set forth, the parties hereto hereby agree as follows:

                             Section 1. DEFINITIONS

          1.1. Defined Terms. As used in this Agreement, the terms listed in
this Section 1.1 shall have the respective meanings set forth in this Section
1.1.

          "AAT Asset Sale": the Disposition of Towers and Tower sites (and any
     related assets) by the Seller Subsidiaries pursuant to the AAT Purchase
     Agreement.

          "AAT Indemnity Escrow Account": the escrow account created pursuant to
     Section 11.5 of the AAT Purchase Agreement.

          "AAT Indemnity Escrow Agreement": the Indemnity Escrow Agreement
     entered into pursuant to Section 11.5 of the AAT Purchase Agreement, as
     amended, supplemented or otherwise modified from time to time in accordance
     with Section 6.9(b).

          "AAT Initial Asset Sale": the sale by the Seller Subsidiaries to AAT
     Communications Corp. on or prior to June 30, 2003 of approximately 679
     Towers located in the western United States and Michigan contemplated to
     occur at the First Closing and the Second Closing (as each such term is
     defined in the AAT Purchase Agreement).

          "AAT Purchase Agreement": the Purchase and Sale Agreement, dated as of
     March 17, 2003, among SBA Properties, Inc., SBA Towers, Inc., SBA
     Properties Louisiana, LLC and AAT Communications Corp., as amended,
     supplemented or otherwise modified from time to time in accordance with
     Section 6.9(b).

          "Administrative Agent": as defined in the preamble hereto.

          "Affiliate": as to any Person, any other Person which, directly or
     indirectly, is in control of, is controlled by, or is under common control
     with, such Person. For purposes of this definition, "control" of a Person
     means the power, directly or indirectly, either to (a) vote 10% or more of
     the securities having ordinary voting power for the election of

<PAGE>

                                                                               2

     directors (or persons performing similar functions) of such Person or (b)
     direct or cause the direction of the management and policies of such
     Person, whether by contract or otherwise.

          "Aggregate Exposure": with respect to any Lender at any time, an
     amount equal to (a) until the Closing Date, the aggregate amount of such
     Lender's Commitments at such time and (b) thereafter, the sum of (i) the
     aggregate then unpaid principal amount of such Lender's Term Loans and (ii)
     the amount of such Lender's Revolving Credit Commitment then in effect or,
     if the Revolving Credit Commitments have been terminated, the amount of
     such Lender's Revolving Extensions of Credit then outstanding.

          "Aggregate Exposure Percentage": with respect to any Lender at any
     time, the ratio (expressed as a percentage) of such Lender's Aggregate
     Exposure at such time to the Aggregate Exposure of all Lenders at such
     time.

          "Aggregate Facility Amount": the sum of (a) the aggregate unpaid
     principal amount of the Term Loans then outstanding and (b) the Total
     Revolving Credit Commitments then in effect or, if the Revolving Credit
     Commitments have been terminated, the Total Revolving Extensions of Credit
     then outstanding.

          "Agreement": this Credit Agreement, as amended, supplemented or
     otherwise modified from time to time.

          "Annualized Cash EBITDA": for any fiscal quarter, Consolidated Cash
     EBITDA for such fiscal quarter most recently ended for which financial
     statements have been delivered pursuant to Section 5.1 multiplied by four.

          "Applicable Amount": on any date of determination:

               (i) prior to the Initial Mortgage Requirement Satisfaction Date,
          an amount equal (x) $25,000,000 minus (y) the sum of (without
          duplication) the aggregate amount of (a) Capital Expenditures (other
          than maintenance Capital Expenditures permitted pursuant to Section
          6.7(a)) and (b) Investments made pursuant to Section 6.8(f), in each
          case, made on or prior to such date of determination; and

               (ii) on and after the Initial Mortgage Requirement Satisfaction
          Date, an amount equal to the Cash Contribution Amount plus the
          remainder of (x) the lesser of:

          (a)  $132,000,000 and

          (b)  the aggregate net cash proceeds of the AAT Asset Sale received by
               the Borrower and its Subsidiaries minus $32,000,000,

          minus (y) the sum of (without duplication) the aggregate amount of (1)
          Capital Expenditures (other than maintenance Capital Expenditures
          permitted pursuant to

<PAGE>

                                                                               3

          Section 6.7(a)) and (2) Investments made pursuant to Section 6.8(f),
          in each case, made on or prior to such date of determination;

     provided that, with respect to any determination of the Applicable Amount,
     any Capital Expenditure made pursuant to clause (i)(y)(a) or (ii)(y)(a)
     above and any Investment made pursuant to clause (i)(y)(b) or (ii)(y)(b)
     above, shall be deemed to have been made first, from the Applicable Amount
     and, second, from other sources of the Borrower.

          "Applicable Margin": for each Type of Loan, the rate per annum set
     forth under the relevant column heading below:

                                              Base Rate Loans   Eurodollar Loans
                                              ---------------   ----------------
     Revolving Credit Loans                        3.00%              4.00%
     Term Loans                                    3.00%              4.00%

          "Approved Forms of SNDA": a Subordination and Non-Disturbance
     Agreement, substantially in one of the forms of Exhibit I hereto.

          "Asset Sale": any Disposition of Property or series of related
     Dispositions of Property (excluding any such Disposition permitted by
     clauses (b), (c), (d), (h), (i), (j) or (k) of Section 6.5) which yields
     gross proceeds to the Borrower or any of its Subsidiaries (valued at the
     initial principal amount thereof in the case of non-cash proceeds
     consisting of notes or other debt securities and valued at fair market
     value in the case of other non-cash proceeds) in excess of $1,000,000.

          "Assignee": as defined in Section 9.6(c).

          "Assignor": as defined in Section 9.6(c).

          "Available Revolving Credit Commitment": as to any Revolving Credit
     Lender at any time, an amount equal to the excess, if any, of (a) such
     Lender's Revolving Credit Commitment then in effect over (b) such Lender's
     Revolving Extensions of Credit then outstanding.

          "Base Rate": for any day, a rate per annum (rounded upwards, if
     necessary, to the next 1/16 of 1%) equal to the greater of (a) the Prime
     Rate in effect on such day and (b) the Federal Funds Effective Rate in
     effect on such day plus 1/2 of 1%. For purposes hereof: "Prime Rate" shall
     mean the rate of interest per annum publicly announced from time to time by
     the Reference Lender as its prime rate in effect at its principal office in
     New York City (the Prime Rate not being intended to be the lowest rate of
     interest charged by the Reference Lender in connection with extensions of
     debt to debtors). Any change in the Base Rate due to a change in the Prime
     Rate or the Federal Funds Effective Rate shall be effective as of the
     opening of business on the effective day of such change in the Prime Rate
     or the Federal Funds Effective Rate, respectively.

          "Base Rate Loans": Loans (including PIK Term Loans) for which the
     applicable rate of interest is based upon the Base Rate.

<PAGE>

                                                                               4

          "Benefitted Lender": as defined in Section 9.7.

          "Board": the Board of Governors of the Federal Reserve System of the
     United States (or any successor).

          "Borrower": as defined in the preamble hereto.

          "Borrowing Date": any Business Day specified by the Borrower as a date
     on which the Borrower requests the relevant Lenders to make Loans
     hereunder.

          "Business Day": (i) for all purposes other than as covered by clause
     (ii) below, a day other than a Saturday, Sunday or other day on which
     commercial banks in New York City are authorized or required by law to
     close and (ii) with respect to all notices and determinations in connection
     with, and payments of principal and interest on, Eurodollar Loans, any day
     which is a Business Day described in clause (i) and which is also a day for
     trading by and between banks in Dollar deposits in the interbank eurodollar
     market.

          "Capital Expenditures": for any period, with respect to any Person,
     the aggregate of all expenditures by such Person and its Subsidiaries for
     the acquisition or leasing (pursuant to a capital lease) of fixed or
     capital assets or additions to equipment (including replacements,
     construction costs, capitalized repairs and improvements during such
     period) which should be capitalized under GAAP on a consolidated balance
     sheet of such Person and its Subsidiaries.

          "Capital Lease Obligations": as to any Person, the obligations of such
     Person to pay rent or other amounts under any lease of (or other
     arrangement conveying the right to use) real or personal property, or a
     combination thereof, which obligations are required to be classified and
     accounted for as capital leases on a balance sheet of such Person under
     GAAP, and, for the purposes of this Agreement, the amount of such
     obligations at any time shall be the capitalized amount thereof at such
     time determined in accordance with GAAP.

          "Capital Stock": any and all shares, interests, participations or
     other equivalents (however designated) of capital stock of a corporation,
     any and all equivalent ownership interests in a Person (other than a
     corporation) and any and all warrants, rights or options to purchase any of
     the foregoing.

          "Cash Contribution Amount": on any date of determination, an amount
     equal to the excess, if any, of (i) the aggregate amount of net cash
     proceeds from the issuance of any Capital Stock and the incurrence of any
     Indebtedness of Holdings contributed as cash by Holdings to the equity of
     the Borrower during the term of this Agreement over (ii) the aggregate
     amount of Restricted Payments made by the Borrower to Holdings on or prior
     to such date of determination (other than pursuant to Section 6.6(c)(iv)),
     provided that, with respect to any determination of the Cash Contribution
     Amount, any Restricted Payment made pursuant to clause (ii) above shall be
     deemed to have been made first, from the Cash Contribution Amount, until
     such amount has been reduced to zero, and, second, from the Applicable
     Amount.

<PAGE>

                                                                               5

          "Cash Equivalents": (a) marketable direct obligations issued by, or
     unconditionally guaranteed by, the United States Government or issued by
     any agency thereof and backed by the full faith and credit of the United
     States, in each case maturing within one year from the date of acquisition;
     (b) certificates of deposit, time deposits, eurodollar time deposits or
     overnight bank deposits having maturities of six months or less from the
     date of acquisition issued by any Lender or by any commercial bank
     organized under the laws of the United States of America or any state
     thereof having combined capital and surplus of not less than $500,000,000;
     (c) commercial paper of an issuer rated at least A-2 by Standard & Poor's
     Ratings Services ("S&P") or P-2 by Moody's Investors Service, Inc.
     ("Moody's"), or carrying an equivalent rating by a nationally recognized
     rating agency, if both of the two named rating agencies cease publishing
     ratings of commercial paper issuers generally, and maturing within six
     months from the date of acquisition; (d) repurchase obligations of any
     Lender or of any commercial bank satisfying the requirements of clause (b)
     of this definition, having a term of not more than 30 days with respect to
     securities issued or fully guaranteed or insured by the United States
     government; (e) securities with maturities of one year or less from the
     date of acquisition issued or fully guaranteed by any state, commonwealth
     or territory of the United States, by any political subdivision or taxing
     authority of any such state, commonwealth or territory or by any foreign
     government, the securities of which state, commonwealth, territory,
     political subdivision, taxing authority or foreign government (as the case
     may be) are rated at least A by S&P or A by Moody's; (f) securities with
     maturities of six months or less from the date of acquisition backed by
     standby letters of credit issued by any Lender or any commercial bank
     satisfying the requirements of clause (b) of this definition; or (g) shares
     of money market mutual or similar funds which invest exclusively in assets
     satisfying the requirements of clauses (a) through (f) of this definition.

          "Closing Date": the date on which the conditions precedent set forth
     in Section 4.1 were satisfied, which date occurred on May 9, 2003.

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

          "Collateral": all Property of the Loan Parties, now owned or hereafter
     acquired, upon which a Lien is purported to be created by any Security
     Document.

          "Commitment": as to any Lender, the sum of the Term Loan Commitment
     and the Revolving Credit Commitment of such Lender.

          "Commitment Fee Rate": With respect to the Revolving Credit Facility,
     a rate per annum equal to, (a) if the Borrower has not delivered a Notice
     of Extension of Conversion Date, 1.00%, or (b) if the Borrower has
     delivered a Notice of Extension of Conversion Date, (x) for the period
     beginning on the Closing Date to and including December 31, 2003, 1.00% and
     (y) for the period beginning on January 1, 2004 to and including the
     Conversion Date, 4.00%, plus, the PIK Rate.

          "Commonly Controlled Entity": an entity, whether or not incorporated,
     which is under common control with the Borrower within the meaning of
     Section 4001 of ERISA

<PAGE>

                                                                               6

     or is part of a group that includes the Borrower and that is treated as a
     single employer under Section 414 of the Code.

          "Compliance Certificate": a certificate duly executed by a Responsible
     Officer substantially in the form of Exhibit B.

          "Communications Act": 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 may be in effect from time to time.

          "Consolidated Cash EBITDA": for any period, Consolidated Net Income
     for such period plus, without duplication and to the extent reflected as a
     charge in the statement of such Consolidated Net Income for such period,
     the sum of (a) Consolidated Interest Expense, (b) depreciation,
     amortization and accretion expense, (c) income tax expense, (d)
     extraordinary, unusual or non-recurring expenses or losses, (e)
     restructuring charges in an amount not to exceed $5,000,000 during the term
     of this Agreement, (f) impairment charges related to non-cash write downs
     on Towers and other assets, (g) expenses or losses from "discontinuation of
     operations" accounting treatment (whether or not includable as a separate
     item in the statement of such Consolidated Net Income for such period), (h)
     other non-cash expenses and (i) any expense which was included in
     Consolidated Net Income for such period resulting from GAAP
     "straight-lining" pertaining to ground leases, and minus, to the extent
     included in the statement of Consolidated Net Income for such period, the
     sum of (a) extraordinary, unusual or non-recurring income or gains, (b)
     income or gains from "discontinuation of operations" accounting treatment
     (whether or not includable as a separate item in the statement of such
     Consolidated Net Income for such period), (c) income tax benefits, (d)
     other non-cash income, all as determined on a consolidated basis, (e) the
     amount of Restricted Payments made by the Borrower to Holdings to pay
     corporate selling, general and administrative expenses paid during such
     period (whether or not includable as a separate item in the statement of
     such Consolidated Net Income for such period), and (f) any non-cash income
     which was included in Consolidated Net Income for such period as a result
     of GAAP "straight-lining" pertaining to tenant leases; provided that, for
     purposes of calculating Consolidated Cash EBITDA for any period, the
     Consolidated Cash EBITDA of any Person or Property Disposed of by the
     Borrower or its Subsidiaries during such period shall be excluded for such
     period (assuming the consummation of such Disposition and the repayment of
     any Indebtedness in connection therewith occurred on the first day of such
     period). It is understood and agreed that Consolidated Cash EBITDA shall be
     calculated substantially as set forth on Schedule 1.1C.

          "Consolidated Cash Interest Expense": for any period, total net cash
     interest expense of the Borrower and its Subsidiaries for such period with
     respect to all outstanding Indebtedness of the Borrower and its
     Subsidiaries (including, without limitation, all commissions, discounts and
     other fees and charges owed with respect to letters of credit and bankers'
     acceptance financing and net costs under Hedge Agreements in respect of
     interest rates to the extent such net costs are allocable to such period in
     accordance with GAAP).

<PAGE>

                                                                               7

          "Consolidated Fixed Charge Coverage Ratio": for any period, the ratio
     of (a) Consolidated Cash EBITDA for such period to (b) Consolidated Fixed
     Charges for such period.

          "Consolidated Fixed Charges": for any period, the sum (without
     duplication) of (a) Consolidated Interest Expense for such period, (b)
     provision for cash income taxes made by Holdings, the Borrower or any of
     its Subsidiaries on a consolidated basis in respect of such period, (c)
     scheduled payments made during such period on account of principal of
     Indebtedness of the Borrower or any of its Subsidiaries (including
     scheduled principal payments in respect of the Term Loans) and (d) Capital
     Expenditures for such period other than any amounts used to build Towers or
     acquire any Qualified Tower Portfolio.

          "Consolidated Interest Expense": for any period, total net interest
     expense (including any interest payable hereunder as a PIK Term Loan) of
     the Borrower and its Subsidiaries for such period with respect to all
     outstanding Indebtedness of the Borrower and its Subsidiaries (including,
     without limitation, all commissions, discounts and other fees and charges
     owed with respect to letters of credit and bankers' acceptance financing
     and net costs under Hedge Agreements in respect of interest rates to the
     extent such net costs are allocable to such period in accordance with
     GAAP).

          "Consolidated Net Income": for any period, the consolidated net income
     (or loss) of the Borrower and its Subsidiaries, determined on a
     consolidated basis in accordance with GAAP; provided that there shall be
     excluded (a) the income (or deficit) of any Person accrued prior to the
     date it becomes a Subsidiary of the Borrower or is merged into or
     consolidated with the Borrower or any of its Subsidiaries, (b) the income
     (or deficit) of any Person (other than a Subsidiary of the Borrower) in
     which the Borrower or any of its Subsidiaries has an ownership interest,
     except to the extent that any such income is actually received by the
     Borrower or such Subsidiary in the form of dividends or similar
     distributions and (c) the undistributed earnings of any Subsidiary of the
     Borrower to the extent that the declaration or payment of dividends or
     similar distributions by such Subsidiary is not at the time permitted by
     the terms of any Contractual Obligation (other than under any Loan
     Document) or Requirement of Law applicable to such Subsidiary; provided,
     that Consolidated Net Income shall include income from Excluded Entities
     only to the extent that such income is actually received by the Borrower
     and its Subsidiaries in cash.

          "Consolidated Total Debt": at any date, the aggregate principal amount
     of all Indebtedness of the Borrower and its Subsidiaries at such date,
     determined on a consolidated basis in accordance with GAAP.

          "Contractual Obligation": as to any Person, any provision of any
     security issued by such Person or of any agreement, instrument or other
     undertaking to which such Person is a party or by which it or any of its
     Property is bound.

          "Conversion Date" means the Original Conversion Date, unless the
     Borrower exercises the option to extend the Original Conversion Date in
     accordance with

<PAGE>

                                                                               8

     Section 2.22(b), in which case the Conversion Date shall be the date
     indicated as such in the Notice of Extension of Conversion Date.

          "Default": any of the events specified in Section 7, whether or not
     any requirement for the giving of notice, the lapse of time, or both, has
     been satisfied.

          "Derivatives Counterparty": as defined in Section 6.6.

          "Disposition": with respect to any Property, any sale, lease, sale and
     leaseback, assignment, conveyance, transfer or other disposition thereof;
     and the terms "Dispose" and "Disposed of" shall have correlative meanings.

          "Disqualified Lender": any Lender which is a Disqualified Party.

          "Disqualified Party": any Person which beneficially owns Senior
     Discount Notes or Senior Notes or any Affiliate of such Person (excluding
     General Electric Capital Corporation and Oak Hill Advisors, Inc. and their
     respective Affiliates).

          "Dollars" and "$": dollars in lawful currency of the United States of
     America.

          "Domestic Subsidiary": any Subsidiary of the Borrower organized under
     the laws of any jurisdiction within the United States of America.

          "Environmental Laws": any and all laws, rules, orders, regulations,
     statutes, ordinances, guidelines, codes, decrees, or other legally
     enforceable requirements (including, without limitation, common law) of any
     international authority or other Governmental Authority having jurisdiction
     over the Borrower, any Subsidiary of the Borrower or any Tower, regulating,
     relating to or imposing liability or standards of conduct concerning
     protection of the environment or of human health, or employee health and
     safety, as has been, is now, or may at any time hereafter be, in effect.

          "Environmental Permits": any and all permits, licenses, approvals,
     registrations, notifications, exemptions and any other authorization
     pursuant to any Environmental Law.

          "ERISA": the Employee Retirement Income Security Act of 1974, as
     amended from time to time.

          "Eurocurrency Reserve Requirements": for any day as applied to a
     Eurodollar Loan, the aggregate (without duplication) of the maximum 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 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 the Board) maintained by a
     member bank of the Federal Reserve System.

<PAGE>

                                                                               9

          "Eurodollar Base Rate": with respect to each day during each Interest
     Period pertaining to a Eurodollar Loan, the rate per annum determined on
     the basis of the rate for deposits in Dollars for a period equal to such
     Interest Period commencing on the first day of such Interest Period
     appearing on Page 3750 of the Telerate screen as of 11:00 A.M., London
     time, two Business Days prior to the beginning of such Interest Period. In
     the event that such rate does not appear on Page 3750 of the Telerate
     screen (or otherwise on such screen), the "Eurodollar Base Rate" for
     purposes of this definition shall be determined by reference to such other
     comparable publicly available service for displaying eurodollar rates as
     may be selected by the Administrative Agent or, in the absence of such
     availability, by reference to the rate at which the Reference Lender is
     offered Dollar deposits at or about 11:00 A.M., New York City time, two
     Business Days prior to the beginning of such Interest Period in the
     interbank eurodollar market where its eurodollar and foreign currency and
     exchange operations are then being conducted for delivery on the first day
     of such Interest Period for the number of days comprised therein.

          "Eurodollar Loans": Loans (including PIK Term Loans) the rate of
     interest applicable to which is based upon the Eurodollar Rate.

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

                                 Eurodollar Base Rate
                       ----------------------------------------
                       1.00 - Eurocurrency Reserve Requirements

          "Eurodollar Tranche": the collective reference to Eurodollar Loans the
     then current Interest Periods with respect to all of which begin on the
     same date and end on the same later date (whether or not such Eurodollar
     Loans shall originally have been made on the same day).

          "Event of Default": any of the events specified in Section 7, provided
     that any requirement for the giving of notice, the lapse of time, or both,
     has been satisfied.

          "Excluded Entities": SBA Brazil and SBA Netzwerk Services GmbH, a
     German corporation.

          "Excluded Foreign Subsidiaries": any Foreign Subsidiary in respect of
     which either (i) the pledge of all of the Capital Stock of such Subsidiary
     as Collateral or (ii) the guaranteeing by such Subsidiary of the
     Obligations, would, in the good faith judgment of the Borrower, result in
     adverse tax consequences to the Borrower.

          "Existing Credit Agreement": the Credit Agreement, dated as of June
     15, 2001 (as amended, supplemented or otherwise modified through the date
     hereof), among Holdings, the Borrower, the several lenders from time to
     time parties thereto, Lehman Brothers Inc. and Barclays Capital, as joint
     lead arrangers and bookrunners, Barclays Bank PLC, as syndication agent,
     and Lehman Commercial Paper Inc., as administrative agent.

<PAGE>

                                                                              10

          "FAA": the Federal Aviation Administration, and any successor agency
     of the United States Government exercising substantially equivalent powers.

          "Facility": each of (a) the Term Loan Commitments and the Term Loans
     made thereunder, the PIK Term Loans and the New Term Loans, if any (the
     "Term Loan Facility") and (b) the Revolving Credit Commitments and the
     extensions of credit made thereunder (the "Revolving Credit Facility").

          "FCC": the Federal Communications Commission, and any successor agency
     of the United States Government exercising substantially equivalent powers.

          "Federal Funds Effective Rate": for any day, the weighted average of
     the rates on overnight federal funds transactions with members of the
     Federal Reserve System arranged by federal funds brokers, as published on
     the next succeeding 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 the day of such transactions received by
     the Administrative Agent from three federal funds brokers of recognized
     standing selected by it.

          "First Closing": as defined in the AAT Purchase Agreement.

          "Foreign Subsidiary": any Subsidiary of the Borrower that is not a
     Domestic Subsidiary.

          "Funding Office": the office designated from time to time by the
     Administrative Agent, by written notice to the Borrower and the Lenders, as
     the Funding Office.

          "GAAP": generally accepted accounting principles in the United States
     of America as in effect from time to time, except that for purposes of
     Section 6.1, GAAP shall be determined on the basis of such principles in
     effect on the date hereof and consistent with those used in the preparation
     of the most recent audited financial statements referred to in Section
     3.1(b).

          "Governmental Authority": any nation or government, any state or other
     political subdivision thereof and any entity exercising executive,
     legislative, judicial, regulatory or administrative functions of or
     pertaining to government.

          "Guarantee and Collateral Agreement": the Guarantee and Collateral
     Agreement executed and delivered by Holdings, the Borrower and each
     Subsidiary Guarantor on the Closing Date, substantially in the form of
     Exhibit A, as the same may be amended, supplemented or otherwise modified
     from time to time.

          "Guarantee Obligation": as to any Person (the "guaranteeing person"),
     any obligation of (a) the guaranteeing person or (b) another Person
     (including, without limitation, any bank under any letter of credit) to
     induce the creation of which the guaranteeing person has issued a
     reimbursement, counterindemnity or similar obligation, in either case
     guaranteeing or in effect guaranteeing any Indebtedness, leases, dividends
     or other obligations (the "primary obligations") of any other third Person
     (the "primary

<PAGE>

                                                                              11

     obligor") in any manner, whether directly or indirectly, including, without
     limitation, any obligation of the guaranteeing person, whether or not
     contingent, (i) to purchase any such primary obligation or any Property
     constituting direct or indirect security therefor, (ii) to advance or
     supply funds (1) for the purchase or payment of any such primary obligation
     or (2) to maintain working capital or equity capital of the primary obligor
     or otherwise to maintain the net worth or solvency of the primary obligor,
     (iii) to purchase Property, securities or services primarily for the
     purpose of assuring the owner of any such primary obligation of the ability
     of the primary obligor to make payment of such primary obligation or (iv)
     otherwise to assure or hold harmless the owner of any such primary
     obligation against loss in respect thereof; provided, however, that the
     term Guarantee Obligation shall not include endorsements of instruments for
     deposit or collection in the ordinary course of business. The amount of any
     Guarantee Obligation of any guaranteeing person shall be deemed to be the
     lower of (a) an amount equal to the stated or determinable amount of the
     primary obligation in respect of which such Guarantee Obligation is made
     and (b) the maximum amount for which such guaranteeing person may be liable
     pursuant to the terms of the instrument embodying such Guarantee
     Obligation, unless such primary obligation and the maximum amount for which
     such guaranteeing person may be liable are not stated or determinable, in
     which case the amount of such Guarantee Obligation shall be such
     guaranteeing person's maximum reasonably anticipated liability in respect
     thereof as determined by the Borrower in good faith.

          "Hedge Agreements": all interest rate swaps, caps or collar agreements
     or similar arrangements entered into by the Borrower providing for
     protection against fluctuations in interest rates or currency exchange
     rates or the exchange of nominal interest obligations, either generally or
     under specific contingencies.

          "Holdings": SBA Communications Corporation, a Florida corporation.

          "Indebtedness": of any Person at any date, without duplication, (a)
     all indebtedness of such Person for borrowed money, (b) all obligations of
     such Person for the deferred purchase price of Property or services (other
     than current trade payables incurred in the ordinary course of such
     Person's business), (c) all obligations of such Person evidenced by notes,
     bonds, debentures or other similar instruments (other than performance
     bonds and other obligations of a like nature incurred in the ordinary
     course of such Person's business), (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 Capital Lease
     Obligations of such Person, (f) all obligations of such Person, contingent
     or otherwise, as an account party under acceptance, letter of credit or
     similar facilities, (g) all obligations of such Person, contingent or
     otherwise, to purchase, redeem, retire or otherwise acquire for value any
     Capital Stock of such Person, (h) all Guarantee Obligations of such Person
     in respect of obligations of the kind referred to in clauses (a) through
     (g) above, (i) all obligations of the kind referred to in clauses (a)
     through (h) above secured by (or for which the holder of such obligation
     has an existing right, contingent or otherwise, to be secured by) any Lien
     on Property (including, without limitation, accounts and contract

<PAGE>

                                                                              12

     rights) owned by such Person, whether or not such Person has assumed or
     become liable for the payment of such obligation, (j) for the purposes of
     Section 7(e) only, all obligations of such Person in respect of Hedge
     Agreements and (k) the liquidation value of any preferred Capital Stock of
     such Person or its Subsidiaries held by any Person other than such Person
     and its Wholly Owned Subsidiaries.

          "Indemnified Liabilities": as defined in Section 9.5.

          "Indemnitee": as defined in Section 9.5.

          "Initial Lenders": a collective reference to each of the Lenders named
     on Schedule 1.1A on the Closing Date or any of their respective Affiliates
     or Related Funds which holds any Commitments or Loans.

          "Initial Mortgage Requirement Satisfaction Date": the date on which
     the Borrower shall have executed and delivered first priority Mortgages
     covering Towers which during the fiscal quarter ended March 31, 2003
     contributed at least 80% of Total Tower Revenue, which date shall occur no
     later than July 31, 2003.

          "Insolvency": with respect to any Multiemployer Plan, the condition
     that such Plan is insolvent within the meaning of Section 4245 of ERISA.

          "Insolvent": pertaining to a condition of Insolvency.

          "Intellectual Property": the collective reference to all rights,
     priorities and privileges relating to intellectual property, whether
     arising under United States, multinational or foreign laws or otherwise,
     including, without limitation, copyrights, copyright licenses, patents,
     patent licenses, trademarks, trademark licenses, technology, know-how and
     processes, and all rights to sue at law or in equity for any infringement
     or other impairment thereof, including the right to receive all proceeds
     and damages therefrom.

          "Interest Payment Date": (a) as to any Base Rate Loan, the last day of
     each March, June, September and December to occur while such Base Rate Loan
     is outstanding and the final maturity date of such Loan, (b) as to any
     Eurodollar Loan having an Interest Period of three months or less, the last
     day of such Interest Period, (c) as to any Eurodollar Loan having an
     Interest Period longer than three months, each day which is three months,
     or a whole multiple thereof, after the first day of such Interest Period
     and the last day of such Interest Period and (d) as to any Loan (other than
     any Revolving Credit Loan that is a Base Rate Loan), the date of any
     repayment or prepayment made in respect thereof.

          "Interest Period": as to any Eurodollar Loan, (a) initially, the
     period commencing on the borrowing or conversion date, as the case may be,
     with respect to such Eurodollar Loan and ending one, two, three or six
     months thereafter, as selected by the Borrower in its notice of borrowing
     or notice of conversion, as the case may be, given with respect thereto;
     and (b) thereafter, each period commencing on the last day of the next
     preceding

<PAGE>

                                                                              13

     Interest Period applicable to such Eurodollar Loan and ending one, two,
     three or six months thereafter, as selected by the Borrower by irrevocable
     notice to the Administrative Agent not less than three Business Days prior
     to the last day of the then current Interest Period with respect thereto;
     provided that, all of the foregoing provisions relating to Interest Periods
     are subject to the following:

               (i) if any Interest Period would otherwise end on a day that is
          not a Business Day, such Interest Period shall be extended to the next
          succeeding Business Day unless the result of such extension would be
          to carry such Interest Period into another calendar month in which
          event such Interest Period shall end on the immediately preceding
          Business Day;

               (ii) any Interest Period in respect of Term Loans that would
          otherwise extend beyond the applicable final maturity date therefor
          shall end on such final maturity date;

               (iii) any Interest Period that begins on the last Business Day of
          a calendar month (or on a day for which there is no numerically
          corresponding day in the calendar month at the end of such Interest
          Period) shall end on the last Business Day of a calendar month; and

               (iv) the Borrower shall select Interest Periods so as not to
          require a payment or prepayment of any Eurodollar Loan during an
          Interest Period for such Loan.

          "Investments": as defined in Section 6.8.

          "Lenders": as defined in the preamble hereto.

          "Lien": any mortgage, pledge, hypothecation, assignment, deposit
     arrangement, encumbrance, lien (statutory or other), charge or other
     security interest or any preference, priority or other security agreement
     or preferential arrangement of any kind or nature whatsoever (including,
     without limitation, any conditional sale or other title retention agreement
     and any capital lease having substantially the same economic effect as any
     of the foregoing).

          "Loan": any loan made by any Lender pursuant to this Agreement.

          "Loan Documents": this Agreement, the Security Documents and the
     Notes.

          "Loan Parties": Holdings, the Borrower and each Subsidiary of the
     Borrower which is a party to a Loan Document.

          "Majority Facility Lenders": with respect to any Facility, the holders
     of more than 50% of the aggregate unpaid principal amount of Loans
     outstanding plus the aggregate amount of undrawn Commitments then in effect
     under such Facility.

<PAGE>

                                                                              14

          "Material Adverse Effect": a material adverse effect on (a) the
     business, assets, property, condition (financial or otherwise) or prospects
     of the Borrower and its Subsidiaries taken as a whole or (b) the validity
     or enforceability of this Agreement or any of the other Loan Documents or
     the rights or remedies of the Administrative Agent or the Lenders hereunder
     or thereunder, provided that, the determination of a Material Adverse
     Effect shall exclude the effects of (x) the AAT Asset Sale and (y) the sale
     or termination of the Services Business.

          "Material Environmental Loss": the collective reference to the
     following items arising out of any Environmental Law or any liabilities or
     obligations with respect to any Materials of Environmental Concern that
     either (i) exceed $1,000,000 individually, or $5,000,000 in the aggregate,
     or (ii) would have a Material Adverse Effect: (a) any costs to the Borrower
     and/or any of its Subsidiaries relating to investigative, removal, remedial
     or other response activities, compliance costs, compensatory damages,
     natural resource damages, punitive damages, fines, penalties and any
     associated engineering, legal and other professional fees (including
     without limitation, costs of defending or asserting any claim) in
     connection with any of the foregoing and (b) any other losses to the
     Borrower and/or its Subsidiaries; provided that any amounts expended for
     environmental site assessments pursuant to customary due diligence
     conducted in connection with the acquisition of towers and/or tower sites
     shall be excluded from the calculation of any Material Environmental Loss.

          "Materials of Environmental Concern": any gasoline or petroleum
     (including crude oil or any fraction thereof) or petroleum products,
     polychlorinated biphenyls, urea-formaldehyde insulation, asbestos, molds,
     pollutants, contaminants, radioactivity, radiofrequency radiation or any
     other radiation associated with or allegedly associated with the
     telecommunications business, and any other substances of any kind, whether
     or not any such substance is defined as hazardous or toxic under any
     Environmental Law, that is regulated pursuant to or could give rise to
     liability under any Environmental Law.

          "Maturity Date": December 31, 2007.

          "Mortgage Requirement": the requirement that there shall have been
     executed, and delivered to the appropriate recording offices (and maintain
     thereafter), (a) on the Closing Date, first priority Mortgages covering
     Towers which during the fiscal quarter ended March 31, 2003 contributed at
     least 34% of Total Tower Revenue, (b) on May 31, first priority Mortgages
     covering Towers which during the fiscal quarter ended March 31, 2003
     contributed at least 50% of Total Tower Revenue, (c) on June 30, 2003,
     first priority Mortgages covering Towers which during the quarter ended
     March 31, 2003 contributed at least 65% of Total Tower Revenue, (d) on July
     31, 2003, first priority Mortgages covering Towers which during the fiscal
     quarter ended March 31, 2003 contributed at least 80% of Total Tower
     Revenue and (e) within 60 days after the end of each fiscal quarter
     beginning with the quarter ended December 31, 2003, first priority
     Mortgages covering Towers which during such fiscal quarter most recently
     ended contributed at least 80% of Total Tower Revenue (all of the foregoing
     to be accomplished pursuant to the procedures set forth in Annex A),
     provided that, the determination of Total Tower Revenue and the Towers to
     be mortgaged pursuant to Sections 4.1(a)(iii)

<PAGE>

                                                                              15

     and 5.12 shall exclude Towers sold or to be sold pursuant to the AAT Asset
     Purchase Agreement and described on Schedule 5.1(f)(i)(A) thereto and any
     Replacement Assets, but excluding any Replaced Asset (as each term is
     defined in the AAT Purchase Agreement), in each case, with respect to any
     such Tower, until the date that is the earlier of (i) the date it has been
     determined that such Tower shall not be sold pursuant to the AAT Purchase
     Agreement and (ii) October 1, 2003.

          "Mortgaged Properties": the real properties upon which the
     Administrative Agent for the benefit of the Lenders has been or shall be
     granted a Lien pursuant to the Mortgages, including the real property set
     forth on Schedule 1.1B.

          "Mortgages": each of the mortgages, deeds to secure debt and deeds of
     trust made by any Loan Party in favor of, or for the benefit of, the
     Administrative Agent for the benefit of the Lenders, with respect to any
     fee or leasehold interest in any real property or fixtures constituting or
     consisting of Tower sites or Towers, substantially in the form of Exhibit
     H-1, or, with respect to any fee interest in real property other than Tower
     sites or Towers, substantially in the form of Exhibit H-2 (with such
     changes thereto as shall be advisable under the law of the jurisdiction in
     which such mortgage, deed to secure debt or deed of trust is to be
     recorded), as the same may be amended, supplemented or otherwise modified
     from time to time.

          "Multiemployer Plan": a Plan that is a multiemployer plan as defined
     in Section 4001(a)(3) of ERISA.

          "Net Cash Proceeds": (a) in connection with any Asset Sale or any
     Recovery Event, the proceeds thereof in the form of cash and Cash
     Equivalents (including any such proceeds received by way of deferred
     payment of principal pursuant to a note or installment receivable or
     purchase price adjustment receivable or otherwise, but only as and when
     received) of such Asset Sale or Recovery Event, net of attorneys' fees,
     accountants' fees, investment banking fees, amounts required to be applied
     to the repayment of Indebtedness secured by a Lien expressly permitted
     hereunder on any asset which is the subject of such Asset Sale or Recovery
     Event (other than any Lien pursuant to a Security Document) and other
     customary fees and expenses (including commissions, transfer taxes and
     other customary expenses) actually incurred in connection therewith and net
     of taxes paid or reasonably estimated to be payable as a result thereof
     (after taking into account any available tax credits or deductions and any
     tax sharing arrangements) and (b) in connection with any issuance or sale
     of equity securities or debt securities or instruments or the incurrence of
     loans, the cash proceeds received from such issuance or incurrence, net of
     attorneys' fees, investment banking fees, accountants' fees, underwriting
     discounts and commissions and other customary fees and expenses (including
     commissions, transfer taxes and other customary expenses) actually incurred
     in connection therewith.

          "New Term Loans": as defined in Section 2.22(a).

          "Non-Excluded Taxes": as defined in Section 2.18(a).

<PAGE>

                                                                              16

          "Non-U.S. Lender": as defined in Section 2.18(d).

          "Notes": the collective reference to any promissory note evidencing
     Loans.

          "Notice of Extension of Conversion Date": the notice delivered by the
     Borrower to the Administrative Agent pursuant to Section 2.22(b).

          "Obligations": the unpaid principal of and interest on (including,
     without limitation, interest accruing after the maturity of the Loans and
     interest accruing after the filing of any petition in bankruptcy, or the
     commencement of any insolvency, reorganization or like proceeding, relating
     to the Borrower, whether or not a claim for post-filing or post-petition
     interest is allowed in such proceeding) the Loans and all other obligations
     and liabilities of the Borrower to the Administrative Agent or to any
     Lender (or, in the case of Specified Hedge Agreements, any Affiliate of any
     Person that is or was Lender at the time such Specified Hedge Agreement was
     entered into), whether direct or indirect, absolute or contingent, due or
     to become due, or now existing or hereafter incurred, which may arise
     under, out of, or in connection with, this Agreement, any other Loan
     Document, any Specified Hedge Agreement or any other document made,
     delivered or given in connection herewith or therewith, whether on account
     of principal, interest, reimbursement obligations, fees, indemnities,
     costs, expenses (including, without limitation, all fees, charges and
     disbursements of counsel to the Administrative Agent or to any Lender that
     are required to be paid by the Borrower pursuant hereto) or otherwise.

          "Original Conversion Date": the date that is the earlier of (i)
     December 31, 2003 and (ii) the date that is 30 days after the final Closing
     (as defined in the AAT Purchase Agreement) to occur under the AAT Purchase
     Agreement.

          "Other Taxes": any and all present or future stamp or documentary
     taxes or any other excise or property taxes, charges or similar levies
     arising from any payment made hereunder or from the execution, delivery or
     enforcement of, or otherwise with respect to, this Agreement or any other
     Loan Document.

          "Participant": as defined in Section 9.6(b).

          "Payment Office": the office designated from time to time by the
     Administrative Agent, by written notice to the Borrower, as the Payment
     Office.

          "PBGC": the Pension Benefit Guaranty Corporation established pursuant
     to Subtitle A of Title IV of ERISA (or any successor).

          "Person": an individual, partnership, corporation, limited liability
     company, business trust, joint stock company, trust, unincorporated
     association, joint venture, Governmental Authority or other entity of
     whatever nature.

          "PIK Rate": a rate per annum equal to 3.50%.

          "PIK Term Loans": the Term Loans of each Lender made pursuant to
     Section 2.2(b).

<PAGE>

                                                                              17

          "Plan": at a particular time, any employee benefit plan that is
     covered by ERISA and in respect of which the Borrower or a Commonly
     Controlled Entity is (or, if such plan were terminated at such time, would
     under Section 4069 of ERISA be deemed to be) an "employer" as defined in
     Section 3(5) of ERISA.

          "Preferred Stock Purchase Rights": rights issued by Holdings to
     holders of its common stock to purchase its Series E Junior Participating
     Preferred Stock, par value $.01 per share, as such rights may be amended
     from time to time.

          "Pro Forma Balance Sheet": as defined in Section 3.1(a).

          "Pro Forma Debt Service": for any period, the sum (without
     duplication) of (a) estimated Consolidated Interest Expense of the Borrower
     and its Subsidiaries for the immediately succeeding four consecutive fiscal
     quarters (assuming no change in interest rates applicable to variable rate
     Indebtedness and after giving effect to any scheduled repayments during
     such four fiscal quarters) plus (b) scheduled payments to be made during
     the immediately succeeding four consecutive fiscal quarters on account of
     principal of Indebtedness of the Borrower or any of its Subsidiaries
     (including scheduled principal payments in respect of the Term Loans other
     than payments of principal under this Agreement due on the Maturity Date).

          "Projections": as defined in Section 5.2(c).

          "Property": any right or interest in or to property of any kind
     whatsoever, whether real, personal or mixed and whether tangible or
     intangible, including, without limitation, Capital Stock.

          "Qualified Tower": a Tower which has (a) at least one tenant leasing
     space on such Tower and (b) positive cash flow for a period of not less
     than four consecutive fiscal quarters.

          "Qualified Tower Portfolio": with respect to any acquisition, either
     (i) a Tower or group of Towers which has (a) an average of at least one
     tenant leasing space on each Tower and (b) on the date of such acquisition,
     positive cash flow on an average basis for the most recent fiscal quarter
     of the seller ended on or prior to such date or acquisition or (ii) a
     corporation or any other entity engaged primarily in the business of
     owning, developing, constructing, managing, leasing and/or operating any
     Tower or group of Towers referred to in clause (i) and/or leasing space
     thereon to tenants.

          "Recovery Event": any settlement of or payment in respect of any
     property or casualty insurance claim or any condemnation proceeding
     relating to any asset of the Borrower or any of its Subsidiaries which
     yields gross proceeds to the Borrower or any of its Subsidiaries in excess
     of $1,000,000.

          "Reference Lender": Deutsche Bank Trust Co. Americas or any successor
     agreed upon by the Administrative Agent and the Borrower.

          "Register": as defined in Section 9.6(d).

<PAGE>

                                                                              18

          "Regulation U": Regulation U of the Board as in effect from time to
     time.

          "Reinvestment Deferred Amount": with respect to any Reinvestment
     Event, the aggregate Net Cash Proceeds received by the Borrower or any of
     its Subsidiaries in connection therewith that are not applied to prepay the
     Term Loans or reduce the Revolving Credit Commitments pursuant to Section
     2.10(c) as a result of the delivery of a Reinvestment Notice.

          "Reinvestment Event": any Recovery Event in respect of which the
     Borrower has delivered a Reinvestment Notice.

          "Reinvestment Notice": a written notice executed by a Responsible
     Officer stating that no Default or Event of Default has occurred and is
     continuing and that the Borrower (directly or indirectly through a
     Subsidiary) intends and expects to use all or a specified portion of the
     Net Cash Proceeds of a Recovery Event to acquire assets useful in its
     business or make capitalized repairs and improvements with respect to such
     assets.

          "Reinvestment Prepayment Amount": with respect to any Reinvestment
     Event, the Reinvestment Deferred Amount relating thereto less any amount
     expended prior to the relevant Reinvestment Prepayment Date to acquire
     assets useful in the Borrower's business or make capitalized repairs and
     improvements with respect to such assets.

          "Reinvestment Prepayment Date": with respect to any Reinvestment
     Event, the earlier of (a) the date occurring 365 days after such
     Reinvestment Event and (b) the date on which the Borrower shall have
     determined not to, or shall have otherwise ceased to, acquire assets useful
     in the Borrower's business or make capitalized repairs and improvements
     with respect to such assets with all or any portion of the relevant
     Reinvestment Deferred Amount.

          "Related Fund": with respect to any Lender, any fund that (x) invests
     in commercial loans and (y) is managed or advised by the same investment
     advisor as such Lender, by such Lender or an Affiliate of such advisor.

          "Reorganization": with respect to any Multiemployer Plan, the
     condition that such plan is in reorganization within the meaning of Section
     4241 of ERISA.

          "Reportable Event": any of the events set forth in Section 4043(c) of
     ERISA, other than those events as to which the 30 day notice period is
     waived under subsections .27, .28, .29, .30, .31, .32, .34 or .35 of PBGC
     Reg.(S) 4043.

          "Required Initial Lenders": at any time, all of the Initial Lenders
     holding a Loan or a Revolving Credit Commitment at such time.

          "Required Lenders": at any time: (a) during any period when the
     Initial Lenders hold 66 2/3% or more of the Aggregate Facility Amount, the
     holders of more than 66 2/3% of the Aggregate Facility Amount, provided
     that, each vote of the Required Lenders pursuant to this clause (a) shall
     require the affirmative consent of each of the Initial Lenders and (b)
     during any period when the Initial Lenders hold less than 66 2/3% of the

<PAGE>

                                                                              19

     Aggregate Facility Amount, the holders of more than 50% of the Aggregate
     Facility Amount.

          "Requirement of Law": as to any Person, the Certificate of
     Incorporation and By-Laws or other organizational or governing documents of
     such Person, and any law, treaty, rule or regulation or determination of an
     arbitrator or a court or other Governmental Authority, in each case
     applicable to or binding upon such Person or any of its Property or to
     which such Person or any of its Property is subject.

          "Responsible Officer": the chief executive officer, president, chief
     financial officer, chief accounting officer or vice president of investor
     relations and/or capital markets of the Borrower, but in any event, with
     respect to financial matters, the chief financial officer of the Borrower
     or, during the period beginning on the Closing Date and ending 180 days
     thereafter, the chief executive officer of the Borrower.

          "Restricted Payments": as defined in Section 6.6.

          "Revolving Credit Commitment": as to any Lender, the obligation of
     such Lender, if any, to make Revolving Credit Loans, in an aggregate
     principal not to exceed the amount set forth under the heading "Revolving
     Credit Commitment" opposite such Lender's name on Schedule 1.1A. The
     original aggregate amount of the Total Revolving Credit Commitments is
     $100,000,000.

          "Revolving Credit Commitment Period": the period from and including
     the Closing Date to the Conversion Date.

          "Revolving Credit Lender": each Lender that has a Revolving Credit
     Commitment or that is the holder of Revolving Credit Loans.

          "Revolving Credit Loans": as defined in Section 2.4.

          "Revolving Credit Percentage": as to any Revolving Credit Lender at
     any time, the percentage which such Lender's Revolving Credit Commitment
     then constitutes of the Total Revolving Credit Commitments (or, at any time
     after the Revolving Credit Commitments shall have expired or terminated,
     the percentage which the aggregate amount of such Lender's Revolving
     Extensions of Credit then outstanding constitutes of the aggregate amount
     of the Revolving Extensions of Credit then outstanding).

          "Revolving Extensions of Credit": as to any Revolving Credit Lender at
     any time, an amount equal to the sum of the aggregate principal amount of
     all Revolving Credit Loans made by such Lender then outstanding.

          "SBA Brazil": SBA Telecommunicacoes do Brasil, LTDA, a company
     organized under the laws of Brazil.

          "SEC": the Securities and Exchange Commission (or successors thereto
     or an analogous Governmental Authority).

<PAGE>

                                                                              20

          "Second Closing": as defined in the AAT Purchase Agreement.

          "Security Documents": the collective reference to the Guarantee and
     Collateral Agreement, the Mortgages and all other security documents
     hereafter delivered to the Administrative Agent granting a Lien on any
     Property of any Person to secure the obligations and liabilities of any
     Loan Party under any Loan Document.

          "Seller Subsidiaries": SBA Properties, Inc., SBA Properties Louisiana
     LLC and SBA Towers, Inc. and each other Subsidiary of the Borrower that
     sells any Towers pursuant to the AAT Purchase Agreement.

          "Senior Discount Notes": the 12% Senior Discount Notes of Holdings due
     2008 in the initial aggregate face amount of $269,000,000 or any
     refinancing thereof, provided that, (x) the documents under which the
     Senior Discount Notes are refinanced shall have covenants not materially
     more restrictive than those applicable to the Indebtedness refinanced
     thereby, (y) no cash principal payment is due under such refinancing on or
     prior to June 30, 2008, and (z) the aggregate annual amount of cash
     payments of interest under such refinancing shall be less than or equal to
     the aggregate annual amount of cash payments of interest on the
     Indebtedness so refinanced.

          "Senior Notes": the 10.25% Senior Notes of Holdings due 2009 in the
     initial aggregate face amount of $500,000,000 or any refinancing thereof,
     provided that, (x) the documents under which the Senior Notes are
     refinanced shall have covenants not materially more restrictive than those
     applicable to the Indebtedness refinanced thereby, (y) no cash principal
     payment is due under such refinancing on or prior to June 30, 2008, and (z)
     the aggregate annual amount of cash payments of interest under such
     refinancing shall be less than or equal to the aggregate annual amount of
     cash payments of interest on the Indebtedness so refinanced.

          "Services Business": the site acquisition, site development and site
     construction businesses of the Borrower and its Subsidiaries.

          "Single Employer Plan": any Plan that is covered by Title IV of ERISA,
     but which is not a Multiemployer Plan.

          "Solvent": when used with respect to any Person, as of any date of
     determination, (a) the amount of the "present fair saleable value" of the
     assets of such Person will, as of such date, exceed the amount of all
     "liabilities of such Person, contingent or otherwise", as of such date, as
     such quoted terms are determined in accordance with applicable federal and
     state laws governing determinations of the insolvency of debtors, (b) the
     present fair saleable value of the assets of such Person will, as of such
     date, be greater than the amount that will be required to pay the liability
     of such Person on its debts as such debts become absolute and matured, (c)
     such Person will not have, as of such date, an unreasonably small amount of
     capital with which to conduct its business, and (d) such Person will be
     able to pay its debts as they mature. For purposes of this definition, (i)
     "debt" means liability on a "claim", and (ii) "claim" means any (x) right
     to payment, whether or not such a right is reduced to judgment, liquidated,
     unliquidated, fixed,

<PAGE>

                                                                              21

     contingent, matured, unmatured, disputed, undisputed, legal, equitable,
     secured or unsecured or (y) right to an equitable remedy for breach of
     performance if 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 or unmatured, disputed, undisputed, secured or
     unsecured.

          "Specified Hedge Agreement": any Hedge Agreement (a) entered into by
     (i) the Borrower or any of its Subsidiaries and (ii) any Lender or any
     Affiliate thereof, as counterparty and (b) which has been designated by
     such Lender and the Borrower, by notice to the Administrative Agent, as a
     Specified Hedge Agreement.

          "Subsidiary": as to any Person, a corporation, partnership, limited
     liability company or other entity of which shares of stock or other
     ownership interests having ordinary voting power (other than stock or such
     other ownership interests having such power only by reason of the happening
     of a contingency) to elect a majority of the board of directors or other
     managers of such corporation, partnership or other entity are at the time
     owned, or the management of which is otherwise controlled, directly or
     indirectly through one or more intermediaries, or both, by such Person (it
     being understood that an Excluded Entity shall not be a Subsidiary). Unless
     otherwise qualified, all references to a "Subsidiary" or to "Subsidiaries"
     in this Agreement shall refer to a Subsidiary or Subsidiaries of the
     Borrower.

          "Subsidiary Guarantor": each Subsidiary of the Borrower other than any
     Excluded Foreign Subsidiary.

          "Term Loans": the collective reference to (a) the Term Loans as
     defined in Section 2.1, (b) the New Term Loans and (c) the PIK Term Loans.

          "Term Loan Commitment": as to any Term Loan Lender, the obligation of
     such Lender, if any, to make a Term Loan to the Borrower hereunder in a
     principal amount not to exceed the amount set forth under the heading "Term
     Loan Commitment" opposite such Lender's name on Schedule 1.1A. The original
     aggregate amount of the Term Loan Commitments is $95,000,000.

          "Term Loan Facility": as defined in the definition of "Facility" in
     this Section 1.1.

          "Term Loan Lender": the collective reference to (a) each Lender that
     has a Term Loan Commitment or is the holder of a Term Loan and (b) each
     Revolving Credit Lender that becomes a Term Loan Lender pursuant to Section
     2.22(a).

          "Term Loan Percentage": as to any Term Loan Lender at any time, the
     percentage which such Lender's Term Loan Commitment then constitutes of the
     aggregate Term Loan Commitments.

          "Total Revolving Credit Commitments": at any time, the aggregate
     amount of the Revolving Credit Commitments then in effect.

<PAGE>

                                                                              22

          "Total Revolving Extensions of Credit": at any time, the aggregate
     amount of the Revolving Extensions of Credit of the Revolving Credit
     Lenders outstanding at such time.

          "Total Tower Revenue": for any period, the Borrower's revenue from all
     Towers for such period minus any non-cash income which was included in
     revenue for such period as a result of GAAP "straight-lining" pertaining to
     tenant leases.

          "Tower": any wireless transmission tower, and related assets that are
     located on the site of such wireless transmission tower, owned by the
     Borrower or any of its Subsidiaries or leased by the Borrower or any of its
     Subsidiaries pursuant to a lease required to be classified and accounted
     for as a capital lease on a balance sheet of the Borrower and its
     Subsidiaries under GAAP (other than any Managed Assets (as defined in the
     AAT Purchase Agreement)).

          "Transferee": as defined in Section 9.14.

          "Type": as to any Loan, its nature as a Base Rate Loan or a Eurodollar
     Loan.

          "Wholly Owned Subsidiary": as to any Person, any other Person all of
     the Capital Stock of which (other than directors' qualifying shares
     required by law) is owned by such Person directly and/or through other
     Wholly Owned Subsidiaries.

          "Wholly Owned Subsidiary Guarantor": any Subsidiary Guarantor that is
     a Wholly Owned Subsidiary of the Borrower.

          1.2. Other Definitional Provisions. (a) Unless otherwise specified
therein, all terms defined in this Agreement shall have the defined meanings
when used in the other Loan Documents or any certificate or other document made
or delivered pursuant hereto or thereto.

(b) As used herein and in the other Loan Documents, and any certificate or other
document made or delivered pursuant hereto or thereto, accounting terms relating
to Holdings, the Borrower and its Subsidiaries not defined in Section 1.1 and
accounting terms partly defined in Section 1.1, to the extent not defined, shall
have the respective meanings given to them under GAAP.

          (c) The words "hereof", "herein" and "hereunder" and words of similar
import when used in this Agreement shall refer to this Agreement as a whole and
not to any particular provision of this Agreement, and Section, Schedule and
Exhibit references are to this Agreement unless otherwise specified.

          (d) The meanings given to terms defined herein shall be equally
applicable to both the singular and plural forms of such terms.

                   Section 2. AMOUNT AND TERMS OF COMMITMENTS

          2.1. Term Loan Commitments. Subject to the terms and conditions
hereof, each Term Loan Lender severally agrees to make term loans (each, a "Term
Loan") to the

<PAGE>

                                                                              23

Borrower on the Closing Date in an aggregate amount not to exceed the amount of
the Term Loan Commitment of such Lender. The Term Loans may from time to time be
Eurodollar Loans or Base Rate Loans, as determined by the Borrower and notified
to the Administrative Agent in accordance with Sections 2.2 and 2.11.

          2.2. Procedure for Term Loan Borrowing. (a) The Borrower shall give
the Administrative Agent irrevocable notice (which notice must be received by
the Administrative Agent prior to 10:00 A.M., New York City time, one Business
Day prior to the anticipated Borrowing Date) requesting that the Term Loan
Lenders make the Term Loans on the proposed Borrowing Date and specifying the
amount to be borrowed. The Term Loans made on the Closing Date shall initially
be Base Rate Loans. Upon receipt of such notice the Administrative Agent shall
promptly notify each Term Loan Lender thereof. Not later than 12:00 Noon, New
York City time, on the proposed Borrowing Date each Term Loan Lender shall make
available to the Administrative Agent at the Funding Office an amount in
immediately available funds equal to the Term Loan or Term Loans to be made by
such Lender. The Administrative Agent shall make available to the Borrower the
aggregate of the amounts made available to the Administrative Agent by the Term
Loan Lenders in like funds.

          (b) Each Lender shall be deemed to have made a PIK Term Loan, (i) with
respect to the PIK Term Loans made pursuant to Section 2.7(a), on the last day
of each March, June, September and December and on the Conversion Date and (ii)
with respect to the PIK Term Loans made pursuant to Sections 2.13(a) and
2.13(b), on each Interest Payment Date, in each case, in the amounts and subject
to provisions of such Sections. Each PIK Term Loan shall initially be a Base
Rate Loan and may from time to time thereafter be Eurodollar Loans or Base Rate
Loans, as determined by the Borrower and notified to the Administrative Agent in
accordance with Section 2.11. It is understood and agreed that the PIK Term
Loans shall accrue interest as set forth in Section 2.13 (including accreting
substantially as set forth on Schedule 2.2(b), subject to the assumptions set
forth therein).

          2.3. Repayment of Term Loans. (a) In the event that the Borrower has
not delivered a Notice of Extension of Conversion Date, the Term Loan (other
than any PIK Term Loans) of each Term Loan Lender shall mature in consecutive
quarterly installments, commencing on March 31, 2004, each of which shall be in
an amount equal to (a) such Lender's Term Loan Percentage multiplied by an
amount equal to the aggregate amount of Term Loans (including New Term Loans, if
any) outstanding on March 31, 2004 multiplied by (b) the percentage set forth
below opposite such installment:

<PAGE>

                                                                              24

                          Percentage of
Quarterly Installment   Principal Amount
---------------------   ----------------

March 31, 2004                2.50%
June 30, 2004                 2.50%
September 30, 2004            2.50%
December 31, 2004             2.50%
March 31, 2005                3.75%
June 30, 2005                 3.75%
September 30, 2005            3.75%
December 31, 2005             3.75%
March 31, 2006                3.75%
June 30, 2006                 3.75%
September 30, 2006            3.75%
December 31, 2006             3.75%
March 31, 2007                5.00%
June 30, 2007                 5.00%
September 30, 2007            5.00%
December 31, 2007            45.00%

          (b) In the event that the Borrower has delivered a Notice of Extension
of Conversion Date, the Term Loan (other than any PIK Term Loans) of each Term
Loan Lender shall mature in consecutive quarterly installments, commencing on
June 30, 2004, each of which shall be in an amount equal to (i) such Lender's
Term Loan Percentage multiplied by an amount equal to the aggregate amount of
Term Loans (including New Term Loans, if any) outstanding on June 30, 2004
multiplied by (ii) the percentage set forth below opposite such installment:

                          Percentage of
Quarterly Installment   Principal Amount
---------------------   ----------------

June 30, 2004                 3.33%
September 30, 2004            3.33%
December 31, 2004             3.34%
March 31, 2005                3.75%
June 30, 2005                 3.75%
September 30, 2005            3.75%
December 31, 2005             3.75%
March 31, 2006                3.75%
June 30, 2006                 3.75%
September 30, 2006            3.75%
December 31, 2006             3.75%
March 31, 2007                5.00%
June 30, 2007                 5.00%
September 30, 2007            5.00%
December 31, 2007            45.00%

<PAGE>

                                                                              25

          (c) The PIK Term Loans shall mature on the Maturity Date.

          2.4. Revolving Credit Commitments. Subject to the terms and conditions
hereof, each Revolving Credit Lender severally agrees to make revolving credit
loans ("Revolving Credit Loans") to the Borrower from time to time during the
Revolving Credit Commitment Period in an aggregate principal amount at any one
time outstanding which does not exceed the amount of such Lender's Revolving
Credit Commitment. During the Revolving Credit Commitment Period the Borrower
may use the Revolving Credit Commitments by borrowing, prepaying the Revolving
Credit Loans in whole or in part, and reborrowing, all in accordance with the
terms and conditions hereof. The Revolving Credit Loans may from time to time be
Eurodollar Loans or Base Rate Loans, as determined by the Borrower and notified
to the Administrative Agent in accordance with Sections 2.5 and 2.11.

          2.5. Procedure for Revolving Credit Borrowing. The Borrower may borrow
under the Revolving Credit Commitments during the Revolving Credit Commitment
Period on any Business Day, provided that the Borrower shall give the
Administrative Agent irrevocable notice (which notice must be received by the
Administrative Agent prior to 12:00 Noon, New York City time, (a) three Business
Days prior to the requested Borrowing Date, in the case of Eurodollar Loans, or
(b) one Business Day prior to the requested Borrowing Date, in the case of Base
Rate Loans), specifying (i) the amount and Type of Revolving Credit Loans to be
borrowed, (ii) the requested Borrowing Date and (iii) in the case of Eurodollar
Loans, the length of the initial Interest Period therefor. The Revolving Credit
Loans made on the Closing Date shall initially be Base Rate Loans. Each
borrowing under the Revolving Credit Commitments shall be in an amount equal to
(x) in the case of Base Rate Loans, $1,000,000 or a whole multiple thereof (or,
if the then aggregate Available Revolving Credit Commitments are less than
$1,000,000, such lesser amount) and (y) in the case of Eurodollar Loans,
$2,500,000 or a whole multiple of $500,000 in excess thereof. Upon receipt of
any such notice from the Borrower, the Administrative Agent shall promptly
notify each Revolving Credit Lender thereof. Each Revolving Credit Lender will
make the amount of its pro rata share of each borrowing available to the
Administrative Agent for the account of the Borrower at the Funding Office prior
to 12:00 Noon, New York City time, on the Borrowing Date requested by the
Borrower in funds immediately available to the Administrative Agent. The
Administrative Agent shall make available to the Borrower the aggregate of the
amounts made available to the Administrative Agent by the Revolving Credit
Lenders in like funds as received by the Administrative Agent.

          2.6. Repayment of Loans; Evidence of Debt. (a) The Borrower hereby
unconditionally promises to pay to the Administrative Agent for the account of
the appropriate Lender (i) the principal amount of each Term Loan (other than
PIK Term Loans) of such Lender in installments according to the applicable
amortization schedule set forth in Section 2.3 and (ii) the principal amount of
each PIK Term Loan of such Lender as set forth in Section 2.3(c) (or, in each
case, such earlier date on which the Loans become due and payable pursuant to
Section 7). The Borrower hereby further agrees to pay interest on the unpaid
principal amount of the Loans from time to time outstanding from the date hereof
until payment in full thereof at the rates per annum, and on the dates, set
forth in Section 2.13.

          (b) Each Lender shall maintain in accordance with its usual practice
an account or accounts evidencing indebtedness of the Borrower to such Lender
resulting from each

<PAGE>

                                                                              26

Loan of such Lender from time to time, including the amounts of principal and
interest payable and paid to such Lender from time to time under this Agreement.

          (c) The Administrative Agent, on behalf of the Borrower, shall
maintain the Register pursuant to Section 9.6(d), and a subaccount therein for
each Lender, in which shall be recorded (i) the amount of each Loan made
hereunder and any Note evidencing such Loan, the Type thereof and each Interest
Period applicable thereto, (ii) the amount of any principal or interest due and
payable or to become due and payable from the Borrower to each Lender hereunder
and (iii) both the amount of any sum received by the Administrative Agent
hereunder from the Borrower and each Lender's share thereof.

          (d) The entries made in the Register and the accounts of each Lender
maintained pursuant to Section 2.6(b) shall, to the extent permitted by
applicable law, be prima facie evidence of the existence and amounts of the
obligations of the Borrower therein recorded; provided, however, that the
failure of any Lender or the Administrative Agent to maintain the Register or
any such account, or any error therein, shall not in any manner affect the
obligation of the Borrower to repay (with applicable interest) the Loans made to
such Borrower by such Lender in accordance with the terms of this Agreement.

          (e) The Borrower agrees that, upon the request to the Administrative
Agent by any Lender, the Borrower will execute and deliver to such Lender a
promissory note of the Borrower evidencing any Term Loans or Revolving Credit
Loans of such Lender, substantially in the forms of Exhibit F-1 or F-2,
respectively, with appropriate insertions as to date and principal amount.

          2.7. Commitment Fees, etc. (a) The Borrower agrees to pay to the
Administrative Agent for the account of each Revolving Credit Lender a
commitment fee for the period from and including the Closing Date to the last
day of the Revolving Credit Commitment Period, computed at the Commitment Fee
Rate on the average daily amount of the Available Revolving Credit Commitment of
such Lender during the period for which payment is made, payable quarterly in
arrears on the last day of each March, June, September, December and on the
Conversion Date, as the case may be, commencing on the first of such dates to
occur after the date hereof, provided that, the portion commitment fee payable
to each Revolving Credit Lender based on the PIK Rate shall be deemed to be a
PIK Term Loan made by such Lender to the Borrower pursuant to Section 2.2(b) on
each date that the commitment fee is payable hereunder.

          (b) The Borrower agrees to pay to the Administrative Agent the fees in
the amounts and on the dates from time to time agreed to in writing by the
Borrower and the Administrative Agent.

          2.8. Optional Termination or Reduction of Revolving Credit
Commitments. (a) The Borrower shall have the right, upon not less than three
Business Days' notice to the Administrative Agent, to terminate the Revolving
Credit Commitments or, from time to time, to reduce the amount of the Revolving
Credit Commitments; provided that no such termination or reduction of Revolving
Credit Commitments shall be permitted if, after giving effect thereto and to any
prepayments of the Revolving Credit Loans made on the effective date thereof,
the Total Revolving Extensions of Credit would exceed the Total Revolving Credit
Commitments. Any

<PAGE>

                                                                              27

such reduction shall be in an amount equal to $5,000,000, or a whole multiple of
$1,000,000 in excess thereof, and shall reduce permanently the Revolving Credit
Commitments then in effect.

          (b) The Borrower shall pay a fee in connection with each reduction of
the Revolving Credit Commitments under this Section in an amount equal to the
percentage set forth below, if reduced during the twelve-month period beginning
on May 9 of the years indicated below, multiplied by the amount of such
reduction:

Year                                               Percentage
----                                               ----------
2003............................................      4.0%
2004............................................      3.0%
2005............................................      2.0%
2006............................................      1.0%
2007............................................      0.0%

          2.9. Optional Prepayments. The Borrower may at any time and from time
to time prepay the Loans, in whole or in part, at the redemption prices
(expressed as percentages of the principal amount of the Loans) set forth below,
if redeemed during the twelve-month period beginning on May 9 of the years
indicated below:

Year                                               Percentage
----                                               ----------
2003............................................      104%
2004............................................      103%
2005............................................      102%
2006............................................      101%
2007 ...........................................      100%

; provided that, optional prepayments of Revolving Credit Loans without a
corresponding permanent reduction of the Revolving Credit Commitments may be
made at any time and from time to time without premium or penalty at a
redemption price equal to 100% of the Revolving Credit Loans to be prepaid prior
to the Conversion Date. The Borrower shall deliver irrevocable notice to the
Administrative Agent of any prepayment pursuant to this Section 2.9 at least
three Business Days prior thereto in the case of Eurodollar Loans and at least
one Business Day prior thereto in the case of Base Rate Loans, which notice
shall specify the date and amount of prepayment and whether the prepayment is of
Eurodollar Loans or Base Rate Loans; provided, that if a Eurodollar Loan is
prepaid on any day other than the last day of the Interest Period applicable
thereto, the Borrower shall also pay any amounts owing pursuant to Section 2.19.
Upon receipt of any such notice the Administrative Agent shall promptly notify
each relevant Lender thereof. If any such notice is given, the amount specified
in such notice shall be due and payable on the date specified therein, together
with (except in the case of Revolving Credit Loans that are Base Rate Loans)
accrued interest to such date on the amount prepaid. Optional partial
prepayments of Term Loans and Revolving Credit Loans shall be in an aggregate
principal amount of $5,000,000 or a whole multiple of $1,000,000 in excess
thereof.

<PAGE>

                                                                              28

          2.10. Mandatory Prepayments and Commitment Reductions. (a) If on any
date the Borrower or any of its Subsidiaries shall receive Net Cash Proceeds
from any Asset Sale, such Net Cash Proceeds shall be applied on or prior to the
30th day after such date toward the prepayment of the Term Loans and the
permanent reduction of the Revolving Credit Commitments in accordance with
Sections 2.10(e) and 2.16.

          (b) If on any date the Borrower or any of its Subsidiaries shall
receive Net Cash Proceeds from any Recovery Event then, unless a Reinvestment
Notice shall be delivered in respect of such Recovery Event, such Net Cash
Proceeds shall be applied on or prior to the 30th day after such date toward the
prepayment of the Term Loans and the permanent reduction of the Revolving Credit
Commitments in accordance with Sections 2.10(e) and 2.16; provided, that,
notwithstanding the foregoing, on each Reinvestment Prepayment Date, an amount
equal to the Reinvestment Prepayment Amount with respect to the relevant
Reinvestment Event shall be applied toward the prepayment of the Term Loans and
the reduction of the Revolving Credit Commitments in accordance with Sections
2.10(e) and 2.16.

          (c) If on any date, the Borrower or any of its Subsidiaries shall
receive Net Cash Proceeds from any Disposition pursuant to Section 6.5(h), (j)
or (k), then, such Net Cash Proceeds shall be applied, if such Net Cash Proceeds
are received by the Borrower or its Subsidiaries prior to the Conversion Date,
on such date toward the prepayment of the outstanding Revolving Credit Loans
without a corresponding reduction of the Revolving Credit Commitments in
accordance with Section 2.16.

          (d) If any Capital Stock or Indebtedness shall be issued or incurred
by the Borrower or any of its Subsidiaries (excluding any Indebtedness incurred
in accordance with Section 6.2), an amount equal to 100% of the Net Cash
Proceeds thereof shall be applied on the date of such issuance or incurrence
toward the prepayment of the Term Loans and the permanent reduction of the
Revolving Credit Commitments as set forth in Sections 2.10(e) and 2.16.

          (e) Amounts required by this Section to be applied to the prepayment
of the Term Loans and the permanent reduction of the Revolving Credit
Commitments shall be applied first, to the prepayment of the Term Loans and,
second, to reduce permanently the Revolving Credit Commitments. Any such
permanent reduction of the Revolving Credit Commitments shall be accompanied by
prepayment of the Revolving Credit Loans to the extent, if any, that the Total
Revolving Extensions of Credit exceed the amount of the Total Revolving Credit
Commitments as so reduced. Each (x) prepayment of the Loans under this Section
shall be at the redemption prices set forth below and (except in the case of
Revolving Credit Loans that are Base Rate Loans) shall be accompanied by accrued
interest to the date of such prepayment on the amount prepaid and (y) reduction
of Revolving Credit Commitments shall be at the redemption prices (expressed as
percentages of the principal amount of the Loans or Revolving Credit
Commitments, as the case may be) set forth below, if prepaid or reduced during
the twelve-month period beginning on May 9 of the years indicated below:

<PAGE>

                                                                              29

Year                                               Percentage
----                                               ----------
2003............................................      104%
2004............................................      103%
2005............................................      102%
2006............................................      101%
2007............................................      100%

; provided that, it is understood and agreed that the redemption prices above
shall apply to mandatory prepayments of Revolving Credit Loans to the extent
required in connection with a reduction of the Revolving Credit Commitments
pursuant to this paragraph (e).

          (f) (i) Notwithstanding anything to the contrary in Section 2.10(e) or
2.16, with respect to the amount of any mandatory prepayment described in
Section 2.10 that is allocated to the Term Loans of any Lender (such amounts,
the "Prepayment Amount"), the Borrower will, in lieu of applying such amount to
the prepayment of Term Loans as provided in paragraph (e) above, on the date
specified in Section 2.10 for such prepayment, give the Administrative Agent
telephonic notice (promptly confirmed in writing) requesting that the
Administrative Agent prepare and provide to each Term Loan Lender a notice
(each, a "Prepayment Option Notice") as described below.

          (ii) As promptly as practicable after receiving such notice from the
     Borrower, the Administrative Agent will send to each Term Loan Lender a
     Prepayment Option Notice, which shall be in the form of Exhibit J, and
     shall include an offer by the Borrower to prepay on the date (each a
     "Mandatory Prepayment Date") that is ten Business Days after the date of
     the Prepayment Option Notice, the relevant Term Loans of such Lender by an
     amount equal to the portion of the Prepayment Amount indicated in such
     Lender's Prepayment Option Notice as being applicable to such Lender's Term
     Loans.

          (iii) In the event that any of the Term Loan Lenders (each, a
     "Declining Term Loan Lender") is not willing to accept all or a portion of
     its Prepayment Amount on the Mandatory Prepayment Date, such Declining Term
     Loan Lender shall notify the Administrative Agent in writing of the portion
     of its Prepayment Amount that it is not willing to accept no later than
     three Business Days after the date of the Prepayment Option Notice,
     provided that, if a Term Loan Lender has not notified the Administrative
     Agent of its intent to decline all or a portion of its Prepayment Amount,
     such Lender shall be deemed to have accepted its entire Prepayment Amount.

          (iv) The Administrative Agent shall then promptly distribute to each
     Term Loan Lender a revised Prepayment Option Notice including a pro rata
     portion of the Prepayment Amount (the "Revised Prepayment Amount") declined
     by the Declining Term Loan Lenders. In the event that any Term Loan Lender
     does not wish to accept all or a portion of the Revised Prepayment Amount,
     such Declining Term Loan Lender shall notify the Administrative Agent in
     writing of the portion of its Revised Prepayment Amount that it is not
     willing to accept no later than three Business Days after the date of the
     revised Prepayment Option Notice, provided that, if a Term Loan Lender has
     not

<PAGE>

                                                                              30

     notified the Administrative Agent of its intent to decline all or a portion
     of its Revised Prepayment Amount, such Lender shall be deemed to have
     accepted its entire Revised Prepayment Amount.

          (v) In the event that any portion of the Prepayment Amount has been
     declined by the Term Loan Lenders pursuant to clause (iv) above prior to
     the Conversion Date, such amount shall be applied to the reduction of the
     Revolving Credit Commitments in accordance with Section 2.10(g).

          (vi) On the Mandatory Prepayment Date, (x) the Borrower shall pay to
     the relevant Term Loan Lenders the aggregate amount necessary to prepay
     that portion of the outstanding relevant Term Loans in respect of which
     such Lenders have accepted prepayment as described above and (y) the
     Borrower shall be entitled to retain the remaining portion of the
     Prepayment Amount not accepted by the relevant Lenders or applied pursuant
     to Section 2.10(g) below.

          (g) (i) Notwithstanding anything to the contrary in Section 2.10(e) or
2.16, with respect to the amount of any mandatory prepayment described in
Section 2.10 that is allocated to reduce the Revolving Credit Commitment of any
Lender (such amounts, the "Reduction Amount"), the Borrower will, in lieu of
applying such amount to the reduction of the Revolving Credit Commitments as
provided in paragraph (e) above, on the date specified in Section 2.10 for such
reduction, give the Administrative Agent telephonic notice (promptly confirmed
in writing) requesting that the Administrative Agent prepare and provide to each
Revolving Credit Lender a notice (each, a "Reduction Option Notice") as
described below.

          (ii) As promptly as practicable after receiving such notice from the
     Borrower, the Administrative Agent will send to each Revolving Credit
     Lender a Reduction Option Notice, which shall be in the form of Exhibit K,
     and shall include an offer by the Borrower to reduce on the Mandatory
     Prepayment Date that is ten Business Days after the date of the Reduction
     Option Notice, the relevant Revolving Credit Commitment of such Lender by
     an amount equal to the portion of the Reduction Amount indicated in such
     Lender's Reduction Option Notice as being applicable to such Lender's
     Revolving Credit Commitment.

          (iii) In the event that any of the Revolving Credit Lenders (each, a
     "Declining Revolving Credit Lender") is not willing to accept all or a
     portion of its Reduction Amount on the Mandatory Prepayment Date, such
     Declining Revolving Credit Lender shall notify the Administrative Agent in
     writing of the portion of its Reduction Amount that it is not willing to
     accept no later than three Business Days after the date of the Reduction
     Option Notice, provided that, if a Revolving Credit Lender has not notified
     the Administrative Agent of its intent to decline all or a portion of its
     Reduction Amount, such Lender shall be deemed to have accepted its entire
     Reduction Amount.

          (iv) The Administrative Agent shall then promptly distribute to each
     Revolving Credit Lender a revised Reduction Option Notice including a pro
     rata portion of the Reduction Amount (the "Revised Reduction Amount")
     declined by the Declining Revolving Credit Lenders. In the event that any
     Revolving Credit Lender does not wish

<PAGE>

                                                                              31

     to accept all or a portion of its Revised Reduction Amount, such Declining
     Revolving Credit Lender shall notify the Administrative Agent in writing of
     the portion of its Revised Reduction Amount that it is not willing to
     accept no later than three Business Days after the date of the revised
     Reduction Option Notice, provided that, if a Revolving Credit Lender has
     not notified the Administrative Agent of its intent to decline all or a
     portion of its Revised Reduction Amount, such Lender shall be deemed to
     have accepted its entire Revised Reduction Amount.

          (v) In the event that any Prepayment Amounts are declined by the Term
     Loan Lenders pursuant to Section 2.10(f)(iv), the Administrative Agent
     shall then promptly distribute a Reduction Option Notice with respect to
     such declined Prepayment Amounts to each Revolving Credit Lender which
     notice shall constitute an offer by the Borrower to reduce such Lender's
     Revolving Credit Commitment by the portion of the Prepayment Amount
     indicated in such Lender's Reduction Option Notice as being applicable to
     such Lender. In the event that any Revolving Credit Lender is not willing
     to accept a reduction of its Revolving Credit Commitment pursuant to this
     clause (v), it shall notify the Administrative Agent in writing of the
     portion of the Prepayment Amount it is not willing to accept no later than
     two Business Days after the date of the Reduction Option Notice delivered
     pursuant to this clause (v).

          (vi) On the Mandatory Prepayment Date, (x) the Revolving Credit
     Commitment of each Revolving Credit Lender shall be reduced by the amount
     of the Reduction Amount and Prepayment Amount accepted by such Revolving
     Credit Lender pursuant to this Section 2.10(g), (y) the Borrower shall pay
     to the relevant Revolving Credit Lenders the aggregate amount necessary to
     prepay that portion of the outstanding relevant Revolving Credit Loans in
     respect of which such Lenders have accepted prepayment as described above
     in accordance with Section 2.10(e) and (z) the Borrower shall be entitled
     to retain the remaining portion of the Reduction Amount and Prepayment
     Amount not accepted by the relevant Lenders.

          2.11. Conversion and Continuation Options. (a) The Borrower may elect
from time to time to convert Eurodollar Loans to Base Rate Loans by giving the
Administrative Agent at least two Business Days' prior irrevocable notice of
such election, provided that any such conversion of Eurodollar Loans may only be
made on the last day of an Interest Period with respect thereto. The Borrower
may elect from time to time to convert Base Rate Loans to Eurodollar Loans by
giving the Administrative Agent at least three Business Days' prior irrevocable
notice of such election (which notice shall specify the length of the initial
Interest Period therefor), provided that no Base Rate Loan under a particular
Facility may be converted into a Eurodollar Loan (i) when any Event of Default
has occurred and is continuing and the Administrative Agent or the Majority
Facility Lenders in respect of such Facility have determined in its or their
sole discretion not to permit such conversions or (ii) after the date that is
one month prior to the final scheduled termination or maturity date of such
Facility. Upon receipt of any such notice the Administrative Agent shall
promptly notify each relevant Lender thereof.

          (b) Any Eurodollar Loan may be continued as such upon the expiration
of the then current Interest Period with respect thereto by the Borrower giving
irrevocable notice to the

<PAGE>

                                                                              32

Administrative Agent, in accordance with the applicable provisions of the term
"Interest Period" set forth in Section 1.1, of the length of the next Interest
Period to be applicable to such Loans, provided that no Eurodollar Loan under a
particular Facility may be continued as such (i) when any Event of Default has
occurred and is continuing and the Administrative Agent has or the Majority
Facility Lenders in respect of such Facility have determined in its or their
sole discretion not to permit such continuations or (ii) after the date that is
one month prior to the final scheduled termination or maturity date of such
Facility; and provided, further, that if the Borrower shall fail to give any
required notice as described above in this paragraph or if such continuation is
not permitted pursuant to the preceding proviso such Loans shall be
automatically converted to Base Rate Loans on the last day of such then expiring
Interest Period. Upon receipt of any such notice the Administrative Agent shall
promptly notify each relevant Lender thereof.

          2.12. Minimum Amounts and Maximum Number of Eurodollar Tranches.
Notwithstanding anything to the contrary in this Agreement, all borrowings,
conversions, continuations and optional prepayments of Eurodollar Loans
hereunder and all selections of Interest Periods hereunder shall be in such
amounts and be made pursuant to such elections so that, (a) after giving effect
thereto, the aggregate principal amount of the Eurodollar Loans comprising each
Eurodollar Tranche shall be equal to $2,500,000 or a whole multiple of $500,000
in excess thereof and (b) no more than ten Eurodollar Tranches shall be
outstanding at any one time.

          2.13. Interest Rates and Payment Dates. (a) Each Eurodollar Loan shall
bear interest for each day during each Interest Period with respect thereto at a
rate per annum equal to the Eurodollar Rate determined for such day plus the
Applicable Margin plus the PIK Rate, provided that, subject to Section 2.13(e),
interest accruing and payable to each Lender based on the PIK Rate shall be
deemed to be a term loan (a "PIK Term Loan") made by such Lender to the Borrower
on each Interest Payment Date pursuant to Section 2.2(b) in an amount equal to
the PIK Rate multiplied by the outstanding Eurodollar Loans of such Lender.

          (b) Each Base Rate Loan shall bear interest at a rate per annum equal
to the Base Rate plus the Applicable Margin plus the PIK Rate, provided that,
subject to Section 2.13(e), interest accruing and payable to each Lender based
on the PIK Rate shall be deemed to be a PIK Term Loan made by such Lender to the
Borrower on each Interest Payment Date pursuant to Section 2.2(b) in an amount
equal to the PIK Rate multiplied by the outstanding Base Rate Loans of such
Lender.

          (c) (i) If all or a portion of the principal amount of any Loan shall
not be paid when due (whether at the stated maturity, by acceleration or
otherwise), all outstanding Loans (whether or not overdue) shall bear interest
at a rate per annum that is equal to in the case of the Loans, the rate that
would otherwise be applicable thereto pursuant to the foregoing provisions of
this Section plus 2% and (ii) if all or a portion of any interest payable on any
Loan or any commitment fee or other amount payable hereunder shall not be paid
when due (whether at the stated maturity, by acceleration or otherwise), such
overdue amount shall bear interest at a rate per annum equal to the rate then
applicable to Base Rate Loans under the relevant Facility plus 2% (or, in the
case of any such other amounts that do not relate to a particular Facility, the
rate then applicable to Base Rate Loans under the Revolving Credit Facility plus
2%), in each case,

<PAGE>

                                                                              33

with respect to clauses (i) and (ii) above, from the date of such non-payment
until such amount is paid in full (after as well as before judgment).

          (d) Interest shall be payable in arrears on each Interest Payment
Date, provided that interest accruing pursuant to paragraph (c) of this Section
shall be payable from time to time on demand.

          (e) Upon the occurrence and during the continuation of an Event of
Default, interest payable on each Loan based on the PIK Rate after such
occurrence and during such continuation shall be payable in cash on each
Interest Payment Date.

          2.14. Computation of Interest and Fees. (a) Interest, fees and
commissions payable pursuant hereto shall be calculated on the basis of a
360-day year for the actual days elapsed, except that, with respect to Base Rate
Loans the rate of interest on which is calculated on the basis of the Prime
Rate, the interest thereon shall be calculated on the basis of a 365- (or 366-,
as the case may be) day year for the actual days elapsed. The Administrative
Agent shall as soon as practicable notify the Borrower and the relevant Lenders
of each determination of a Eurodollar Rate. Any change in the interest rate on a
Loan resulting from a change in the Base Rate or the Eurocurrency Reserve
Requirements shall become effective as of the opening of business on the day on
which such change becomes effective. The Administrative Agent shall as soon as
practicable notify the Borrower and the relevant Lenders of the effective date
and the amount of each such change in interest rate.

          (b) Each determination of an interest rate by the Administrative Agent
pursuant to any provision of this Agreement shall be conclusive and binding on
the Borrower and the Lenders in the absence of manifest error. The
Administrative Agent shall, at the request of the Borrower, deliver to the
Borrower a statement showing the quotations used by the Administrative Agent in
determining any interest rate pursuant to Section 2.13(a).

          2.15. Inability to Determine Interest Rate. If prior to the first day
of any Interest Period:

          (a) the Administrative Agent shall have determined (which
     determination shall be conclusive and binding upon the Borrower) that, by
     reason of circumstances affecting the relevant market, adequate and
     reasonable means do not exist for ascertaining the Eurodollar Rate for such
     Interest Period, or

          (b) the Administrative Agent shall have received notice from the
     Majority Facility Lenders in respect of the relevant Facility that the
     Eurodollar Rate determined or to be determined for such Interest Period
     will not adequately and fairly reflect the cost to such Lenders (as
     conclusively certified by such Lenders) of making or maintaining their
     affected Loans during such Interest Period,

the Administrative Agent shall give telecopy or telephonic notice thereof to the
Borrower and the relevant Lenders as soon as practicable thereafter. If such
notice is given (x) any Eurodollar Loans under the relevant Facility requested
to be made on the first day of such Interest Period shall be made as Base Rate
Loans, (y) any Loans under the relevant Facility that were to have

<PAGE>

                                                                              34

been converted on the first day of such Interest Period to Eurodollar Loans
shall be continued as Base Rate Loans and (z) any outstanding Eurodollar Loans
under the relevant Facility shall be converted, on the last day of the then
current Interest Period with respect thereto, to Base Rate Loans. Until such
notice has been withdrawn by the Administrative Agent, no further Eurodollar
Loans under the relevant Facility shall be made or continued as such, nor shall
the Borrower have the right to convert Loans under the relevant Facility to
Eurodollar Loans.

          2.16. Pro Rata Treatment and Payments. (a) Each borrowing by the
Borrower from the Lenders hereunder, each payment by the Borrower on account of
any commitment fee and any reduction of the Commitments of the Lenders shall be
made pro rata according to the respective Term Loan Percentages or Revolving
Credit Percentages, as the case may be, of the relevant Lenders. Each payment
(other than prepayments) in respect of principal or interest in respect of the
Loans, each payment in respect of fees payable hereunder shall be applied to the
amounts of such obligations owing to the Lenders pro rata according to the
respective amounts then due and owing to the Lenders.

          (b) Each payment (including each prepayment) by the Borrower on
account of principal and interest on the Term Loans shall be allocated among the
Term Loan Lenders pro rata based on the outstanding principal amounts of the
Term Loans then held by the Term Loan Lenders (except as otherwise provided in
Section 2.10(e)), and shall be applied to the installments of the Term Loans pro
rata based on the remaining outstanding principal amounts of such installments.
Amounts prepaid on account of the Term Loans may not be reborrowed.

          (c) Each payment (including each prepayment) by the Borrower on
account of principal of and interest on the Revolving Credit Loans shall be
allocated among the Revolving Credit Lenders pro rata based on the outstanding
principal amounts of the Revolving Credit Loans then held by the Revolving
Credit Lenders.

          (d) The application of any payment of Loans under any Facility
(including mandatory prepayments but excluding optional prepayments) shall be
made, first, to Base Rate Loans under such Facility and, second, to Eurodollar
Loans under such Facility. The application of optional prepayments shall be as
directed by the Borrower. Each payment of the Loans (except in the case of
Revolving Credit Loans that are Base Rate Loans) shall be accompanied by accrued
interest to the date of such payment on the amount paid.

          (e) All payments (including prepayments) to be made by the Borrower
hereunder, whether on account of principal, interest, fees or otherwise, shall
be made without setoff or counterclaim and shall be made prior to 12:00 Noon,
New York City time, on the due date thereof to the Administrative Agent, for the
account of the Lenders, at the Payment Office, in Dollars and in immediately
available funds. The Administrative Agent shall distribute such payments to the
Lenders promptly upon receipt in like funds as received. If any payment
hereunder (other than payments on the Eurodollar Loans) becomes due and payable
on a day other than a Business Day, such payment shall be extended to the next
succeeding Business Day. If any payment on a Eurodollar Loan becomes due and
payable on a day other than a Business Day, the maturity thereof shall be
extended to the next succeeding Business Day unless the result of such extension
would be to extend such payment into another calendar month, in which event such
payment shall be made on the immediately preceding Business Day. In the case of
any

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                                                                              35

extension of any payment of principal pursuant to the preceding two sentences,
interest thereon shall be payable at the then applicable rate during such
extension.

          (f) Unless the Administrative Agent shall have been notified in
writing by any Lender prior to a borrowing that such Lender will not make the
amount that would constitute its share of such borrowing available to the
Administrative Agent, the Administrative Agent may assume that such Lender is
making such amount available to the Administrative Agent, and the Administrative
Agent may, in reliance upon such assumption, make available to the Borrower a
corresponding amount. If such amount is not made available to the Administrative
Agent by the required time on the Borrowing Date therefor, such Lender shall pay
to the Administrative Agent, on demand, such amount with interest thereon at a
rate equal to the daily average Federal Funds Effective Rate for the period
until such Lender makes such amount immediately available to the Administrative
Agent. A certificate of the Administrative Agent submitted to any Lender with
respect to any amounts owing under this paragraph shall be conclusive in the
absence of manifest error. If such Lender's share of such borrowing is not made
available to the Administrative Agent by such Lender within three Business Days
of such Borrowing Date, the Administrative Agent shall also be entitled to
recover such amount with interest thereon at the rate per annum applicable to
Base Rate Loans under the relevant Facility, on demand, from the Borrower.

          (g) Unless the Administrative Agent shall have been notified in
writing by the Borrower prior to the date of any payment being made hereunder
that the Borrower will not make such payment to the Administrative Agent, the
Administrative Agent may assume that the Borrower is making such payment, and
the Administrative Agent may, but shall not be required to, in reliance upon
such assumption, make available to the Lenders their respective pro rata shares
of a corresponding amount. If such payment is not made to the Administrative
Agent by the Borrower within three Business Days of such required date, the
Administrative Agent shall be entitled to recover, on demand, from each Lender
to which any amount which was made available pursuant to the preceding sentence,
such amount with interest thereon at the rate per annum equal to the daily
average Federal Funds Effective Rate. Nothing herein shall be deemed to limit
the rights of the Administrative Agent or any Lender against the Borrower.

          2.17. Requirements of Law. (a) If the adoption of or any change in any
Requirement of Law or in the interpretation or application thereof or compliance
by any Lender with any request or directive (whether or not having the force of
law) from any central bank or other Governmental Authority made subsequent to
the date hereof:

          (i) shall subject any Lender to any tax of any kind whatsoever with
     respect to this Agreement or any Eurodollar Loan made by it, or change the
     basis of taxation of payments to such Lender in respect thereof (except for
     Non-Excluded Taxes covered by Section 2.18 and changes in the rate of tax
     on the overall net income of such Lender);

          (ii) shall impose, modify or hold applicable any reserve, special
     deposit, compulsory loan or similar requirement against assets held by,
     deposits or other liabilities in or for the account of, advances, loans or
     other extensions of credit by, or any other acquisition of funds by, any
     office of such Lender that is not otherwise included in the determination
     of the Eurodollar Rate hereunder; or

<PAGE>

                                                                              36

          (iii) shall impose on such Lender any other condition;

and the result of any of the foregoing is to increase the cost to such Lender,
by an amount which such Lender deems to be material, of making, converting into,
continuing or maintaining Eurodollar Loans, or to reduce any amount receivable
hereunder in respect thereof, then, in any such case, the Borrower shall
promptly pay such Lender, upon its demand, any additional amounts necessary to
compensate such Lender for such increased cost or reduced amount receivable. If
any Lender becomes entitled to claim any additional amounts pursuant to this
Section, it shall promptly notify the Borrower (with a copy to the
Administrative Agent) of the event by reason of which it has become so entitled
provided that the Borrower shall not be required to compensate a Lender pursuant
to this paragraph for any amounts incurred more than six months prior to the
date on which such Lender notifies the Borrower of such Lender's intention to
claim compensation therefor; and provided further that, if the circumstances
giving rise to such claim have a retroactive effect, then such six-month period
shall be extended to include the period of such retroactive effect.

          (b) If any Lender shall have determined that the adoption of or any
change in any Requirement of Law regarding capital adequacy or in the
interpretation or application thereof or compliance by such Lender or any
corporation controlling such Lender with any request or directive regarding
capital adequacy (whether or not having the force of law) from any Governmental
Authority made subsequent to the date hereof shall have the effect of reducing
the rate of return on such Lender's or such corporation's capital as a
consequence of its obligations hereunder to a level below that which such Lender
or such corporation could have achieved but for such adoption, change or
compliance (taking into consideration such Lender's or such corporation's
policies with respect to capital adequacy) by an amount deemed by such Lender to
be material, then from time to time, after submission by such Lender to the
Borrower (with a copy to the Administrative Agent) of a written request
therefor, the Borrower shall pay to such Lender such additional amount or
amounts as will compensate such Lender for such reduction; provided that the
Borrower shall not be required to compensate a Lender pursuant to this paragraph
for any amounts incurred more than six months prior to the date on which such
Lender notifies the Borrower of such Lender's intention to claim compensation
therefor; and provided further that, if the circumstances giving rise to such
claim have a retroactive effect, then such six-month period shall be extended to
include the period of such retroactive effect. If any Lender becomes entitled to
claim any additional amounts pursuant to this Section, it shall promptly notify
the Borrower (with a copy to the Administrative Agent) of the event by reason of
which it has become so entitled.

          (c) A certificate as to any additional amounts payable pursuant to
this Section submitted by any Lender to the Borrower (with a copy to the
Administrative Agent) shall be conclusive in the absence of manifest error. The
obligations of the Borrower pursuant to this Section shall survive the
termination of this Agreement and the payment of the Revolving Credit Loans and
all other amounts payable hereunder.

          2.18. Taxes. (a) All payments made by the Borrower under this
Agreement shall be made free and clear of, and without deduction or withholding
for or on account of, any present or future income, stamp or other taxes,
levies, imposts, duties, charges, fees, deductions or withholdings, now or
hereafter imposed, levied, collected, withheld or assessed by any

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                                                                              37

Governmental Authority, excluding net income taxes and franchise taxes (imposed
in lieu of net income taxes) imposed on the Administrative Agent or any Lender
as a result of a present or former connection between the Administrative Agent
or such Lender and the jurisdiction of the Governmental Authority imposing such
tax or any political subdivision or taxing authority thereof or therein (other
than any such connection arising solely from the Administrative Agent's or such
Lender's having executed, delivered or performed its obligations or received a
payment under, or enforced, this Agreement or any other Loan Document). If any
such non-excluded taxes, levies, imposts, duties, charges, fees, deductions or
withholdings ("Non-Excluded Taxes") or Other Taxes are required to be withheld
from any amounts payable to the Administrative Agent or any Lender hereunder,
the amounts so payable to the Administrative Agent or such Lender shall be
increased to the extent necessary to yield to the Administrative Agent or such
Lender (after payment of all Non-Excluded Taxes and Other Taxes) interest or any
such other amounts payable hereunder at the rates or in the amounts specified in
this Agreement, provided, however, that the Borrower shall not be required to
increase any such amounts payable to any Lender with respect to any Non-Excluded
Taxes (i) that are attributable to such Lender's failure to comply with the
requirements of paragraph (d) or (e) or of this Section or (ii) that are United
States withholding taxes imposed on amounts payable to such Lender at the time
the Lender becomes a party to this Agreement, except to the extent that such
Lender's assignor (if any) was entitled, at the time of assignment, to receive
additional amounts from the Borrower with respect to such Non-Excluded Taxes
pursuant to Section 2.18(a).

          (b) In addition, the Borrower shall pay any Other Taxes to the
relevant Governmental Authority in accordance with applicable law.

          (c) Whenever any Non-Excluded Taxes or Other Taxes are payable by the
Borrower, as promptly as possible thereafter the Borrower shall send to the
Administrative Agent for the account of the relevant Agent or Lender, as the
case may be, a certified copy of an original official receipt received by the
Borrower showing payment thereof. If the Borrower fails to pay any Non-Excluded
Taxes or Other Taxes when due to the appropriate taxing authority or fails to
remit to the Administrative Agent the required receipts or other required
documentary evidence, the Borrower shall indemnify the Administrative Agent and
the Lenders for any incremental taxes, interest or penalties that may become
payable by the Administrative Agent or any Lender as a result of any such
failure. The agreements in this Section 2.18 shall survive the termination of
this Agreement and the payment of the Loans and all other amounts payable
hereunder.

          (d) Each Lender (or Transferee) that is not a U.S. Person as defined
in Section 7701(a)(30) of the Code (a "Non-U.S. Lender") shall deliver to the
Borrower and the Administrative Agent (or, in the case of a Participant, to the
Lender from which the related participation shall have been purchased) two
copies of either U.S. Internal Revenue Service Form W-8BEN or Form W-8EC1, or,
in the case of a Non-U.S. Lender claiming exemption from U.S. federal
withholding tax under Section 871(h) or 881(c) of the Code with respect to
payments of "portfolio interest" a statement substantially in the form of
Exhibit G and a Form W-8BEN, or any subsequent versions thereof or successors
thereto properly completed and duly executed by such Non-U.S. Lender claiming
complete exemption from, or a reduced rate of, U.S. federal withholding tax on
all payments by the Borrower under this Agreement and the other Loan Documents.
Such forms shall be delivered by each Non-U.S. Lender on or before the date

<PAGE>

                                                                              38

it becomes a party to this Agreement (or, in the case of any Participant, on or
before the date such Participant purchases the related participation). In
addition, each Non-U.S. Lender shall deliver such forms promptly upon the
obsolescence or invalidity of any form previously delivered by such Non-U.S.
Lender. Each Non-U.S. Lender shall promptly notify the Borrower at any time it
determines that it is no longer in a position to provide any previously
delivered certificate to the Borrower (or any other form of certification
adopted by the U.S. taxing authorities for such purpose). Notwithstanding any
other provision of this paragraph, a Non-U.S. Lender shall not be required to
deliver any form pursuant to this paragraph that such Non-U.S. Lender is not
legally able to deliver.

          (e) A Lender that is entitled to an exemption from or reduction of
non-U.S. withholding tax under the law of the jurisdiction in which the Borrower
is located, or any treaty to which such jurisdiction is a party, with respect to
payments under this Agreement shall deliver to the Borrower (with a copy to the
Administrative Agent), at the time or times prescribed by applicable law or
reasonably requested by the Borrower, such properly completed and executed
documentation prescribed by applicable law as will permit such payments to be
made without withholding or at a reduced rate, provided that such Lender is
legally entitled to complete, execute and deliver such documentation and in such
Lender's reasonable judgment such completion, execution or submission would not
materially prejudice the legal position of such Lender.

          2.19. Indemnity. The Borrower agrees to indemnify each Lender and to
hold each Lender harmless from any loss or expense that such Lender may sustain
or incur as a consequence of (a) default by the Borrower in making a borrowing
of, conversion into or continuation of Eurodollar Loans after the Borrower has
given a notice requesting the same in accordance with the provisions of this
Agreement, (b) default by the Borrower in making any prepayment after the
Borrower has given a notice thereof in accordance with the provisions of this
Agreement or (c) the making of a prepayment or conversion of Eurodollar Loans on
a day that is not the last day of an Interest Period with respect thereto. Such
indemnification may include an amount equal to the excess, if any, of (i) the
amount of interest that would have accrued on the amount so prepaid, or not so
borrowed, converted or continued, for the period from the date of such
prepayment or of such failure to borrow, convert or continue to the last day of
such Interest Period (or, in the case of a failure to borrow, convert or
continue, the Interest Period that would have commenced on the date of such
failure) in each case at the applicable rate of interest for such Loans provided
for herein (excluding, however, the Applicable Margin included therein, if any)
over (ii) the amount of interest (as reasonably determined by such Lender) that
would have accrued to such Lender on such amount by placing such amount on
deposit for a comparable period with leading banks in the interbank eurodollar
market. A certificate as to any amounts payable pursuant to this Section
submitted to the Borrower by any Lender shall be conclusive in the absence of
manifest error. This covenant shall survive the termination of this Agreement
and the payment of the Loans and all other amounts payable hereunder.

          2.20. Illegality. Notwithstanding any other provision herein, if the
adoption of or any change in any Requirement of Law or in the interpretation or
application thereof shall make it unlawful for any Lender to make or maintain
Eurodollar Loans as contemplated by this Agreement, (a) the commitment of such
Lender hereunder to make Eurodollar Loans, continue

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                                                                              39

Eurodollar Loans as such and convert Base Rate Loans to Eurodollar Loans shall
forthwith be canceled and (b) such Lender's Loans then outstanding as Eurodollar
Loans, if any, shall be converted automatically to Base Rate Loans on the
respective last days of the then current Interest Periods with respect to such
Loans or within such earlier period as required by law. If any such conversion
of a Eurodollar Loan occurs on a day which is not the last day of the then
current Interest Period with respect thereto, the Borrower shall pay to such
Lender such amounts, if any, as may be required pursuant to Section 2.19.

          2.21. Change of Lending Office. Each Lender agrees that, upon the
occurrence of any event giving rise to the operation of Section 2.17, 2.18(a) or
2.20 with respect to such Lender, it will, if requested by the Borrower, use
reasonable efforts (subject to overall policy considerations of such Lender) to
designate another lending office for any Loans affected by such event with the
object of avoiding the consequences of such event; provided, that such
designation is made on terms that, in the sole judgment of such Lender, cause
such Lender and its lending office(s) to suffer no economic, legal or regulatory
disadvantage, and provided, further, that nothing in this Section shall affect
or postpone any of the obligations of any Borrower or the rights of any Lender
pursuant to Section 2.17, 2.18(a) or 2.20.

          2.22. Conversion of Revolving Credit Loans. On the Conversion Date, an
amount equal to the Revolving Credit Loans outstanding on such date shall be
automatically converted into Term Loans (the "New Term Loans") and the Revolving
Credit Commitments shall automatically terminate. Upon the conversion of the
Revolving Credit Loans into New Term Loans hereunder, such New Term Loans shall
constitute Term Loans for all purposes of this Agreement and each Revolving
Credit Lender shall automatically become a Term Loan Lender hereunder.

          (b) The Borrower may request that the Conversion Date be extended by
delivering to the Administrative Agent a written notice (which notice must be
received by the Administrative Agent at least five Business Days prior to the
Original Conversion Date) specifying the date to which the Conversion Date shall
be extended, which date shall be no later than the earlier of (x) June 30, 2004
and (y) the date that is six months after the Original Conversion Date.

                    SECTION 3. REPRESENTATIONS AND WARRANTIES

          To induce the Administrative Agent and the Lenders to enter into this
Agreement and to make Loans, the Borrower hereby represents and warrants to the
Administrative Agent and each Lender that:

          3.1. Financial Condition. (a) The unaudited pro forma consolidated
balance sheet of Holdings, the Borrower and its consolidated Subsidiaries as at
March 31, 2003 (including the notes thereto) (the "Pro Forma Balance Sheet"),
copies of which have heretofore been furnished to each Lender, has been prepared
giving effect (as if such events had occurred on such date) to (i) the Loans to
be made on the Closing Date and the use of the proceeds thereof described in
Section 3.16 and (ii) the payment of fees and expenses in connection with the
foregoing. The Pro Forma Balance Sheet has been prepared based on the best
information available to the Borrower as of the date of delivery thereof, and
presents fairly in all material

<PAGE>

                                                                              40

respects on a pro forma basis the estimated financial position of Holdings, the
Borrower and its consolidated Subsidiaries as at March 31, 2003, assuming that
the events specified in the preceding sentence had actually occurred at such
date.

          (b) The audited consolidated balance sheets of Holdings and its
Subsidiaries as at (x) December 31, 2002 and the related statements of income
and of cash flows for the fiscal year ended December 31, 2002, reported on by
Ernst & Young LLP and (y) December 31, 2001 and the related statements of income
and of cash flows for the two fiscal years ended December 31, 2001, reported on
by and accompanied by an unqualified report from Arthur Andersen LLP, in each
case, present fairly in all material respects the consolidated financial
condition of Holdings and its Subsidiaries as at such dates, and the
consolidated results of its operations and its consolidated cash flows for the
respective fiscal years then ended, provided that, it is understood and agreed
that (i) the financial statements for the fiscal year ending December 31, 2002
are accompanied by a report with a "going concern" qualification from Ernst &
Young LLP and (ii) Ernst & Young LLP will re-audit the financial statements for
the fiscal year ending December 31, 2001 referred to in clause (x) above in
connection with "discontinuation of operations" accounting treatment related to
the AAT Asset Sale. The unaudited consolidated balance sheet of Holdings and its
Subsidiaries and of the Borrower and its Subsidiaries as at March 31, 2003, and
the related unaudited consolidated statements of income and cash flows for the
three-month period ended on such date, present fairly in all material respects
the consolidated financial condition of Holdings and its Subsidiaries and of the
Borrower and its Subsidiaries, as the case may be, as at such date, and the
consolidated results of its operations and its consolidated cash flows for the
three-month period then ended (subject to normal year-end audit adjustments).
All such financial statements, including the related schedules and notes
thereto, have been prepared in accordance with GAAP applied consistently
throughout the periods involved (except as approved by the aforementioned firm
of accountants and disclosed therein). The Borrower and its Subsidiaries do not
have any material Guarantee Obligations, contingent liabilities and liabilities
for taxes, or any long-term leases or unusual forward or long-term commitments,
including, without limitation, any interest rate or foreign currency swap or
exchange transaction or other obligation in respect of derivatives, that are not
reflected in the most recent financial statements referred to in this paragraph.
During the period from March 31, 2003 to and including the date hereof there has
been no Disposition by the Borrower of any material part of its business or
Property.

          3.2. No Change. Since December 31, 2002 there has been no development
or event that has had or could reasonably be expected to have a Material Adverse
Effect.

          3.3. Corporate Existence; Compliance with Law. Each of the Borrower
and its Subsidiaries (a) is duly organized, validly existing and in good
standing under the laws of the jurisdiction of its organization, (b) has the
corporate power and authority, and the legal right, to own and operate its
Property, to lease the Property it operates as lessee and to conduct the
business in which it is currently engaged, (c) is duly qualified as a foreign
corporation and in good standing under the laws of each jurisdiction where its
ownership, lease or operation of Property or the conduct of its business
requires such qualification except to the extent the failure to be so qualified
could not, in the aggregate, reasonably be expected to have a Material Adverse
Effect and (d) is in compliance with all Requirements of Law except to the
extent that the failure

<PAGE>

                                                                              41

to comply therewith could not, in the aggregate, reasonably be expected to have
a Material Adverse Effect.

          3.4. Corporate Power; Authorization; Enforceable Obligations. Each
Loan Party has the corporate power and authority, and the legal right, to make,
deliver and perform the Loan Documents to which it is a party and, in the case
of the Borrower, to borrow hereunder. Each Loan Party has taken all necessary
corporate action to authorize the execution, delivery and performance of the
Loan Documents to which it is a party and, in the case of the Borrower, to
authorize the borrowings on the terms and conditions of this Agreement. No
consent or authorization of, filing with, notice to or other act by or in
respect of, any Governmental Authority or any other Person is required in
connection with the borrowings hereunder or with the execution, delivery,
performance, validity or enforceability of this Agreement or any of the Loan
Documents, except (i) consents, authorizations, filings and notices described in
Schedule 3.4, which consents, authorizations, filings and notices have been
obtained or made and are in full force and effect and (ii) the filings referred
to in Section 3.19. Each Loan Document has been duly executed and delivered on
behalf of each Loan Party party thereto. This Agreement constitutes, and each
other Loan Document upon execution will constitute, a legal, valid and binding
obligation of each Loan Party party thereto, enforceable against each such Loan
Party in accordance with its terms, except as enforceability may be limited by
applicable bankruptcy, insolvency, reorganization, moratorium or similar laws
affecting the enforcement of creditors' rights generally and by general
equitable principles (whether enforcement is sought by proceedings in equity or
at law).

          3.5. No Legal Bar. The execution, delivery and performance of this
Agreement and the other Loan Documents, the borrowings hereunder and the use of
the proceeds thereof (a) will not violate any Requirement of Law or any
Contractual Obligation of the Borrower or any of its Subsidiaries except (x) as
could not, in the aggregate, reasonably be expected to have a Material Adverse
Effect and (y) for such Contractual Obligations pursuant to which the
Administrative Agent is required to execute and deliver a non-disturbance
agreement and (b) will not result in, or require, the creation or imposition of
any Lien on any of their respective properties or revenues pursuant to any
Requirement of Law or any such Contractual Obligation (other than the Liens
created by the Security Documents). No Requirement of Law or Contractual
Obligation applicable to the Borrower or any of its Subsidiaries could
reasonably be expected to have a Material Adverse Effect.

          3.6. No Material Litigation. No litigation, investigation or
proceeding of or before any arbitrator or Governmental Authority is pending or,
to the knowledge of the Borrower, threatened by or against the Borrower or any
of its Subsidiaries or against any of their respective properties or revenues
(a) with respect to any of the Loan Documents or any of the transactions
contemplated hereby or thereby, or (b) that could reasonably be expected to have
a Material Adverse Effect.

          3.7. No Default. Neither the Borrower nor any of its Subsidiaries is
in default under or with respect to any of its Contractual Obligations in any
respect that could reasonably be expected to have a Material Adverse Effect. No
Default or Event of Default has occurred and is continuing.

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                                                                              42

          3.8. Ownership of Property; Liens. Each of the Borrower and its
Subsidiaries has title in fee simple to, a valid leasehold interest in, or an
easement, license or permit to occupy, all its real property, and good title to,
a valid leasehold interest in, or an easement, license or permit to occupy, all
its other Property, and none of such Property is subject to any Lien except as
permitted by Section 6.3.

          3.9. Intellectual Property. The Borrower and each of its Subsidiaries
owns, or is licensed to use, all Intellectual Property necessary for the conduct
of its business as currently conducted. No material claim has been asserted and
is pending by any Person challenging or questioning the use of any Intellectual
Property or the validity or effectiveness of any Intellectual Property, nor does
the Borrower know of any valid basis for any such claim. The use of Intellectual
Property by the Borrower and its Subsidiaries does not infringe on the rights of
any Person in any material respect.

          3.10. Taxes. Each of the Borrower and each of its Subsidiaries has
filed or caused to be filed all Federal, state and other material tax returns
that are required to be filed and has paid all taxes shown to be due and payable
on said returns or on any assessments made against it or any of its Property and
all other taxes, fees or other charges imposed on it or any of its Property by
any Governmental Authority (other than any the amount or validity of which are
currently being contested in good faith by appropriate proceedings and with
respect to which reserves in conformity with GAAP have been provided on the
books of the Borrower or its Subsidiaries, as the case may be) except for state
and local tax returns relating to taxes in an aggregate amount not exceeding
$500,000 at any one time; no tax Lien has been filed, and, to the knowledge of
the Borrower, no claim is being asserted, with respect to any such tax, fee or
other charge.

          3.11. Federal Regulations. No part of the proceeds of any Loans will
be used for "purchasing" or "carrying" any "margin stock" within the respective
meanings of each of the quoted terms under Regulation U as now and from time to
time hereafter in effect or for any purpose that violates the provisions of the
Regulations of the Board. If requested by any Lender or the Administrative
Agent, the Borrower will furnish to the Administrative Agent and each Lender a
statement to the foregoing effect in conformity with the requirements of FR Form
G-3 or FR Form U-1 referred to in Regulation U.

          3.12. Labor Matters. There are no strikes or other labor disputes
against the Borrower or any of its Subsidiaries pending or, to the knowledge of
the Borrower, threatened that (individually or in the aggregate) could
reasonably be expected to have a Material Adverse Effect. Hours worked by and
payment made to employees of the Borrower and its Subsidiaries have not been in
violation of the Fair Labor Standards Act or any other applicable Requirement of
Law dealing with such matters that (individually or in the aggregate) could
reasonably be expected to have a Material Adverse Effect. All payments due from
the Borrower or any of its Subsidiaries on account of employee health and
welfare insurance that (individually or in the aggregate) could reasonably be
expected to have a Material Adverse Effect if not paid have been paid or accrued
as a liability on the books of the Borrower or the relevant Subsidiary.

          3.13. ERISA. Neither a Reportable Event nor an "accumulated funding
deficiency" (within the meaning of Section 412 of the Code or Section 302 of
ERISA) has

<PAGE>

                                                                              43

occurred during the five-year period prior to the date on which this
representation is made or deemed made with respect to any Plan, and each Plan
has complied in all material respects with the applicable provisions of ERISA
and the Code. No termination of a Single Employer Plan has occurred, and no Lien
in favor of the PBGC or a Plan has arisen, during such five-year period. The
present value of all accrued benefits under each Single Employer Plan (based on
those assumptions used to fund such Plans) did not, as of the last annual
valuation date prior to the date on which this representation is made or deemed
made, exceed the value of the assets of such Plan allocable to such accrued
benefits by a material amount. Neither the Borrower nor any Commonly Controlled
Entity has had a complete or partial withdrawal from any Multiemployer Plan that
has resulted or could reasonably be expected to result in a material liability
under ERISA, and neither the Borrower nor any Commonly Controlled Entity would
become subject to any material liability under ERISA if the Borrower or any such
Commonly Controlled Entity were to withdraw completely from all Multiemployer
Plans as of the valuation date most closely preceding the date on which this
representation is made or deemed made. No such Multiemployer Plan is in
Reorganization or Insolvent.

          3.14. Investment Company Act; Other Regulations. No Loan Party is an
"investment company," or a company "controlled" by an "investment company",
within the meaning of the Investment Company Act of 1940, as amended. No Loan
Party is subject to regulation under any Requirement of Law (other than
Regulation X of the Board) which limits its ability to incur Indebtedness.

          3.15. Subsidiaries. (a) The Subsidiaries listed on Schedule 3.15
constitute all the Subsidiaries of the Borrower as of the Closing Date. Schedule
3.15 sets forth as of the Closing Date the name and jurisdiction of
incorporation of each Subsidiary and, as to each such Subsidiary, the percentage
of each class of Capital Stock owned by any Loan Party.

          (b) There are no outstanding subscriptions, options, warrants, calls,
rights or other agreements or commitments (other than stock options granted to
employees or directors and directors' qualifying shares) of any nature relating
to any Capital Stock of the Borrower or any Subsidiary.

          3.16. Use of Proceeds. The proceeds of the Loans made on the Closing
Date shall be used to refinance the Existing Credit Agreement. The proceeds of
the Loans made after the Closing Date shall be used to finance (i) the
acquisition of Qualified Tower Portfolios and construction of Towers permitted
by Section 6.7(b), (ii) to make Restricted Payments to Holdings permitted by
Section 6.6 and (iii) other working capital needs and general corporate purposes
of the Borrower and its Subsidiaries.

          3.17. Environmental Matters. Other than exceptions to any of the
following that could not, individually or in the aggregate, reasonably be
expected to result in a Material Environmental Loss:

          (a) the Borrower and its Subsidiaries: (i) are, and within the period
     of all applicable statutes of limitation have been, in compliance with all
     applicable Environmental Laws; (ii) hold all Environmental Permits (each of
     which is in full force and effect) required for any of their current or
     intended operations or for any property

<PAGE>

                                                                              44

     owned, leased, or otherwise operated by any of them; (iii) are, and within
     the period of all applicable statutes of limitation have been, in
     compliance with all of their Environmental Permits; and (iv) reasonably
     believe that: each of their Environmental Permits will be timely renewed
     and complied with, without material expense; any additional Environmental
     Permits that may be required of any of them will be timely obtained and
     complied with, without material expense; and compliance with any
     Environmental Law that is or is expected to become applicable to any of
     them will be timely attained and maintained, without material expense.

          (b) Materials of Environmental Concern are not present at, on, under,
     in, or about any real property now or formerly owned, leased or operated by
     the Borrower or any of its Subsidiaries, or at any other location
     (including, without limitation, any location to which Materials of
     Environmental Concern have been sent for re-use or recycling or for
     treatment, storage, or disposal) which could reasonably be expected to (i)
     give rise to liability of the Borrower or any of its Subsidiaries under any
     applicable Environmental Law or otherwise result in costs to the Borrower
     or any of its Subsidiaries, or (ii) interfere with the Borrower's or any of
     its Subsidiaries' continued operations, or (iii) impair the fair saleable
     value of any real property owned or leased by the Borrower or any of its
     Subsidiaries.

          (c) There is no judicial, administrative, or arbitral proceeding
     (including any notice of violation or alleged violation) under or relating
     to any Environmental Law to which the Borrower or any of its Subsidiaries
     is, or to the knowledge of the Borrower or any of its Subsidiaries will be,
     named as a party that is pending or, to the knowledge of the Borrower or
     any of its Subsidiaries, threatened; and to the knowledge of the Borrower
     or any of its Subsidiaries, there are no judicial, administrative, or
     arbitral proceedings under or relating to any Environmental Law pending or
     threatened against any Person, other than the Borrower or any of its
     Subsidiaries, that could reasonably be expected to affect the Borrower or
     any of its Subsidiaries.

          (d) Neither the Borrower nor any of its Subsidiaries has received any
     written request for information, or been notified that it is a potentially
     responsible party under or relating to the federal Comprehensive
     Environmental Response, Compensation, and Liability Act of 1980, as
     amended, or any similar Environmental Law, or with respect to any Materials
     of Environmental Concern.

          (e) Neither the Borrower nor any of its Subsidiaries has entered into
     or agreed to any consent decree, order, or settlement or other agreement,
     or is subject to any judgment, decree, or order or other agreement, in any
     judicial, administrative, arbitral, or other forum for dispute resolution,
     relating to compliance with or liability under any Environmental Law.

          (f) Neither the Borrower nor any of its Subsidiaries has assumed or
     retained, by contract or operation of law, any liabilities of any kind,
     fixed or contingent, known or unknown, under any Environmental Law or with
     respect to any Material of Environmental Concern.

<PAGE>

                                                                              45

          3.18. Accuracy of Information, etc. No statement or information
contained in this Agreement, any other Loan Document or any other written
document, certificate or statement furnished to the Administrative Agent or the
Lenders or any of them, by or on behalf of any Loan Party for use in connection
with the transactions contemplated by this Agreement or the other Loan
Documents, contained as of the date such statement, information, document or
certificate was so furnished, any untrue statement of a material fact or omitted
to state a material fact necessary in order to make the statements contained
herein or therein not misleading. The projections and pro forma financial
information contained in the materials referenced above are based upon good
faith estimates and assumptions believed by management of the Borrower to be
reasonable at the time made, it being recognized by the Lenders that such
financial information as it relates to future events is not to be viewed as fact
and that actual results during the period or periods covered by such financial
information may differ from the projected results set forth therein by a
material amount. There is no fact actually known to any Loan Party that could
reasonably be expected to have a Material Adverse Effect that has not been
expressly disclosed herein, in the other Loan Documents or in any other
documents, certificates and statements furnished to the Administrative Agent and
the Lenders for use in connection with the transactions contemplated hereby and
by the other Loan Documents.

          3.19. Security Documents. (a) The Guarantee and Collateral Agreement
is effective to create in favor of the Administrative Agent, for the benefit of
the Lenders, a legal, valid and enforceable security interest in the Collateral
described therein and proceeds thereof. In the case of the Pledged Stock
described in the Guarantee and Collateral Agreement, stock certificates
representing such Pledged Stock having been delivered to the Administrative
Agent, and in the case of the other Collateral described in the Guarantee and
Collateral Agreement, financing statements in appropriate form having been filed
in the offices specified on Schedule 3.19(a) and such other filings as are
specified on Schedule 3 to the Guarantee and Collateral Agreement having been
duly completed, the Guarantee and Collateral Agreement constitutes a fully
perfected Lien on, and security interest in, all right, title and interest of
the Loan Parties in such Collateral and the proceeds thereof, as security for
the Obligations (as defined in the Guarantee and Collateral Agreement), in each
case prior and superior in right to any other Person (except, in the case of
Collateral other than Pledged Stock, Liens permitted by Section 6.3).
Notwithstanding the foregoing, it is understood that fixture filings are not
being made in respect of Tower locations which are not Mortgaged Properties.

          (b) Each of the Mortgages executed and delivered after the Closing
Date will be when so executed and delivered, effective to create in favor of the
Administrative Agent, for the benefit of the Lenders, a legal, valid and
enforceable Lien on the Mortgaged Properties described therein and proceeds
thereof, and when such Mortgages are recorded in the appropriate recording
office, each such Mortgage shall constitute a fully perfected Lien on, and
security interest in, all right, title and interest of the Loan Parties in the
Mortgaged Properties and the proceeds thereof, as security for the Obligations
(as defined in the relevant Mortgage), in each case prior and superior in right
to any other Person.

          3.20. Solvency. Each Loan Party is, and after giving effect to the
incurrence of all Indebtedness and obligations being incurred in connection
herewith will be and will continue to be, Solvent.

<PAGE>

                                                                              46

          3.21. Real Property Leases. The present and contemplated use of the
real property owned or leased by the Borrower or any of its Subsidiaries for the
operation of Towers is in compliance in all material respects with all
applicable zoning ordinances and regulations and other laws and regulations
where failure so to comply would result, or create reasonable risk of resulting,
in a Material Adverse Effect. Each lease pursuant to which the Borrower or any
of its Subsidiaries, as lessee, acquired rights in real property upon which any
Tower is situated is in full force and effect, the Borrower or such Subsidiary
has all rights of the lessee thereunder, there has been no default in the
performance of any of its terms or conditions by the Borrower or any such
Subsidiary nor (to the best of the Borrower's knowledge) any other party
thereto, and no claims of default have been asserted with respect thereto where
such default would result, or create a reasonable risk of resulting, in a
Material Adverse Effect.

          3.22. FCC and FAA Matters; State Regulatory Compliance. (a) The
Borrower (i) has duly and timely filed all material reports, registrations and
other material filings, if any, which are required to be filed by it or any of
its Subsidiaries under the Communications Act or any other applicable law, rule
or regulation of any Governmental Authority, including the FCC and the FAA, the
non-filing of which would not result, or be reasonably likely to result, in a
Material Adverse Effect and (ii) is in compliance with all such laws, rules,
regulations and ordinances, including those promulgated by the FCC and the FAA,
to the extent the non-compliance with which would result, or be reasonably
likely to result, in a Material Adverse Effect. All information provided by or
on behalf of the Borrower or any Affiliate in any material filing, if any, with
the FCC and the FAA relating to the business of the Borrower and its
Subsidiaries was, to the knowledge of such Person at the time of filing,
complete and correct in all material respects when made, and the FCC and the FAA
have been notified of any substantial or significant changes in such information
as may be required in accordance with applicable Requirements of Law.

          (b) The Borrower and its Subsidiaries have all permits, certificates,
licenses, tariff approvals and other authorizations from all state and federal
Governmental Authorities required to conduct their current business except for
such permits, certificates, licenses, tariff approvals and other authorizations
as could not, in the aggregate, reasonably be expected to have a Material
Adverse Effect.

          (c) The Borrower has no knowledge of any investigation, notice of
apparent liability, violation, forfeiture or other order or complaint issued by
or before any state or federal Governmental Authority, or of any other
proceedings of or before any state or federal Governmental Authority, which
could reasonably be expected to have a Material Adverse Effect.

          3.23. "Build to Suit" Obligations. On the Closing Date, the Borrower
and its Subsidiaries do not have any "build to suit" obligations except for 15
Towers to be built pursuant to contracts in existence on the date hereof.

                         SECTION 4. CONDITIONS PRECEDENT

          4.1. Conditions to Initial Extension of Credit. The occurrence of the
Closing Date, and the agreement of each Lender to make the initial extension of
credit requested to be

<PAGE>

                                                                              47

made by it on the Closing Date, are subject to the satisfaction, prior to or
concurrently with the making of such extension of credit on the Closing Date, of
the following conditions precedent:

          (a) Loan Documents. The Administrative Agent shall have received (i)
     this Agreement, executed and delivered by a duly authorized officer of the
     Borrower, (ii) the Guarantee and Collateral Agreement, executed and
     delivered by a duly authorized officer of Holdings, the Borrower and each
     Subsidiary Guarantor, (iii) a Mortgage covering Mortgaged Properties
     described in Schedule 1.1B necessary to satisfy the Mortgage Requirement on
     the Closing Date, executed and delivered by a duly authorized officer of
     each party thereto, and (iv) for the account of each relevant Lender that
     has requested a Note, Notes conforming to the requirements hereof and
     executed and delivered by a duly authorized officer of the Borrower.

          (b) Pro Forma Balance Sheet; Financial Statements. The Lenders shall
     have received (i) the Pro Forma Balance Sheet and (ii) the consolidated
     financial statements of Holdings and the Borrower described in Section 3.1.

          (c) Approvals. All governmental and third party approvals (including
     landlords' and other consents) necessary or, in the discretion of the
     Administrative Agent, advisable in connection with the continuing
     operations of the Borrower and its Subsidiaries and the transactions
     contemplated hereby shall have been obtained and be in full force and
     effect, except for such approvals as could not reasonably be expected to
     have a Material Adverse Effect.

          (d) Related Agreements. The Administrative Agent shall have received
     (in a form reasonably satisfactory to the Administrative Agent), with a
     copy for each Lender, true and correct copies, certified as to authenticity
     by the Borrower, of AAT Purchase Agreement and such other documents or
     instruments as may be reasonably requested by the Administrative Agent,
     including, without limitation, a copy of any debt instrument, security
     agreement or other material contract to which any of the Loan Parties may
     be a party.

          (e) Fees. The Lenders, the Arranger and the Administrative Agent shall
     have received all fees required to be paid, and all expenses for which
     invoices have been presented (including reasonable fees, disbursements and
     other charges of counsel to the Administrative Agent), on or before the
     Closing Date.

          (f) Business Plan. The Lenders shall have received a reasonably
     satisfactory business plan for fiscal years 2003-2007 and a reasonably
     satisfactory written analysis of the business and prospects of the Borrower
     and its Subsidiaries for the period from the Closing Date through fiscal
     year 2007.

          (g) Solvency Analysis. The Lenders shall have received a reasonably
     satisfactory solvency certificate of the chief financial officer of the
     Borrower or other senior executive officer of the Borrower satisfactory to
     the Lenders which shall document the solvency of the Borrower and its
     Subsidiaries considered as a whole after giving effect to the transactions
     contemplated hereby.

<PAGE>

                                                                              48

          (h) Lien Searches. The Administrative Agent shall have received the
     results of a recent lien search in each of the jurisdictions where assets
     of the Loan Parties are located, and such search shall reveal no liens on
     any of the assets of the Borrower or its Subsidiaries except for liens
     permitted by Section 6.3 or liens to be discharged on or prior to the
     Closing Date pursuant to documentation satisfactory to the Administrative
     Agent.

          (i) Environmental Reports. The Administrative Agent shall have
     received, with a copy for each Lender, all environmental reports specified
     by the Administrative Agent regarding environmental matters relating to the
     Borrower and/or any of its Subsidiaries. Such reports shall be prepared by
     an environmental consultant acceptable to the Administrative Agent and
     shall be satisfactory in form, scope and substance to the Lenders.

          (j) Closing Certificate; Certified Certificate of Incorporation; Good
     Standing. The Administrative Agent shall have received (i) a certificate of
     each Loan Party, dated the Closing Date, substantially in the form of
     Exhibit C, with appropriate insertions and attachments, including the
     certificate of incorporation of each Loan Party that is a corporation
     certified by the relevant authority of the jurisdiction of organization of
     such Loan Party, and (ii) a long form good standing certificate for each
     Loan Party from its jurisdiction of organization.

          (k) Legal Opinions. The Administrative Agent shall have received the
     executed legal opinion of Gunster, Yoakley & Stewart, P.A., counsel to the
     Borrower and its Subsidiaries, substantially in the form of Exhibit E. Such
     legal opinion shall cover such other matters incident to the transactions
     contemplated by this Agreement as the Administrative Agent may reasonably
     require.

          (l) Pledged Stock; Stock Power; Pledged Notes. The Administrative
     Agent shall have received (i) the certificates representing the shares of
     Capital Stock pledged pursuant to the Guarantee and Collateral Agreement,
     including the Capital Stock of the Borrower, together with an undated stock
     power for each such certificate executed in blank by a duly authorized
     officer of the pledgor thereof and (ii) each promissory note pledged to the
     Administrative Agent pursuant to the Guarantee and Collateral Agreement
     endorsed (without recourse) in blank (or accompanied by an executed
     transfer form in blank satisfactory to the Administrative Agent) by the
     pledgor thereof.

          (m) Filings, Registrations and Recordings. Each document (including,
     without limitation, any Uniform Commercial Code financing statement)
     required by the Security Documents or under law or reasonably requested by
     the Administrative Agent to be filed, registered or recorded in order to
     create in favor of the Administrative Agent, for the benefit of the
     Lenders, a perfected Lien on the Collateral described therein, prior and
     superior in right to any other Person (other than with respect to Liens
     expressly permitted by Section 6.3), shall be in proper form for filing,
     registration or recordation.

          (n) Insurance. The Administrative Agent shall have received insurance
     certificates satisfying the requirements of Section 5.5 below and Section
     5.3 of the Guarantee and Collateral Agreement.

<PAGE>

                                                                              49

          (o) AAT Initial Asset Sale. The following transactions shall have been
     consummated, in each case on terms and conditions reasonably satisfactory
     to the Lenders:

               (i) the First Closing of the AAT Initial Asset Sale shall have
          been consummated pursuant to the AAT Purchase Agreement;

               (ii) the Borrower shall have received at least $145,000,000 in
          gross cash proceeds from the AAT Initial Asset Sale; and

               (iii) the Administrative Agent shall have received satisfactory
          evidence that the fees and expenses to be incurred in connection with
          the AAT Initial Asset Sale shall not exceed $5,000,000.

          (p) Existing Credit Agreement. (i) The Administrative Agent shall have
     received satisfactory evidence that the Existing Credit Agreement shall
     have been terminated and all amounts thereunder shall have been paid in
     full and (ii) satisfactory arrangements shall have been made for the
     termination of all Liens granted in connection therewith.

          (q) Absence of Material Adverse Change. The Lenders shall be satisfied
     that there shall not have been any disruption or material adverse change in
     the markets in which the Borrower and its Subsidiaries operates that would
     have a material adverse effect on the financial condition Holdings, the
     Borrower and its Subsidiaries, individually or taken as a whole.

          (r) Due Diligence Investigation. Each of the Lenders shall have
     completed a satisfactory legal due diligence investigation of the Borrower
     and its Subsidiaries.

          (s) Mortgage Requirement. The Administrative Agent shall have received
     satisfactory legal opinions, certificates and other documents referred to
     in Annex A with respect to the Mortgaged Properties mortgaged on the
     Closing Date.

          4.2. Conditions to Each Extension of Credit. The agreement of each
Lender to make any extension of credit requested to be made by it on any date
(including, without limitation, its initial extension of credit) is subject to
the satisfaction of the following conditions precedent:

          (a) Representations and Warranties. Each of the representations and
     warranties made by any Loan Party in or pursuant to the Loan Documents
     shall be true and correct on and as of such date as if made on and as of
     such date except for such representations and warranties expressly stated
     to be made as of a specific earlier date, in which case such
     representations and warranties shall be true and correct as of such earlier
     date.

          (b) No Default. No Default or Event of Default shall have occurred and
     be continuing on such date or after giving effect to the extensions of
     credit requested to be made on such date.

<PAGE>

                                                                              50

Each borrowing by the Borrower hereunder shall constitute a representation and
warranty by the Borrower as of the date of such extension of credit that the
conditions contained in this Section 4.2 have been satisfied.

                        SECTION 5. AFFIRMATIVE COVENANTS

          The Borrower hereby agrees that, so long as the Commitments remain in
effect or any Loan or other amount is owing to any Lender or the Administrative
Agent hereunder, the Borrower shall and shall cause each of its Subsidiaries to:

          5.1. Financial Statements. Furnish to the Administrative Agent (and
the Administrative Agent shall furnish to each Lender):

          (a) as soon as available, but in any event within 90 days after the
     end of each fiscal year of the Borrower, a copy of the audited consolidated
     and unaudited consolidating balance sheets of the Borrower and its
     consolidated Subsidiaries, in each case as at the end of such year and the
     related audited consolidated and unaudited consolidating statements of
     income and related audited consolidated statements of cash flows for such
     year, setting forth in each case in comparative form the figures for the
     previous year, reported on, in the case of such audited financial
     statements, without a "going concern" or like qualification or exception,
     or qualification arising out of the scope of the audit, by Ernst & Young
     LLP or other independent certified public accountants of nationally
     recognized standing; and

          (b) as soon as available, but in any event not later than 45 days
     after the end of each of the first three quarterly periods of each fiscal
     year of the Borrower, (i) the unaudited consolidated and consolidating
     balance sheets of the Borrower and its consolidated Subsidiaries, in each
     case as at the end of such quarter, (ii) the related unaudited consolidated
     statements of income for such quarter and the portion of the fiscal year
     through the end of such quarter, (iii) the related unaudited consolidating
     statements of income for the portion of the fiscal year through the end of
     such quarter and (iv) related unaudited consolidated statements of cash
     flows for such quarter, setting forth in each case in comparative form the
     figures for the previous year, certified by a Responsible Officer as being
     fairly stated in all material respects (subject to normal year-end audit
     adjustments);

all such financial statements shall be complete and correct in all material
respects and shall be prepared in reasonable detail and in accordance with GAAP
applied consistently throughout the periods reflected therein and with prior
periods (except as approved by such accountants or officer, as the case may be,
and disclosed therein).

          5.2. Certificates; Other Information. Furnish to the Administrative
Agent (and the Administrative Agent shall furnish to each Lender) or, in the
case of clause (g), to the relevant Lender:

          (a) concurrently with the delivery of the financial statements
     referred to in Section 5.1(a), a certificate of the independent certified
     public accountants reporting on

<PAGE>

                                                                              51

     such financial statements stating that in making the examination necessary
     therefor no knowledge was obtained of any Default or Event of Default in
     respect of the financial covenants contained in Section 6.1, except as
     specified in such certificate;

          (b) concurrently with the delivery of any financial statements
     pursuant to Section 5.1, (i) a certificate of a Responsible Officer stating
     that, to the best of each such Responsible Officer's knowledge, each Loan
     Party during such period has observed or performed all of its covenants and
     other agreements, and satisfied every condition, contained in this
     Agreement and the other Loan Documents to which it is a party to be
     observed, performed or satisfied by it, and that such Responsible Officer
     has obtained no knowledge of any Default or Event of Default except as
     specified in such certificate and (ii) a Compliance Certificate containing
     all information and calculations necessary for determining compliance by
     the Borrower and its Subsidiaries with the provisions of this Agreement
     referred to therein as of the last day of the fiscal quarter or fiscal year
     of the Borrower, as the case may be, including a detailed report of (x)
     Capital Expenditures made during such period specifying amounts for
     maintenance and other types of Capital Expenditures, (y) Investments made
     pursuant to Section 6.8(f) and (z) Restricted Payments made by the Borrower
     to Holdings and a description of Holdings' use thereof;

          (c) as soon as available, and in any event no later than 45 days after
     the end of each fiscal year of the Borrower, (x) a detailed model for the
     period beginning with such fiscal year through and including 2007 in form
     and substance reasonably satisfactory to the Administrative Agent
     (collectively, the "Projections"), which Projections shall in each case be
     accompanied by a certificate of a Responsible Officer stating that such
     Projections are based on reasonable estimates, information and assumptions
     and that such Responsible Officer has no reason to believe that such
     Projections are incorrect or misleading in any material respect and (y) an
     annual tax analysis for such fiscal year in form and substance reasonably
     satisfactory to the Administrative Agent;

          (d) not later than ten Business Days prior to any proposed acquisition
     of any new Qualified Tower Portfolios (including real property sites for
     Towers), written notice of such proposed acquisition if the proposed cost
     exceeds $10,000,000 for any acquisition or series of related acquisitions
     and the proposed cost and projected revenue thereof (whether or not the
     costs of such acquisition are to be funded by the Borrower from its own
     sources or from the proceeds of Revolving Credit Loans). Such notice shall
     specify a description and the locations of the new towers (including towers
     owned by a Qualified Tower Portfolio), the name and address of the owner or
     lessee, as appropriate, of the real property on which they are located and
     a memorandum summarizing the results of the due diligence review of such
     acquisition or series of related acquisitions (including, without
     limitation, a discussion of the capacity and contemplated use of such new
     towers) and such other documents or information owned or within the control
     of the Borrower and its Subsidiaries as the Required Lenders may reasonably
     require;

          (e) on each of May 31, 2003, June 30, 2003, July 31, 2003 and within
     60 days after the end of each fiscal quarter thereafter, a certificate of a
     Responsible Officer demonstrating that the Borrower is in compliance with
     the Mortgage Requirement;

<PAGE>

                                                                              52

          (f) within five days after the same are sent, copies of all financial
     statements and reports that the Borrower sends to the holders of any class
     of its debt securities or public equity securities and, within five days
     after the same are filed, copies of all financial statements and reports
     that the Borrower and Holdings may make to, or file with, the SEC; and

          (g) promptly, such additional financial and other information as any
     Lender may from time to time reasonably request.

          5.3. Payment of Obligations. Pay, discharge or otherwise satisfy at or
before maturity or before they become delinquent, as the case may be, all its
material obligations of whatever nature, except where the amount or validity
thereof is currently being contested in good faith by appropriate proceedings
and reserves in conformity with GAAP with respect thereto have been provided on
the books of the Borrower or its Subsidiaries, as the case may be.

          5.4. Conduct of Business and Maintenance of Existence, etc. (a) (i)
Preserve, renew and keep in full force and effect its corporate existence and
(ii) take all reasonable action to maintain all rights, privileges and
franchises necessary or desirable in the normal conduct of its business, except,
in each case, as otherwise permitted by Section 6.4 and except, in the case of
clause (ii) above, to the extent that failure to do so could not reasonably be
expected to have a Material Adverse Effect; and (b) comply with all Contractual
Obligations and Requirements of Law except to the extent that failure to comply
therewith could not, in the aggregate, reasonably be expected to have a Material
Adverse Effect.

          5.5. Maintenance of Property; Insurance. (a) Keep all Property and
systems useful and necessary in its business in good working order and
condition, ordinary wear and tear excepted.

          (b) Carry and maintain, at its own expense, at least the minimum
insurance coverage set forth in this Section 5.5. The Borrower shall also carry
and maintain any other insurance that the Administrative Agent may reasonably
require from time to time. All insurance carried pursuant to this Section 5.5
shall be placed with such insurers having a minimum A.M. Best rating of A:X, and
be in such form, with terms, conditions, limits and deductibles as shall be
acceptable to the Administrative Agent.

          (i) All Risk Property Insurance. The Borrower shall maintain all risk
     property insurance covering against physical loss or damage, including but
     not limited to fire and extended coverage, collapse, flood and earth
     movement. Coverage shall be written on a replacement cost basis and shall
     contain an agreed amount endorsement reasonably satisfactory to the
     Administrative Agent waiving any coinsurance penalty;

          (ii) Business Interruption. As an extension of the insurance required
     under Section 5.5(b)(i), the Borrower shall maintain business interruption
     insurance, or such other similar coverage, covering extra expenses. Such
     insurance shall contain an agreed amount endorsement waiving any
     coinsurance penalty. The deductibles on this policy shall not be greater
     than 30 days;

<PAGE>

                                                                              53

          (iii) Comprehensive General Liability Insurance. The Borrower shall
     maintain comprehensive general liability insurance written on an occurrence
     basis with a limit of not less than $1,000,000. Such coverage shall
     include, but not be limited to, premises/operations, explosion, collapse,
     underground hazards, contractual liability, independent contractors,
     products/completed operations, property damage and personal injury
     liability. Such insurance shall not contain an exclusion for punitive or
     exemplary damages where insurable by law;

          (iv) Workers' Compensation/Employer's Liability. The Borrower shall
     maintain workers' compensation insurance in accordance with statutory
     provisions covering accidental injury, illness or death of an employee of
     the Borrower while at work or in the scope of his employment with the
     Borrower and employer's liability in an amount not less than $1,000,000;

          (v) Automobile Liability. The Borrower shall maintain Automobile
     Liability insurance covering owned, non-owned, leased, hired or borrowed
     vehicles against bodily injury or property damage. Such coverage shall have
     a limit of not less than $1,000,000;

          (vi) Excess/Umbrella Liability. The Borrower shall maintain excess or
     umbrella liability insurance in an amount not less than $25,000,000 written
     on an occurrence basis providing coverage limits excess of the insurance
     limits required under Sections 5.5(b)(iii), (b)(iv) (with respect to
     employer's liability only), and (b)(v). Such insurance shall follow form
     the primary insurances and drop down in case of exhaustion of underlying
     limits and/or aggregates. Such insurance shall not contain an exclusion for
     punitive or exemplary damages where insurable by law.

          (c) Maintain or cause to be maintained on all of the Mortgaged
Property located in an area identified as a special flood hazard area by the
Federal Emergency Management Agency or other applicable agency, flood insurance
in an amount required by applicable law, but in no event less than the maximum
limit of coverage available under the National Flood Insurance Reform Act of
1994, as amended (unless such flood insurance is unavailable based upon the
nature of improvements located on such Mortgaged Property).

          (d) Ensure that each insurance policy carried and maintained in
accordance with this Section 5.5 is endorsed as follows:

          (i) The Borrower or its Subsidiary, as applicable, shall be the named
     insured and the Administrative Agent shall be additional insured and sole
     loss payee with respect to policies described in Sections 5.5(b)(i) and
     (b)(ii). The Borrower or its Subsidiary, as applicable, shall be the named
     insured and the Administrative Agent shall be additional insured with
     respect to policies described in Sections 5.5(b)(iii), (b)(iv) (to the
     extent allowed by law), (b)(v), and (b)(vi). It shall be understood that
     any obligation imposed upon the Borrower or any of its Subsidiaries
     including but not limited to the obligation to pay premiums, shall be the
     sole obligation of the Borrower or such Subsidiary and not that of the
     Administrative Agent;

<PAGE>

                                                                              54

          (ii) with respect to the property policies described in Sections
     5.5(b)(i) and (b)(ii), the interests of the Administrative Agent shall not
     be invalidated by any action or inaction of the Borrower or any of its
     Subsidiaries, or any other person, and shall insure the Administrative
     Agent regardless of any breach or violation by the Borrower or any of its
     Subsidiaries or any other person, of any warranties, declarations or
     conditions of such policies;

          (iii) inasmuch as the liability policies are written to cover more
     than one insured, all terms conditions, insuring agreements and
     endorsements, with the exception of the limits of liability, shall operate
     in the same manner as if there were a separate policy covering each
     insured;

          (iv) the insurers thereunder shall waive all rights of subrogation
     against the Administrative Agent any right of setoff or counterclaim and
     any other right to deduction, whether by attachment or otherwise;

          (v) such insurance shall be primary without right of contribution of
     any other insurance carried by or on behalf of the Administrative Agent
     with respect to their interests as such in the Equipment; and

          (vi) if such insurance is canceled for any reason whatsoever,
     including nonpayment of premium, or any changes are initiated by the
     Borrower or any of its Subsidiaries or carrier which affect the interests
     of the Administrative Agent, such cancellation or change shall not be
     effective as to the Administrative Agent until 30 days, except for
     non-payment of premium which shall be ten days, after receipt by the
     Administrative Agent of written notice sent by registered mail from such
     insurer.

          (e) At each policy renewal, but not less than annually, provide to the
Administrative Agent approved certification from each insurer or by an
authorized representative of each insurer. Such certification shall identify the
underwriters, the type of insurance, the limits, deductibles, and term thereof
and shall specifically list the special provisions delineated in Section 5.5(d)
above for such insurance required for this Section 5.5.

          (f) (i) Pay as they become due all premiums for such insurance, and
(ii) not later than 15 days prior to the expiration of each policy to be
furnished pursuant to the provisions of this Section, deliver an opinion from
the Borrower's independent insurance broker, acceptable to the Administrative
Agent, stating that all premiums then due have been paid and that, in the
opinion of such broker, the insurance then maintained by the Borrower is in
accordance with this section. Furthermore, upon its first knowledge, such broker
shall advise the Administrative Agent promptly in writing of any default in the
payment of any premiums or any other act or omission, on the part of any person,
which might invalidate or render unenforceable, in whole or in part, any
insurance provided by the Borrower hereunder.

          (g) Promptly comply with and conform to (i) all provisions of each
such insurance policy, and (ii) all requirements of the insurers applicable to
the Borrower and its Subsidiaries or to any of the Mortgaged Property or to the
use, manner of use, occupancy, possession, operation, maintenance, alteration or
repair of any of the Mortgaged Property. The

<PAGE>

                                                                              55

Borrower and its Subsidiaries shall not use or permit the use of the Mortgaged
Property in any manner which would permit any insurer to cancel any insurance
policy or void coverage required to be maintained by this Section.

          (h) If (x) the Mortgaged Property, or any part thereof, shall be
destroyed or damaged and the cost to repair and restore such destruction or
damage shall exceed $25,000 in the Borrower's commercially reasonable judgment
or (y) any Tower shall be substantially destroyed, give immediate notice thereof
to the Administrative Agent. All insurance proceeds shall be paid to the
Administrative Agent to be applied to prepay the Loans pursuant to Section
2.10(a).

          (i) At the option of the Borrower, maintain insurance required under
this Section 5.5 by means of one or more blanket insurance policies; provided,
however, that (A) any such policy shall specify, or the Borrower shall furnish
to the Administrative Agent a written statement from the insurer so specifying,
the maximum amount of the total insurance afforded by such blanket policy that
is allocated to the Mortgaged Property and any sublimits in such blanket policy
applicable to the Mortgaged Property, (B) each such blanket policy shall include
an endorsement providing that, in the event of a loss resulting from an insured
peril, insurance proceeds shall be allocated to the Mortgaged Property in an
amount equal to the coverages required to be maintained by the Borrower as
provided above and (C) the protection afforded under any such blanket policy
shall be no less than that which would have been afforded under a separate
policy or policies relating only to the Mortgaged Property.

          (j) Make available to the Administrative Agent, upon reasonable
advance notice, the insurance policies carried and maintained with respect to
the obligations of the Borrower and its Subsidiaries under this Section 5.5.
Upon request, the Borrower shall furnish the Administrative Agent with copies of
all insurance policies, binders, and cover notes or other evidence of such
insurance. Notwithstanding anything to the contrary herein, no provision of this
Section 5.5 or any provision of this Agreement shall impose on the
Administrative Agent any duty or obligation to verify the existence or adequacy
of the insurance coverage maintained by the Borrower. The Administrative Agent,
at its sole option, may obtain such insurance if not provided by the Borrower
and in such event, the Borrower shall reimburse the Administrative Agent upon
demand for the cost thereof together with interest.

          5.6. Inspection of Property; Books and Records; Discussions. (a) Keep
proper books of records and account in which full, true and correct entries in
conformity with GAAP and all Requirements of Law shall be made of all dealings
and transactions in relation to its business and activities and (b) permit
representatives of any Lender to visit and inspect any of its properties and
examine and make abstracts from any of its books and records at any reasonable
time and as often as may reasonably be desired (such visits and inspections to
be coordinated by the Lenders to the extent reasonably practicable) and to
discuss the business, operations, properties and financial and other condition
of the Borrower and its Subsidiaries with officers of the Borrower and its
Subsidiaries and with its independent certified public accountants; provided
that if no Default or Event of Default has occurred, such visits shall be
limited to once per fiscal quarter and such discussions shall be limited to once
per week.

<PAGE>

                                                                              56

          5.7. Notices. Promptly give notice to the Administrative Agent and
each Lender of:

          (a) the occurrence of any Default or Event of Default;

          (b) any (i) default or event of default under any Contractual
     Obligation of the Borrower or any of its Subsidiaries beyond any period of
     grace provided in such Contractual Obligation or (ii) litigation,
     investigation or proceeding which may exist at any time between the
     Borrower or any of its Subsidiaries and any Governmental Authority, that in
     either case, if not cured or if adversely determined, as the case may be,
     could reasonably be expected to have a Material Adverse Effect;

          (c) any litigation or proceeding affecting the Borrower or any of its
     Subsidiaries in which the amount involved is $5,000,000 or more and not
     covered by insurance or in which injunctive or similar relief is sought
     (other than injunctive relief related to a land development approval for a
     Tower);

          (d) the following events, as soon as possible and in any event within
     30 days after the Borrower knows or has reason to know thereof: (i) the
     occurrence of any Reportable Event with respect to any Plan, a failure to
     make any required contribution to a Plan, the creation of any Lien in favor
     of the PBGC or a Plan or any withdrawal from, or the termination,
     Reorganization or Insolvency of, any Multiemployer Plan or (ii) the
     institution of proceedings or the taking of any other action by the PBGC or
     the Borrower or any Commonly Controlled Entity or any Multiemployer Plan
     with respect to the withdrawal from, or the termination, Reorganization or
     Insolvency of, any Plan;

          (e) the following events, as soon as possible and in any event within
     ten days after the Borrower knows or has reason to know thereof: (i) any
     development, event, or condition that, individually or in the aggregate
     with other related developments, events or conditions, could reasonably be
     expected to result in the Borrower and its Subsidiaries sustaining a
     Material Environmental Loss; (ii) any notice that any governmental
     authority may deny any application for a material Environmental Permit
     sought by, or revoke or refuse to renew any material Environmental Permit
     held by, the Borrower or any of its Subsidiaries; and (iii) any
     Governmental Authority has identified the Borrower or any of its
     Subsidiaries as a potentially responsible party under any Environmental Law
     for the cleanup of Materials of Environmental Concern at any location,
     whether or not owned, leased or operated by the Borrower or its
     Subsidiaries; and

          (f) any development or event that has had or could reasonably be
     expected to have a Material Adverse Effect.

Each notice pursuant to this Section shall be accompanied by a statement of a
Responsible Officer setting forth details of the occurrence referred to therein
and stating what action the Borrower or the relevant Subsidiary proposes to take
with respect thereto.

          5.8. Environmental Laws. (a) Comply in all material respects with, and
use commercially reasonable efforts to ensure compliance in all material
respects by all tenants and

<PAGE>

                                                                              57

subtenants, if any, with, all applicable Environmental Laws, and obtain and
comply in all material respects with and maintain any and all Environmental
Permits required for any of their current or intended operations or for any
property owned, leased or otherwise operated by any of them, and use
commercially reasonable efforts to ensure that all tenants and subtenants obtain
and comply in all material respects with and maintain, any and all Environmental
Permits required of them by any applicable Environmental Laws.

          (b) Conduct and complete all investigations, studies, sampling and
testing, and all remedial, removal and other actions required under
Environmental Laws and the SBA Environmental Analysis Policy and promptly comply
with all orders and directives of all Governmental Authorities regarding
Environmental Laws.

          (c) Generate, use, treat, store, release, dispose of, and otherwise
manage Materials of Environmental Concern in a manner that would not reasonably
be expected to result in a material liability to the Borrower or any of its
Subsidiaries or to materially affect any real property owned or leased by any of
them; and take reasonable efforts to prevent any other Person from generating,
using, treating, storing, releasing, disposing of, or otherwise managing
Materials of Environmental Concern in a manner that could reasonably be expected
to result in a material liability to, or materially affect any real property
owned or operated by, the Borrower or any of its Subsidiaries.

          5.9. Additional Collateral, etc. (a) With respect to any personal
Property acquired after the Closing Date by the Borrower or any of its
Subsidiaries (other than (x) any Property described in paragraph (b) or
paragraph (c) of this Section, (y) any Property subject to a Lien expressly
permitted by Section 6.3(g) and (z) Property acquired by an Excluded Foreign
Subsidiary) as to which the Administrative Agent, for the benefit of the
Lenders, does not have a perfected Lien, promptly (i) execute and deliver to the
Administrative Agent such amendments to the Guarantee and Collateral Agreement
or such other documents as the Administrative Agent deems necessary or advisable
to grant to the Administrative Agent, for the benefit of the Lenders, a security
interest in such Property and (ii) take all actions necessary or advisable to
grant to the Administrative Agent, for the benefit of the Lenders, a perfected
first priority security interest in such Property, including without limitation,
the filing of Uniform Commercial Code financing statements in such jurisdictions
as may be required by the Guarantee and Collateral Agreement or by law or as may
be requested by the Administrative Agent.

          (b) With respect to any fee or leasehold interest in any real property
or fixtures constituting or consisting of Tower sites or Towers acquired or
built after the Closing Date by the Borrower or any of its Subsidiaries (i)
promptly execute and deliver a first priority Mortgage, substantially in the
form of Exhibit H-1, in favor of the Administrative Agent, for the benefit of
the Lenders, covering such real property, if and to the extent required in order
to cause the Mortgage Requirement to continue to be satisfied, (ii) if requested
by the Administrative Agent, provide the Lenders with any consents or estoppels
reasonably deemed necessary or advisable by the Administrative Agent in
connection with such Mortgage, each of the foregoing in form and substance
reasonably satisfactory to the Administrative Agent, (iii) if requested by the
Administrative Agent, deliver to the Administrative Agent legal opinions
relating to the matters described above, which opinions shall be in form and
substance, and from counsel, reasonably satisfactory to the Administrative Agent
or (iv) with respect to any fee interest, a

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                                                                              58

copy of the deed through which such parcel was acquired or, with respect to any
leasehold interest, a copy of the lease through which such leasehold was
acquired, together with evidence that such lease, or a memorandum of lease with
respect thereto, has been recorded prior to such Mortgage, if required by the
laws of the relevant state in order to obtain a leasehold mortgage of record in
respect of such leasehold.

          (c) With respect to any fee interest in any real property having a
value (together with improvements thereof) of at least $2,000,000 acquired after
the Closing Date by the Borrower or any of its Subsidiaries (other than any such
real property on which a Tower or a Tower site is located or which is owned by
an Excluded Foreign Subsidiary or subject to a Lien expressly permitted by
Section 6.3(g)), promptly (i) execute and deliver a first priority Mortgage
substantially in the form of Exhibit H-2 in favor of the Administrative Agent,
for the benefit of the Lenders, covering such real property, (ii) if requested
by the Administrative Agent, provide the Lenders with (x) title and extended
coverage insurance covering such real property in an amount at least equal to
the purchase price of such real property (or such other amount as shall be
reasonably specified by the Administrative Agent) as well as a current ALTA
survey thereof, together with a surveyor's certificate and (y) any consents or
estoppels reasonably deemed necessary or advisable by the Administrative Agent
in connection with such Mortgage, each of the foregoing in form and substance
reasonably satisfactory to the Administrative Agent and (iii) if requested by
the Administrative Agent, deliver to the Administrative Agent legal opinions
relating to the matters described above, which opinions shall be in form and
substance, and from counsel, reasonably satisfactory to the Administrative
Agent.

          (d) With respect to any new Subsidiary (other than an Excluded Foreign
Subsidiary) created or acquired after the Closing Date (which, for the purposes
of this paragraph, shall include any existing Subsidiary that ceases to be an
Excluded Foreign Subsidiary), by the Borrower or any of its Subsidiaries,
promptly (i) execute and deliver to the Administrative Agent such amendments to
the Guarantee and Collateral Agreement as the Administrative Agent deems
necessary or advisable to grant to the Administrative Agent, for the benefit of
the Lenders, a perfected first priority security interest in the Capital Stock
of such new Subsidiary that is owned by the Borrower or any of its Subsidiaries,
(ii) deliver to the Administrative Agent the certificates representing such
Capital Stock, together with undated stock powers, in blank, executed and
delivered by a duly authorized officer of the Borrower or such Subsidiary, as
the case may be, (iii) cause such new Subsidiary (A) to become a party to the
Guarantee and Collateral Agreement and (B) to take such actions necessary or
advisable to grant to the Administrative Agent for the benefit of the Lenders a
perfected first priority security interest in the Collateral described in the
Guarantee and Collateral Agreement with respect to such new Subsidiary,
including, without limitation, the filing of Uniform Commercial Code financing
statements in such jurisdictions as may be required by the Guarantee and
Collateral Agreement or by law or as may be requested by the Administrative
Agent, and (iv) if requested by the Administrative Agent, deliver to the
Administrative Agent legal opinions relating to the matters described above,
which opinions shall be in form and substance, and from counsel, reasonably
satisfactory to the Administrative Agent.

          (e) With respect to any new Excluded Foreign Subsidiary created or
acquired after the Closing Date by the Borrower or any of its Subsidiaries,
promptly (i) execute and deliver to the Administrative Agent such amendments to
the Guarantee and Collateral

<PAGE>

                                                                              59

Agreement as the Administrative Agent deems necessary or advisable in order to
grant to the Administrative Agent, for the benefit of the Lenders, a perfected
first priority security interest in the Capital Stock of such new Subsidiary
that is owned by the Borrower or any of its Subsidiaries (provided that in no
event shall more than 65% of the total outstanding Capital Stock of any such new
Subsidiary be required to be so pledged), (ii) deliver to the Administrative
Agent the certificates representing such Capital Stock, together with undated
stock powers, in blank, executed and delivered by a duly authorized officer of
the Borrower or such Subsidiary, as the case may be, and take such other action
as may be necessary or, in the opinion of the Administrative Agent, desirable to
perfect the Lien of the Administrative Agent thereon, and (iii) if requested by
the Administrative Agent, deliver to the Administrative Agent legal opinions
relating to the matters described above, which opinions shall be in form and
substance, and from counsel, reasonably satisfactory to the Administrative
Agent.

          5.10. Further Assurances. From time to time execute and deliver, or
cause to be executed and delivered, such additional instruments, certificates or
documents, and take all such actions, as the Administrative Agent may reasonably
request, for the purposes of implementing or effectuating the provisions of this
Agreement and the other Loan Documents, or of more fully perfecting or renewing
the rights of the Administrative Agent and the Lenders with respect to the
Collateral (or with respect to any additions thereto or replacements or proceeds
thereof or with respect to any other property or assets hereafter acquired by
the Borrower or any Subsidiary which may be deemed to be part of the Collateral)
pursuant hereto or thereto. Upon the exercise by the Administrative Agent or any
Lender of any power, right, privilege or remedy pursuant to this Agreement or
the other Loan Documents which requires any consent, approval, recording,
qualification or authorization of any Governmental Authority, the Borrower will
execute and deliver, or will cause the execution and delivery of, all
applications, certifications, instruments and other documents and papers that
the Administrative Agent or such Lender may be required to obtain from the
Borrower or any of its Subsidiaries for such governmental consent, approval,
recording, qualification or authorization.

          5.11. Maintenance of Separate Existence. Do all things necessary to
continue to be readily distinguishable from Holdings and maintain its existence
separate and apart from that of Holdings including, without limitation:

          (a) practicing and adhering to organizational formalities, such as
     maintaining appropriate books and records;

          (b) observing all organizational formalities in connection with all
     dealings between itself and Holdings;

          (c) observing all procedures required by its organizational documents
     and the laws of the state of its organization;

          (d) acting solely in its name and through its duly authorized officers
     or agents in the conduct of its businesses;

          (e) maintaining office space separate and apart from that of Holdings
     (even if such office space is subleased from or is on or near premises
     occupied by Holdings);

<PAGE>

                                                                              60

          (f) maintaining at least one director who is not and never was (x) a
     stockholder, member, partner, director, officer, employee, Affiliate,
     associate, creditor or independent contractor of Holdings or any of its
     associates, or (y) any person owning directly or beneficially any
     outstanding shares of common stock of Holdings or any of its Affiliates, or
     a stockholder, director, officer, employee, Affiliate, associate, creditor
     or independent contractor of such beneficial owner or any of such
     beneficial owner's Affiliates or associates, or (z) a member of the
     immediate family of any person described above;

          (g) maintaining its deposit and other bank accounts and all of its
     assets separate from those of Holdings;

          (h) maintaining its financial records separate and apart from those of
     Holdings;

          (i) not suggesting in any way, within its financial statements, that
     its assets are available to pay the claims of creditors of Holdings;

          (j) owning or leasing (including through shared arrangements with
     Affiliates) all office furniture and equipment necessary to operate its
     business;

          (k) ensuring that the responsible officers of each of the Borrower and
     its Subsidiaries duly authorized in accordance with its organizational
     documents, duly authorize all of its actions;

          (l) ensuring the receipt of proper authorization, when necessary, in
     accordance with the terms of the its organizational documents for its
     actions;

          (m) not (A) having or incurring any Indebtedness to Holdings (except
     for any such Indebtedness which is (i) unsecured, (ii) subordinated to the
     Obligations such that (x) no portion of the principal of such Indebtedness
     shall be required to be paid, whether by stated maturity, mandatory or
     scheduled prepayment or redemption or otherwise, prior to the date which is
     91 days after the Maturity Date, and (y) no portion of interest of such
     Indebtedness may be paid after the occurrence of, and during the
     continuation of, a Default or an Event of Default and (iii) the documents
     and instruments pursuant to which such Indebtedness shall be issued or
     outstanding shall contain (x) no financial covenants or cross-default
     provisions and (y) no provisions limiting amendments to, or consents,
     waivers or other modifications with respect to, this Agreement or any other
     Loan Document); (B) guaranteeing or otherwise becoming liable for any
     obligations of Holdings; (C) having obligations guaranteed by Holdings; (D)
     acquiring any obligations or securities of, or making any loans or advances
     to, Holdings; (E) holding itself out as responsible for debts of Holdings
     or for decisions or actions with respect to the affairs of Holdings; (F)
     operating or purporting to operate as an integrated, single economic unit
     with respect to Holdings; (G) seeking to obtain credit or incur any
     obligation to any third party based upon the assets of Holdings; and (H)
     inducing any such third party to reasonably rely on the creditworthiness of
     Holdings;

<PAGE>

                                                                              61

          (n) having separate stationery from Holdings;

          (o) allocating, on an arm's length basis, all shared corporate
     operating services, leases and expenses, including, without limitation,
     those associated with the services of shared executive officers, employees,
     consultants and agents, shared computer and other office equipment and
     software and shared telephone numbers; and otherwise refraining from
     engaging in any transaction with any of Holdings unless such transaction is
     (x) on terms and conditions no less favorable to the Borrower or any of its
     Subsidiaries than transactions consummated on an arms-length basis with
     unaffiliated Persons and (y) only with the prior approval and authorization
     in accordance with the Borrower's or such Subsidiary's, as the case may be,
     organizational documents, including at least one of the independent
     directors;

          (p) refraining from filing or otherwise initiating or supporting the
     filing of a motion in any bankruptcy or other insolvency proceeding
     involving Holdings to substantively consolidate Holdings with such Borrower
     or any of its Subsidiaries;

          (q) remaining Solvent;

          (r) conducting all of its business (whether written or oral) solely in
     its own name so as not to mislead others as to the identity of each of
     Holdings, the Borrower and any Affiliates of Holdings or the Borrower; and

          (s) maintaining a record with respect to any asset purchased from
     Holdings, including bills of sale (or any similar instrument of assignment)
     and, if appropriate, filings under the Uniform Commercial Code.

          5.12. Mortgages. With respect to any Tower or Tower site which is not
covered by a Mortgage pursuant to Section 4.1(a)(iii), to the extent required to
remain in compliance with the Mortgage Requirement, execute and deliver to the
Administrative Agent, in accordance with the procedures set forth in Annex A,
Mortgages in respect of any such properties and deliver to the Administrative
Agent such other documentation specified in Annex A, including an opinion of
local counsel in the state in which such Tower or Tower site is located covering
such matters as the Administrative Agent may reasonably require. In addition to
the documents specified in Annex A, the Borrower shall provide such other
documentation as the Administrative Agent may from time to time reasonably
request relating to the Mortgaged Properties and the Mortgages.

                          Section 6. NEGATIVE COVENANTS

          The Borrower hereby agrees that, so long as the Commitments remain in
effect or any Loan or other amount is owing to any Lender or the Administrative
Agent hereunder, the Borrower shall not, and shall not permit any of its
Subsidiaries to, directly or indirectly:

          6.1. Financial Condition Covenants.

          (a) Consolidated Total Debt to Annualized Cash EBITDA Ratio. Permit
     the ratio of (i) Consolidated Total Debt on any date during any period set
     forth below to

<PAGE>

                                                                              62

     (ii) Annualized Cash EBITDA of the Borrower and its Subsidiaries for the
     fiscal quarter most recently ended on or prior to such date to exceed the
     ratio set forth below opposite such period:

     Fiscal Quarter                         Ratio
     --------------                         -----
     Closing Date to December 31, 2004      2.90x
     January 1, 2005 and thereafter         2.50x

          (b) Consolidated Cash EBITDA to Consolidated Cash Interest Expense
     Ratio. Permit the ratio of (i) Consolidated Cash EBITDA for any fiscal
     quarter of the Borrower to (ii) Consolidated Cash Interest Expense accrued
     by the Borrower and its Subsidiaries during such quarter to be less than
     4.00 to 1.00.

          (c) Annualized Cash EBITDA to Pro Forma Debt Service Ratio. Permit the
     ratio of (i) Annualized Cash EBITDA for any fiscal quarter of the Borrower
     to (ii) Pro Forma Debt Service for such fiscal quarter to be less than 1.10
     to 1.00.

          (d) Consolidated Fixed Charge Coverage Ratio. Permit the Consolidated
     Fixed Charge Coverage Ratio for any fiscal quarter of the Borrower to be
     less than 1.50 to 1.00.

          (e) Consolidated Total Debt per Tower. Permit on any date the quotient
     of (i) Consolidated Total Debt on such date divided by (ii) the number of
     Qualified Towers owned by the Borrower and its Subsidiaries on such date,
     to exceed $75,000.

          6.2. Limitation on Indebtedness. Create, incur, assume or suffer to
exist any Indebtedness, except:

          (a) Indebtedness of any Loan Party pursuant to any Loan Document;

          (b) Indebtedness of the Borrower to any Subsidiary Guarantor and of
     any Wholly Owned Subsidiary Guarantor to the Borrower or any other
     Subsidiary;

          (c) Indebtedness of the Borrower or any Subsidiary (including, without
     limitation, Capital Lease Obligations) secured by Liens permitted by
     Section 6.3(g) in an aggregate principal amount not to exceed $3,000,000 at
     any one time outstanding;

          (d) Indebtedness outstanding on the date hereof and listed on Schedule
     6.2(d) and any refinancings, refundings, renewals or extensions thereof
     (without any increase in the principal amount thereof or any shortening of
     the maturity of any principal amount thereof);

          (e) Guarantee Obligations made in the ordinary course of business by
     the Borrower or any of its Subsidiaries of obligations of the Borrower or
     any Subsidiary Guarantor; and

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                                                                              63

          (f) unsecured Indebtedness owing to sellers of Qualified Tower
     Portfolios and constituting a portion of the consideration for the
     acquisition of such Qualified Tower Portfolios by the Borrower or a
     Subsidiary Guarantor, so long as (x) such Indebtedness (excluding any
     deferred purchase consideration which is contingent and existing on the
     Closing Date) is subordinated to the Obligations on substantially the terms
     of Schedule 6.2(f), (y) the aggregate principal amount of all Indebtedness
     under this Section 6.2(f) at any one time outstanding shall not exceed
     $15,000,000 (including any deferred purchase consideration which is
     contingent) and (z) the aggregate amount of all deferred purchase
     consideration which is contingent under this Section 6.2(f) at any one time
     outstanding shall not exceed $10,000,000.

          6.3. Limitation on Liens. Create, incur, assume or suffer to exist any
Lien upon any of its Property, whether now owned or hereafter acquired, except
for:

          (a) Liens for taxes not yet due or which are being contested in good
     faith by appropriate proceedings, provided that adequate reserves with
     respect thereto are maintained on the books of the Borrower or its
     Subsidiaries, as the case may be, in conformity with GAAP;

          (b) carriers', warehousemen's, mechanics', materialmen's, repairmen's
     or other like Liens arising in the ordinary course of business which are
     not overdue for a period of more than 30 days or that are being contested
     in good faith by appropriate proceedings;

          (c) pledges or deposits in connection with workers' compensation,
     unemployment insurance and other social security legislation;

          (d) deposits to secure the performance of bids, trade contracts (other
     than for borrowed money), leases, statutory obligations, surety and appeal
     bonds, performance bonds and other obligations of a like nature incurred in
     the ordinary course of business, and deposits to secure obligations under
     contracts to purchase towers or other related assets;

          (e) easements, rights-of-way, restrictions and other similar
     encumbrances incurred in the ordinary course of business that, in the
     aggregate, are not substantial in amount and which do not in any case
     materially detract from the value of the Property subject thereto or
     materially interfere with the ordinary conduct of the business of the
     Borrower or any of its Subsidiaries;

          (f) Liens in existence on the date hereof listed on Schedule 6.3(f),
     securing Indebtedness permitted by Section 6.2(d), provided that no such
     Lien is spread to cover any additional Property after the Closing Date and
     that the amount of Indebtedness secured thereby is not increased;

          (g) Liens securing Indebtedness of the Borrower or any other
     Subsidiary incurred pursuant to Section 6.2(c) to finance the acquisition
     of fixed or capital assets, provided that (1) such Liens shall be created
     substantially simultaneously with the

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                                                                              64

     acquisition of such fixed or capital assets, (2) such Liens do not at any
     time encumber any Property other than the Property financed by such
     Indebtedness and (3) the amount of Indebtedness secured thereby is not
     increased;

          (h) Liens created pursuant to the Security Documents;

          (i) any interest or title of a lessor under any lease entered into by
     the Borrower or any other Subsidiary in the ordinary course of its business
     and covering only the assets so leased (including landlord's Liens on any
     property placed on the property subject to such lease); and

          (j) Liens created in favor of AAT Communications Corp. on the AAT
     Indemnity Escrow Account pursuant to the AAT Purchase Agreement and the AAT
     Indemnity Escrow Agreement.

          6.4. Limitation on Fundamental Changes. Enter into any merger,
consolidation or amalgamation, or liquidate, wind up or dissolve itself (or
suffer any liquidation or dissolution), or Dispose of all or substantially all
of its Property or business, except that:

          (a) any Subsidiary of the Borrower may be merged or consolidated with
     or into the Borrower (provided that the Borrower shall be the continuing or
     surviving corporation) or with or into any Subsidiary Guarantor (provided
     that the Subsidiary Guarantor shall be the continuing or surviving
     corporation);

          (b) any Subsidiary of the Borrower may Dispose of any or all of its
     assets (upon voluntary liquidation or otherwise) to the Borrower or any
     Subsidiary Guarantor; and

          (c) any Subsidiary of the Borrower may be dissolved upon transfer of
     all of such Subsidiary's assets to a Subsidiary Guarantor or the Borrower.

          6.5. Limitation on Disposition of Property. Dispose of any of its
Property (including, without limitation, receivables and leasehold interests),
whether now owned or hereafter acquired, or, in the case of any Subsidiary,
issue or sell any shares of such Subsidiary's Capital Stock to any Person,
except:

          (a) the Disposition in the ordinary course of business of obsolete or
     worn out property, or surplus real property not needed in the Borrower's
     business;

          (b) the sale of inventory in the ordinary course of business
     (including, without limitation, the leasing of space on Towers) and the
     sale of accounts receivable in the ordinary course of business which, in
     the reasonable discretion of the Borrower, should be sold to a collection
     agency not to exceed $1,000,000 in the aggregate for any fiscal year of the
     Borrower;

          (c) Dispositions permitted by Section 6.4(b) and Dispositions of Cash
     Equivalents;

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                                                                              65

          (d) the sale or issuance of any Subsidiary's Capital Stock to the
     Borrower or any Subsidiary Guarantor;

          (e) the Disposition of other assets having a fair market value not to
     exceed $1,000,000 in the aggregate for any fiscal year of the Borrower;

          (f) the Disposition of Towers in exchange for towers with Total Tower
     Revenue at least equal in amount to the revenue of such Disposed Towers;

          (g) any Asset Sale or Recovery Event, provided, (x) in each case, that
     the requirements of Section 2.10(a) or 2.10(b),as applicable, are complied
     with in connection therewith and (y) in the case of any Asset Sale, at
     least 90% of the consideration payable for such Asset Sale is paid in cash
     on the date of such Disposition;

          (h) Dispositions of (i) non-Qualified Towers, (ii) work-in-progress
     related to cancelled sites, (iii) assets related to the Services Business,
     provided that, in each case, requirements of Section 2.10(c) are complied
     with;

          (i) the Disposition of Towers or Tower sites by the Borrower or any of
     its Subsidiaries to a Subsidiary Guarantor; provided that, after giving
     effect to any Disposition to a Subsidiary Guarantor, such Towers and Tower
     sites are subject to a Mortgage pursuant to Section 5.9(b);

          (j) Dispositions of Towers or Tower sites (and any related assets)
     pursuant to the First Closing and the Second Closing under the AAT Initial
     Asset Sale by the Borrower or any of its Subsidiaries pursuant to the AAT
     Initial Asset Sale, provided that, the net cash proceeds of the AAT Initial
     Asset Sale may only be used (i) to repay the loans outstanding under the
     Existing Credit Facility pursuant to Section 4.1(p) or (ii) repay Revolving
     Credit Loans pursuant to Section 2.10(c); and

          (k) (i) Disposition of Towers or Tower sites (and any related assets)
     located in Wisconsin (the "Option Towers") pursuant to a Wisconsin Notice,
     and any Closing (other than the First Closing and the Second Closing) (as
     each such term is defined in the AAT Purchase Agreement in effect on the
     date hereof) and (ii) in the event that the Option Towers are not Disposed
     of pursuant to a Wisconsin Notice, Disposition of Towers or Tower sites
     (and any related assets) on or prior to June 30, 2003 with an aggregate
     Current TCF (as defined in the AAT Purchase Agreement) for all such Towers
     or Tower sites Disposed of pursuant to this clause (ii) not exceeding
     $4,300,000, provided that, in each case, the requirements of Section
     2.10(c) are complied with.

          6.6. Limitation on Restricted Payments. Declare or pay any dividend
(other than dividends payable solely in common stock of the Person making such
dividend) on, or make any payment on account of, or set apart assets for a
sinking or other analogous fund for, the purchase, redemption, defeasance,
retirement or other acquisition of, any Capital Stock of the Borrower or any
Subsidiary, whether now or hereafter outstanding, or make any other distribution
in respect thereof, either directly or indirectly, whether in cash or property
or in obligations of the Borrower or any Subsidiary, or enter into any
derivatives or other transaction

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                                                                              66

with any financial institution, commodities or stock exchange or clearinghouse
(a "Derivatives Counterparty") obligating the Borrower or any Subsidiary to make
payments to such Derivatives Counterparty as a result of any change in market
value of any such Capital Stock (collectively, "Restricted Payments"), except
that so long as no Default or Event of Default exists immediately before and
after giving effect thereto:

          (a) any Subsidiary may make Restricted Payments to the Borrower or any
     Subsidiary Guarantor;

          (b) the Borrower may make Restricted Payments to Holdings to enable
     Holdings to pay mandatory cash interest on the Senior Discount Notes and
     the Senior Notes in accordance with their respective terms; and

          (c) the Borrower may pay dividends to Holdings (i) to permit Holdings
     to pay corporate overhead expenses incurred in the ordinary course of
     business not to exceed $5,000,000 in any fiscal year, (ii) in an amount
     equal to the lesser of (A) the amount of Holdings' actual cash tax
     liability and (B) the amount of taxes which are attributable to the
     Borrower and its Subsidiaries as part of the consolidated group that
     includes Holdings, (iii) in an aggregate amount not to exceed $1,000,000 to
     permit Holdings to redeem the Preferred Stock Purchase Rights in accordance
     with their terms and to make payments in lieu of issuing fractional shares
     of Capital Stock of Holdings in connection with the exercise of the
     Preferred Stock Purchase Rights and (iv) in an amount not exceeding the
     Applicable Amount for the purpose of repurchasing Senior Discount Notes or
     Senior Notes; provided that, in each case, no Event of -------- Default
     shall have occurred and be continuing on the date of such dividend or after
     giving effect to such dividend.

          6.7. Limitation on Capital Expenditures.

          Make or commit to make any cash Capital Expenditure, except

          (a) maintenance Capital Expenditures of the Borrower and its
Subsidiaries in the ordinary course of business (other than any amounts used to
build Towers or acquire Qualified Tower Portfolios) not exceeding $10,000,000
(x) during the period from the Closing Date through December 31, 2003 and (y)
during each fiscal year of the Borrower thereafter;

          (b) cash Capital Expenditures in connection with the construction of,
or "works in process" with respect to, no more than 50 Towers in the aggregate
at any one time (including any arrangements in effect on the Closing Date and
Towers acquired pursuant to Section 6.8(f)); and

          (c) Capital Expenditures (other than Capital Expenditures pursuant to
Section 6.7(a) and 6.7(b)) made to acquire Qualified Tower Portfolios; provided
that, prior to the Initial Mortgage Requirement Satisfaction Date, the aggregate
amount of such Capital Expenditures shall not exceed an amount equal to (x)
$25,000,000 minus (y) the portion of the Applicable Amount (i) paid as dividends
by the Borrower to Holdings pursuant to Section 6.6(c)(iv) or (ii) used to make
Investments pursuant to Section 6.8(f), in each case, on or after the Closing
Date.

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                                                                              67

          6.8. Limitation on Investments. Make any advance, loan, extension of
credit (by way of guaranty or otherwise) or capital contribution to, or purchase
any Capital Stock, bonds, notes, debentures or other debt securities of, or any
assets constituting an ongoing business from, or make any other investment in,
any other Person (all of the foregoing, "Investments"), except:

          (a) extensions of trade credit in the ordinary course of business;

          (b) Investments in Cash Equivalents;

          (c) Investments arising in connection with the incurrence of
     Indebtedness permitted by Section 6.2(b) and (e);

          (d) loans and advances to employees of the Borrower or any
     Subsidiaries of the Borrower in the ordinary course of business (including,
     without limitation, for travel, entertainment and relocation expenses and
     excluding advances made to employees in the form of federal income tax
     withholding payments paid by the Borrower or any of its Subsidiaries) in an
     aggregate amount for the Borrower and Subsidiaries of the Borrower not to
     exceed $250,000 at any one time outstanding;

          (e) Investments (other than those relating to the incurrence of
     Indebtedness permitted by Section 6.8(c)) by the Borrower or any of its
     Subsidiaries in the Borrower or any Person that, prior to such investment,
     is a Subsidiary Guarantor; and

          (f) Investments by the Borrower or any of its Subsidiaries in
     Qualified Tower Portfolios (provided, that in each case, such Qualified
     Tower Portfolio becomes a Subsidiary Guarantor and the Mortgage Requirement
     is satisfied, as applicable); provided that, prior to the Initial Mortgage
     Requirement Satisfaction Date, the aggregate amount of such Investments
     shall not exceed an amount equal to (x) $25,000,000 minus (y) the portion
     of the Applicable Amount (i) paid as dividends by the Borrower to Holdings
     pursuant to Section 6.6(c)(iv) or (ii) used to make Capital Expenditures
     pursuant to Section 6.7(c), in each case, on or after the Closing Date.

          6.9. Limitation on Modifications of Certain Documents. (a) Amend its
certificate of incorporation in any manner determined by the Administrative
Agent to be adverse to the Lenders.

          (b) (i) Amend, supplement or otherwise modify (pursuant to a waiver or
otherwise) the terms and conditions of the indemnities and licenses furnished to
the Borrower or any of its Subsidiaries pursuant to the AAT Purchase Agreement
such that after giving effect thereto such indemnities or licenses shall be
materially less favorable to the interests of the Loan Parties or the Lenders
with respect thereto or (ii) otherwise amend, supplement or otherwise modify the
terms and conditions of the AAT Purchase Agreement or any such other documents
except for any such amendment, supplement or modification that could not
reasonably be expected to have a Material Adverse Effect.

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                                                                              68

          6.10. Limitation on Transactions with Affiliates. Enter into any
transaction, including, without limitation, any purchase, sale, lease or
exchange of Property, the rendering of any service or the payment of any
management, advisory or similar fees, with any Affiliate (other than the
Borrower or any Subsidiary Guarantor) unless such transaction is (a) otherwise
permitted under this Agreement, (b) in the ordinary course of business of the
Borrower or such Subsidiary, as the case may be, and (c) upon fair and
reasonable terms no less favorable to the Borrower or such Subsidiary, as the
case may be, than it would obtain in a comparable arm's length transaction with
a Person that is not an Affiliate.

          6.11. Limitation on Sales and Leasebacks. Enter into any arrangement
with any Person providing for the leasing by the Borrower or any Subsidiary of
real or personal property which has been or is to be sold or transferred by the
Borrower or such Subsidiary to such Person or to any other Person to whom funds
have been or are to be advanced by such Person on the security of such property
or rental obligations of the Borrower or such Subsidiary, except to the extent
permitted by Section 6.2(c) or Section 6.5(g) and the transaction relating to
Wildwood, Sumter County, Florida.

          6.12. Limitation on Negative Pledge Clauses. Enter into or suffer to
exist or become effective any agreement that prohibits or limits the ability of
the Borrower or any of its Subsidiaries to create, incur, assume or suffer to
exist any Lien upon any of its Property or revenues, whether now owned or
hereafter acquired, to secure the Obligations or, in the case of any guarantor,
its obligations under the Guarantee and Collateral Agreement, other than (a)
this Agreement and the other Loan Documents, (b) any agreements governing any
purchase money Liens or Capital Lease Obligations otherwise permitted hereby (in
which case, any prohibition or limitation shall only be effective against the
assets financed thereby) and (c) any provisions of the AAT Purchase Agreement or
related documents which prohibit the Seller Subsidiaries from creating,
incurring or suffering to exist any Lien upon any Towers, Tower sites or related
assets (including revenues) which are subject to the AAT Purchase Agreement.

          6.13. Limitation on Restrictions on Subsidiary Distributions. Enter
into or suffer to exist or become effective any consensual encumbrance or
restriction on the ability of any Subsidiary to (a) make Restricted Payments in
respect of any Capital Stock of such Subsidiary held by, or pay any Indebtedness
owed to, the Borrower or any other Subsidiary, (b) make Investments in the
Borrower or any other Subsidiary or (c) transfer any of its assets to the
Borrower or any other Subsidiary, except for such encumbrances or restrictions
existing under or by reason of (i) any restrictions existing under the Loan
Documents, (ii) any restrictions with respect to a Subsidiary imposed pursuant
to an agreement that has been entered into in connection with the Disposition of
all or substantially all of the Capital Stock or assets of such Subsidiary and
(iii) any restrictions with respect to a Seller Subsidiary imposed pursuant to
the AAT Purchase Agreement and any related agreements.

          6.14. Limitation on Lines of Business. Enter into any business, either
directly or through any Subsidiary, except for those businesses in which the
Borrower and its Subsidiaries are engaged on the date of this Agreement or that
are reasonably related thereto.

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                                                                              69

          6.15. Limitation on Hedge Agreements. Enter into any Hedge Agreement
other than Hedge Agreements entered into in the ordinary course of business, and
not for speculative purposes, to protect against changes in interest rates or
foreign exchange rates.

          6.16. Limitation on Changes in Fiscal Periods. Permit the fiscal year
of the Borrower to end on a day other than December 31.

          6.17. Mortgage Requirement. Fail to maintain at any time first
priority Mortgages sufficient to satisfy to the Mortgage Requirement following
the delivery of a certificate pursuant to Section 4.1(j) or 5.2(c), as
applicable.

          6.18. Limitation on Non-Qualified Towers. Own or lease at any one
time, more than 50 Towers which are non-Qualified Towers, other than any
non-Qualified Towers in existence on the Closing Date, provided that, solely for
the purpose of determining compliance with this Section 6.18, any Tower acquired
or built by the Borrower or any of its Subsidiaries shall be deemed to be a
"Qualified Tower" (a) for the three fiscal quarters following such date of
acquisition or completion of construction if, (i) with respect to acquired
Towers, on the date of acquisition such Tower had at least one tenant and
positive cash flow for the most recent full fiscal quarter of the seller ended
on or prior to such date of acquisition or (ii) with respect to built Towers, on
the date construction of such Tower is completed, such Tower had at least one
tenant and positive cash flow for each fiscal quarter ended after such date
construction is completed and (b) thereafter, if such Tower is a Qualified Tower
notwithstanding any subsequent failure to comply on a continuous basis with the
definition of "Qualified Tower."

                          Section 7. EVENTS OF DEFAULT

          If any of the following events shall occur and be continuing:

          (a) The Borrower shall fail to pay any principal of any Loan when due
     in accordance with the terms hereof; or the Borrower shall fail to pay any
     interest on any Loan, or any other amount payable hereunder or under any
     other Loan Document, within five days after any such interest or other
     amount becomes due in accordance with the terms hereof; or

          (b) Any representation or warranty made or deemed made by any Loan
     Party herein or in any other Loan Document or that is contained in any
     certificate, document or financial or other statement furnished by it at
     any time under or in connection with this Agreement or any such other Loan
     Document shall prove to have been inaccurate in any material respect on or
     as of the date made or deemed made; or

          (c) (i) Any Loan Party shall default in the observance or performance
     of any agreement contained in clause (i) or (ii) of Section 5.4(a) (with
     respect to the Borrower only), Section 5.7(a), Section 5.9, Section 5.10 or
     Section 6 of this Agreement or Section 5 of the Guarantee and Collateral
     Agreement or (ii) any Loan Party shall default in the observance or
     performance of any covenant or agreement contained in any Mortgage and such
     default, together with any other such default under any other Mortgage or
     Mortgages, shall have continued unremedied beyond any applicable notice

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                                                                              70

     and cure periods that may be provided for therein and the aggregate book
     value of the Mortgaged Property or Mortgaged Properties encumbered by such
     Mortgage or Mortgages exceeds $5,000,000; or

          (d) Any Loan Party shall default in the observance or performance of
     any other agreement contained in this Agreement or any other Loan Document
     (other than as provided in paragraphs (a) through (c) of this Section) and
     in each case, such default shall continue unremedied for a period of 30
     days; or

          (e) Holdings, the Borrower or any of its Subsidiaries shall (i)
     default in making any payment of any principal of any Indebtedness
     (including, without limitation, any Guarantee Obligation, but excluding the
     Loans) on the scheduled or original due date with respect thereto; or (ii)
     default in making any payment of any interest on any such Indebtedness
     beyond the period of grace, if any, provided in the instrument or agreement
     under which such Indebtedness was created; or (iii) default in the
     observance or performance of any other agreement or condition relating to
     any such Indebtedness or contained in any instrument or agreement
     evidencing, securing or relating thereto, or any other event shall occur or
     condition exist, the effect of which default or other event or condition is
     to cause, or to permit the holder or beneficiary of such Indebtedness (or a
     trustee or agent on behalf of such holder or beneficiary) to cause, with
     the giving of notice if required, such Indebtedness to become due prior to
     its stated maturity or (in the case of any such Indebtedness constituting a
     Guarantee Obligation) to become payable; provided, that a default, event or
     condition described in clause (i), (ii) or (iii) of this paragraph (e)
     shall not at any time constitute an Event of Default unless, at such time,
     one or more defaults, events or conditions of the type described in clauses
     (i), (ii) and (iii) of this paragraph (e) shall have occurred and be
     continuing with respect to Indebtedness the outstanding principal amount of
     which exceeds in the aggregate $1,000,000; or

          (f) (i) Holdings, the Borrower or any of its Subsidiaries shall
     commence any case, proceeding or other action (A) under any existing or
     future law of any jurisdiction, domestic or foreign, relating to
     bankruptcy, insolvency, reorganization or relief of debtors, seeking to
     have an order for relief entered with respect to it, or seeking to
     adjudicate it a bankrupt or insolvent, or seeking reorganization,
     arrangement, adjustment, winding-up, liquidation, dissolution, composition
     or other relief with respect to it or its debts, or (B) seeking appointment
     of a receiver, trustee, custodian, conservator or other similar official
     for it or for all or any substantial part of its assets, or Holdings, the
     Borrower or any of its Subsidiaries shall make a general assignment for the
     benefit of its creditors; or (ii) there shall be commenced against
     Holdings, the Borrower or any of its Subsidiaries any case, proceeding or
     other action of a nature referred to in clause (i) above that (A) results
     in the entry of an order for relief or any such adjudication or appointment
     or (B) remains undismissed, undischarged or unbonded for a period of 60
     days; or (iii) there shall be commenced against Holdings, the Borrower or
     any of its Subsidiaries any case, proceeding or other action seeking
     issuance of a warrant of attachment, execution, distraint or similar
     process against all or any substantial part of its assets that results in
     the entry of an order for any such relief that shall not have been vacated,
     discharged, or stayed or bonded pending appeal within 60 days from the
     entry thereof; or (iv) Holdings, the Borrower or any of its Subsidiaries
     shall take any action in

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                                                                              71

     furtherance of, or indicating its consent to, approval of, or acquiescence
     in, any of the acts set forth in clause (i), (ii), or (iii) above; or (v)
     Holdings, the Borrower or any of its Subsidiaries shall generally not, or
     shall be unable to, or shall admit in writing its inability to, pay its
     debts as they become due; or

          (g) Any Person shall engage in any "prohibited transaction" (as
     defined in Section 406 of ERISA or Section 4975 of the Code) involving any
     Plan, (ii) any "accumulated funding deficiency" (as defined in Section 302
     of ERISA), whether or not waived, shall exist with respect to any Plan or
     any Lien in favor of the PBGC or a Plan shall arise on the assets of the
     Borrower or any Commonly Controlled Entity, (iii) a Reportable Event shall
     occur with respect to, or proceedings shall commence to have a trustee
     appointed, or a trustee shall be appointed, to administer or to terminate,
     any Single Employer Plan, which Reportable Event or commencement of
     proceedings or appointment of a trustee is, in the reasonable opinion of
     the Required Lenders, likely to result in the termination of such Plan for
     purposes of Title IV of ERISA, (iv) any Single Employer Plan shall
     terminate for purposes of Title IV of ERISA, (v) the Borrower or any
     Commonly Controlled Entity shall, or in the reasonable opinion of the
     Required Lenders is likely to, incur any liability in connection with a
     withdrawal from, or the Insolvency or Reorganization of, a Multiemployer
     Plan or (vi) any other event or condition shall occur or exist with respect
     to a Plan; and in each case in clauses (i) through (vi) above, such event
     or condition, together with all other such events or conditions, if any,
     could, in the sole judgment of the Required Lenders, reasonably be expected
     to have a Material Adverse Effect; or

          (h) One or more judgments or decrees shall be entered against the
     Borrower or any of its Subsidiaries involving for the Borrower and its
     Subsidiaries taken as a whole a liability (not paid or fully covered by
     insurance as to which the relevant insurance company has acknowledged
     coverage) of $5,000,000 or more, and all such judgments or decrees shall
     not have been vacated, discharged, stayed or bonded pending appeal within
     30 days from the entry thereof; or

          (i) Any of the Security Documents shall cease, for any reason, to be
     in full force and effect, or any Loan Party or any Affiliate of any Loan
     Party shall so assert, or any Lien created by any of the Security Documents
     shall cease to be enforceable and of the same effect and priority purported
     to be created thereby; or

          (j) The guarantee contained in Section 2 of the Guarantee and
     Collateral Agreement shall cease, for any reason, to be in full force and
     effect or any Loan Party or any Affiliate of any Loan Party shall so
     assert; or

          (k) (i) Any "person" or "group" (as such terms are used in Sections
     13(d) and 14(d) of the Securities Exchange Act of 1934, as amended (the
     "Exchange Act")), other than Steven Bernstein, shall become, or obtain
     rights (whether by means or warrants, options or otherwise) to become, the
     "beneficial owner" (as defined in Rules 13(d)-3 and 13(d)-5 under the
     Exchange Act), directly or indirectly, of more than 20% of the economic or
     voting interests of outstanding common stock of Holdings; (ii) Holdings
     shall cease to own and control, of record and beneficially, directly, 100%
     of each class of

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                                                                              72

     outstanding Capital Stock of the Borrower free and clear of all Liens
     (except Liens created by the Guarantee and Collateral Agreement); or (iii)
     a "Change of Control" as defined in the Master Lease Agreement, dated as of
     October 30, 1998, by and among SBA Towers, Inc., SBA Sites, Inc. and
     BellSouth Personal Communications, Inc. shall occur or be reasonably likely
     to occur; or

          (l) Holdings and its consolidated subsidiaries incur a federal tax
     liability resulting from the cancellation of Holdings' Indebtedness;

then, and in any such event, (A) if such event is an Event of Default specified
in clause (i) or (ii) of paragraph (f) above with respect to the Borrower,
automatically the Commitments shall immediately terminate and the Loans
hereunder (with accrued interest thereon) and all other amounts owing under this
Agreement and the other Loan Documents shall immediately become due and payable,
(B) if such event is an Event of Default specified in paragraph (l) above, the
Required Initial Lenders may by notice to the to the Borrower take either or
both of the following actions: (i) declare the Revolving Credit Commitments to
be terminated forthwith, whereupon the Revolving Credit Commitments shall
immediately terminate and (ii) declare the Loans hereunder (with accrued
interest thereon) and all other amounts owning under this Agreement and the
other Loan Documents to be due and payable forthwith, whereupon the same shall
immediately become due and payable and (C) if such event is any other Event of
Default, either or both of the following actions may be taken: (i) with the
consent of the Majority Facility Lenders with respect to the Revolving Credit
Facility, the Administrative Agent may, or upon the request of the Majority
Facility Lenders with respect to the Revolving Credit Facility, the
Administrative Agent shall, by notice to the Borrower declare the Revolving
Credit Commitments to be terminated forthwith, whereupon the Revolving Credit
Commitments shall immediately terminate; and (ii) with the consent of the
Required Lenders, the Administrative Agent may, or upon the request of the
Required Lenders, the Administrative Agent shall, by notice to the Borrower,
declare the Loans hereunder (with accrued interest thereon) and all other
amounts owing under this Agreement and the other Loan Documents to be due and
payable forthwith, whereupon the same shall immediately become due and payable.

                       Section 8. THE ADMINISTRATIVE AGENT

          8.1. Appointment. Each Lender hereby irrevocably designates and
appoints the Administrative Agent as the agent of such Lender under this
Agreement and the other Loan Documents, and each such Lender irrevocably
authorizes the Administrative Agent, in such capacity, to take such action on
its behalf under the provisions of this Agreement and the other Loan Documents
and to exercise such powers and perform such duties as are expressly delegated
to the Administrative Agent by the terms of this Agreement and the other Loan
Documents, together with such other powers as are reasonably incidental thereto.
Notwithstanding any provision to the contrary elsewhere in this Agreement, the
Administrative Agent shall not have any duties or responsibilities, except those
expressly set forth herein, or any fiduciary relationship with any Lender, and
no implied covenants, functions, responsibilities, duties, obligations or
liabilities shall be read into this Agreement or any other Loan Document or
otherwise exist against the Administrative Agent.

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                                                                              73

          8.2. Delegation of Duties. The Administrative Agent may execute any of
its duties under this Agreement and the other Loan Documents by or through
agents, attorneys-in-fact or service providers and shall be entitled to advice
of counsel concerning all matters pertaining to such duties. The Administrative
Agent shall not be responsible for the negligence or misconduct of any agents or
attorneys in-fact service providers selected by it with reasonable care.

          8.3. Exculpatory Provisions. Neither the Administrative Agent nor any
of its officers, directors, employees, agents, attorneys-in-fact, service
providers or affiliates shall be (i) liable for any action lawfully taken or
omitted to be taken by it or such Person under or in connection with this
Agreement or any other Loan Document (except to the extent that any of the
foregoing are found by a final and nonappealable decision of a court of
competent jurisdiction to have resulted from its or such Person's own gross
negligence or willful misconduct) or (ii) responsible in any manner to any of
the Lenders for any recitals, statements, representations or warranties made by
any Loan Party or any officer thereof contained in this Agreement or any other
Loan Document or in any certificate, report, statement or other document
referred to or provided for in, or received by the Administrative Agent under or
in connection with, this Agreement or any other Loan Document or for the value,
validity, effectiveness, genuineness, enforceability or sufficiency of this
Agreement or any other Loan Document or for any failure of any Loan Party a
party thereto to perform its obligations hereunder or thereunder. The
Administrative Agent shall not be under any obligation to any Lender to
ascertain or to inquire as to the observance or performance of any of the
agreements contained in, or conditions of, this Agreement or any other Loan
Document, or to inspect the properties, books or records of any Loan Party.

          8.4. Reliance by the Administrative Agent. The Administrative Agent
shall be entitled to rely, and shall be fully protected in relying, upon any
instrument, writing, resolution, notice, consent, certificate, affidavit,
letter, telecopy, telex or teletype message, statement, order or other document
or conversation believed by it to be genuine and correct and to have been
signed, sent or made by the proper Person or Persons and upon advice and
statements of legal counsel (including, without limitation, counsel to the Loan
Parties), independent accountants and other experts selected by the
Administrative Agent. The Administrative Agent may deem and treat the payee of
any Note as the owner thereof for all purposes unless a written notice of
assignment, negotiation or transfer thereof shall have been filed with the
Administrative Agent. The Administrative Agent shall be fully justified in
failing or refusing to take any action under this Agreement or any other Loan
Document unless it shall first receive such advice or concurrence of the
Required Lenders (or, if so specified by this Agreement, all Lenders) as it
deems appropriate or it shall first be indemnified to its satisfaction by the
Lenders against any and all liability and expense that may be incurred by it by
reason of taking or continuing to take any such action. The Administrative Agent
shall in all cases be fully protected in acting, or in refraining from acting,
under this Agreement and the other Loan Documents in accordance with a request
of the Required Lenders (or, if so specified by this Agreement, all Lenders),
and such request and any action taken or failure to act pursuant thereto shall
be binding upon all the Lenders and all future holders of the Loans.

          8.5. Notice of Default. The Administrative Agent shall not be deemed
to have knowledge or notice of the occurrence of any Default or Event of Default
hereunder unless the

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                                                                              74

Administrative Agent has received notice from a Lender or the Borrower referring
to this Agreement, describing such Default or Event of Default and stating that
such notice is a "notice of default." In the event that the Administrative Agent
receives such a notice, the Administrative Agent shall give notice thereof to
the Lenders. The Administrative Agent shall take such action with respect to
such Default or Event of Default as shall be reasonably directed by the Required
Lenders (or, if so specified by this Agreement, all Lenders); provided that
unless and until the Administrative Agent shall have received such directions,
the Administrative Agent may (but shall not be obligated to) take such action,
or refrain from taking such action, with respect to such Default or Event of
Default as it shall deem advisable in the best interests of the Lenders.

          8.6. Non-Reliance on the Administrative Agent and Other Lenders. Each
Lender expressly acknowledges that neither the Administrative Agent nor any of
its officers, directors, employees, agents, attorneys-in-fact or affiliates have
made any representations or warranties to it and that no act by any Agent
hereinafter taken, including any review of the affairs of a Loan Party or any
affiliate of a Loan Party, shall be deemed to constitute any representation or
warranty by the Administrative Agent to any Lender. Each Lender represents to
the Administrative Agent that it has, independently and without reliance upon
the Administrative Agent or any other Lender, and based on such documents and
information as it has deemed appropriate, made its own appraisal of and
investigation into the business, operations, property, financial and other
condition and creditworthiness of the Loan Parties and their affiliates and made
its own decision to make its Loans hereunder and enter into this Agreement. Each
Lender also represents that it will, independently and without reliance upon the
Administrative Agent or any other Lender, and based on such documents and
information as it shall deem appropriate at the time, continue to make its own
credit analysis, appraisals and decisions in taking or not taking action under
this Agreement and the other Loan Documents, and to make such investigation as
it deems necessary to inform itself as to the business, operations, property,
financial and other condition and creditworthiness of the Loan Parties and their
affiliates. Except for notices, reports and other documents expressly required
to be furnished to the Lenders by the Administrative Agent hereunder, the
Administrative Agent shall not have any duty or responsibility to provide any
Lender with any credit or other information concerning the business, operations,
property, condition (financial or otherwise), prospects or creditworthiness of
any Loan Party or any affiliate of a Loan Party that may come into the
possession of the Administrative Agent or any of its officers, directors,
employees, agents, attorneys-in-fact or affiliates.

          8.7. Indemnification. The Lenders agree to indemnify the
Administrative Agent in its capacity as such (to the extent not reimbursed by
the Borrower and without limiting the obligation of the Borrower to do so),
ratably according to their respective Aggregate Exposure Percentages in effect
on the date on which indemnification is sought under this Section (or, if
indemnification is sought after the date upon which the Commitments shall have
terminated and the Loans shall have been paid in full, ratably in accordance
with such Aggregate Exposure Percentages immediately prior to such date), from
and against any and all liabilities, obligations, losses, damages, penalties,
actions, judgments, suits, costs, expenses or disbursements of any kind
whatsoever that may at any time (including, without limitation, at any time
following the payment of the Loans) be imposed on, incurred by or asserted
against the Administrative Agent in any way relating to or arising out of, the
Commitments, this Agreement,

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                                                                              75

any of the other Loan Documents or any documents contemplated by or referred to
herein or therein or the transactions contemplated hereby or thereby or any
action taken or omitted by the Administrative Agent under or in connection with
any of the foregoing; provided that no Lender shall be liable for the payment of
any portion of such liabilities, obligations, losses, damages, penalties,
actions, judgments, suits, costs, expenses or disbursements that are found by a
final and nonappealable decision of a court of competent jurisdiction to have
resulted from the Administrative Agent's gross negligence or willful misconduct.
The agreements in this Section 8.7 shall survive the payment of the Loans and
all other amounts payable hereunder.

          8.8. The Administrative Agent in Its Individual Capacity. The
Administrative Agent and its affiliates may make loans to, accept deposits from
and generally engage in any kind of business with any Loan Party as though the
Administrative Agent was not an agent. With respect to its Loans made or renewed
by it, the Administrative Agent shall have the same rights and powers under this
Agreement and the other Loan Documents as any Lender and may exercise the same
as though it were not an agent, and the terms "Lender" and "Lenders" shall
include the Administrative Agent in its individual capacity.

          8.9. Successor Agent. The Administrative Agent may resign as
Administrative Agent upon ten days' notice to the Lenders and the Borrower. If
the Administrative Agent shall resign as Administrative Agent under this
Agreement and the other Loan Documents, then the Required Lenders shall appoint
from among the Lenders a successor agent for the Lenders, which successor agent
shall (unless an Event of Default under Section 7(a) or Section 7(f) with
respect to the Borrower shall have occurred and be continuing) be subject to
approval by the Borrower (which approval shall not be unreasonably withheld or
delayed), whereupon such successor agent shall succeed to the rights, powers and
duties of the Administrative Agent, and the term "Administrative Agent" shall
mean such successor agent effective upon such appointment and approval, and the
former Administrative Agent's rights, powers and duties as Administrative Agent
shall be terminated, without any other or further act or deed on the part of
such former Administrative Agent or any of the parties to this Agreement or any
holders of the Loans. If no successor agent has accepted appointment as
Administrative Agent by the date that is ten days following a retiring
Administrative Agent's notice of resignation, the retiring Administrative
Agent's resignation shall nevertheless thereupon become effective, and the
Lenders shall assume and perform all of the duties of the Administrative Agent
hereunder until such time, if any, as the Required Lenders appoint a successor
agent as provided for above. After any retiring Administrative Agent's
resignation as agent, the provisions of this Section 8 shall inure to its
benefit as to any actions taken or omitted to be taken by it while it was
Administrative Agent under this Agreement and the other Loan Documents.

          8.10. Authorization to Release Liens. The Administrative Agent is
hereby irrevocably authorized by each of the Lenders to release any Lien
covering any Property of the Borrower or any of its Subsidiaries that is the
subject of a Disposition which is permitted by this Agreement or which has been
consented to in accordance with Section 9.1.

          8.11. The Arranger. The Arranger, in its capacity as such, shall have
no duties or responsibilities, and shall incur no liability, under this
Agreement and the other Loan Documents.

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                                                                              76

                            Section 9. MISCELLANEOUS

          9.1. Amendments and Waivers. Neither this Agreement or any other Loan
Document, nor any terms hereof or thereof may be amended, supplemented or
modified except in accordance with the provisions of this Section 9.1. The
Required Lenders and each Loan Party party to the relevant Loan Document may, or
(with the written consent of the Required Lenders) the Administrative Agent and
each Loan Party party to the relevant Loan Document may, from time to time, (a)
enter into written amendments, supplements or modifications hereto and to the
other Loan Documents (including amendments and restatements hereof or thereof)
for the purpose of adding any provisions to this Agreement or the other Loan
Documents or changing in any manner the rights of the Lenders or of the Loan
Parties hereunder or thereunder or (b) waive, on such terms and conditions as
may be specified in the instrument of waiver, any of the requirements of this
Agreement or the other Loan Documents or any Default or Event of Default and its
consequences; provided, however, that no such waiver and no such amendment,
supplement or modification shall (i) forgive the principal amount or extend the
final Conversion Date of any Revolving Credit Loan (except as provided in
Section 2.22(b)), extend the scheduled date of any amortization payment in
respect of any Term Loan, reduce the stated rate of any interest or fee payable
hereunder or extend the scheduled date of any payment thereof, or increase the
amount or extend the expiration date of any Commitment of any Lender, in each
case without the consent of each Lender directly affected thereby; (ii) amend,
modify or supplement Section 6.2 to permit the Borrower or any of its
Subsidiaries to incur Indebtedness on a pari passu or senior basis with the
Facilities without the consent of Lenders holding at least 75% of the Aggregate
Facility Amount; (iii) amend, modify or waive any provision of this Section or
reduce any percentage specified in the definition of Required Lenders, consent
to the assignment or transfer by the Borrower of any of its rights and
obligations under this Agreement and the other Loan Documents, release all or
substantially all of the Collateral or release all or substantially all of the
Subsidiary Guarantors from their guarantee obligations under the Guarantee and
Collateral Agreement, in each case without the consent of all Lenders; (iv)
reduce the percentage specified in the definition of Majority Facility Lenders
with respect to any Facility without the consent of all Lenders under such
Facility; (v) amend, modify or waive any provision of Section 2.16 without the
consent of each Lender directly affected thereby; or (vi) amend, modify or waive
any provision of Section 8 without the consent of the Administrative Agent and,
provided further, that (x) Disqualified Lenders shall not be permitted to
participate in any consent to a waiver, amendment, supplement or modification to
provisions of this Agreement or any other Loan Document and (y) the aggregate
unpaid principal amount of the Term Loans then outstanding of such Disqualified
Lenders and the Total Revolving Credit Commitments then in effect or, if the
Revolving Credit Commitments have been terminated, the Total Revolving
Extensions of Credit then outstanding of such Disqualified Lenders shall not be
included in the determination of Lenders required to approve any such waiver,
amendment, supplement or modification. Any such waiver and any such amendment,
supplement or modification shall apply equally to each of the Lenders and shall
be binding upon the Loan Parties, the Lenders, the Administrative Agent and all
future holders of the Loans. In the case of any waiver, the Loan Parties, the
Lenders and the Administrative Agent shall be restored to their former position
and rights hereunder and under the other Loan Documents, and any Default or
Event of Default waived shall be deemed to be cured and not continuing; but no
such waiver shall extend to any subsequent or other Default or Event of Default,
or impair any right

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                                                                              77

consequent thereon. Any such waiver, amendment, supplement or modification shall
be effected by a written instrument signed by the parties required to sign
pursuant to the foregoing provisions of this Section; provided, that delivery of
an executed signature page of any such instrument by facsimile transmission
shall be effective as delivery of a manually executed counterpart thereof.

          9.2. Notices. All notices, requests and demands to or upon the
respective parties hereto to be effective shall be in writing (including by
telecopy), and, unless otherwise expressly provided herein, shall be deemed to
have been duly given or made when delivered, or three Business Days after being
deposited in the mail, postage prepaid, or, in the case of telecopy notice, when
received, addressed as follows in the case of the Borrower and the
Administrative Agent, and as set forth in an administrative questionnaire
delivered to the Administrative Agent in the case of the Lenders, or to such
other address as may be hereafter notified by the respective parties hereto:

       The Borrower:                     SBA Telecommunications, Inc.
                                         5900 Broken Sound Parkway NW
                                         Boca Raton, Florida 33487
                                         Attention: Jeffrey A. Stoops
                                         Telecopy: (561) 997-0343
                                         Telephone: (561) 995-7670

       The Administrative Agent:         General Electric Capital Corporation
                                         c/o GE Structured Finance, Inc.
                                         60 Wall Street
                                         Mail Stop NYC 60-1701
                                         New York, NY 10005
                                         Attention: Mabel Chui
                                         Telecopy: 212-797-0406
                                         Telephone: 212-602-1113
                                         Email: mabel.chui@db.com

       with a copy to:                   General Electric Capital Corporation
                                         c/o GE Structured Finance, Inc.
                                         120 Long Ridge Road
                                         Mail Stop 3C-94
                                         Stamford, CT 06927
                                         Attention: Chip Toth
                                         Telecopy: 203-602-9450
                                         Telephone: 203-961-2742
                                         Email: chip.toth@ge.com

provided that any notice, request or demand to or upon the Administrative Agent
or any Lender shall not be effective until received.

          9.3. No Waiver; Cumulative Remedies. No failure to exercise and no
delay in exercising, on the part of the Administrative Agent or any Lender, any
right, remedy, power or

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                                                                              78

privilege hereunder or under the other Loan Documents shall operate as a waiver
thereof; nor shall any single or partial exercise of any right, remedy, power or
privilege hereunder preclude any other or further exercise thereof or the
exercise of any other right, remedy, power or privilege. The rights, remedies,
powers and privileges herein provided are cumulative and not exclusive of any
rights, remedies, powers and privileges provided by law.

          9.4. Survival of Representations and Warranties. All representations
and warranties made hereunder, in the other Loan Documents and in any document,
certificate or statement delivered pursuant hereto or in connection herewith
shall survive the execution and delivery of this Agreement and the making of the
Loans and other extensions of credit hereunder.

          9.5. Payment of Expenses. The Borrower agrees (a) to pay or reimburse
the Administrative Agent and the Arranger for all their reasonable out-of-pocket
costs and expenses incurred in connection with the syndication of the Facilities
(other than fees payable to syndicate members) and the development, preparation
and execution of, and any amendment, supplement or modification to, this
Agreement and the other Loan Documents and any other documents prepared in
connection herewith or therewith, and the consummation and administration of the
transactions contemplated hereby and thereby, including, without limitation, the
reasonable fees and disbursements and other charges of counsel to the
Administrative Agent (including expenses incurred by such counsel in connection
with a review and confirmation of the Mortgage Requirement) and the charges of
Intralinks, (b) to pay or reimburse each Lender and the Administrative Agent for
all its costs and expenses incurred in connection with the enforcement or
preservation of any rights under this Agreement, the other Loan Documents and
any such other documents, including, without limitation, the fees and
disbursements of counsel (including the allocated fees and disbursements and
other charges of in-house counsel) to each Lender and of counsel to the
Administrative Agent, (c) to pay, indemnify, and hold each Lender and the
Administrative Agent harmless from, any and all recording and filing fees and
any and all liabilities with respect to, or resulting from any delay in paying,
stamp, excise and other taxes, if any, which may be payable or determined to be
payable in connection with the execution and delivery of, or consummation or
administration of any of the transactions contemplated by, or any amendment,
supplement or modification of, or any waiver or consent under or in respect of,
this Agreement, the other Loan Documents and any such other documents, and (d)
to pay, indemnify, and hold each Lender, the Administrative Agent, their
respective affiliates, and their respective officers, directors, trustees,
employees, advisors, agents and controlling persons (each, an "Indemnitee")
harmless from and against any and all other liabilities, obligations, losses,
damages, penalties, actions, judgments, suits, costs, expenses or disbursements
of any kind or nature whatsoever with respect to the execution, delivery,
enforcement, performance and administration of this Agreement, the other Loan
Documents and any such other documents, including, without limitation, any of
the foregoing relating to the use of proceeds of the Loans or the violation of,
noncompliance with or liability under, any Environmental Law applicable to the
operations of the Borrower, any of its Subsidiaries or any property at any time
owned, leased, or in any way used by the Borrower, any Subsidiary or any other
entity for which the Borrower or any of its Subsidiaries is alleged to be
responsible, and the fees and disbursements and other charges of legal counsel
in connection with claims, actions or proceedings by any Indemnitee against the
Borrower hereunder (all the foregoing in this clause (d), collectively, the
"Indemnified Liabilities"), provided, that the Borrower shall have no obligation
hereunder to any

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                                                                              79

Indemnitee with respect to Indemnified Liabilities to the extent such
Indemnified Liabilities are found by a final and nonappealable decision of a
court of competent jurisdiction to have resulted from the gross negligence or
willful misconduct of such Indemnitee. Without limiting the foregoing, and to
the extent permitted by applicable law, the Borrower agrees not to assert and to
cause its Subsidiaries not to assert, and hereby waives and agrees to cause its
Subsidiaries so to waive, all rights for contribution or any other rights of
recovery with respect to all claims, demands, penalties, fines, liabilities,
settlements, damages, costs and expenses of whatever kind or nature, under or
related to Environmental Laws, that any of them might have by statute or
otherwise against any indemnitee. All amounts due under this Section shall be
payable not later than 30 days after written demand therefor. Statements payable
by the Borrower pursuant to this Section shall be submitted to Pam Kline
(Telephone No. (561) 995-7670) (Fax No. (561) 989-2940), at the address of the
Borrower set forth in Section 9.2, or to such other Person or address as may be
hereafter designated by the Borrower in a written notice to the Administrative
Agent. The agreements in this Section shall survive repayment of the Loans and
all other amounts payable hereunder.

          9.6. Successors and Assigns; Participations and Assignments. (a) This
Agreement shall be binding upon and inure to the benefit of the Borrower, the
Lenders, the Administrative Agent, all future holders of the Loans and their
respective successors and assigns, except that the Borrower may not assign or
transfer any of its rights or obligations under this Agreement without the prior
written consent of the Administrative Agent and each Lender.

          (b) Any Lender may, without the consent of the Borrower, in accordance
with applicable law, at any time sell to one or more banks, financial
institutions or other entities (other than any Disqualified Entity) (each, a
"Participant") participating interests in any Loan owing to such Lender, any
Commitment of such Lender or any other interest of such Lender hereunder and
under the other Loan Documents. In the event of any such sale by a Lender of a
participating interest to a Participant, such Lender's obligations under this
Agreement to the other parties to this Agreement shall remain unchanged, such
Lender shall remain solely responsible for the performance thereof, such Lender
shall remain the holder of any such Loan for all purposes under this Agreement
and the other Loan Documents, and the Borrower and the Administrative Agent
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. In no event shall any Participant under any such participation have
any right to approve any amendment or waiver of any provision of any Loan
Document, or any consent to any departure by any Loan Party therefrom, except to
the extent that such amendment, waiver or consent would reduce the principal of,
or interest on, the Loans or any fees payable hereunder, release all or
substantially all of the Collateral or the Subsidiary Guarantors from their
obligations under the Guarantee and Collateral Agreement, or postpone the date
of the final maturity of the Loans, in each case to the extent subject to such
participation. The Borrower agrees that if amounts outstanding under this
Agreement and the Loans are due or unpaid, or shall have been declared or shall
have become due and payable upon the occurrence of an Event of Default, each
Participant shall, to the maximum extent permitted by applicable law, be deemed
to have the right of setoff 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

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                                                                              80

shall be deemed to have agreed to share with the Lenders the proceeds thereof as
provided in Section 9.7(a) as fully as if it were a Lender hereunder. The
Borrower also agrees that each Participant shall be entitled to the benefits of
Sections 2.17, 2.18 and 2.19 with respect to its participation in the
Commitments and the Loans outstanding from time to time as if it was a Lender;
provided that, in the case of Section 2.18, such Participant shall have complied
with the requirements of said 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 (an "Assignor") may, in accordance with applicable law
and upon written notice to the Administrative Agent, at any time and from time
to time assign with, the consent of the Administrative Agent and, in case of an
assignment to any Disqualified Party, the consent of the Borrower, to a bank,
financial institution or other entity (an "Assignee") all or any part of its
rights and obligations under this Agreement pursuant to an Assignment and
Acceptance, substantially in the form of Exhibit D, executed by such Assignee
and such Assignor (and, where the consent of the Borrower or the Administrative
Agent is required pursuant to the foregoing provisions, by the Borrower and the
Administrative Agent) and delivered to the Administrative Agent for its
acceptance and recording in the Register; provided that no such assignment to an
Assignee (other than any Lender, Related Fund or any affiliate thereof) shall be
in an aggregate principal amount of less than $2,000,000, with respect to the
Revolving Credit Facility, and $1,000,000, with respect to the Term Loan
Facility (other than in the case of an assignment of all of a Lender's interests
under this Agreement), unless otherwise agreed by the Borrower and the
Administrative Agent; provided further that, after giving effect to such
assignment, the aggregate principal amount of such Assignor's Commitment shall
be at least $2,000,000, with respect to the Revolving Credit Facility, and
$1,000,000, with respect to the Term Loan Facility (other than in the case of an
assignment to a Related Fund or of all of a Lender's interests under this
Agreement), unless otherwise agreed by the Borrower and the Administrative
Agent. Any such assignment need not be ratable as among the Facilities. Upon
such execution, delivery, acceptance and recording, from and after the effective
date determined pursuant to such Assignment and Acceptance, (x) the Assignee
thereunder shall be a party hereto and, to the extent provided in such
Assignment and Acceptance, have the rights and obligations of a Lender hereunder
with a Commitment and/or Loans as set forth therein, and (y) the Assignor
thereunder shall, to the extent provided in such Assignment and Acceptance, be
released from its obligations under this Agreement (and, in the case of an
Assignment and Acceptance covering all of an Assignor's rights and obligations
under this Agreement, such Assignor shall cease to be a party hereto).
Notwithstanding any provision of this Section, the consent of the Borrower shall
not be required for any assignment that occurs at any time when any Event of
Default shall have occurred and be continuing.

          (d) The Administrative Agent shall, on behalf of the Borrower,
maintain at its address referred to in Section 9.2 a copy of each Assignment and
Acceptance delivered to it and a register (the "Register") for the recordation
of the names and addresses of the Lenders and the Commitment of, and principal
amount of the Loans owing to, each Lender from time to time. The entries in the
Register shall be conclusive, in the absence of manifest error, and the
Borrower, the Administrative Agent and the Lenders shall treat each Person whose
name is

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                                                                              81

recorded in the Register as the owner of the Loans and any Notes evidencing such
Loans recorded therein for all purposes of this Agreement. Any assignment of any
Loan, whether or not evidenced by a Note, shall be effective only upon
appropriate entries with respect thereto being made in the Register (and each
Note shall expressly so provide). 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 Acceptance; thereupon one or more
new Notes in the same aggregate principal amount shall be issued to the
designated Assignee, and the old Notes shall be returned by the Administrative
Agent to the Borrower marked "canceled." The Register shall be available for
inspection by the Borrower or any Lender or Agent at any reasonable time and
from time to time upon reasonable prior notice.

          (e) Upon its receipt of an Assignment and Acceptance executed by an
Assignor and an Assignee (and, in any case where the consent of any other Person
is required by Section 9.6(c), by each such other Person) together with payment
to the Administrative Agent of a registration and processing fee of $3,500
(except that no such registration and processing fee shall be payable (y) in
connection with an assignment by or to General Electric Capital Corporation or
any of its Affiliates or (z) in the case of an Assignee which is already a
Lender or is an affiliate of a Lender or a Person under common management with a
Lender), the Administrative Agent shall (i) promptly accept such Assignment and
Acceptance and (ii) on the effective date determined pursuant thereto record the
information contained therein in the Register and give notice of such acceptance
and recordation to the Lenders, the Administrative Agent and the Borrower. On or
prior to such effective date, the Borrower, at its own expense, upon request,
shall execute and deliver to the Administrative Agent (in exchange for the
applicable Note or Notes of the assigning Lender) a new applicable Note or Notes
to the order of such Assignee in an amount equal to the Revolving Credit
Commitment and/or applicable Term Loan, as the case may be, assumed or acquired
by it pursuant to such Assignment and Acceptance and, if the Assignor has
retained a Revolving Credit Commitment and/or Term Loan, as the case may be,
upon request, a new applicable Note or Notes, to the order of the Assignor in an
amount equal to the Revolving Credit Commitment and/or applicable Term Loan, as
the case may be, retained by it hereunder. Such new Note or Notes shall be dated
the Closing Date and shall otherwise be in the form of the Note or Notes
replaced thereby.

          (f) For avoidance of doubt, the parties to this Agreement acknowledge
that the provisions of this Section concerning assignments of Loans and Notes
relate only to absolute assignments and that such provisions do not prohibit
assignments creating security interests, including, without limitation, any
pledge or assignment by a Lender of any Loan or Note to any Federal Reserve Bank
in accordance with applicable law.

          9.7. Adjustments; Set-off. Except to the extent that this Agreement
provides for payments to be allocated to a particular Lender or to the Lenders
under a particular Facility, if any Lender (a "Benefitted Lender") shall at any
time receive any payment of all or part of the Obligations owing to it, or
receive any collateral in respect thereof (whether voluntarily or involuntarily,
by set-off, pursuant to events or proceedings of the nature referred to in
Section 7(f), or otherwise), in a greater proportion than any such payment to or
collateral received by any other Lender, if any, in respect of such other
Lender's Obligations, such Benefitted Lender shall purchase for cash from the
other Lenders a participating interest in such

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                                                                              82

portion of each such other Lender's Obligations, or shall provide such other
Lenders with the benefits of any such collateral, as shall be necessary to cause
such Benefitted Lender to share the excess payment or benefits of such
collateral ratably with each of the Lenders; provided, however, that if all or
any portion of such excess payment or benefits is thereafter recovered from such
Benefitted Lender, such purchase shall be rescinded, and the purchase price and
benefits returned, to the extent of such recovery, but without interest.

          (b) In addition to any rights and remedies of the Lenders provided by
law, each Lender shall have the right, without prior notice to the Borrower, any
such notice being expressly waived by the Borrower to the extent permitted by
applicable law, upon any amount becoming due and payable by the Borrower
hereunder (whether at the stated maturity, by acceleration or otherwise), to set
off and appropriate and apply against such amount any and all deposits (general
or special, time or demand, provisional or final), in any currency, and any
other credits, indebtedness or claims, in any currency, in each case whether
direct or indirect, absolute or contingent, matured or unmatured, at any time
held or owing by such Lender or any branch or agency thereof to or for the
credit or the account of the Borrower. Each Lender agrees promptly to notify the
Borrower and the Administrative Agent after any such setoff and application made
by such Lender, provided that the failure to give such notice shall not affect
the validity of such setoff and application.

          9.8. Counterparts. This Agreement may be executed by one or more of
the parties to this Agreement on any number of separate counterparts, and all of
said counterparts taken together shall be deemed to constitute one and the same
instrument. Delivery of an executed signature page of this Agreement by
facsimile transmission shall be effective as delivery of a manually executed
counterpart hereof. A set of the copies of this Agreement signed by all the
parties shall be lodged with the Borrower and the Administrative Agent.

          9.9. Severability. Any provision of this Agreement that is prohibited
or unenforceable in any jurisdiction shall, as to such jurisdiction, be
ineffective to the extent of such prohibition or unenforceability without
invalidating the remaining provisions hereof, and any such prohibition or
unenforceability in any jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction.

          9.10. Integration. This Agreement and the other Loan Documents
represent the agreement of the Borrower, the Administrative Agent, the Arranger
and the Lenders with respect to the subject matter hereof, and there are no
promises, undertakings, representations or warranties by the Arranger, the
Administrative Agent or any Lender relative to subject matter hereof not
expressly set forth or referred to herein or in the other Loan Documents.

          9.11. GOVERNING LAW. THIS AGREEMENT AND THE RIGHTS AND OBLIGATIONS OF
THE PARTIES UNDER THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED AND
INTERPRETED IN ACCORDANCE WITH, THE LAW OF THE STATE OF NEW YORK.

          9.12. Submission To Jurisdiction; Waivers. The Borrower hereby
irrevocably and unconditionally:

<PAGE>

                                                                              83

          (a) submits for itself and its Property in any legal action or
     proceeding relating to this Agreement and the other Loan Documents to which
     it is a party, or for recognition and enforcement of any judgment in
     respect thereof, to the non-exclusive general jurisdiction of the courts of
     the State of New York, the courts of the United States of America for the
     Southern District of New York, and appellate courts from any thereof;

          (b) consents that any such action or proceeding may be brought in such
     courts and waives any objection that it may now or hereafter have to the
     venue of any such action or proceeding in any such court or that such
     action or proceeding was brought in an inconvenient court and agrees not to
     plead or claim the same;

          (c) agrees that service of process in any such action or proceeding
     may be effected by mailing a copy thereof by registered or certified mail
     (or any substantially similar form of mail), postage prepaid, to the
     Borrower at its address set forth in Section 9.2 or at such other address
     of which the Administrative Agent shall have been notified pursuant
     thereto;

          (d) agrees that nothing herein shall affect the right to effect
     service of process in any other manner permitted by law or shall limit the
     right to sue in any other jurisdiction; and

          (e) waives, to the maximum extent not prohibited by law, any right it
     may have to claim or recover in any legal action or proceeding referred to
     in this Section any special, exemplary, punitive or consequential damages.

          9.13. Acknowledgments. The Borrower hereby acknowledges that:

          (a) it has been advised by counsel in the negotiation, execution and
     delivery of this Agreement and the other Loan Documents;

          (b) neither the Arranger, the Administrative Agent nor any Lender has
     any fiduciary relationship with or duty to the Borrower arising out of or
     in connection with this Agreement or any of the other Loan Documents, and
     the relationship between the Arranger, the Administrative Agent and
     Lenders, on one hand, and the Borrower, on the other hand, in connection
     herewith or therewith is solely that of debtor and creditor; and

          (c) no joint venture is created hereby or by the other Loan Documents
     or otherwise exists by virtue of the transactions contemplated hereby among
     the Arranger, the Administrative Agent and the Lenders or among the
     Borrower and the Lenders.

          9.14. Confidentiality; Public Disclosure. (a) Each of the
Administrative Agent and the Lenders expressly agrees to keep confidential all
non-public information provided to it by any Loan Party pursuant to this
Agreement that is designated by such Loan Party as confidential; provided that
nothing herein shall prevent the Administrative Agent or any Lender from
disclosing any such information (i) to the Arranger, the Administrative Agent,
any other Lender or any affiliate of any thereof, (ii) to any Participant or
Assignee (each, a "Transferee") or prospective Transferee that agrees to comply
with the provisions of this Section, (iii) any of its

<PAGE>

                                                                              84

employees, directors, agents, attorneys, accountants and other professional
advisors or service providers in connection with the administration and
management of any Loan Document, (iv) upon the request or demand of any
Governmental Authority having jurisdiction over it, (v) in response to any order
of any court or other Governmental Authority or as may otherwise be required
pursuant to any Requirement of Law, (vi) if requested or required to do so in
connection with any litigation or similar proceeding, (vii) that has been
publicly disclosed other than in breach of this Section, (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) in connection with the exercise of any remedy hereunder or
under any other Loan Document. Notwithstanding anything herein to the contrary,
any party subject to confidentiality obligations hereunder or under any other
related document (and any employee, representative or other agent of such party)
may disclose to any and all persons, without limitation of any kind, such
party's U.S. federal income tax treatment and the U.S. federal income tax
structure of the transactions contemplated by this Agreement relating to such
party and all materials of any kind (including opinions or other tax analyses)
that are provided to it relating to such tax treatment and tax structure.
However, no such party shall disclose any information relating to such tax
treatment or tax structure to the extent nondisclosure is reasonably necessary
in order to comply with applicable securities laws.

          (b) None of the Loan Parties shall issue any press release or other
public disclosure (other than any filing required to be made with the SEC) using
the name of any of the Lenders or any affiliate of a Lender in connection with
this transaction without both (i) providing any such Lender with at least two
(2) Business Days' prior notice and (ii) obtaining the Lender's or such Lender's
affiliate's prior written consent. Nothing in the immediately preceding sentence
shall prevent any disclosure of the name of any Lender or of any affiliate of
such Lender to the extent (and only to the extent) required by any Requirement
of Law, provided that, the person or entity making such disclosure shall
nonetheless consult with the affected Lender or the relevant affiliate of such
Lender prior to issuing such press release or other public disclosure.

          (c) Notwithstanding the foregoing, the Lenders and their Affiliates
shall have the right to (i) list and exhibit the Borrower's name and logo, as
provided by the Borrower from time to time, and describe the transaction that is
the subject of this Agreement in their marketing materials and (ii) post such
information, including, without limitation, a customary "tombstone," on their
web site.

          9.15. Release of Collateral Security and Guarantee Obligations.

(a) Notwithstanding anything to the contrary contained herein or in any other
Loan Document, upon request of the Borrower in connection with any Disposition
of Property or substitution of Mortgaged Property permitted by the Loan
Documents, the Administrative Agent shall (without notice to, or vote or consent
of, any Lender, or any Affiliate of any Lender that is a party to any Specified
Hedge Agreement) take such actions as shall be required to release its security
interest in any Collateral being Disposed of in such Disposition or substituted,
as the case may be, and to release any guarantee obligations under any Loan
Document of any Person being Disposed of in such Disposition, to the extent
necessary to permit consummation of such Disposition or substitutions in
accordance with the Loan Documents.

<PAGE>

                                                                              85

          (b) Notwithstanding anything to the contrary contained herein or any
other Loan Document, when all Obligations (other than obligations in respect of
any Specified Hedge Agreement) have been paid in full, all Commitments have
terminated or expired, upon request of the Borrower, the Administrative Agent
shall (without notice to, or vote or consent of, any Lender, or any affiliate of
any Lender that is a party to any Specified Hedge Agreement) take such actions
as shall be required to release its security interest in all Collateral, and to
release all guarantee obligations under any Loan Document, whether or not on the
date of such release there may be outstanding Obligations in respect of
Specified Hedge Agreements. Any such release of guarantee obligations shall be
deemed subject to the provision that such guarantee obligations shall be
reinstated if after such release any portion of any payment in respect of the
Obligations guaranteed thereby shall be rescinded or must otherwise be restored
or returned upon the insolvency, bankruptcy, dissolution, liquidation or
reorganization of the Borrower or any Subsidiary Guarantor, or upon or as a
result of the appointment of a receiver, intervenor or conservator of, or
trustee or similar officer for, the Borrower or any Subsidiary Guarantor or any
substantial part of its property, or otherwise, all as though such payment had
not been made.

          9.16. Accounting Changes. In the event that any "Accounting Change"
(as defined below) shall occur and such change results in a change in the method
of calculation of financial covenants, standards or terms in this Agreement,
then the Borrower and the Administrative Agent agree to enter into negotiations
in order to amend such provisions of this Agreement so as to equitably reflect
such Accounting Changes with the desired result that the criteria for evaluating
the Borrower's financial condition shall be the same after such Accounting
Changes as if such Accounting Changes had not been made. Until such time as such
an amendment shall have been executed and delivered by the Borrower, the
Administrative Agent and the Required Lenders, all financial covenants,
standards and terms in this Agreement shall continue to be calculated or
construed as if such Accounting Changes had not occurred. "Accounting Changes"
refers to changes in accounting principles required by the promulgation of any
rule, regulation, pronouncement or opinion by the Financial Accounting Standards
Board of the American Institute of Certified Public Accountants or, if
applicable, the SEC.

          9.17. WAIVERS OF JURY TRIAL. THE BORROWER, THE ADMINISTRATIVE AGENT
AND THE LENDERS HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVE TRIAL BY JURY IN
ANY LEGAL ACTION OR PROCEEDING RELATING TO THIS AGREEMENT OR ANY OTHER LOAN
DOCUMENT AND FOR ANY COUNTERCLAIM THEREIN.

          9.18. Subordination, Non-Disturbance and Attornment. Within ten
Business Days following receipt from any Loan Party of the lease, license or
other occupancy arrangement (a "Lease") of any Tower and related property or
real property owned or leased by such Loan Party which is subject to a Mortgage
pursuant to Section 5.12 (the "Leased Property") with any person or entity not
prohibited by this Agreement (a "Tenant") and either (x) the Approved Form of
SNDA or (y) the Tenant's requested version thereof, the Administrative Agent,
individually and on behalf of each of the Lenders, shall execute and deliver to
such Loan Party an agreement (an "SNDA") in form and substance reasonably
satisfactory to the Administrative Agent pursuant to which (a) the Tenant
subordinates the Lease and all of Tenant's rights and estates thereunder to the
Security Document held by the Administrative Agent and encumbering the Leased
Property, (b) the Tenant agrees that Tenant will attorn to and recognize the

<PAGE>

                                                                              86

Administrative Agent or the purchaser at any foreclosure sale or any sale under
a power of sale contained in any such Security Document as the landlord under
the Lease for the balance of the leasehold term then remaining, (c) the
Administrative Agent consents to the Lease and (d) the Administrative Agent
agrees that, notwithstanding the terms of the applicable Security Document held
by the Administrative Agent, or any default, expiration, termination,
foreclosure, sale, entry or other act or omission under or pursuant to such
Security Document or a transfer on lieu of foreclosure, so long as the Tenant is
not in default under such Lease, the Tenant shall not be disturbed in the
peaceful enjoyment of the Leased Property nor shall the Lease be terminated or
canceled at any time, except in the event the Loan Party shall have the right to
terminate the Lease under the terms and provisions expressly set forth therein.

<PAGE>

          IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed and delivered by their proper and duly authorized officers as
of the day and year first above written.

                                    SBA TELECOMMUNICATIONS, INC.

                                    By: /s/ Thomas P. Hunt
                                        ----------------------------------------
                                        Name: Thomas P. Hunt
                                        Title: Senior Vice President and
                                               General Counsel

                                    GENERAL ELECTRIC CAPITAL
                                    CORPORATION, as Administrative Agent and
                                    a Lender

                                    By: /s/ Molly S. Ferguson
                                        ---------------------------------------
                                        Name: Molly S. Ferguson
                                        Title: Manager, Operations

<PAGE>

                                LENDERS:

                                    OAK HILL SECURITIES FUND, L.P.

                                    By: Oak Hill Securities GenPar, L.P.
                                        its General Partner

                                    By: Oak Hill Securities MGP, Inc.,
                                        its General Partner

                                        By:    /s/ Scott Krase
                                            ------------------------------------
                                            Name:  Scott Krase
                                            Title: VP

                                    OAK HILL SECURITIES FUND II, L.P.

                                    By: Oak Hill Securities GenPar II, L.P.
                                        its General Partner

                                    By: Oak Hill Securities MGP II, Inc.,
                                        its General Partner

                                        By:    /s/ Scott Krase
                                            ------------------------------------
                                            Name:  Scott Krase
                                            Title: VP

                                    LERNER ENTERPRISES, L.P.

                                    By: Oak Hill Asset Management, Inc.
                                        As advisor and attorney-in-fact to
                                        Lerner Enterprises, L.P.

                                        By:    /s/ Scott Krase
                                            ------------------------------------
                                            Name:  Scott Krase
                                            Title: Managing Director

<PAGE>

                                    CARDINAL INVESTMENT PARTNERS I, L.P.

                                        Advisor: Oak Hill Asset Management, Inc.

                                        By: Oak Hill Asset Management, Inc.
                                            As advisor and attorney-in-fact to
                                            Cardinal Investment Partners I, L.P.

                                        By: /s/ Scott Krase
                                            ------------------------------------
                                            Name: Scott Krase
                                            Title: Managing Director

                                    THE LELAND STANFORD JUNIOR UNIVERSITY

                                    Oak Hill Advisors, L.P.
                                    as Investment Manager for
                                    The Leland Stanford Junior University

                                    By: Oak Hill Advisors MGP, Inc.
                                        its Managing General Partner

                                        By: /s/ Scott Krase
                                            ------------------------------------
                                            Name: Scott Krase
                                            Title: Vice President

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