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                         BRIDGE NOTE PURCHASE AGREEMENT

                                 BY AND BETWEEN

                      HORIZON PERSONAL COMMUNICATIONS, INC.

                                       AND

                           FIRST UNION INVESTORS, INC.

                                   DATED AS OF

                                FEBRUARY 15, 2000

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                                TABLE OF CONTENTS

Section                                                                    Page

SECTION 1.     DEFINITIONS...................................................1
         (a)   Definitions...................................................1
         (b)   Accounting Terms; Financial Statements........................11

SECTION 2.     AUTHORIZATION OF ISSUANCE OF THE NOTE.........................11

SECTION 3.     PURCHASE AND SALE OF SECURITIES...............................12

SECTION 4.     CONDITIONS OF CLOSING.........................................12
         (a)   Representations, Warranties and Covenants.....................12
         (b)   Inspection of Property and Business...........................12
         (c)   Consent of Third Parties, etc.................................12
         (d)   No Adverse Change.............................................13
         (e)   Financial Information.........................................13
         (f)   Certain Agreements............................................13
         (g)   Opinions of Counsel...........................................13
         (h)   Delivery of Closing Documents.................................13
         (i)   Payment of Fees and Expenses..................................15
         (j)   Litigation....................................................15
         (k)   Ownership Structure...........................................15
         (l)   Bankruptcy....................................................15
         (m)   Legality of Offering..........................................15
         (n)   Financial Covenants...........................................15
         (o)   Additional Matters............................................15

SECTION 5.     REPRESENTATIONS AND WARRANTIES OF THE COMPANY.................15
         (a)   Organization, Good Standing and Qualification.................16
         (b)   Subsidiaries and Investments..................................16
         (c)   Authorized and Issued Capital.................................16
         (d)   Authorization.................................................17
         (e)   Litigation....................................................17
         (f)   Tax Matters...................................................17
         (g)   Organizational and Governing Documents........................18
         (h)   Government Approvals; Consents................................18
         (i)   Representations and Warranties in Other Agreements............18
         (j)   Disclosure....................................................18
         (k)   Compliance with Securities Laws...............................18
         (l)   No Brokers....................................................19
         (m)   Financial Statements..........................................19
         (n)   Absence of Undisclosed Liabilities............................19
         (o)   Title To Properties and Assets................................20

                                       i
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         (p)   Contracts and Commitments.....................................20
         (q)   Employees.....................................................20
         (r)   Compliance with Laws..........................................21
         (s)   Transactions with Affiliates..................................21
         (t)   Hazardous and Toxic Materials.................................21
         (u)   Solvency......................................................22
         (v)   Certain Federal Regulations...................................22
         (w)   Acquisition and Senior Loan Documents.........................23
         (x)   Use of Proceeds...............................................23
         (y)   Employee Benefit Plans........................................23
         (z)   Intellectual Property.........................................23
         (aa)  Absence of Certain Changes or Events..........................24
         (cc)  Insurance.....................................................25

SECTION 6.  REPRESENTATIONS AND WARRANTIES OF THE PURCHASER..................25

SECTION 7.  COVENANTS........................................................26
         (a)   Payment of Notes..............................................26
         (b)   Financial Statements..........................................26
         (c)   Other Business and Financial Information......................28
         (d)   Corporate Existence; Franchises; Maintenance of Properties....30
         (e)   Compliance with Laws..........................................30
         (f)   Payment of Obligations........................................30
         (g)   Insurance.....................................................31
         (h)   Maintenance of Books and Records; Inspection..................31
         (i)   Creation or Acquisition of Subsidiaries.......................31
         (j)   Reserved......................................................31
         (k)   Further Assurances............................................31
         (l)   Use of Proceeds...............................................31
         (m)   Compliance with Agreements....................................32
         (n)   Indemnification...............................................32
         (o)   ERISA.........................................................33
         (p)   Brokerage.....................................................33

SECTION 8.  FINANCIAL COVENANTS..............................................34

SECTION 9.  NEGATIVE COVENANTS...............................................34
         (a)   Merger; Consolidation.........................................34
         (b)   Indebtedness..................................................35
         (c)   Liens.........................................................35
         (d)   Disposition of Assets.........................................36
         (e)   Investments...................................................36
         (f)   Restricted Payments...........................................37
         (g)   Transactions with Affiliates..................................38
         (h)   Lines of Business.............................................38

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         (i)   Certain Amendments............................................38
         (j)   Limitation on Certain Restrictions............................38
         (k)   No Other Negative Pledges.....................................39
         (l)   Fiscal Year...................................................39
         (m)   Accounting Changes............................................39
         (n)   Extensions of Credit Agreements...............................39
         (o)   Limitations on Layering.......................................39

SECTION 10  Reserved.........................................................40

SECTION 11  GENERAL..........................................................40
         (a)   Entire Agreement..............................................40
         (b)   Reimbursement of Expenses.....................................40
         (c)   Survival of Agreements and Representations and Warranties.....40
         (d)   No Waiver.....................................................41
         (e)   Binding Effect; Participations................................41
         (f)   Initial Holder................................................41
         (g)   Cumulative Powers.............................................41
         (h)   Loss of Securities; Reissue of Securities in
                  Lesser Denominations.......................................41
         (i)   Communications................................................42
         (j)   Legend........................................................42
         (k)   Confidentiality; Public Announcements.........................42
         (l)   Governing Law.................................................43
         (m)   Headings......................................................43
         (n)   Multiple Originals............................................43
         (o)   Amendment or Waiver...........................................43
         (p)   Waiver of Jury Trial..........................................44
         (q)   Consent to Jurisdiction and Service of Process................44
         (r)   Arbitration...................................................44

Schedules
---------
Schedule 4(e)     Financial Information
Schedule 5(a)     Organizational Matters
Schedule 5(b)     Subsidiaries and Investments
Schedule 5(c)     Capitalization
Schedule 5(e)     Litigation
Schedule 5(f)     Tax Matters
Schedule 5(f)     Governmental Approvals; Consents
Schedule 5(p)     Material Contracts
Schedule 5(q)     Employees
Schedule 5(s)     Affiliate Contracts
Schedule 5(t)     Environmental Matters
Schedule 5(x)     Use of Proceeds
Schedule 5(y)     Employee Benefit Plans
Schedule 5(z)     Intellectual Property

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Schedule 5(aa)    Absence of Certain Changes or Events
Schedule 5(bb)    Insurance
Schedule 9(b)     Permitted Indebtedness
Schedule 9(c)     Permitted Liens
Schedule 9(e)     Permitted Investments
Schedule 10(i)    Addresses for Notices

Exhibits
--------
Exhibit 1(a)      Form of RTFC Commitment Letter and Term Sheet
Exhibit 2(a)      Form of Note
Exhibit 4(f)(i)   Form of Conversion Agreement
Exhibit 4(f)(ii)  Form of Acquisition Documents
Exhibit 4(g)(i)   Form of Opinion of Company Counsel
Exhibit 4(h)(ix)  Form of Officers' Certificate
Exhibit 4(h)(x)   Form of Secretary's Certificate
Exhibit 7(b)(iii) Form of Management Report
Exhibit 7(i)      Form of Guaranty

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                         BRIDGE NOTE PURCHASE AGREEMENT

     THIS BRIDGE NOTE PURCHASE  AGREEMENT (this "Agreement") is made and entered
into as of this  15th day of  February,  2000,  by and  among  HORIZON  PERSONAL
COMMUNICATIONS,  INC.,  an Ohio  corporation  (the  "Company"),  and FIRST UNION
INVESTORS, INC., a North Carolina corporation (the "Purchaser").

                              STATEMENT OF PURPOSE

     WHEREAS,  the Company,  the Parent (as defined below) and its  Subsidiaries
(as defined  below) are engaged in the business of providing  telecommunications
services;

     WHEREAS, the Company has requested that the Purchaser make an investment in
the Company in the form of a senior  subordinated  bridge  note in the  original
principal amount of $13,000,000 (the "Subdebt Investment"). The Company will use
the proceeds of the Subdebt Investment as set forth under Section 5(x); and

     WHEREAS, the Company and the Purchaser have reached certain agreements with
regard to the foregoing  transactions,  all upon the terms and  conditions  more
particularly described herein;

                                    AGREEMENT

     NOW, THEREFORE, in consideration of the promises,  covenants and agreements
contained  herein,  the parties hereto hereby  mutually  covenant,  contract and
agree as follows:

SECTION 1.        DEFINITIONS.

     (a) Definitions. As used in this Agreement and unless the context otherwise
requires, the following terms have the meanings indicated below.

     "AAA" has the meaning set forth in Section 11(r).

     "Acquisition"  shall mean the  acquisition  by the Company of 78,900 shares
(19,725  voting and  59,175  non-voting)  of the  Parent's  common  stock on the
Closing Date pursuant to the terms of the Acquisition Documents.

     "Acquisition  Documents" shall mean (i) that certain  Assignment  Agreement
dated as of February  15,  2000 by and between the Company and the Parent,  (ii)
the Stock Power dated February 15, 2000 executed by ALLTEL Investments, Inc. and
(iii) the letter  agreement  dated October 27, 1999 between ALLTEL  Investments,
Inc. to Horizon Telecom Inc.

     "Affiliate" means with respect to any Person, a Person (other than a Wholly
Owned  Subsidiary) (i) which directly or indirectly  controls,  or is controlled

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by, or is under common control with, such Person, (ii) which owns 10% or more of
the equity interests of such Person (iii) 10% or more of the voting stock (or in
the  case of a  Person  which is not a  corporation,  10% or more of the  equity
interests) of which is owned by such Person or (iv) who is an executive  officer
or director of such Person. The term "control" means the possession, directly or
indirectly,  of the power to direct or cause the direction of the management and
policies of a Person,  whether  through the ownership of voting  securities,  by
contract or otherwise.  For purposes of this  Agreement and without  limitation,
each of the Responsible  Officers and their respective  Affiliates shall each be
deemed to be an Affiliate of the Company and its Subsidiaries.

     "Agreement" has the meaning set forth in the Preamble, as amended, modified
or supplemented from time to time in accordance with its terms.

     "Arbitration Rules" has the meaning set forth in Section 11(r).

     "Authorized  Officer" means,  with respect to any action specified  herein,
any  officer  of the  Company  duly  authorized  by  resolution  of the Board of
Directors to take such action on its behalf,  and whose signature and incumbency
shall have been  certified  to the  Purchaser  by the  secretary or an assistant
secretary of the Company.

     "Big Five  Accounting  Firm" means any of Arthur  Andersen & Co. LLP,  KPMG
Peat Marwick, Ernst & Young LLP, Deloitte & Touche or PriceWaterhouse Coopers or
any of their respective successors.

     "Board of  Directors"  means that certain  board of  directors  established
pursuant to the bylaws/code of regulations of the Company.

     "Business  Day"  means any day other than a  Saturday  or  Sunday,  a legal
holiday or a day on which  commercial  banks in  Charlotte,  North  Carolina are
required by law to be closed.

     "Capital Stock" means (i) with respect to any Person that is a corporation,
any and all shares, interests or equivalents in capital stock (whether voting or
nonvoting,  and whether common or preferred) of such corporation,  and (ii) with
respect  to any  Person  that is not a  corporation,  any  and all  partnership,
membership,  limited liability company or other equity interests of such Person;
and in each case,  any and all  warrants,  rights,  options or other  derivative
securities to purchase any of the foregoing.

     "Cash   Equivalents"   means  (i)  securities  issued  or   unconditionally
guaranteed  by the United  States of  America  or any agency or  instrumentality
thereof, backed by the full faith and credit of the United States of America and
maturing  within 90 days from the date of  acquisition,  (ii)  commercial  paper
issued by any Person organized under the laws of the United States of America or
any state or political  subdivision  thereof,  maturing  within 90 days from the
date of acquisition and, at the time of acquisition, having a rating of at least
A-1 or the equivalent  thereof by Standard & Poor's Ratings Services or at least
P-1 or the equivalent  thereof by Moody's  Investors  Service,  Inc., (iii) time
deposits and  certificates  of deposit  maturing within 90 days from the date of

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issuance and issued by a bank or trust company  organized  under the laws of the
United States of America or any state or political  subdivision thereof that has
combined  capital  and  surplus of at least  $500,000,000  and that has (or is a
Subsidiary of a bank holding company that has) a long-term unsecured debt rating
of at least A or the equivalent thereof by Standard & Poor's Ratings Services or
at least A2 or the equivalent thereof by Moody's Investors  Service,  Inc., (iv)
repurchase  obligations  with a term not  exceeding  seven days with  respect to
underlying  securities  of the types  described in clause (i) above entered into
with any bank or trust company  meeting the  qualifications  specified in clause
(iii) above,  and (v) money market funds at least 95% of the assets of which are
continuously invested in securities of the type described in clause (i) above.

     "Casualty  Event"  means,  with  respect  to any  property  (including  any
interest in  property) of the Company or any of its  Subsidiaries,  any loss of,
damage to, or  condemnation  or other  taking of,  such  property  for which the
Company  or  such  Subsidiary  receives  insurance   proceeds,   proceeds  of  a
condemnation award or other compensation.

     "Change of Control"  means the  occurrence of any of the following  events:
(i) the  failure of the McKell  Affiliates  to  maintain  beneficial  ownership,
directly or indirectly,  of Voting Stock of the Parent  representing 51% or more
of the combined voting power of all Voting Stock of the Parent;  (ii) any Person
or two or more Persons acting in concert  (other than (x) the McKell  Affiliates
and (y)  assignees  of the  Purchaser  unless such  assignees  of the  Purchaser
acquire Voting Stock from other stockholders of the Company) shall have acquired
beneficial  ownership,  directly or  indirectly,  of, or shall have  acquired by
contract or  otherwise,  or shall have  entered  into a contract or  arrangement
that,  upon  consummation,  will result in its or their  acquisition of, control
over,  Voting  Stock of the Parent (or other  securities  convertible  into such
Voting  Stock)  representing  25% or more of the  combined  voting  power of all
Voting  Stock of the  Parent;  and (iii) the  failure of the Parent to  maintain
beneficial  ownership,  directly or  indirectly,  of Voting Stock of the Company
representing 90% or more of the combined voting power of all Voting Stock of the
Company,  provided that, for the purpose of subsection  (iii) the acquisition by
the Company of shares of Bright Personal Communications  Services, LLC shall not
be a "Change of Control".

     "Closing" has the meaning set forth in Section 3(b).

     "Closing Date" means the date on which the Closing occurs.

     "Code"  means the Internal  Revenue  Code of 1986,  as amended from time to
time, and the regulations promulgated and rulings issued thereunder.

     "Commission" means the Securities and Exchange Commission and any successor
Person thereof.

     "Company" has the meaning set forth in the Preamble.

     "Contingent  Obligation"  means, with respect to any Person,  any direct or
indirect liability of such Person with respect to any indebtedness or obligation

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of the type described in clauses (i) through (viii) and (x) of the definition of
Indebtedness,  liability  or other  obligation  (the  "primary  obligation")  of
another  Person  (the  "primary  obligor"),  whether or not  contingent,  (a) to
purchase,  repurchase  or  otherwise  acquire  such  primary  obligation  or any
property  constituting  direct or indirect security therefor,  (b) to advance or
provide funds (i) for the payment or discharge of any such primary obligation or
(ii) to maintain  working  capital or equity  capital of the primary  obligor or
otherwise to maintain the net worth or solvency or any balance sheet item, level
of income  or  financial  condition  of the  primary  obligor,  (c) 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 in respect
thereof to make payment of such primary obligation or (d) otherwise to assure or
hold harmless the owner of any such primary  obligation  against loss or failure
or  inability  to perform in respect  thereof;  provided,  however,  that,  with
respect to the  Company and its  Subsidiaries,  the term  Contingent  Obligation
shall not include  endorsements for collection or deposit in the ordinary course
of business.

     "Contractual  Obligation" means, with respect to a Person, any provision of
(i) any security issued by such Person,  including  provisions  contained in the
articles or certificate of  incorporation or bylaws or other  organizational  or
governing documents of such Person, or (ii) any agreement,  franchise,  license,
lease, permit,  undertaking,  contract,  indenture,  mortgage,  deed of trust or
other instrument or understanding to which such Person is a party or by which it
or any of its assets or property is bound.

     "Conversion Agreement" shall have the meaning set forth in Section 4(f).

     "Credit  Agreements"  collectively means (i) that certain credit agreement,
dated as of August 29, 1997 (as amended or otherwise  modified from time to time
in accordance with the terms hereof) between Rural Telephone Finance Corporation
("RTFC") and the Company (ii) that certain  proposed  credit  agreement  between
RTFC and the Company  outlined  in the term sheet and  commitment  letter  dated
January 31, 2000  pursuant to which an  aggregate  of  $45,500,000  ($40,500,000
secured  term  loan at  $5,000,000  secured  revolving  line of  credit)  can be
incurred (a complete copy of such term sheet and  commitment  letter is attached
hereto as Exhibit 1(a)),  (iii) that certain  Guaranty issued by Motorola,  Inc.
("Motorola")  in favor of the RTFC in  connection  with the loan  referred to in
item (i) above, (iv) that certain  Reimbursement and Security  Agreement,  dated
August 29, 1997, between the Company and Motorola,  (v) the proposed Guaranty to
be issued by Motorola in favor of the RTFC in connection  with the loan referred
to in  item  (ii)  above  and  (vi)  the  proposed  Reimbursement  and  Security
Agreement, between the Company and Motorola in connection with the loan referred
to in item (ii) above.

     "Credit Documents" means the Credit  Agreements,  and all other agreements,
instruments,  documents and certificates now or hereafter executed and delivered
to RTFC or Motorola by or on behalf of the Company,  its  Subsidiaries,  RTFC or
Motorola  with  respect  to  the  Credit   Agreements,   and  the   transactions
contemplated  thereby,  in  each  case as  amended,  modified,  supplemented  or
restated from time to time in accordance  with their terms and the terms of this
Agreement.

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     "Default"  means any event or condition  that,  with the passage of time or
giving of notice, or both, would constitute an Event of Default.

     "Disputes" has the meaning set forth in Section 11(r).

     "Disqualified Capital Stock" means, with respect to any Person, any Capital
Stock of such Person that,  by its terms (or by the terms of any  security  into
which it is convertible or for which it is exchangeable),  or upon the happening
of any event or otherwise,  (i) matures or is mandatorily  redeemable or subject
to any mandatory repurchase  requirement,  pursuant to a sinking fund obligation
or  otherwise,  (ii)  is  redeemable  or  subject  to any  mandatory  repurchase
requirement  at the sole option of the holder  thereof,  or (iii) is convertible
into or  exchangeable  for  (whether  at the  option of the issuer or the holder
thereof) (a) debt securities or (b) any Capital Stock referred to in (i) or (ii)
above,  in each case under (i),  (ii) or (iii)  above at any time on or prior to
February 14, 2001;  provided,  however,  that only the portion of Capital  Stock
that so matures or is mandatorily redeemable,  is so redeemable at the option of
the holder  thereof,  or is so convertible or  exchangeable  on or prior to such
date shall be deemed to be Disqualified Capital Stock.

     "Dollars" or "$" means dollars of the United States of America.

     "EBITDA" means  consolidated net income of the Company and its Subsidiaries
increased by (i) any interest expense,  (ii) any income taxes paid or accrued in
the  applicable  fiscal  year  and  (iii)  any  allowance  for  depreciation  or
amortization, in each case determined in accordance with GAAP for such period.

     "Environmental Claims" has the meaning set forth in Section 5(t).

     "Environmental Law" has the meaning set forth in Section 5(t).

     "Environmental Notice" has the meaning set forth in Section 5(t).

     "ERISA"  means the Employee  Retirement  Income  Security  Act of 1974,  as
amended  from  time to  time,  and any  successor  statute  and the  regulations
promulgated and rulings issued thereunder.

     "ERISA Affiliate" means any trade or business (whether or not incorporated)
that is a member  of a group of  which  the  Company  is a member  and  which is
treated as a single employer under Section 414 of the Code.

     "ERISA  Event" with  respect to any Person  means (i) the  occurrence  of a
reportable  event,  within the meaning of Section 4043 of ERISA, with respect to
any Plan of such Person or any of its ERISA Affiliates  unless the 30-day notice
requirement  with  respect to such event has been  waived by the PBGC;  (ii) the
provision  by the  administrator  of any Plan of such Person or any of its ERISA
Affiliates  of a notice of intent to  terminate  such Plan,  pursuant to Section
4041(a)(2) of ERISA  (including any such notice with respect to a Plan amendment
referred to in Section 4041(e) of ERISA); (iii) the cessation of operations at a

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facility  of such  Person or any of its ERISA  Affiliates  in the  circumstances
described in Section 4068(f) of ERISA; (iv) the failure by such Person or any of
its  ERISA  Affiliates  to  make a  payment  to a Plan  required  under  Section
302(f)(1) of ERISA; (v) the adoption of an amendment to a Plan of such Person or
any of its ERISA  Affiliates  requiring  the provision of security to such Plan,
pursuant  to  Section  307 of  ERISA;  or (vi)  the  institution  by the PBGC of
proceedings  to terminate a Plan of such Person or any of its ERISA  Affiliates,
pursuant to Section 4042 of ERISA,  or the  occurrence of any event or condition
described  in  Section  4042 of ERISA  that  could  constitute  grounds  for the
termination of, or the appointment of a trustee to administer, such Plan.

     "Event of Default" has the meaning set forth in the Note.

     "Exchange Act" means the Securities  Exchange Act of 1934, as amended,  and
the rules and regulations of the Commission thereunder.

     "Financial Officer" means, with respect to the Company, the chief financial
officer, vice president - finance,  principal accounting officer or treasurer of
the Company.

     "Financial Statements" has the meaning set forth in Section 4(e).

     "GAAP" means generally accepted accounting principles,  as set forth in the
statements,  opinions and pronouncements of the Accounting Principles Board, the
American Institute of Certified Public Accountants and the Financial  Accounting
Standards Board,  consistently  applied and maintained as in effect from time to
time (subject to the provisions of Section 1(b)).

     "Governmental Authority" means any nation or government, any state or other
political subdivision thereof and any central bank thereof, any municipal local,
city or county  government,  and any entity exercising  executive,  legislative,
judicial, regulatory or administrative functions of or pertaining to government,
and any  corporation  or other  entity  owned or  controlled,  through  stock or
capital ownership or otherwise, by any of the foregoing.

     "Guaranty" has the meaning set forth in Section 7(i).

     "Hazardous Discharge" has the meaning set forth in Section 5(t).

     "Hazardous Materials" has the meaning set forth in Section 7(o).

     "Indebtedness" means, with respect to any Person (without duplication), (i)
all indebtedness and obligations of such Person for borrowed money or in respect
of loans or advances of any kind, (ii) all obligations of such Person  evidenced
by notes,  bonds,  debentures or similar  instruments,  (iii) all  reimbursement
obligations  of such Person with respect to surety bonds,  letters of credit and
bankers'  acceptances (in each case,  whether or not drawn or matured and in the
stated amount  thereof,  (iv) all obligations of such Person to pay the deferred
purchase price of property or services,  (v) all indebtedness created or arising

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<PAGE>

under any conditional  sale or other title  retention  agreement with respect to
property acquired by such Person,  (vi) all obligations of such Person as lessee
under leases that are or are required to be, in accordance  with GAAP,  recorded
as  capital  leases,  to the  extent  such  obligations  are  required  to be so
recorded,  (vii) all Disqualified  Capital Stock issued by such Person, with the
amount of  Indebtedness  represented  by such  Disqualified  Capital Stock being
equal to the greater of its voluntary or involuntary  liquidation preference and
its maximum fixed repurchase price, but excluding accrued dividends, if any (for
purposes  hereof,  the  "maximum  fixed  repurchase  price" of any  Disqualified
Capital Stock that does not have a fixed repurchase price shall be calculated in
accordance  with  the  terms  of  such  Disqualified  Capital  Stock  as if such
Disqualified  Capital  Stock were  purchased  on any date on which  Indebtedness
shall be required to be determined pursuant to this Agreement, and if such price
is based  upon,  or  measured  by, the fair  market  value of such  Disqualified
Capital Stock, such fair market value shall be determined reasonably and in good
faith by the board of  directors or other  governing  body of the issuer of such
Disqualified  Capital  Stock),  (viii) the net  termination  obligations of such
Person  under  any  Hedge  Agreements,  calculated  as of any  date  as if  such
agreement or arrangement  were  terminated as of such date,  (ix) all Contingent
Obligations of such Person and (x) all  indebtedness  referred to in clauses (i)
through (ix) above secured by any Lien on any property or asset owned or held by
such Person  regardless of whether the  indebtedness  secured thereby shall have
been assumed by such Person or is nonrecourse to the credit of such Person.

     "Indemnified Party" has the meaning set forth in Section 7(n).

     "Initial Public Offering" means an initial  underwritten public offering of
the Company's Common Stock pursuant to a registration  statement filed under the
Securities Act.

     "Intellectual  Property" means all  technology,  know-how and trade secrets
relating  to or used  in the  business  of the  Company  and  its  Subsidiaries,
including  (i) the computer  programs  and  software  relating to or used in the
business of the  Company,  together  with the  operating  codes,  source  codes,
updates,  upgrades,  modifications,  enhancements  and any  user  and  technical
documentation  or utilities  with  respect  thereto,  (ii) all  patents,  patent
licenses and patent applications,  copyrights and copyright applications,  trade
secrets,  proprietary  information,  proposals and rights and other intellectual
property rights relating to the business of the Company and its Subsidiaries and
(iii) all  trademarks,  trade  names,  service  marks and logos  (including  any
registration  and any  application  for  registration  of any of the foregoing),
relating to or used in the business of the Company and its Subsidiaries.

     "Intellectual Property Licenses" has the meaning set forth in Section 5(z).

     "Investments" has the meaning set forth in Section 9(e).

     "Latest  Balance  Sheet"  means the balance  sheet dated as of December 31,
1999.

     "Letter  Agreement" shall mean that certain letter agreement dated February
15, 2000 between the Company and the Purchaser.

                                       7
<PAGE>

     "Lien" shall mean any mortgage, pledge, hypothecation, assignment, security
interest, lien (statutory or otherwise),  preference,  priority, charge or other
encumbrance of any nature, whether voluntary or involuntary,  including, without
limitation,  the  interest of any vendor or lessor  under any  conditional  sale
agreement,  title  retention  agreement,  capital  lease or any  other  lease or
arrangement having substantially the same effect as any of the foregoing, or set
off  rights  of  depository  institutions  against  deposit  accounts  with such
depository institutions for customary fees and expenses.

     "Losses" has the meaning set forth in Section 7(n).

     "Material  Adverse  Change"  means  any  material  adverse  change  in  the
condition (financial or otherwise),  operations,  business, properties or assets
of the Company and its Subsidiaries, taken as a whole.

     "Material  Adverse Effect" means (a) a material adverse effect upon (i) the
condition (financial or otherwise),  operations,  business, properties or assets
of the Parent and its  Subsidiaries  taken as a whole,  (ii) the  ability of the
Company,  the Parent or any  Subsidiary  to perform its  obligations  under this
Agreement  or any of the other  Transaction  Documents to which it is a party or
(iii) the legality,  validity or  enforceability of this Agreement or any of the
other Transaction  Documents or the rights and remedies of the Purchaser and the
parties hereunder and thereunder.

     "Material Contracts" has the meaning set forth in Section 5(p).

     "McKell  Affiliates" shall mean all direct and lineal descendants of Joseph
Scott McKell and their respective spouses, trusts and Affiliates.

     "Multiemployer  Plan" means any "multiemployer  plan "within the meaning of
Section  4001(a)(3) of ERISA to which the Company or any ERISA Affiliate  makes,
is making or is obligated to make contributions or has made or been obligated to
make contributions.

     "Note" or "Notes" has the meaning set forth in Section 2.

     "Obligations"  means  all  principal  of and  interest  (including,  to the
greatest extent  permitted by law,  post-petition  interest) on the Note and all
fees,  expenses,  indemnities and other obligations owing, due or payable at any
time by the Company to the Purchaser or any other Person entitled thereto, under
this Agreement or any of the other Transaction Documents.

     "Organic  Change"  means any of the  following:  (i) any sale,  assignment,
lease, conveyance,  exchange,  transfer,  sale-leaseback or other disposition of
more than 25% of the  assets,  business  or  properties  of the  Company and its
Subsidiaries,   on  a  consolidated  basis,  whether  in  one  or  a  series  of
transactions,  whether or not in the ordinary  course of business and whether or
not directly or  indirectly or through the sale or other  disposition  of equity

                                       8
<PAGE>

securities  of  any  of  the  Subsidiaries  of the  Company,  other  than  those
transactions  expressly  permitted by clauses (i) through  (iii) of Section 9(d)
and (ii) any (x) merger, consolidation or other combination to which the Company
or any  of its  Subsidiaries  is a  party  or  (y)  liquidation,  winding  up or
dissolution  of the  Company  or any of its  Subsidiaries,  other than (A) those
transactions  expressly  permitted by clauses (i) and (ii) of Section 9(a),  (B)
the Company may merge with an Affiliate  incorporated  solely for the purpose of
reincorporating  the  Company in another  jurisdiction  to realize  tax or other
benefits  and (C) those  transactions  expressly  consented to in writing by the
Purchaser.

     "Owned Intellectual Property" has the meaning set forth in Section 5(z).

     "PBGC" means the Pension  Benefit  Guaranty  Corporation  and any successor
thereto.

     "Parent" means Horizon Telecom, Inc., an Ohio corporation.

     "Permanent  Financing"  means any debt or equity  financing by the Company;
provided,  however,  that  neither the  Company's  issuance  of debt  securities
constituting  Permitted  Senior  Debt  nor  the  Company's  issuance  of  equity
securities in a private  placement  which yields gross  proceeds in an aggregate
amount of less than $20,000,000 shall constitute a Permanent Financing.

     "Permitted Acquisition" means (a) any Acquisition with respect to which all
of the following  conditions are satisfied:  (i) each business acquired shall be
within the  permitted  lines of business  described in Section 9(h) and shall be
incorporated,  organized or formed in the United States,  (ii) any Capital Stock
given as  consideration  in connection  therewith  shall be Capital Stock of the
Company or one of its Affiliates,  other than a Subsidiary of the Company, (iii)
in the case of an  Acquisition  involving the  acquisition of control of Capital
Stock of any Person,  immediately  after giving effect to such  Acquisition such
Person (or the surviving Person, if the Acquisition is effected through a merger
or consolidation)  shall be the Company or a Subsidiary of the Company (in which
case,  (A)  the  Company  and  such   Subsidiary's   management  and/or  selling
shareholders  (as  such  management  and  shareholders  are in  effect  for  the
corresponding acquired business during the fiscal quarter, immediately preceding
such  Permitted  Acquisition)  shall  own,  in  the  aggregate,   100%  of  such
Subsidiary's Capital Stock and (B) the Company shall own no less than 75% of the
Total Voting Power of such  Subsidiary),  and (iv) the Person to be acquired (or
its board of directors or  equivalent  governing  body) has not (A) announced it
will oppose such Acquisition or (B) commenced any action which alleges that such
Acquisition  violates,  or will violate,  any  Requirement of law and all of the
conditions  and  requirements  of  Sections  7(i)  and 7(k)  applicable  to such
Acquisition  are  satisfied;  (b) any other  Acquisition  to which the Purchaser
shall have given its prior  written  consent  (which  consent may be in its sole
discretion and may be given subject to such  additional  terms and conditions as
the Purchaser  shall  establish) and with respect to which all of the conditions
and  requirements  set forth in this  definition  and in Section 7(i), and in or
pursuant to any such  consent,  have been  satisfied or waived in writing by the
Purchaser; or (c) the acquisition of additional Capital Stock of Bright Personal
Communications Services, LLC.

     "Permitted Liens" has the meaning set forth in Section 9(c).

     "Permitted Senior Debt" has the meaning set forth in Section 9(b).

                                       9
<PAGE>

     "Person" means any corporation,  association,  joint venture,  partnership,
limited liability company, organization, business, individual, trust, government
or agency or political subdivision thereof or any other legal entity.

     "Plan"  means any  "employee  pension  benefit  plan" within the meaning of
Section  3(2) of ERISA that is subject  to the  provisions  of Title IV of ERISA
(other  than a  Multiemployer  Plan)  and to  which  the  Company  or any  ERISA
Affiliate may have any liability.

     "POPs" has the meaning set forth in Section 8(a).

     "Projections" has the meaning set forth in Section 5(m).

     "Purchaser"  has the meaning set forth in the Preamble  and its  successors
and assigns.

     "Related  Party" or "Related  Parties" means spouses,  lineal  ancestors or
descendants, natural or adopted, and spouses of lineal ancestors or descendants,
or trusts for the sole benefit of any of such Persons.

     "Required  Purchasers" means the holders of at least 51% of the outstanding
principal of the Note or Notes.

     "Requirement  of Law"  means,  with  respect to any  Person,  the  charter,
articles or certificate of incorporation, formation or organization, partnership
or  operating  agreements  and  bylaws  or  other  organizational  or  governing
documents of such Person, and any statute, law, treaty, rule, regulation, order,
decree,  writ,  injunction or  determination of any arbitrator or 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
or otherwise  pertaining to any or all of the transactions  contemplated by this
Agreement and the other Transaction Documents.

     "Responsible  Officer" means,  with respect to the Company,  the president,
the chief  executive  officer,  any other  executive  officer,  or any Financial
Officer  of the  Company,  and any other  officer or  similar  official  thereof
responsible for the  administration of the obligations of the Company in respect
of this Agreement.

     "Securities  Act" means the  Securities  Act of 1933,  as amended,  and the
rules and regulations of the Commission thereunder.

     "Subsidiary"  means,  with respect to any Person,  any corporation or other
Person of which more than 50% of the  outstanding  Capital Stock having ordinary
voting power to elect a majority of the board of directors, board of managers or
other  governing  body of such Person,  is at the time,  directly or indirectly,
owned or controlled by such Person and one or more of its other  Subsidiaries or
a combination thereof  (irrespective of whether, at the time,  securities of any
other class or classes of any such  corporation  or other  Person shall or might
have voting  power by reason of the  happening  of any  contingency).  When used
without reference to a parent entity,  the term "Subsidiary"  shall be deemed to
refer to a Subsidiary of the Company.

                                       10
<PAGE>

     "Subsidiary Guarantor" has the meaning set forth in Section 7(i).

     "Total Voting Power" means, with respect to any Person, the total number of
votes  which may be cast in the  election  of  directors  of such  Person at any
meeting of stockholders of such Person if all securities entitled to vote in the
election of directors  of such Person (on a fully  diluted  basis,  assuming the
exercise, conversion or exchange of all rights, warrants, options and securities
exercisable for,  exchangeable for or convertible into, such voting  securities)
were present and voted at such  meeting  (other than votes that may be cast only
upon the happening of a contingency).

     "Transaction  Documents"  means  this  Agreement,   the  Note,  the  Credit
Agreements,  the Acquisition  Documents,  the Conversion  Agreement,  the Letter
Agreement and all other  agreements,  exhibits,  documents and schedules related
thereto.

     "Voting Stock" means,  with respect to any Person,  Capital Stock issued by
such   Person  the  holders  of  which  are   ordinarily,   in  the  absence  of
contingencies,  entitled  to vote for the  election  of  directors  (or  persons
performing similar  functions) of such Person,  even though the right so to vote
has been suspended by the happening of such a contingency.

     "Wholly  Owned"  means,  with respect to any  Subsidiary of any Person (the
"parent"),  that 100% of the  outstanding  Capital  Stock of such  Subsidiary is
owned, directly or indirectly,  by such parent unless it is a Requirement of Law
that  any  third  Person  who is a member  of the  board  of  directors  (or any
equivalent body) holds shares of such Subsidiary's outstanding Capital Stock, in
which case, the percentage of shares of such  Subsidiary's  outstanding  Capital
Stock  that  does  not  have to be held as a  Requirement  of Law by such  board
member(s) is owned directly or indirectly, by such parent.

     (b) Accounting Terms; Financial Statements. Except as specifically provided
otherwise  in this  Agreement,  all  accounting  terms used  herein that are not
specifically   defined  shall  have  the  meanings  customarily  given  them  in
accordance  with  GAAP.   Notwithstanding  anything  to  the  contrary  in  this
Agreement,  for purposes of calculation of the financial  covenants set forth in
Section 8, all accounting  determinations  and  computations  hereunder shall be
made in  accordance  with  GAAP as in  effect  as of the date of this  Agreement
applied on a basis  consistent  with the basis used in preparing the most recent
Financial  Statements  of the Company  referred to in Section 5(m). In the event
that any  changes  in GAAP  after  such date are  required  to be applied to the
Company and would affect the computation of the financial covenants contained in
Section  8, such  changes  shall be  followed  only from and after the date this
Agreement shall have been amended to take into account any such changes.

SECTION 2. AUTHORIZATION OF ISSUANCE OF THE NOTE. The Company has authorized the
issuance to the Purchaser of the Company's senior subordinated promissory bridge
note in the original principal amount of $13,000,000,  in substantially the form
of Exhibit 2(a) (the "Note").

                                       11
<PAGE>

SECTION 3. PURCHASE AND SALE OF THE NOTE.

     (a) Subject to the terms and conditions  herein set forth,  and in reliance
upon the  representations  and warranties of the Company contained  herein,  the
Company shall sell to the Purchaser  and the Purchaser  shall  purchase from the
Company the Note for a purchase price of $13,000,000.

     (b) The  closing  of the  issuance,  purchase  and  sale of the  Note  (the
"Closing") shall take place at Moore & Van Allen,  PLLC on February 15, 2000, or
at such other time and place as may be  mutually  agreed  upon in writing by the
Company and the Purchaser;  provided, however, that the Closing shall take place
no later than  February 18, 2000. At the Closing,  the Company will issue,  sell
and deliver to the  Purchaser the Note in the amount set forth and the Purchaser
will  pay to the  Company  the  purchase  price  therefor  by wire  transfer  of
immediately  available funds pursuant to written  instructions  delivered to the
Purchaser by the Company prior to the Closing.

SECTION 4. CONDITIONS OF CLOSING.  The  Purchaser's  obligations to purchase and
pay for the Note at the Closing are subject to the Purchaser determining, in its
sole  discretion,  that the  following  conditions  have been  satisfied (or the
Purchaser waiving in writing the conditions that it has determined have not been
satisfied), on or before the Closing Date:

     (a)  Representations,  Warranties and Covenants.  The  representations  and
warranties  of the Company  contained  in Section 5 shall be true and correct at
and  as of  the  Closing  Date  with  the  same  force  and  effect  as if  such
representations  and  warranties  had  been  made  as of the  Closing  Date.  In
addition,  the Company  will have  performed  all  agreements,  obligations  and
covenants required herein to be performed by it on or prior to the Closing.

     (b) Inspection of Property and Business. The Company will have allowed, and
shall  have  caused  the  Parent  to  allow,  permitted  representatives  of the
Purchaser to visit and inspect its  properties,  to examine the  organizational,
business  and   financial   records  of  the  Company,   the  Parent  and  their
Subsidiaries,  and make copies thereof or extracts therefrom, and to discuss the
affairs, finances and accounts of the Company, the Parent and their Subsidiaries
with the directors,  managers,  officers,  shareholders,  members, partners, key
employees  and  independent  accountants  of the  Company,  the Parent and their
Subsidiaries;  provided,  however,  that the  Purchaser  agrees to hold all such
information confidential in accordance with Section 11(k).

     (c) Consent of Third Parties,  Governmental  Authorities,  etc. The Company
shall have  presented,  and shall have  caused the Parent to  present,  evidence
satisfactory  to the Purchaser to the effect that (i) all consents,  waivers and
amendments  required in connection  with the  consummation  of the  transactions
related  to  this  Agreement  and  the  other  Transaction   Documents  and  the
transactions contemplated hereby and thereby have been obtained (including,  but
not limited to, RTFC, the Ohio Public Utilities Commission and Sprint), (ii) the
transactions  related to the Subdebt  Investment and the  Acquisition  shall not
violate,  or  constitute  or trigger the  occurrence of an event of default with
respect to, any  Contractual  Obligations  of the Company,  the Parent or any of
their  Subsidiaries  and (iii) neither the Company,  the Parent nor any of their
Subsidiaries is in violation of or default under or with respect to any material
Contractual Obligations.

                                       12
<PAGE>

     (d) No Adverse Change.  Since December 31, 1998, no Material Adverse Change
shall have occurred or be anticipated in the condition (financial or otherwise),
properties, proposed business operations,  management,  potential competition or
any  other  matter  affecting  (including,   but  not  limited  to,  litigation,
proceedings,  bankruptcy, insolvency or other claims) the Company, the Parent or
any of their  Subsidiaries  or their  business  prospects,  which is or could be
materially adverse.

     (e) Financial Information.  The Company shall have provided, and shall have
caused the Parent to provide,  the  Purchaser  with such  financial  information
relative to the  Company's  and the Parent's  financial  condition  which may be
reasonably  requested by the Purchaser,  which information  shall include,  at a
minimum,  the financial  statements listed on Schedule 4(e)  (collectively,  the
"Financial Statements").

     (f) Certain  Agreements.  The following  agreements shall have been entered
into by the  appropriate  parties,  shall have been  delivered to the Purchaser,
shall be  satisfactory  in form and  substance to the  Purchaser and shall be in
full force and effect:

          (i)  Conversion  Agreement,  in  the  form  of  Exhibit  4(f)(i)  (the
     "Conversion Agreement"), between the Company, and the Purchaser; and

          (ii) the Acquisition  Documents,  in the form of Exhibit 4(f)(ii) (the
     "Acquisition Documents"), among the Company and Alltel Investments, Inc. of
     the other Acquisition Documents.

     (g) Opinions of Counsel.  The Purchaser shall have received (i) from Arnall
Golden & Gregory,  LLP, legal counsel for the Company, a favorable opinion as of
the Closing  Date,  substantially  in the form of Exhibit  4(g)(i) and (ii) from
Squire Sanders & Dempsey,  special counsel for the Company,  a favorable opinion
as of the Closing Date as to Ohio matters.

     (h) Delivery of Closing  Documents.  The Purchaser  shall have received the
following  closing  documents,   in  form  and  substance  satisfactory  to  the
Purchaser,  and all of which shall, except as specified below, be fully executed
originals:

          (i) this Agreement;

          (ii) the Note;

          (iii) a copy of the Credit Documents, certified by the secretary or an
     assistant secretary of the Company to be true, correct and complete;

          (iv) the Acquisition Documents;

          (v)  long  form   certificates  of  the  Secretary  of  State  of  the
     jurisdictions  of  incorporation,  formation or organization of the Company
     and each of its  Subsidiaries  as to the good  standing  of the Company and
     each of its  Subsidiaries  in such  jurisdictions  as of a date within five
     Business Days prior to the Closing Date;

                                       13
<PAGE>

          (vi)  certificates  of the Secretary of State of each  jurisdiction in
     which the Company and each of its Subsidiaries are qualified to do business
     as to their good  standing  in such  jurisdictions  and,  where  available,
     certificates of the relevant state taxing  authorities as to the payment by
     such Person of all taxes in such jurisdictions;

          (vii)  certificate,  dated  as of  the  Closing  Date,  of  the  chief
     executive officer and chief financial officer of the Company, substantially
     in the form of Exhibit 4(h)(vii),  stating that the conditions specified in
     Section 4 have been fully satisfied;

          (viii)  certificates,  dated as of the Closing Date,  substantially in
     the  form of  Exhibit  4(h)(viii),  of the  respective  secretaries  of the
     Company and each of its Subsidiaries  certifying (A) that the copies of the
     certificate or articles of  incorporation,  formation or  organization  and
     bylaws or other  organizational and governing  documents of the Company and
     each of its  Subsidiaries,  attached  thereto  and as amended to date,  are
     true,  complete and correct,  (B) that the copies of the resolutions of the
     directors,  managers,  partners,  members and  shareholders of the Company,
     authorizing the transactions contemplated by this Agreement and each of the
     Transaction  Documents  (including  the  issuance  of  the  Note)  and  the
     escrowing  of shares of Capital  Stock of the Parent  attached  thereto are
     true,  complete  and  correct,  (C) as to the  incumbency  of  each  Person
     executing this Agreement and each of the Transaction Documents on behalf of
     the  Company or any of its  Subsidiaries,  and (D) as to any other  matters
     reasonably requested by the Purchaser.

          (ix) copies of the consents,  waivers and amendments to be obtained by
     the Company  pursuant to the  provisions  of Section  4(e),  the  Financial
     Statements  to be  provided by the Company  pursuant to the  provisions  of
     Section 4(g) and the  insurance  policies to be  maintained  by the Company
     pursuant to the provisions of Section 7(g);

          (x)  certificate,  dated as of the Closing Date,  substantially in the
     form of Exhibit 4(h)(x), of the chief executive officer and chief financial
     officer of the Company and each of its  Subsidiaries  as to the solvency of
     such Person;

          (viii) to the extent not  provided  for  herein,  true,  complete  and
     correct copies of all Transaction Documents; and

          (ix) any and all other  documents,  certificates,  and  assurances
     which may be reasonably  requested by the Purchaser in connection  with its
     commitments as set forth herein.

     (i) Payment of Fees and  Expenses.  The Company  shall have paid at Closing
via wire transfer of immediately  available funds (i) all fees, if any, owing to
the  Purchaser  pursuant to the term sheet dated  February  14, 2000 between the
Company and the  Purchaser  and (ii) all expenses of the  Purchaser  pursuant to
Section 11(b), including attorneys' fees and expenses.

                                       14
<PAGE>

     (j)   Litigation.   There  shall  not  exist  any  pending   litigation  or
investigation  affecting or relating to the Company,  the Parent or any of their
Subsidiaries,  this  Agreement and the other  Transaction  Documents that in the
reasonable  judgment of the  Purchaser  could  materially  adversely  affect the
Company,  the  Parent or any of their  Subsidiaries  that has not been  settled,
dismissed, vacated, discharged or terminated prior to the Closing Date.

     (k)  Ownership  Structure.  The  capital  and  ownership  structure  of the
Company,  the  Parent  and  their  Subsidiaries  (after  giving  effect  to  the
Acquisition  and the  Transaction  Documents)  shall be as described in Schedule
5(b) and Schedule  5(c).  The Purchaser  shall be satisfied  with the management
structure, legal structure,  voting control, tax matters,  accounting practices,
liquidity,  total leverage and total  capitalization of the Company,  the Parent
and their Subsidiaries as of the Closing Date.

     (l) Bankruptcy. There shall be no bankruptcy or insolvency proceedings with
respect to the Company, the Parent or any of their Subsidiaries.

     (m) Legality of Offering. On the Closing Date, the sale and issuance of the
Note shall be legally permitted by all laws and regulations to which each of the
Purchaser and the Company are subject.

     (n) Financial Covenants. The covenants contained in Section 8 shall be true
and correct as of Closing Date after giving effect to the Acquisition,  the sale
of the Note and the borrowings under the Credit Agreements.

     (o) Additional Matters. All other documents and legal matters in connection
with  the  transactions  contemplated  by this  Agreement  shall  be  reasonably
satisfactory in form and substance to the Purchaser and its counsel.

SECTION 5. REPRESENTATIONS AND WARRANTIES OF THE COMPANY. In order to induce the
Purchaser  to enter into this  Agreement,  the  Company  hereby  represents  and
warrants  to  the  Purchaser  that,  before  and  after  giving  effect  to  the
Acquisition  and the other  transactions  contemplated by this Agreement and the
other Transaction Documents, as of the date hereof:

     (a) Organization, Good Standing and Qualification.  Each of the Company and
the Parent is a  corporation  duly  incorporated,  validly  existing and in good
standing  under  the  laws  of  Ohio.  As  applicable,  each  of  the  Company's
Subsidiaries has all required  corporate power and authority to own its property
and to carry on its business as presently conducted. The Company, the Parent and
each of its Subsidiaries are qualified and authorized to do business in, and are
in good standing as foreign  corporations  in, all other  jurisdictions in which
such  qualification  or  authorization  is  necessary  for  the  conduct  of the
businesses in which the Company,  the Parent and each of their  Subsidiaries are
now  engaged,  except  where the  failure  to be so  qualified  would not have a
Material  Adverse  Effect.  Schedule  5(a)  lists  with  respect  to each of the
Company,   the  Parent  and  their   Subsidiaries   (i)  its   jurisdiction   of
incorporation,  formation  or  organization,  (ii)  all  states  in  which it is
qualified  to do business  and (iii) all  licenses  and permits of  Governmental
Authorities  held by it.  Neither  the  Company,  the  Parent  nor any of  their

                                       15
<PAGE>

Subsidiaries  owns or leases property or have employees in any state in which it
is not  qualified to do  business.  The  licenses,  permits and other rights and
privileges listed on Schedule 5(a) constitute all the material licenses, permits
and other rights and privileges required for each of the Company, the Parent and
their  Subsidiaries to carry on its business as now conducted and as proposed to
be conducted.

     (b) Subsidiaries and Investments. Neither the Company, the Parent nor their
Subsidiaries  has any  Subsidiaries,  other  than  the  Subsidiaries  listed  on
Schedule 5(b). Except for such Subsidiaries listed on Schedule 5(b), neither the
Company,  the Parent nor their  Subsidiaries (i) owns or controls any securities
or owns other  investments  in any Person or (ii) is a participant  in any joint
venture, partnership or similar arrangement.

     (c) Authorized and Issued  Capital.  The authorized  capitalization  of the
Company,  the Parent  and each of their  Subsidiaries  is set forth on  Schedule
5(c).  Except as set forth on Schedule 5(c), the Company and the Parent have not
issued  any other  shares  of their  Capital  Stock  and  there  are no  further
subscriptions, contracts or agreements for the issuance or purchase of any other
or  additional  equity  interest  in the  Company,  the  Parent  or any of their
Subsidiaries,  either  in the  form of  options,  agreements,  warrants,  calls,
convertible  securities or other similar rights.  All the outstanding  shares of
Capital  Stock have been duly and  validly  authorized  and issued and are fully
paid and nonassessable and will have been offered, issued, sold and delivered in
compliance  with  applicable  federal and state  securities  laws.  Set forth on
Schedule  5(c) is a listing  of all  directors,  managers,  officers,  partners,
members  and  shareholders  (including  the  number of  shares of each  class or
percentage  partnership interest, as the case may be, owned by each such Person)
of the Company,  the Parent and each of their Subsidiaries and of the holders of
all outstanding options, agreements, warrants, calls, convertible securities and
other rights relating to the issuance of equity  securities of, or interests in,
the Company,  the Parent and each of their Subsidiaries.  Except as set forth on
Schedule 5(c), neither the Company,  the Parent nor any of their Subsidiaries is
a party to any "phantom stock",  employee stock option plan, other  equity-based
incentive plan or similar  agreement.  Except as set forth on Schedule 5(c), (i)
there are no  preemptive  or similar  rights to  purchase or  otherwise  acquire
equity  securities of, or interests in, the Company,  the Parent or any of their
Subsidiaries  pursuant  to any  Requirement  of Law  or  Contractual  Obligation
applicable to the Company,  the Parent or any of their  Subsidiaries and (ii) no
registration  rights under the  Securities Act have been granted by the Company,
the Parent or any of their Subsidiaries with respect to its equity securities or
interests.

     (d)  Authorization.  The  execution  and  delivery  by the  Company of this
Agreement and each Transaction  Document to which it is a party, the performance
by  the  Company  and  its  Subsidiaries  of  their  obligations  hereunder  and
thereunder,  and the issuance to the Purchaser of the Note, as herein  provided,
have been duly authorized by all necessary  corporate  action of the Company and
its Subsidiaries and the board of directors and shareholders, as appropriate, so
that when issued and delivered (i) the Note will constitute the legal, valid and
binding  obligation of the Company,  enforceable  in accordance  with its terms,
except as enforceability  may be limited by applicable  bankruptcy,  insolvency,
reorganization,  arrangement, moratorium, fraudulent conveyance or other similar
law of  general  applicability  relating  to or  affecting  the  enforcement  of

                                       16
<PAGE>

creditors'  rights  generally  or by  general  equitable  principles;  (ii) this
Agreement  and each of the  Transaction  Documents  to which it is a party  will
constitute the legal, valid and binding  agreements of the Company,  enforceable
against it in accordance with their respective  terms,  except as enforceability
may  be   limited  by   applicable   bankruptcy,   insolvency,   reorganization,
arrangement,  moratorium,  fraudulent conveyance or other similar law of general
applicability  relating to or affecting the  enforcement  of  creditors'  rights
generally or by general equitable principles; and (iv) neither the execution and
delivery of this Agreement and each of the  Transaction  Documents to which they
are a  party,  and  the  performance  by  the  Company,  the  Parent  and  their
Subsidiaries of their obligations hereunder and thereunder,  nor the issuance of
the Note, will be in  contravention  of any Requirement of Law applicable to the
Company,  the Parent or any of their Subsidiaries or any Contractual  Obligation
to which the Company or any of its Subsidiaries may be subject.

     (e)  Litigation.  Except  as  set  forth  on  Schedule  5(e),  there  is no
litigation  or  governmental  proceeding  or  investigation  pending  or, to the
knowledge  of the Company,  threatened  against or  affecting  the Company,  the
Parent  or any of  their  Subsidiaries,  or any of  their  respective  officers,
directors,  managers,  partners,  members or  shareholders,  which  involves the
possibility  of any  judgment or liability  which might have a Material  Adverse
Effect on the right of the Company,  the Parent or any of their  Subsidiaries to
conduct  their  respective  businesses  as now  conducted  or as  proposed to be
conducted.

     (f) Tax Matters. Each of the Company, the Parent and their Subsidiaries has
timely filed all federal, state and local tax returns and reports required to be
filed by it and has paid all taxes,  assessments,  fees and other charges levied
upon its properties that are shown thereon as due and payable,  other than those
that are being  consented in good faith and by proper  proceedings and for which
adequate  reserves have been  established in accordance  with GAAP. Such returns
accurately  reflect in all  material  respects  all  liability  for taxes of the
Company,  the Parent and their Subsidiaries for the periods covered thereby.  As
of the  Closing  Date and  except as set  forth on  Schedule  5(f),  there is no
ongoing  audit  or  examination  or,  to the  knowledge  of the  Company,  other
investigation by any Governmental Authority of the tax liability of the Company,
the Parent or any such  Subsidiaries,  and there is no  unresolved  claim by any
Governmental  Authority  concerning the tax liability of the Company, the Parent
or any such  Subsidiaries for any period for which tax returns have been or were
required  to have been filed,  other than  unsecured  claims for which  adequate
reserves have been  established in accordance with GAAP. As of the Closing Date,
the Company, the Parent or their Subsidiaries have not waived or extended or has
not been requested to waive or extend the statute of limitations relating to the
payment of any taxes.

     (g) Organizational and Governing Documents. The certificates or articles of
incorporation,  formation or organization,  partnership or operating  agreements
and bylaws of the Company,  the Parent and each of their Subsidiaries  furnished
to the Purchaser pursuant to Section 4(h) are in full force and effect,  without
further changes, amendments or modification.

     (h) Government Approvals;  Consents.  Except as set forth on Schedule 5(h),
the  Company  and the Parent  are not  required  to obtain  any order,  consent,
approval  or  authorization  of, or make any  declaration  or filing  with,  any
Governmental  Authority or other Person in connection with (i) the  negotiation,

                                       17
<PAGE>

execution,  delivery  and  performance  of this  Agreement  or any of the  other
Transaction  Documents,  (ii) the  offer,  issuance,  sale and  delivery  to the
Purchaser  of the Note,  or (iii)  the  consummation  of any  other  transaction
contemplated by this Agreement or any of the Transaction Documents.

     (i) Representations and Warranties in Other Agreements. The representations
and warranties made by the Company,  the Parent and their  Subsidiaries,  in the
Credit Agreements,  the Acquisition Documents, the Transaction Documents, and in
any other agreements,  instruments or certificates  delivered pursuant hereto or
thereto,  are true and correct in all material  respects  (except where any such
representation  and warranty is stated as being true only as of a specific date,
in which  case such  representation  and  warranty  was true and  correct in all
material respects on such date).

     (j)  Disclosure.  Neither  this  Agreement,  any of the  other  Transaction
Documents,  nor any other  written  statement  or  materials  furnished by or on
behalf of the  Company,  the Parent or their  Subsidiaries  to the  Purchaser in
connection  with  this  Agreement  and  the  transactions  contemplated  hereby,
contains  any  untrue  statement  of any  material  fact,  or omits to state any
material fact that is necessary in order to make the statements contained herein
or  therein,  in the light of the  circumstances  under  which  they were  made,
complete and not  misleading.  There exists no undisclosed  fact or circumstance
which,  to the  knowledge of Company,  the Parent or any of their  Subsidiaries,
would reasonably be likely to result in a Material Adverse Effect.

     (k)  Compliance  with  Securities  Laws.   Assuming  the  accuracy  of  the
representations  and warranties of the Purchaser  contained in Section 6 hereof,
the offer and sale of the Note and the Capital  Stock  acquired  pursuant to the
Acquisition  Documents,  are  not  required  to be  registered  pursuant  to the
provisions  of Section 5 of the  Securities  Act or any state  securities  laws.
Neither the Company nor any agent on its behalf has  solicited  or will  solicit
any offers to sell or has  offered to sell or will offer to sell all or any part
of the Note,  and the Capital Stock to be acquired  pursuant to the  Acquisition
Documents,  to any Person so as to bring the sale of Note, and the Capital Stock
to be acquired pursuant to the Acquisition Documents,  by the Company within the
registration  provisions of the Securities Act or any state securities laws. All
prior  offerings and sales of  securities  of the Company,  the Parent and their
Subsidiaries were in compliance with all applicable federal and state securities
laws.

     (l) No  Brokers.  The  Company  has not  dealt  with  any  broker,  finder,
commission  agent or other similar Person in connection  with the offer and sale
of the Note by the Company to the Purchaser or the transactions  contemplated by
this Agreement,  and the Company is not under any obligation to pay any broker's
fee, finder's fee or commission in connection with such transactions.

     (m) Financial Statements.

          (i) The audited Financial  Statements,  complete and correct copies of
     which have  previously  been  furnished  to the  Purchaser  by the Company,
     present  fairly  and  accurately  the  financial   condition,   results  of
     operations  and  changes  in  financial  position  of  the  Company  and it
     Subsidiaries in accordance with GAAP, consistently applied, as of the dates

                                       18
<PAGE>

     and for the periods set forth therein. The unaudited Financial  Statements,
     complete and correct copies of which have  previously been furnished to the
     Purchaser by the  Company,  present  fairly and  accurately  the  financial
     condition and results of operations of the Company and its  Subsidiaries as
     of the dates and for the periods set forth therein,  subject to the lack of
     footnote disclosure and changes resulting from normal year-end adjustments,
     none of which,  alone or in the  aggregate,  would have a Material  Adverse
     Effect. Since December 31, 1998 there has been no Material Adverse Change.

          (ii) As an inducement  to the  Purchaser to enter into this  Agreement
     and the other Transaction Documents,  the Company has caused to be provided
     to  the   Purchaser   the   projections   listed  on  Schedule   4(e)  (the
     "Projections") prepared by the Company. The Company represents and warrants
     that, after a good faith review of information currently available: (A) the
     assumptions underlying the Projections are reasonable;  (B) the Projections
     are  based  upon good  faith  and  diligent  estimates  of the  anticipated
     operating  results and consummation of the Subdebt  Investment;  and (C) no
     event has  occurred  and no  circumstance  has arisen since the date of the
     Projections   which  would  render  the   Projections  or  the  assumptions
     underlying the Projections misleading or no longer reasonable.

     (n) Absence of Undisclosed Liabilities. Neither the Company, the Parent nor
any of their  Subsidiaries  has any material  obligation  or liability  (whether
accrued, absolute,  contingent,  unliquidated or otherwise, whether or not known
to the Company,  whether due or to become due and regardless of when  asserted),
other than (i) liabilities set forth on the Latest Balance Sheet  (including any
notes thereto),  (ii)  liabilities  and obligations  which have arisen after the
date of the Latest Balance Sheet in the ordinary course of business and which do
not  individually  or in the aggregate have a Material  Adverse Effect and (iii)
obligations  expressly disclosed in the other schedules and exhibits attached to
this Agreement.

     (o) Title To  Properties  and Assets.  Each of the Company,  the Parent and
each of their  Subsidiaries  has good and marketable title in fee simple (or its
equivalent  under  applicable law) to all real property owned by it. Each of the
Company,  the Parent and each of their Subsidiaries has good and valid title to,
or a valid  leasehold  interest in, all other  properties and assets used by it,
located  on its  premises  or  shown on the  Latest  Balance  Sheet or  acquired
thereafter,  free and clear of all  Liens,  other  than for (i)  properties  and
assets  disposed of in the  ordinary  course of  business  since the date of the
Latest  Balance  Sheet,  (ii)  Liens  disclosed  on  the  Latest  Balance  Sheet
(including  the  notes  thereto)  or  (iii)  Permitted  Liens.  All  facilities,
machinery,  equipment,  fixtures, vehicles and other properties owned, leased or
used  by the  Company,  the  Parent  or any of  their  Subsidiaries  are in good
operating  condition  and  repair  and are  reasonably  fit and  usable  for the
purposes for which they are being used. Neither the Company,  the Parent nor any
Subsidiary is in violation of any material zoning, building or safety ordinance,
regulation or requirement or other law or regulation applicable to the operation
of its owned or leased  properties.  The Affiliates of the Company do not own or
lease any  properties or assets that are used by the Company,  the Parent or any
of their Subsidiaries except as set forth on Schedule 5(s).

     (p) Contracts and Commitments. Schedule 5(p) lists, as of the Closing Date,
each  "material  contract"  (within  the  meaning  of  Item  601(b)(10)  of  the
Regulation  S-K under the Exchange Act) to which either the Company,  the Parent
or any of  their  Subsidiaries  is a party,  by  which  it or  their  respective

                                       19
<PAGE>

properties  is  bound or to which it is  subject  (collectively,  the  "Material
Contracts"), and also indicates the parties thereto. As of the Closing Date, (i)
to the  knowledge of the Company,  each  Material  Contract is in full force and
effect and is enforceable by the Company, the Parent or their Subsidiary that is
a party thereto in accordance  with its terms and (ii) neither the Company,  the
Parent nor any of their Subsidiaries (nor, to the knowledge of the Company,  any
other party  thereto) is in breach of or default under any Material  Contract in
any material  respect or has given notice of termination or  cancellation of any
Material Contract.

     (q)  Employees.  Set  forth  on  Schedule  5(q) is a  complete  list of all
employment   agreements  between  the  Company,  the  Parent  or  any  of  their
Subsidiaries  and any  employee  of the  Company,  the  Parent  or any of  their
Subsidiaries, respectively. Except as set forth on Schedule 5(q), the Company is
not aware that any  executive or key employee of the Company,  the Parent or any
of their  Subsidiaries  or any group of employees of the Company,  the Parent or
any of  their  Subsidiaries  has any  plans  to  terminate  employment  with the
Company, the Parent or any of their Subsidiaries.  With respect to employees who
are  terminating  their  employment,  Schedule  5(q) provides a true and correct
summary of all severance  benefits being provided by the Company,  the Parent or
any of their Subsidiaries to such employees. Neither the Company, the Parent nor
any of their  Subsidiaries  nor, to the Company's best knowledge,  any of its or
their employees, is subject to any noncompete,  nondisclosure,  confidentiality,
employment,  consulting, collective bargaining or similar agreement relating to,
affecting or in conflict  with, the present or proposed  business  activities of
the Company,  the Parent or any of their Subsidiaries or any such Person's right
to  participate  in the  affairs  of the  Company,  the  Parent  or any of their
Subsidiaries.

     (r) Compliance with Laws. Neither the Company,  the Parent nor any of their
Subsidiaries  has  violated  any  Requirement  of  Law,  which  violation  would
reasonably  be  expected  to have a Material  Adverse  Effect,  and  neither the
Company,  the Parent nor any of their  Subsidiaries  has received  notice of any
such violation.

     (s)  Transactions  with  Affiliates.  Except as set forth on Schedule 5(s),
there are no Contractual  Obligations of the Company, the Parent or any of their
Subsidiaries to any of the officers, directors, managers, shareholders, members,
employees, Affiliates or their respective Affiliates, or Related Parties, of the
Company,  the Parent or any of their  Subsidiaries other than (i) for payment of
salary  for  services  rendered,  (ii)  reimbursement  for  reasonable  expenses
incurred on behalf of the Company,  the Parent or their Subsidiaries,  (iii) for
standard  employee  benefits  made  generally  available to all employees of the
Company  (including stock option  agreements  outstanding under any stock option
plan approved by the Board of Directors of the Company) and (iv) pursuant to any
of the  Transaction  Documents.  None  of  the  officers,  directors,  managers,
shareholders,  members, employees, Affiliates, or their respective Affiliates or
Related  Parties,  of the Company,  the Parent or any of their  Subsidiaries has
incurred  Indebtedness  to the Company or has any direct or  indirect  ownership
interest in any Person with which the Company is affiliated or, to the Company's
best knowledge,  with which the Company, the Parent or any of their Subsidiaries
has a business  relationship  except  that such Person may own stock in publicly

                                       20
<PAGE>

traded  companies.  Other  than as set  forth  on  Schedule  5(s),  no  officer,
director,  manager,  shareholder,  member, employee,  Affiliate, or any of their
respective  Affiliates or Related Parties, of the Company,  the Parent or any of
their  Subsidiaries,  is,  directly or  indirectly,  interested  in any material
Contractual Obligation with the Company. Except as may be expressly disclosed in
notes to the Financial Statements,  the Company is not a guarantor or indemnitor
of any Indebtedness of any other Person.

     (t) Hazardous  and Toxic  Materials.  There has been no  complaint,  order,
citation  or notice  with  regard to air  emissions,  Hazardous  Discharges  (as
defined below) or other environmental, health or safety matters affecting any of
the premises  owned or leased by the Company or any of its  Subsidiaries  or the
businesses therein  conducted.  There has been no spill,  discharge,  release or
cleanup of any Hazardous  Material with respect to such premises (except spills,
discharges  or releases in the  ordinary  course of business  and  permitted  by
applicable Environmental Law (as defined below)) ("Hazardous  Discharge"),  and,
accordingly,  such properties are clean of all such Hazardous Materials.  To the
extent the premises  owned or leased by the Company,  the Parent or any of their
Subsidiaries are used for the handling,  storage,  transportation or disposal of
Hazardous Materials, such use is in accordance with applicable Environmental Law
and the Company,  the Parent and their  Subsidiaries  has obtained all necessary
permits, licenses and approvals in connection with applicable Environmental Law.
Except as set forth on Schedule  5(t), no underground  or  above-ground  storage
tanks or surface impoundments are located on any of the premises owned or leased
by the  Company,  the  Parent  or any of  their  Subsidiaries.  As  used  herein
"Hazardous Materials" means (A) any petroleum or petroleum products, radioactive
materials,  asbestos  in  any  form  that  is  or  could  become  friable,  urea
formaldehyde  foam  insulation,  transformers  or other  equipment  that contain
dielectric fluid containing levels of polychlorinated  biphenyls, and radon gas;
(B) any chemicals, materials or substances (including, without limitation, human
blood and blood products,  pathological wastes, sharps, body parts, contaminated
bedding,  surgical wastes and other  disposable  medical  equipment and material
that may pose a risk to the public  health,  welfare or the marine  environment)
defined as or included in the definition of "hazardous  substances",  "hazardous
wastes", "hazardous materials",  "extremely hazardous wastes", "medical wastes",
"biological wastes",  "laboratory wastes", "restricted hazardous wastes", "toxic
substances",  "toxic  pollutants",  "contaminants" or "pollutants",  or words of
similar  import,  under  any  applicable  Environmental  Law;  and (C) any other
chemical,  material or  substance  exposure to which is  prohibited,  limited or
regulated by any Governmental Authority.  "Environmental Law" means any federal,
state or local statute, law, rule, regulation,  ordinance,  code, policy or rule
of common law now or  hereafter  in effect and in each case as amended,  and any
judicial or  administrative  interpretation  thereof,  including any judicial or
administrative  order, consent decree or judgment,  relating to the environment,
health,  safety or  Hazardous  Materials,  including,  without  limitation,  the
Comprehensive Environmental Response, Compensation and Liability Act of 1980, as
amended,  42 U.S.C.  ss.  9601 et seq.;  the  Marine  Protection,  Research  and
Sanctuaries  Act of 1972, as amended,  33 U.S.C.  ss. 1401 et seq.; the Resource
Conservation  and  Recovery  Act, as amended,  42 U.S.C.  ss. 6901 et seq.;  the
Federal Water Pollution Control Act, as amended, 33 U.S.C. ss. 1251 et seq.; the
Toxic Substances  Control Act, 15 U.S.C. ss. 2601 et seq.; the Clean Air Act, 42
U.S.C.  ss. 7401 et seq.;  the Safe Drinking Water Act, 42 U.S.C.  ss.ss.  201 &
300f et seq.; the Occupational Safety and Health Act, 29 U.S.C. ss. 651 et seq.;
and their  counterparts  under applicable  state and local laws.  "Environmental
Claims" means any and all administrative, regulatory or judicial actions, suits,
demands, demand letters,  claims, liens, notices of non-compliance or violation,
investigations  or proceedings  relating in any way to any  Environmental Law or
any permit issued under any such Environmental Law, including without limitation
(x) any and all Environmental  Claims by governmental or regulatory  authorities

                                       21
<PAGE>

for  enforcement,  cleanup,  removal,  response,  remedial  or other  actions or
damages,  fines or penalties  pursuant to any applicable  Environmental Law, and
(y) any  and all  Environmental  Claims  by any  third  party  seeking  damages,
contribution,  indemnification, cost recovery, compensation or injunctive relief
resulting from  Hazardous  Materials or arising from alleged injury or threat of
injury to health, safety or the environment.

     (u)  Solvency.  After  giving  effect  to the  Acquisition  and  the  other
transactions contemplated by this Agreement and the other Transaction Documents,
(i) the fair  value  of the  Company's  assets  exceeds  the  book  value of the
Company's  liabilities,  (ii) the Company is generally  able to pay its debts as
they become due and payable  and (iii) the  Company  does not have  unreasonably
small capital to carry on its business as it is currently conducted.

     (v) Certain Federal  Regulations.  Neither the Company,  the Parent nor any
Person  controlling,  controlled by or under common  control with the Company or
the  Parent is an  "investment  company"  within the  meaning of the  Investment
Company  Act of  1940,  as  amended.  The  Company  and  the  Parent  are not an
"affiliated  person"  of, or  "promoter"  or  "principal  underwriter"  for,  an
"investment company," as such terms are defined under the Investment Company Act
of 1940,  as amended.  The Company is not engaged  principally  or as one of its
activities in the business of extending  credit for the purpose of  "purchasing"
or  "carrying"  any  "margin  stock"  (as each such term is  defined  or used in
Regulations G and U of the Board of Governors of the Federal Reserve System). No
part of the proceeds of the Note will be used for purchasing or carrying  margin
stock or for any purpose which violates,  or which would be  inconsistent  with,
the provisions of Regulations G, T, U or X of such Board of Governors.

     (w) Acquisition and Credit Documents.  The Acquisition Documents and Credit
Documents  delivered to the  Purchaser  pursuant to Section 4(h) comprise a full
and complete copy of all agreements  between the parties thereto with respect to
the subject matter thereof and all transactions  related thereto,  and there are
no  agreements  or  understandings,  oral or  written,  or side  agreements  not
contained therein that relate to or modify the substance thereof.

     (x) Use of  Proceeds.  The  proceeds  from the issuance of the Note will be
used for the purposes  set forth on Schedule  5(x) and, in  furtherance  of such
purposes,  shall be disbursed  to the Persons  (including,  without  limitation,
Subsidiaries  of the Company)  listed on such  Schedule  5(x) in the amounts set
forth opposite their respective names.

     (y)  Employee  Benefit  Plans.  Except as set forth in Schedule  5(y),  the
Company and the Parent do not maintain or  contribute  to any  employee  benefit
plan, stock option,  bonus or incentive plan, severance pay policy or agreement,
deferred compensation agreement,  or any similar plan or agreement.  Each of the
Company and its ERISA Affiliates is in compliance in all material  respects with
the  applicable   provisions  of  ERISA  and  the   regulations   and  published
interpretations  thereunder. No ERISA Event has occurred as to which the Company
or any ERISA  Affiliate  was  required to file a report  with the PBGC,  and the
present  value of all  benefit  liabilities  under  each  Plan  (based  on those
assumptions  used to fund such Plan) did not,  as of the last  annual  valuation
date  applicable  thereto,  exceed  the value of the  assets of such  Plan.  The
Company  and its  ERISA  Affiliates  are not  required  to make,  or  accrue  an

                                       22
<PAGE>

obligation to make, contributions to any Multiemployer Plan and, during the past
five  years,  neither the Company  nor any ERISA  Affiliate  has made,  has been
required to make,  or accrued an  obligation to make,  any  contribution  to any
Multiemployer  Plan.  There are no  unfunded  obligations  of the Company or the
Parent under any retirement, pension, profit-sharing, deferred compensation plan
or similar program.

     (z) Intellectual Property.

          (i)  Schedule  5(z) sets  forth a  complete  and  correct  list of all
     Intellectual  Property  that is owned by the Company,  the Parent and their
     Subsidiaries (the "Owned Intellectual  Property").  To the knowledge of the
     Company,  the Owned  Intellectual  Property  constitutes  all  Intellectual
     Property  used by, and  necessary  for the conduct of the  business of, the
     Company, the Parent and their Subsidiaries. The Owned Intellectual Property
     does not  infringe  the  rights  of any  other  Person  in  respect  of any
     Intellectual Property, and none of the Owned Intellectual Property is being
     infringed in any material respect by any other Person.  To the knowledge of
     the  Company,  neither the Company nor the Parent nor any of the  Company's
     nor the Parent's  employees or consultants  nor any of the  Subsidiaries or
     any of their  employees or consultants  has any agreements or  arrangements
     with former  employers  of such  employees or  consultants  relating to any
     Intellectual  Property of such employers,  which interfere or conflict with
     the performance of such employee's or consultant's  duties for the Company,
     the Parent or such  Subsidiary  or results in any former  employers of such
     employees  and  consultants  having  any rights in, or claims on, the Owned
     Intellectual  Property.  To the knowledge of the Company, the activities of
     the Company's or the Parent's  employees and  consultants and the employees
     and consultants of each Subsidiary on behalf of the Company,  the Parent or
     such  Subsidiary do not violate any  agreements or  arrangements  which any
     such employees have with former employers. Each current and former employee
     of the  Company,  the  Parent  and  their  Subsidiaries,  and  each  of the
     Company's, the Parent's and their Subsidiaries' consultants has executed an
     agreement regarding confidentiality and proprietary information and, to the
     knowledge of the Company,  none of such  employees and  consultants  are in
     violation of such  agreements.  Schedule 5(z) lists all Owned  Intellectual
     Property which has been duly registered with, filed in or issued by, as the
     case may be,  the United  States  Patent  and  Trademark  Office and United
     States Copyright Office or other filing offices,  domestic or foreign,  and
     identifies  the  office  with  which  such  filing  was  made.  Each  Owned
     Intellectual Property registration and filing listed in Schedule 5(z) is in
     full force and effect.

          (ii)  Schedule  5(z) sets forth a  complete  and  correct  list of all
     material  Contractual  Obligations  (A)  pursuant  to which  the use by any
     Person of  Intellectual  Property is licensed or  permitted by the Company,
     the Parent or any of their  Subsidiaries  and (B) pursuant to which the use
     by the Company,  the Parent or any of their  Subsidiaries  of  Intellectual
     Property is licensed or permitted by any other  Person  (collectively,  the
     "Intellectual  Property Licenses").  All Intellectual Property Licenses (A)
     are in full force and effect in  accordance  with their terms,  and (B) are
     free and clear of any Liens  (other  than  Permitted  Liens).  Neither  the
     Company,  the Parent nor any of their  Subsidiaries  nor, to the  Company's
     best knowledge, any of the other Parties thereto is in default under any of

                                       23
<PAGE>

     the  Intellectual  Property  Licenses,  and no such  default  is  currently
     threatened. There is no claim or demand of any Person pertaining to, or any
     proceeding  which is  pending  or, to the best  knowledge  of the  Company,
     threatened, that challenges the rights of the Company, the Parent or any of
     their  Subsidiaries  in  respect  of  any  Intellectual   Property,   Owned
     Intellectual Property or any of the Intellectual Property Licenses. None of
     the Owned Intellectual  Property or any Intellectual  Property Licenses are
     subject to any outstanding order, ruling,  decree,  judgment or stipulation
     by or with any court, tribunal, arbitrator or other Governmental Authority.
     The Company has taken commercially reasonable steps to maintain and protect
     its  trade  secrets.  To the  Company's  knowledge,  any  Person  licensing
     Intellectual   Property  from  the  Company  has  taken  all   commercially
     reasonable steps to maintain and protect the Intellectual Property which is
     subject to such license.

     (aa) Absence of Certain Changes or Events.  Except as set forth in Schedule
5(aa),  since the date of the Latest Balance Sheet, the Company,  the Parent and
each of their  Subsidiaries  has  conducted  its  business  only in the ordinary
course consistent with its past practices,  and neither the Company,  the Parent
nor  any  of  their   Subsidiaries  has  (i)  incurred,   or  agreed  to  incur,
Indebtedness,  (ii)  experienced  any damage,  destruction  or loss that, to the
extent not covered by insurance, has had or reasonably would be expected to have
a Material  Adverse Effect,  (iii)  declared,  set aside or paid any dividend or
other distribution  (whether in cash, equity securities,  interests or property)
in respect of its equity securities,  (iv) entered into any material Contractual
Obligation  involving  any  director,  officer,  manager,  shareholder,  member,
employee,  Affiliate or their  respective  Affiliates or Related  Parties of the
Company,  the Parent or any of their  Subsidiaries,  (v) granted or committed to
grant to any director,  officer,  manager,  member, employee or Affiliate of the
Company,  the  Parent or any of their  Subsidiaries  any  material  increase  in
compensation  or benefits,  (vi) granted or committed to grant to any  director,
officer,  manager,  employee or Affiliate  of the Company,  the Parent or any of
their  Subsidiaries  any increase in or right to severance or termination pay or
any other  compensation or benefits payable upon a change in control of any such
entity or (vii) taken any action  that,  if taken after the Closing Date hereof,
reasonably  would be expected to constitute a breach of any of the covenants set
forth in Section 7.

     (bb)  Insurance.  Schedule 5(bb) sets forth a true and complete  summary of
all insurance  policies or arrangements  carried or maintained by the Company as
of the  Closing  Date,  indicating  in each  case the  insurer,  policy  number,
expiration,  amount and type of coverage and deductibles. The assets, properties
and  business  of the  Company,  the Parent and their  Subsidiaries  are insured
against such hazards and liabilities,  under such coverages and in such amounts,
as are customarily  maintained by prudent companies similarly situated and under
policies issued by insurers of recognized responsibility.

SECTION 6.  REPRESENTATIONS  AND  WARRANTIES  OF THE  PURCHASER.  The  Purchaser
represents and warrants to the Company as follows:

     (a) It is an  "accredited  investor" as that term is defined in Rule 501 of
the Securities Act, and that, in making the purchases contemplated herein, it is
specifically  understood and agreed that the Purchaser is acquiring the Note for
the purpose of investment  and not with a view towards the sale or  distribution

                                       24
<PAGE>

thereof within the meaning of the Securities Act;  provided,  however,  that the
disposition of the Purchaser's  property shall at all times be and remain within
its control.

     (b) It  understands  that  the  Note  will  not  be  registered  under  the
Securities  Act, by reason of their  issuance  by the  Company in a  transaction
exempt from the  registration  requirements  of the Securities  Act, and that it
must hold the Note  indefinitely  unless a  subsequent  disposition  thereof  is
registered  under the Securities Act and applicable  state securities laws or is
exempt from registration.

     (c) It understands  that the exemption from  registration  afforded by Rule
144 (the  provisions  of which are known to the  Purchaser)  promulgated  by the
Commission  under the  Securities  Act  depends on the  satisfaction  of various
conditions,  including the requirement  that the Company has been subject to the
reporting  requirements  of Section 13 or Section 15 of the  Exchange Act for at
least 90 days,  and that,  if  applicable,  Rule 144 affords the basis for sales
only in limited amounts and that the Company does not now qualify under Rule 144
and may not ever qualify.

     (d) It has not  employed  any  broker  or  finder  in  connection  with the
transactions contemplated by this Agreement.

     (e) It has been furnished with or has had access to the  information it has
requested  from the Company and the Parent and has had an opportunity to discuss
with the  management  of the Company and the Parent the business  and  financial
affairs of the Company,  the Parent and their  Subsidiaries,  and has  generally
such knowledge and experience in business and financial matters and with respect
to  investments  in securities or privately held companies so as to enable it to
understand  and evaluate  the risks of such  investment  and form an  investment
decision with respect thereto; provided, however, that the foregoing shall in no
way affect, diminish or derogate from the representations and warranties made by
the Company  hereunder or the right of the Purchaser to rely thereon and to seek
indemnification hereunder.

     (f) The execution and delivery of this Agreement and the other  Transaction
Documents  to which it is a party  have been duly  authorized  by all  necessary
action of the  Purchaser,  do not conflict  with or result in a breach of any of
the  Purchaser's  governing  documents  or  any  Contractual  Obligation  or any
Requirement of Law and  constitute  legal,  valid and binding  agreements of the
Purchaser  enforceable  against it in  accordance  with their  respective  terms
except as enforceability  may be limited by applicable  bankruptcy,  insolvency,
reorganization,  arrangement, moratorium, fraudulent conveyance or other similar
laws of general  applicability  relating  to or  affecting  the  enforcement  of
creditors' rights generally or by general equitable principles.

SECTION 7. COVENANTS.  The Company covenants and agrees,  that until the payment
in full  of all  principal  and  interest  under  the  Note  together  with  all
Obligations  and all  amounts  then due and owing  under  the other  Transaction
Documents:

                                       25
<PAGE>

     (a)  Payment  of  Notes.  The  Company  will  duly and  punctually  pay the
principal  of, and  interest  and any premium on, any Note when the same becomes
due  and  payable   (whether  by  scheduled   maturity,   required   prepayment,
acceleration  or  otherwise  pursuant  to the  terms of the  Note),  subject  to
applicable grace periods.

     (b) Financial Statements. The Company will deliver to the Purchaser:

          (i) As soon as available and in any event within 60 days after the end
     of each fiscal quarter,  beginning with the fiscal quarter ending March 31,
     2000, unaudited  consolidated balance sheets of the Parent, the Company and
     their  Subsidiaries,  as of the  end of such  fiscal  month  and  unaudited
     consolidated  statements of income, cash flows and stockholders' equity for
     the Company and such Subsidiaries for the fiscal quarter then ended and for
     that  portion of the fiscal year then  ended,  in each case  setting  forth
     comparative  consolidated (or  consolidating)  figures as of the end of and
     for the  corresponding  period in the  preceding  fiscal year together with
     comparative  budgeted  figures  for the  fiscal  year  then  ended,  all in
     reasonable  detail and  prepared in  accordance  with GAAP  (subject to the
     absence  of  notes  required  by  GAAP  and  subject  to  normal   year-end
     adjustments)  applied  on a basis  consistent  with  that of the  preceding
     quarter or containing  disclosure of the effect on the financial  condition
     or results of  operations  of any change in the  application  of accounting
     principles and practices during such quarter;

          (ii) As soon as  available  and in any event within 120 days after the
     end of each fiscal year, beginning with the fiscal year ending December 31,
     1999, (A) an audited  consolidated balance sheet of the Parent, the Company
     and  their  Subsidiaries  as of the end of such  fiscal  year  and  audited
     consolidated  statements of income, cash flows and stockholders' equity for
     the Company and its Subsidiaries for the fiscal year then ended,  including
     the notes thereto, in each case setting forth comparative figures as of the
     end of and for the preceding fiscal year together with comparative budgeted
     figures  for the  fiscal  year then  ended,  all in  reasonable  detail and
     certified by an independent  certified public accounting firm of recognized
     national standing reasonably acceptable to the Purchaser, together with (1)
     a report  thereon by such  accountants  that is not  qualified  as to going
     concern or scope of audit and to the effect that such financial  statements
     present  fairly  the  consolidated   financial  condition  and  results  of
     operations of the Company and its  Subsidiaries as of the dates and for the
     periods  indicated in  accordance  with GAAP applied on a basis  consistent
     with that of the preceding  year or containing  disclosure of the effect on
     the  financial  condition  or  results of  operations  of any change in the
     application of accounting  principles  and practices  during such year, and
     (2) a  report  by such  accountants  to the  effect  that,  based on and in
     connection  with  their  examination  of the  financial  statements  of the
     Company and its Subsidiaries,  they obtained no knowledge of the occurrence
     or existence of any Default or Event of Default  relating to  accounting or
     financial  reporting  matters,  or a  statement  specifying  the nature and
     period of existence  of any such  Default or Event of Default  disclosed by
     their audit;  provided,  however, that such accountants shall not be liable
     by reason of the  failure to obtain  knowledge  of any  Default or Event of
     Default  that would not be  disclosed  or  revealed  in the course of their
     audit examination,  and (B) an unaudited consolidating balance sheet of the

                                       26
<PAGE>

     Company  and  its  Subsidiaries  as of the  end of  such  fiscal  year  and
     unaudited consolidating  statements of income, cash flows and stockholders'
     equity for the Company and its Subsidiaries for the fiscal year then ended,
     all in reasonable detail; and

          (iii)  Concurrently  with each  delivery of the  financial  statements
     described in paragraphs (i) and (ii) of this Section 7(b), a report in form
     and analysis  similar to the reports attached as Exhibit  7(b)(iii),  or in
     such other  form as may be  acceptable  to the  Purchaser,  regarding  such
     topics as such  company's  financial  condition and results of  operations,
     such  company's  business and  corresponding  industry  and such  company's
     management.

     (c) Other Business and Financial  Information.  The Company will deliver to
the Purchaser:

          (i)  Concurrently  with  each  delivery  of the  financial  statements
     described  in  Section  7(b)(ii),  and in any event not later than 120 days
     after the last day of each  fiscal  year,  beginning  with the fiscal  year
     ending December 31, 1999, a certificate  executed by a Financial Officer of
     the Company in form and substance satisfactory to the Purchaser;

          (ii) As soon as available and in any event within 30 days prior to the
     end of each fiscal year, beginning with the fiscal year ending December 31,
     2000,  a  consolidating  operating  budget for the Parent,  the Company and
     their  Subsidiaries  for the succeeding  fiscal year (prepared on a monthly
     basis),  consisting  of a  consolidating  balance  sheet and  consolidating
     statements  of income and cash  flows,  together  with a  certificate  of a
     Financial  Officer of the Company to the effect that such budgets have been
     prepared  in good  faith  and are  reasonable  estimates  of the  financial
     position  and results of  operations  of the Parent,  the Company and their
     Subsidiaries for the period covered thereby;  and as soon as available from
     time to time thereafter,  any modifications or revisions to or restatements
     of such budgets;

          (iii) Promptly upon receipt thereof, copies of any "management letter"
     submitted to the Company,  the Parent or any of their  Subsidiaries  by its
     certified  public  accountants in connection  with each annual,  interim or
     special audit, and promptly upon completion  thereof,  any response reports
     from the Company, the Parent or any such Subsidiary in respect thereof;

          (iv) Promptly upon the sending,  filing or receipt thereof,  copies of
     (A) all financial  statements,  reports,  notices and proxy statements that
     the  Company,  the Parent or any of their  Subsidiaries  shall send or make
     available  generally to its  shareholders,  (B) all  regular,  periodic and
     special reports, registration statements and prospectuses that the Company,
     the Parent or any of their  Subsidiaries  shall  render to or file with the
     Commission,  the National  Association of Securities  Dealers,  Inc. or any
     national  securities  exchange,  and  (C)  all  press  releases  and  other
     statements  made available  generally by the Company,  the Parent or any of
     their  Subsidiaries to the public concerning  material  developments in the
     business of the Company, the Parent or any of their Subsidiaries;

                                       27
<PAGE>

          (v) Promptly  upon (and in any event within five  Business Days after)
     any Responsible Officer of the Company obtaining knowledge thereof, written
     notice of any of the following:

               (A) the  occurrence of any Default or Event of Default,  together
          with a written  statement  of a  Responsible  Officer  of the  Company
          specifying the nature of such Default or Event of Default,  the period
          of  existence  thereof  and the action  that the Company has taken and
          proposes to take with respect thereto;

               (B)  the  institution  or  receipt  of  notice  of  a  threatened
          institution of any action,  suit,  investigation or proceeding against
          or  affecting  the  Company,  the Parent or any of their  Subsidiaries
          including any such  investigation  or  proceeding by any  Governmental
          Authority (other than routine periodic  inquiries,  investigations  or
          reviews),  that would, if adversely determined,  be reasonably likely,
          individually or in the aggregate,  to have a Material  Adverse Effect,
          and any material  development  in any  litigation or other  proceeding
          previously reported pursuant to Section 5(e) or this subsection;

               (C) the  receipt  by the  Company,  the  Parent  or any of  their
          Subsidiaries  from  any  Governmental  Authority  of  (1)  any  notice
          asserting  any  failure  by the  Company,  the  Parent or any of their
          Subsidiaries to be in compliance  with applicable  Requirements of Law
          or that  threatens the taking of any action  against the Company,  the
          Parent or any of their Subsidiary or sets forth circumstances that, if
          taken or adversely  determined,  would be reasonably  likely to have a
          Material Adverse Effect, or (2) any notice of any actual or threatened
          suspension,   limitation  or  revocation  of,  failure  to  renew,  or
          imposition of any restraining order, escrow or impoundment of funds in
          connection with, any license,  permit,  accreditation or authorization
          of the Company,  the Parent or any of their  Subsidiaries,  where such
          action would be reasonably likely to have a Material Adverse Effect;

               (D) the  occurrence  of any  ERISA  Event,  together  with  (1) a
          written statement of a Responsible  Officer of the Company  specifying
          the  details of such ERISA  Event and the action  that the Company has
          taken and  proposes to take with  respect  thereto,  (2) a copy of any
          notice  with  respect to such ERISA  Event that may be  required to be
          filed with the PBGC and (3) a copy of any notice delivered by the PBGC
          to the  Company or such  ERISA  Affiliate  with  respect to such ERISA
          Event;

               (E) the occurrence of any material default under, or any proposed
          or threatened termination or cancellation of, any Material Contract or
          other material contract or agreement to which the Company,  the Parent
          or  any  of  their   Subsidiaries  is  a  party,  the  termination  or
          cancellation  of which would be  reasonably  likely to have a Material
          Adverse Effect;

                                       28
<PAGE>

               (F) the occurrence of any of the following:  (1) the assertion of
          any Environmental  Claim against or affecting the Company,  the Parent
          any of their  Subsidiaries  or any of their  respective real property,
          leased or owned, or the Company's or the Parent's discovery of a basis
          for such an Environmental  Claim; (2) the receipt by the Company,  the
          Parent or any of their Subsidiaries of notice of any alleged violation
          of or  noncompliance  with any  Environmental  Laws, or any release of
          Hazardous  Materials;  or (3) the  taking  of any  remedial  action or
          investigation by the Company, the Parent, any of their Subsidiaries or
          any other  Person in  response  to the actual or  alleged  generation,
          storage, release, disposal or discharge of any Hazardous Materials on,
          to, upon or from any real property leased or owned by the Company, the
          Parent or any of their  Subsidiaries;  but in each case under  clauses
          (1),  (2)  and (3)  above,  only  to the  extent  the  same  would  be
          reasonably likely to have a Material Adverse Effect; and

               (G) any other  matter or event that has,  or would be  reasonably
          likely to have, a Material  Adverse  Effect,  together  with a written
          statement of a  Responsible  Officer of the Company  setting forth the
          nature and period of existence thereof and the action that the Company
          has taken and proposes to take with respect thereto;

          (vi) Promptly after (and in any event within 30 days  thereafter) each
     fiscal month a Lease Payment Report with respect to all payments made under
     leases for real property due and payable during such month; and

          (vii) As promptly as reasonably possible, such other information about
     the business, condition (financial or otherwise),  operations or properties
     of the Company, the Parent or any of their Subsidiaries (including any Plan
     and any information  required to be filed under ERISA) as the Purchaser may
     from time to time reasonably request.

     (d) Corporate Existence; Franchises; Maintenance of Properties. The Company
will, and shall cause the Parent and each of their Subsidiaries to, (i) maintain
and  preserve  in full  force and  effect  its  corporate  existence,  except as
expressly otherwise  permitted otherwise by Section 9(a), (ii) obtain,  maintain
and preserve in full force and effect all other  rights,  franchises,  licenses,
permits,  certifications,  approvals and authorizations required by Governmental
Authorities and necessary to the ownership,  occupation or use of its properties
or the conduct of its business,  except to the extent the failure to do so would
not be reasonably  likely to have a Material Adverse Effect,  and (iii) keep all
material  properties in good working  order and condition  (normal wear and tear
excepted) and from time to time make all  necessary  repairs to and renewals and
replacements  of  such  properties,  except  to the  extent  that  any  of  such
properties are obsolete or are being replaced.

     (e) Compliance  with Laws. The Company will, and shall cause the Parent and
each of their  Subsidiaries  to, comply in all respects with all Requirements of
Law  applicable  in respect of the conduct of its business and the ownership and
operation of its properties, except to the extent the failure so to comply would
not be reasonably likely to have a Material Adverse Effect.

                                       29
<PAGE>

     (f) Payment of  Obligations.  The Company will,  and shall cause the Parent
and each of their  Subsidiaries  to, (i) pay all  liabilities and obligations as
and when due (subject to any applicable subordination provisions), except to the
extent  failure  to do so would  not be  reasonably  likely  to have a  Material
Adverse  Effect,  and  (ii)  pay  and  discharge  all  taxes,   assessments  and
governmental  charges or levies  imposed  upon it, upon its income or profits or
upon any of its  properties,  prior to the date on which  penalties would attach
thereto,  and all lawful claims that, if unpaid, might become a Lien upon any of
the  properties  of the  Company,  the  Parent  or any  of  their  Subsidiaries;
provided,  however,  that  neither  the  Company,  the  Parent  nor any of their
Subsidiaries  shall be  required  to pay any  such  unsecured  tax,  assessment,
charge,  levy or claim  that is being  contested  in good  faith  and by  proper
proceedings and as to which the Company, the Parent or any of their Subsidiaries
is maintaining adequate reserves with respect thereto in accordance with GAAP.

     (g)  Insurance.  The Company  will,  and shall cause the Parent and each of
their  Subsidiaries to, maintain with financially sound and reputable  insurance
companies insurance with respect to its assets, properties and business, against
such  hazards  and  liabilities,  of  such  types  and in  such  amounts,  as is
customarily  maintained by companies in the same or similar businesses similarly
situated.

     (h)  Maintenance  of Books and Records;  Inspection.  The Company will, and
shall cause the Parent and each of their Subsidiaries (to the extent the Company
and the Parent have any  Subsidiaries  after the Closing  Date) to, (i) maintain
adequate  books,  accounts and records,  in which full, true and correct entries
shall be made of all  financial  transactions  in relation to its  business  and
properties,  and prepare all financial statements required under this Agreement,
in each case in accordance with GAAP and in compliance with the  requirements of
any  Governmental  Authority  having  jurisdiction  over  it,  and  (ii)  permit
employees or agents of the  Purchaser to inspect its  properties  and examine or
audit its books,  records,  working  papers  and  accounts  and make  copies and
memoranda of them,  and to discuss its affairs,  finances and accounts  with its
officers and employees and, upon notice to the Company,  the independent  public
accountants of the Company,  the Parent and of their  Subsidiaries  (and by this
provision the Company and the Parent  authorize such  accountants to discuss the
finances and affairs of the Company, the Parent and of their Subsidiaries),  all
at such times and from time to time, upon reasonable  notice and during business
hours, as may be reasonably requested.

     (i) Creation or Acquisition of  Subsidiaries.  Subject to the provisions of
Section  9(e),  the  Company  may  from  time  to time  create  or  acquire  new
Subsidiaries  or new  Wholly  Owned and the  Wholly  Owned  Subsidiaries  of the
Company  may create or acquire  new Wholly  Owned  Subsidiaries,  provided  that
concurrently  with (and in any event  within 15 Business  Days  thereafter)  the
creation or direct or indirect acquisition by the Company thereof, each such new

                                       30
<PAGE>

Subsidiary (a "Subsidiary  Guarantor") will execute and deliver to the Purchaser
a guaranty  ("Guaranty"),  or a joinder  thereto,  substantially  in the form of
Exhibit 7(i) pursuant to which new  Subsidiary  shall become a party thereto and
shall guarantee the payment in full of the Note.

     (j) Reserved.

     (k) Further  Assurances.  The Company and the Parent  will,  and will cause
each of their Subsidiaries to, make, execute,  endorse,  acknowledge and deliver
any amendments,  modifications or supplements hereto and restatements hereof and
any other agreements,  instruments or documents, and take any and all such other
actions,  as may from time to time be  reasonably  requested by the Purchaser to
effect, confirm or further assure or protect and preserve the interests,  rights
and remedies of the Purchaser  under this  Agreement  and the other  Transaction
Documents.

     (l) Use of  Proceeds.  The Company will use the proceeds of the sale of the
Note  solely  for the  purposes  set forth on  ----------------  Schedule  5(x).
-------------

     (m) Compliance with Agreements. The Company will and shall cause the Parent
to, perform and observe,  and will cause each of their  Subsidiaries  to perform
and observe, all of their material obligations to the Purchaser, and the holders
of the Notes set forth in this Agreement,  the Notes, and the other  Transaction
Documents  to  which  it  is  a  party  and  the   certificate  or  articles  of
incorporation,  formation or organization and bylaws or other organizational and
governing documents of the Company, the Parent or any of their Subsidiaries.

     (n) Indemnification.

          (i) The  Company,  without  limitation  as to time,  will  defend  and
     indemnify the Purchaser and its officers,  directors,  managers, employees,
     attorneys and agents (each, an "Indemnified  Party") against, and hold each
     Indemnified Party harmless from, all losses, claims, damages,  liabilities,
     costs  (including the costs of preparation  and actual  attorneys' fees and
     expenses reasonably incurred) (collectively,  the "Losses") incurred by any
     Indemnified Party as a result of, or arising out of, or relating to (A) any
     misrepresentation  or breach of any  representation or warranty made by the
     Company herein, (B) any breach of any covenant,  agreement or obligation of
     the Company,  the Parent or any of their  Subsidiaries  contained in any of
     the Transaction  Documents or (C) any  investigation or proceeding  against
     the Company or any  Indemnified  Party and arising out of or in  connection
     with this Agreement or any of the Transaction Documents, whether or not the
     transactions   contemplated  by  this  Agreement  are  consummated,   which
     investigation or proceeding  requires the participation of, or is commenced
     or filed against,  any  Indemnified  Party because of this  Agreement,  any
     other  Transaction  Document or such other  documents and the  transactions
     contemplated hereby or thereby, other than any Losses resulting from action
     on the part of such Indemnified  Party which is finally  determined in such
     proceeding  to be primarily  and  directly a result of such  party's  gross
     negligence  or willful  misconduct.  The Company  agrees to reimburse  each
     Indemnified Party promptly for all such Losses as they are incurred by such
     Indemnified Party in connection with the investigation of,  preparation for

                                       31
<PAGE>

     or defense of any pending or  threatened  claim or any action or proceeding
     arising  therefrom.  The Purchaser  agrees to reimburse the Company for any
     payments  made by the Company to the Purchaser  pursuant to this  paragraph
     for Losses which are finally determined in such proceeding to primarily and
     directly  result from the gross  negligence  or willful  misconduct  of the
     Purchaser. The obligations of the Company under this paragraph will survive
     any  transfer of the Note,  or the  Capital  Stock  issued  pursuant to the
     Acquisition  Documents  by  the  Purchaser  and  the  termination  of  this
     Agreement.  In the event that the  foregoing  indemnity is  unavailable  or
     insufficient to hold an Indemnified  Party harmless,  then the Company will
     contribute to amounts paid or payable by such Indemnified  Party in respect
     of such  Indemnified  Party's Losses in such  proportions as  appropriately
     reflect the relative benefits received by and fault of the Company and such
     Indemnified  Party in  connection  with the matters as to which such Losses
     relate and other equitable considerations.

          (ii) If any action,  proceeding or investigation  is commenced,  as to
     which any  Indemnified  Party proposes to demand such  indemnification,  it
     shall notify the Company with  reasonable  promptness;  provided,  however,
     that any failure by such Indemnified  Party to notify the Company shall not
     relieve the Company from its obligations hereunder except to the extent the
     Company is prejudiced thereby.  The Company shall be entitled to assume the
     defense of any such action,  proceeding  or  investigation,  including  the
     employment  of  counsel  and the  payment  of all  fees and  expenses.  The
     Indemnified  Party  shall  have the right to  employ  separate  counsel  in
     connection  with  any  such  action,  proceeding  or  investigation  and to
     participate  in the  defense  thereof,  but the fees and  expenses  of such
     counsel shall be paid by the Indemnified Party,  unless (A) the Company has
     failed to assume the defense and employ counsel as provided herein, (B) the
     Company  has agreed in writing to pay such fees and  expenses  of  separate
     counsel or (C) an action,  proceeding,  or investigation has been commenced
     against both the Indemnified Party and/or the Company and representation of
     both the Company and the  Indemnified  Party by the same  counsel  would be
     inappropriate  because of actual or potential conflicts of interest between
     the parties. In the case of any circumstance  described in clauses (A), (B)
     or (C)  of  the  immediately  preceding  sentence,  the  Company  shall  be
     responsible for the reasonable  fees and expenses of such separate  counsel
     actually  incurred;  provided,  however,  that the Company shall not in any
     event be  required to pay the fees and  expenses of more than one  separate
     counsel (and, if deemed  necessary by such  separate  counsel,  appropriate
     local  counsel  who  shall  report  to  such  separate   counsel)  for  all
     Indemnified Parties. The Company shall be liable only for settlement of any
     claim against an Indemnified Party made with the Company's written consent.

     (o) ERISA.  The Company shall, and shall cause each of the Parent and their
respective  Subsidiaries to comply in all material  respects with the applicable
provisions  of ERISA and neither the Company,  the Parent nor any of their ERISA
Affiliates will make, or will accrue an obligation to make, any  contribution to
any Multiemployer Plan.

     (p)  Brokerage.  The Company  shall pay,  and hold the  Purchaser  harmless
against,  any  liability,  loss  or  expense  (including,   without  limitation,
reasonable  attorneys' fees and  out-of-pocket  expenses)  arising in connection
with any claim  against the Company,  or arising as a result of actions taken by
the  Company  or  any of its  officers,  directors,  employees  or  agents,  for
brokerage commissions,  finders' fees or similar compensation in connection with
the transactions contemplated by this Agreement.

                                       32
<PAGE>

     (q)  Amendment of  Covenants.  If the Company  amends or adopts any term or
provision  under the  Credit  Documents  that as a result of such  amendment  or
adoption  imposes more  restrictive  terms or provisions on the Company than the
terms and provisions in effect as set forth in the credit agreement, dated as of
August 29, 1997 between RTFC and the  Company,  then the Company  shall amend or
adopt, in a correspondingly  more restrictive  manner, any term or provision set
forth under Sections 7, 8 or 9 hereunder to track such amendments.

SECTION 8. FINANCIAL COVENANTS. The Company covenants and agrees that, until the
payment in full of all principal  and interest  under the Note together with all
Obligations  and all  amounts  then due and owing  under  the other  Transaction
Documents:

     (a) Covered  POPs:  The Company  shall  build-out  its PCS network so as to
achieve the total number of population equivalents ("POPs") covered by Company's
Federal  Communication  Commission  licensed  or  partitioned  area  equal to or
greater than as follows:

         December 31, 2000       2,615,000

     (b) Wireless Subscribers: The Company shall have total wireless subscribers
equal to or greater than the numbers established as follows:

         December 31, 2000          35,100

SECTION 9. NEGATIVE COVENANTS.  The Company covenants and agrees that, until the
payment in full of all principal  and interest  under the Note together with all
Obligations and all amounts due and owing under the other Transaction Documents:

     (a) Merger; Consolidation. The Company will not, and shall cause the Parent
to, not permit or cause any of their respective Subsidiaries to, liquidate, wind
up or dissolve, or enter into any consolidation, merger or other combination, or
agree to do any of the foregoing; provided, however, that:

          (i) the Company may merge or  consolidate  with another Person so long
     as (x) the Company is the surviving entity, (y) unless such other Person is
     a Wholly Owned Subsidiary  immediately prior to giving effect thereto, such
     merger or consolidation  shall  constitute a Permitted  Acquisition and the
     applicable  conditions and  requirements  of Sections 7(h) and (i) shall be
     satisfied,  and (z) immediately after giving effect thereto,  no Default or
     Event of Default would exist; and

                                       33
<PAGE>

          (ii) any such Subsidiary may merge or consolidate  with another Person
     or a  Subsidiary  may be  liquidated  into the  Company  so long as (x) the
     surviving entity is the Company or a Subsidiary Guarantor,  (y) unless such
     other  Person  is a Wholly  Owned  Subsidiary  immediately  prior to giving
     effect thereto,  such merger or consolidation  shall constitute a Permitted
     Acquisition and the applicable conditions and requirements of Sections 7(h)
     and (i)  shall  be  satisfied,  and (z)  immediately  after  giving  effect
     thereto, no Default or Event of Default would exist.

     (b) Indebtedness.  The Company will not, and shall cause the Parent to not,
permit or cause any of their respective  Subsidiaries to, create,  incur, assume
or suffer to exist any Indebtedness other than:

          (i)  Indebtedness  incurred  under  the  Credit  Documents  up  to  an
     aggregate  principal  amount of up to  $70,000,000;  provided that (x) such
     Indebtedness  is incurred in  accordance  with  Section 8, Section 9(n) and
     Section 9(o) and (y) immediately after giving effect thereto, no Default or
     Event of Default  would exist and;  provided,  further,  that  Indebtedness
     existing on the Closing Date arising  under the Credit  Documents  shall be
     permitted hereunder(collectively, "Permitted Senior Debt");

          (ii) Indebtedness existing under the Note;

          (iii) accrued expenses (including salaries, accrued vacation and other
     compensation),  current trade or other  accounts  payable and other current
     liabilities  arising in the  ordinary  course of business  and not incurred
     through the  borrowing of money,  provided that the same shall be paid when
     due except to the extent being  contested in good faith and by  appropriate
     proceedings;

          (iv) loans and advances by the Company,  the Parent or any  Subsidiary
     Guarantor to any other Subsidiary  Guarantor or by any Subsidiary Guarantor
     to the  Company or the  Parent,  provided  that any such loan or advance is
     subordinated in right and time of payment to the Subdebt Obligations and is
     evidenced by an Intercompany  Note or some other  promissory  note, in form
     and substance satisfactory to the Purchaser;

          (v)  Indebtedness  existing  on the  Closing  Date  and  described  in
     Schedule 9(b); and

          (vi) other unsecured  Indebtedness not exceeding $250,000 in aggregate
     principal amount outstanding at any time.

     (c) Liens.  The Company will not, and shall cause the Parent to, not permit
or cause any of their respective Subsidiaries to, directly or indirectly,  make,
create,  incur,  assume or suffer to exist, any Lien upon or with respect to any
part of its property or assets, whether now owned or hereafter acquired, or file
or permit the filing of, or permit to remain in effect, any financing  statement
or other similar  notice of any Lien with respect to any such  property,  asset,
income or profits  under the Uniform  Commercial  Code of any state or under any
similar recording or notice statute, or agree to do any of the foregoing,  other
than the following (collectively, "Permitted Liens"):

                                       34
<PAGE>

          (i) Liens created under the Credit Documents;

          (ii) Liens in  existence on the Closing Date and set forth on Schedule
     9(c);

          (iii) Liens imposed by law,  such as Liens of carriers,  warehousemen,
     mechanics,  materialmen and landlords,  and other similar Liens incurred in
     the ordinary  course of business for sums not  constituting  borrowed money
     that are not  overdue  for a period  of more than 30 days or that are being
     contested in good faith by appropriate  proceedings  and for which adequate
     reserves have been  established in accordance with GAAP (if so required) or
     for which bonds have been obtained;

          (iv) Liens  (other  than any Lien  imposed by ERISA,  the  creation or
     incurrence  of which  would  result in an Event of Default  incurred in the
     ordinary  course of  business in  connection  with  worker's  compensation,
     unemployment   insurance  or  other  forms  of  governmental  insurance  or
     benefits, or to secure the performance of letters of credit, bids, tenders,
     statutory  obligations,   surety  and  appeal  bonds,  leases,   government
     contracts  and  other  similar  obligations  (other  than  obligations  for
     borrowed money) entered into in the ordinary course of business; and

          (v) Liens for  taxes,  assessments  or other  governmental  charges or
     statutory obligations that are not delinquent or remain payable without any
     penalty  or  that  are  being   contested  in  good  faith  by  appropriate
     proceedings  and for  which  adequate  reserves  have been  established  in
     accordance with GAAP (if so required).

     (d) Disposition of Assets. The Company will not, and shall cause the Parent
to, not permit or cause any of their respective  Subsidiaries to, sell,  assign,
lease,  convey,  transfer or otherwise dispose of (whether in one or a series of
transactions)  all  or  any  portion  of  its  assets,  business  or  properties
(including,  without limitation,  any Capital Stock of any such Subsidiary),  or
enter  into any  arrangement  with any  Person  providing  for the  lease by the
Company,  the Parent or any such Subsidiary as lessee of any asset that has been
sold or  transferred  by the  Company,  the  Parent or such  Subsidiary  to such
Person, or agree to do any of the foregoing, except for:

          (i) sales of inventory in the ordinary course of business;

          (ii) the sale or exchange of used or obsolete  equipment to the extent
     (A) the  proceeds of such sale are applied  towards,  or such  equipment is
     exchanged  for,  replacement  equipment or (B) such  equipment is no longer
     necessary for the operations of the Company, the Parent or their applicable
     Subsidiary in the ordinary course of business; and

                                       35
<PAGE>

          (iii) the sale,  lease or other  disposition of assets by a Subsidiary
     of the Company to the Company,  the Parent to the Parent or to a Subsidiary
     Guarantor if, immediately after giving effect thereto,  no Default or Event
     of Default would exist.

     (e)  Investments.  The Company will not, and shall cause the Parent to, not
permit or cause any of their respective Subsidiaries to, directly or indirectly,
purchase,  own,  invest in or otherwise  acquire any Capital Stock,  evidence of
indebtedness or other  obligation or security or any interest  whatsoever in any
other  Person,  or make or permit to exist any loans,  advances or extensions of
credit to, or any  investment  in cash or by delivery of property  in, any other
Person,  or purchase or otherwise acquire (whether in one or a series of related
transactions)  any portion of the  assets,  business  or  properties  of another
Person  (including  pursuant  to an  Acquisition),  or  create  or  acquire  any
Subsidiary,  or become a partner or joint  venturer in any  partnership or joint
venture (collectively,  "Investments"),  or make a commitment or otherwise agree
to do any of the foregoing, other than:

          (i) Cash Equivalents;

          (ii)   Investments   consisting  of  purchases  and   acquisitions  of
     inventory,  supplies,  materials  and  equipment in the ordinary  course of
     business,

          (iii)  Investments  consisting  of loans and advances to employees for
     reasonable travel,  relocation and business expenses in the ordinary course
     of business, extensions of trade credit in the ordinary course of business,
     and prepaid expenses incurred in the ordinary course of business;

          (iv)  without  duplication,  Investments  consisting  of  intercompany
     Indebtedness permitted under clause (iv) of Section 9(b);

          (v) Investments existing on the Closing Date and described in Schedule
     9(e);

          (vi) Investments  consisting of the making of capital contributions or
     the  purchase  of  Capital  Stock  (a) by the  Company,  the  Parent or any
     Subsidiary  in any other Wholly Owned  Subsidiary  that is (or  immediately
     after  giving  effect to such  Permitted  Investment  will be) a Subsidiary
     Guarantor, provided that the Company complies or cause the Parent to comply
     with the  provisions of Section 7(i),  (b) by any Subsidiary in the Company
     or the Parent  and (c) by the  Company  in Bright  Personal  Communications
     Services, LLC; and

          (vii) Investments made by the Parent in the Company or any Subsidiary.

     (f) Restricted  Payments.  The Company will not, and shall cause the Parent
to, not permit or cause any of their  respective  Subsidiaries  to,  directly or
indirectly, declare or make any dividend payment, or make any other distribution
of cash,  property  or assets,  in respect  of any of its  Capital  Stock or any
warrants,  rights or options to acquire its Capital Stock, or purchase,  redeem,

                                       36
<PAGE>

retire or  otherwise  acquire for value any shares of its  Capital  Stock or any
warrants, rights or options to acquire its Capital Stock, or set aside funds for
any of the foregoing, except that:

                    (A) the Company may  declare and make  dividend  payments or
               other distributions payable solely in its common stock;

                    (B) each Wholly  Owned  Subsidiary  of the Company or of the
               Parent  may   declare  and  make   dividend   payments  or  other
               distributions  to the Company or to the Parent or another  Wholly
               Owned  Subsidiary  of the Company,  to the extent not  prohibited
               under applicable Requirements of Law; and

                    (C) the  Parent  shall  have  the  right  to  make  dividend
               payments  or  other  distributions  to  its  shareholders  in  an
               aggregate amount of up to $3,000,000 in any fiscal year.

     (g) Transactions with Affiliates. The Company will not, and shall cause the
Parent to, not permit or cause any of their  respective  Subsidiaries  to, enter
into any transaction (including,  without limitation,  any purchase, sale, lease
or exchange  of property or the  rendering  of any  service)  with any  officer,
director,  stockholder  or other  Affiliate  of the  Company,  the Parent or any
Subsidiary,  except in the  ordinary  course of its  business  and upon fair and
reasonable  terms  that  are no less  favorable  to it than  would  obtain  in a
comparable arm's length transaction with a Person other than an Affiliate of the
Company,  the  Parent  or  such  Subsidiary;  provided,  however,  that  nothing
contained in this Section shall prohibit:

          (i)  transactions  described on Schedule  5(s) or otherwise  expressly
     permitted under this Agreement; and

          (ii) the payment by the Company of reasonable  and  customary  fees to
     members of its Board of Directors.

     (h) Lines of Business. The Company will not, and shall cause the Parent to,
not  permit  or cause any of their  respective  Subsidiaries  to,  engage in any
business  other  than  the  businesses  engaged  by it on the  Closing  Date  or
businesses and activities reasonably related thereto.

     (i) Certain  Amendments.  The Company  will not, and shall cause the Parent
to, not permit or cause any of their respective  Subsidiaries,  to amend, modify
or change (A) any provision of its articles or certificate of  incorporation  or
bylaws or code of  regulations  other than in a manner that could not reasonably
be expected to adversely  affect the Purchaser in its capacity as holders of the
Note.

     (j)  Limitation  on Certain  Restrictions.  The Company will not, and shall
cause the Parent to,  not permit or cause any of their  respective  Subsidiaries
to,  directly or  indirectly,  create or  otherwise  cause or suffer to exist or
become  effective  any  restriction  or  encumbrance  on (i) the  ability of the
Company,  the Parent and any of their  Subsidiaries  to perform  and comply with

                                       37
<PAGE>

their respective obligations under the Transaction Documents or (ii) the ability
of any such Subsidiary to make any dividend  payments or other  distributions in
respect of its Capital Stock,  to repay  Indebtedness  owed to the Company,  the
Parent or any such other  Subsidiary,  to make loans or advances to the Company,
the Parent or any such other  Subsidiary,  or to  transfer  any of its assets or
properties to the Company,  the Parent or any such other Subsidiary,  (excluding
(i) any  agreement  or  instrument  creating a  Permitted  Lien (but only to the
extent  such  agreement  or  restriction  applies to the assets  subject to such
Permitted Lien), and (ii) operating leases of real or personal  property entered
into by the  Company,  the  Parent  or any such  Subsidiaries  as  lessee in the
ordinary  course of  business),  in each case  other than such  restrictions  or
encumbrances  existing  under  or  by  reason  of  the  Credit  Documents,   the
Transaction Documents or applicable Requirements of Law.

     (k) No Other  Negative  Pledges.  The Company will not, and shall cause the
Parent to, not permit or cause any of their respective Subsidiaries to, directly
or indirectly,  enter into or suffer to exist any agreement or restriction  that
prohibits or conditions the creation,  incurrence or assumption of any Lien upon
or with  respect to any part of its  property  or assets,  whether  now owned or
hereafter acquired, or agree to do any of the foregoing, other than as set forth
in (i) this Agreement and the Credit Documents, (ii) any agreement or instrument
creating a Permitted  Lien (but only to the extent such agreement or restriction
applies  to the assets  subject to such  Permitted  Lien),  and (iii)  operating
leases of real or personal  property entered into by the Company,  the Parent or
any of their Subsidiaries as lessee in the ordinary course of business.

     (l) Fiscal  Year.  The Company will not, and shall cause the Parent to, not
permit or cause any of their respective  Subsidiaries to, change the ending date
of its fiscal year to a date other than December 31.

     (m)  Accounting  Changes.  The Company will not, and shall cause the Parent
to, not permit or cause any of their respective  Subsidiaries to, make or permit
any material change in its accounting policies or reporting practices, except as
may be required by GAAP.

     (n)  Modifications  of Credit  Agreements.  The  Company  shall not  amend,
refinance, replace or otherwise modify either of the Credit Agreements or any of
the  Credit  Documents  (i)  to  increase  by  more  than  110%  the  sum of the
outstanding  term  loans  and  revolving  loan  commitments   under  the  Credit
Agreements at the time of such amendment or modification,  (ii) to amend any (A)
financial  covenant,  (B) affirmative  covenant or (C) negative  covenant in any
manner that would reasonably be likely to adversely affect the Purchaser than as
set forth in the credit  agreement dated August 29, 1997 between the Company and
RTFC as in effect on the  Closing  Date  and/or  amend the  defined  terms  used
therein  that are more  burdensome  or  restrictive  with respect to the Company
(except for  amendments to such  financial,  affirmative  or negative  covenants
which are also  reflected in  amendment(s)  under this  Agreement),  or (iii) to
amend any term or provision that imposes more restrictive  terms with respect to
the  payment  of the  Indebtedness  under  this  Agreement  than the  terms  and
conditions  contained in the credit  agreement dated August 29, 1997 between the
Company and RTFC as in effect on the Closing Date.

     (o) Additional Limitations on Indebtedness.  Notwithstanding the provisions
of  Section  9(b),  the  Company  shall  not  incur  any  Indebtedness  that  is
subordinate or junior in right of payment to any  Indebtedness (i) arising under
the  Credit  Agreements  and  senior in any  respect  in right of payment to any
Indebtedness  arising under the  Transaction  Documents  (including the Note) or
(ii) that is equal in right of payment  to any  Indebtedness  arising  under the
Transaction Documents (including the Note).

                                       38
<PAGE>

SECTION 10.   RESERVED.

SECTION 11.  GENERAL.  As further and  special  provisions  set forth under this
Agreement, the parties hereto further warrant, covenant, contract and agree each
with the other as follows:

     (a) Entire Agreement.  This Agreement,  the Transaction Documents and other
documents  referred to herein and therein  constitute  the entire  understanding
among the parties as to the subject  matter  specifically  referred to herein or
therein.

     (b)  Reimbursement  of Expenses.  The Company agrees (a) whether or not the
transactions  contemplated by this Agreement  shall be consummated,  to pay upon
demand  all  reasonable  out-of-pocket  costs  and  expenses  of  the  Purchaser
(including,  without limitation,  the reasonable fees and expenses of counsel to
the   Purchaser)  in  connection   with  (i)  the   Purchaser's   due  diligence
investigation in connection with, and the preparation,  negotiation,  execution,
delivery  of,  this  Agreement  and the  other  Transaction  Documents,  and any
amendment,  modification  or waiver  hereof or thereof or consent  with  respect
hereto or thereto and (ii) the administration, monitoring and review of the Note
(including,  without  limitation,  out-of-pocket  expenses  for  travel,  meals,
long-distance  telephone  calls,  wire transfers,  facsimile  transmissions  and
copying and with respect to the engagement of appraisers,  consultants, auditors
or similar  Persons by the  Purchaser at any time,  whether  before or after the
Closing, to render opinions concerning the Company's financial  condition),  (b)
to pay upon  demand  all  reasonable  out-of-pocket  costs and  expenses  of the
Purchaser  (including,  without  limitation,   reasonable  attorneys'  fees  and
expenses) in connection with (x) any refinancing or  restructuring  of the Note,
whether  in  the  nature  of a  "work-out,"  in  any  insolvency  or  bankruptcy
proceeding or otherwise and whether or not consummated, and (y) the enforcement,
attempted  enforcement  or  preservation  of any rights or  remedies  under this
Agreement or any of the other Transaction Documents, whether in any action, suit
or proceeding (including any bankruptcy or insolvency  proceeding) or otherwise,
and (c) to pay and hold the  Purchaser  harmless  from and against all liability
for any  intangibles,  documentary,  stamp  or  other  similar  taxes,  fees and
excises,  if any,  including  any  interest and  penalties,  and any finder's or
brokerage fees,  commissions  and expenses (other than any fees,  commissions or
expenses of finders or brokers engaged by the Purchaser), that may be payable in
connection  with the  transactions  contemplated by this Agreement and the other
Transaction Documents.

     (c)  Survival  of  Agreements  and  Representations  and  Warranties.   All
agreements and all  representations  and warranties  contained herein or made in
writing by the Company in connection herewith,  to the extent applicable,  shall
survive  the  execution  and  delivery  of this  Agreement  and other  documents
referred  to herein and shall  continue  until the  Purchaser  ceases to own any
Note.

     (d) No Waiver.  No delay by or on behalf of the Purchaser in exercising any
rights conferred  hereunder,  and no course of dealing between the Purchaser and
the Company  shall operate as a waiver of any right  granted  hereunder,  unless
expressly waived in writing by the party whose waiver is alleged.

                                       39
<PAGE>

     (e)  Binding  Effect;  Participations.   All  covenants,   representations,
warranties and other stipulations in this Agreement and other documents referred
to herein,  given by or on behalf of any of the parties  hereto,  shall bind and
inure  to  the   benefit  of  the   respective   successors,   heirs,   personal
representatives  and assigns of the parties hereto,  except that the Company may
not assign or transfer any of its rights or obligations  under this Agreement or
any of the other Transaction  Documents without the prior written consent of the
Purchaser.  This Agreement,  the Note and any of the other Transaction Documents
may be endorsed, assigned and transferred in whole or part by the Purchaser. The
Purchaser may grant  participations  in the Note,  this  Agreement and the other
Transaction  Documents (or any portion thereof).  The Purchaser shall notify the
Company  in writing  of any such  endorsement,  assignment  or  transfer  by the
Purchaser.  In the event of any such grant of a  participation  in the Note, all
references in this  Agreement  requiring the consent  waiver or amendment of the
Purchaser shall instead require an action by the Required Purchasers.

     (f) Initial  Holder.  The Company  shall be entitled to treat and deal with
the  Purchaser,  and shall not be required to recognize  any other Person as the
holder of the Note,  except  after  production  of such Note duly  endorsed  for
transfer, together with such documentation as the Company may reasonably require
concerning compliance with federal or state securities laws, or after receipt by
the Company of written notice from the Person theretofore entitled to be treated
as the holder  advising  the Company of the  transfer of such Note to such other
Person and stating the latter's address, together with such documentation as the
Company may  reasonably  require  concerning  compliance  with  federal or state
securities laws.

     (g) Cumulative Powers. No remedy herein conferred upon the Purchaser or any
holder of the Note is intended to be  exclusive  of any other  remedy,  and each
such remedy  shall be  cumulative  and in addition to every other  remedy  given
hereunder  or now or  hereafter  existing  at law, or in equity or by statute or
otherwise.

     (h) Loss of  Securities;  Reissue of  Securities  in Lesser  Denominations.
Upon:

          (i) receipt of evidence  satisfactory  to the Company of loss,  theft,
     mutilation or destruction of the Note, and

          (ii) in the case of any such loss, theft or destruction, upon delivery
     of indemnity in such form and amount as shall be reasonably satisfactory to
     the  Company,  or in the  event  of such  mutilation,  upon  surrender  and
     cancellation  of such Note, the Company will make and deliver a new Note of
     like tenor, in lieu of such lost,  stolen,  mutilated or destroyed Note. In
     addition,  upon request of any holder of a Note or other  securities of the
     Company or the Parent now or hereafter  issued by the Company or the Parent
     to the Purchaser,  and upon  surrender of such Note or other  securities to
     the Company and compliance with any restrictive legends, the Company or the
     Parent will reissue, in lesser  denominations to parties designated by such
     holder,  new  certificates,  warrants or other securities in the equivalent
     amounts of such other securities surrendered.

                                       40
<PAGE>

     (i)  Communications.  All communications and notices provided for hereunder
shall be sent by personal  delivery,  nationally  recognized  overnight courier,
facsimile or registered  or certified  mail, to the Purchaser and the Company at
their respective addresses set forth on Schedule 11(i), or to such other address
with respect to any party as such party shall notify the other parties hereto in
writing. Any notice required to be given hereunder by one party to another shall
be deemed to have been received (i) when delivered,  if personally  delivered or
sent  via  facsimile,  or  (ii)  one  day  following  delivery  to a  nationally
recognized  overnight  courier or (iii) on the third  business day following the
date on which the piece of mail containing such communication is posted, if sent
by certified or registered mail.  Except as otherwise  provided for herein,  all
requests  for  disclosure  or  other  provision  of  information  to be  made or
otherwise  given  by the  Company  shall  be  completed  no  later  than 10 days
following the receipt by the Company of a written request therefor in the manner
described in this Section.

     (j) Legend.

     The Note and each  certificate,  if any, issued pursuant to the Acquisition
Documents will bear a legend in substantially the following form:

     THE SECURITIES  REPRESENTED BY THIS CERTIFICATE OR INSTRUMENT HAVE NOT BEEN
     REGISTERED  UNDER THE  SECURITIES  ACT OF 1933,  AS  AMENDED,  OR ANY STATE
     SECURITIES LAWS, AND MAY NOT BE TRANSFERRED UNLESS THE COMPANY HAS RECEIVED
     A WRITTEN  OPINION FROM COUNSEL IN FORM AND SUBSTANCE  SATISFACTORY  TO THE
     COMPANY  STATING THAT SUCH  TRANSFER IS BEING MADE IN  COMPLIANCE  WITH ALL
     APPLICABLE FEDERAL AND STATE SECURITIES LAWS.

     (k) Confidentiality; Public Announcements.

          (i) The  Purchaser  shall  use its  best  efforts  not to make  public
     disclosure  of any  information  designated  by the  Company  in writing as
     confidential,  including  financial terms and financial and  organizational
     information contained in any documents, statements, certificates, materials
     or information furnished,  or to be furnished, by the Company in connection
     with the transactions  contemplated by this Agreement;  provided,  however,
     that the foregoing shall not be construed,  now or in the future,  to apply
     to any information reflected in any recorded document, information which is
     independently developed by the Purchaser, information obtained from sources
     other  than the  Company  or  information  that is or becomes in the public

                                       41
<PAGE>

     domain,  nor shall it be construed to prevent the Purchaser from (i) making
     any  disclosure  of  any  information  (A)  if  required  to do  so by  any
     Requirement of Law, (B) to any  Governmental  Authority  having or claiming
     authority to regulate or oversee any aspect of the Purchaser's  business or
     that of the  corporate  parent or affiliates of the Purchaser in connection
     with the exercise of such authority or claimed  authority,  or (C) pursuant
     to  subpoena;  or (ii) to the extent the  Purchaser  or its  counsel  deems
     necessary  or  appropriate  to do so to effect or preserve its security for
     any  applicable  investment or financing or to enforce any remedy  provided
     herein or in any applicable  investment or financing documents or otherwise
     available  by  law;  or  (iii)  making,  on  a  confidential   basis,  such
     disclosures  as the  Purchaser  deems  necessary  or  appropriate  to  such
     Purchaser's legal counsel or accountants  (including outside auditors);  or
     (iv) making such disclosures as the Purchaser reasonably deems necessary or
     appropriate to any bank or financial  institution  or other entity,  and/or
     counsel to or other  representatives of such bank or financial  institution
     or other  entity,  to which the  Purchaser in good faith desires to sell an
     interest in any applicable investment or financing; provided, however, that
     such  bank,  financial  institution  or  other  entity  or  counsel  to  or
     representative  thereof,  agrees to take  reasonable  steps to maintain the
     confidentiality of such disclosures.

          (ii) The  Purchaser  shall have the right to review and approve,  such
     approval not to be unreasonably withheld, any public announcement or public
     filing made after the Closing Date relating to the Note or to the Purchaser
     in any way before any such  announcement  or filing is  announced or filed,
     provided,  however,  no review or approval  shall be required  for any such
     announcement  or  filing  required  to be  announced  or filed  by law.  In
     addition,  the Purchaser shall provide the Company an opportunity to review
     and approve any public  announcement  issued by the Purchaser  specifically
     relating to the Note,  such  approval  not to be  unreasonably  withheld or
     delayed; provided, however, no review or approval shall be required for any
     such announcement  required to be announced by law;  provided further,  the
     Purchaser  shall provide the Company with an advance copy of any regulatory
     filings or  tombstone  ads prepared by or on behalf of the  Purchaser,  but
     shall not be required to obtain approval by the Company.

     (l) Governing Law. This Agreement  shall be governed in all respects by the
laws of the State of North Carolina.

     (m) Headings.  The descriptive  section  headings herein have been inserted
for  convenience  only and shall not be deemed to limit or otherwise  affect the
construction of any provisions hereof.

     (n) Multiple  Originals.  This Agreement may be executed  simultaneously in
two or more  counterparts,  each of which  shall be deemed an  original,  and it
shall not be necessary  in making proof of this  Agreement to produce or account
for more than one such counterpart.

     (o) Amendment or Waiver. This Agreement may be amended, and the Company may
take any action herein prohibited, or omit to perform any act herein required to
be performed by it, if the Company shall obtain the prior written consent of the
Required  Purchasers  to such  amendment,  action or omission to act;  provided,

                                       42
<PAGE>

however,  that, without the prior written consent of each of the Purchasers,  no
such  agreement  shall (i)  decrease  the  principal  amount  of, or extend  the
maturity date of any Note, or decrease the rate of interest on the Note, without
the prior written consent of each Purchaser  affected  thereby,  (ii) effect any
waiver,  amendment  or  modification  that  by its  terms  changes  the  amount,
allocation,  payment of or between the Note,  or (iii) amend the  provisions  of
this Section 11(o),  the definition of the term "Required  Purchasers" or of the
term  "Note".  Each  holder  of  the  Note,  at the  time  or  times  thereafter
outstanding,  shall be bound by any consent authorized by this Section,  whether
or not the Note shall have been marked to indicate such consent.

     (p)  Waiver of Jury  Trial.  THE  PURCHASER  AND THE  COMPANY  EACH  HEREBY
KNOWINGLY,  VOLUNTARILY  AND  INTENTIONALLY  WAIVE (TO THE EXTENT  PERMITTED  BY
APPLICABLE  LAW)  ANY  RIGHT TO A TRIAL BY JURY OF ANY  DISPUTE  ARISING  UNDER,
RELATING TO, OR  CONNECTED  WITH THIS  AGREEMENT,  THE  COLLATERAL  OR ANY OTHER
AGREEMENT,  INSTRUMENT OR DOCUMENT  CONTEMPLATED HEREBY OR DELIVER IN CONNECTION
HEREWITH AND AGREE THAT ANY SUCH DISPUTE  SHALL BE TRIED BEFORE A JUDGE  SITTING
WITHOUT A JURY. THIS PROVISION IS A MATERIAL INDUCEMENT FOR THE PARTIES TO ENTER
INTO THIS AGREEMENT.

     (q)  Consent  to  Jurisdiction   and  Service  of  Process.   All  judicial
proceedings brought against the Company with respect to this Agreement, the Note
or any of the other Transaction Documents may be brought in any state or federal
court  of  competent  jurisdiction  in the  State  of North  Carolina,  and,  by
execution and delivery of this Agreement, the Company accepts, for itself and in
connection with its properties, generally and unconditionally, the non-exclusive
jurisdiction of the aforesaid  courts and irrevocably  agrees to be bound by any
final judgment  rendered thereby in connection with this Agreement from which no
appeal has been taken or is available.  The Company  irrevocably agrees that all
service of process in any such  proceedings in any such court may be effected by
mailing a copy thereof by  registered  or certified  mail (or any  substantially
similar  form of  mail),  postage  prepaid,  to it at its  address  set forth in
Schedule  11(i) or at such other address of which the Purchaser  shall have been
notified pursuant thereto, such service being hereby acknowledged by the Company
to be effective and binding service in every respect. Each of the parties hereto
irrevocably waives any objection,  including,  without limitation, any objection
to the laying of venue or based on the grounds of forum non conveniens  which it
may now or hereafter  have to the bringing of any such action or  proceeding  in
any such jurisdiction. Nothing herein shall affect the right to serve process in
any other manner  permitted by law or shall limit the right of the  Purchaser to
bring proceedings against the Company in the court of any other jurisdiction.

     (r) Arbitration.

          (i)  Notwithstanding  the provisions of Section 11(q) to the contrary,
     upon demand of any party hereto, whether made before or within three months
     after  institution  of any  judicial  proceeding,  any  dispute,  claim  or
     controversy  arising out of,  connected  with or relating to this Agreement
     and other Transaction  Documents  ("Disputes")  between or among parties to

                                       43
<PAGE>

     this Agreement shall be resolved by binding arbitration as provided herein.
     Institution of a judicial proceeding by a party does not waive the right of
     that party to demand arbitration hereunder.  Disputes may include,  without
     limitation, tort claims, counterclaims,  disputes as to whether a matter is
     subject to  arbitration,  claims brought as class  actions,  claims arising
     from Transaction Documents executed in the future, or claims arising out of
     or connected with the transactions reflected by this Agreement. Arbitration
     shall be conducted under and governed by the Commercial  Arbitration  Rules
     (the  "Arbitration  Rules") of the American  Arbitration  Association  (the
     "AAA") and Title 9 of the U.S.  Code.  All  arbitration  hearings  shall be
     conducted in  Charlotte,  North  Carolina.  A hearing shall begin within 90
     days of demand for arbitration,  and all hearings shall be concluded within
     120 days of demand  for  arbitration.  These  time  limitations  may not be
     extended  unless a party shows cause for  extension and then no more than a
     total  extension of 60 days. The expedited  procedures set forth in Rule 51
     et seq. of the Arbitration Rules shall be applicable to claims of less than
     $1,000,000.  All  applicable  statutes  of  limitation  shall  apply to any
     Dispute.  A  judgment  upon the award may be  entered  in any court  having
     jurisdiction.  Arbitrators  shall be licensed  attorneys  selected from the
     Commercial  Financial  Dispute  Arbitration  Panel of the AAA.  The parties
     hereto do not waive applicable  federal or state  substantive law except as
     provided herein.

          (ii)  Notwithstanding  the preceding binding  arbitration  provisions,
     each  of the  parties  agrees  to  preserve,  without  diminution,  certain
     remedies that the Purchaser may employ or exercise freely, independently or
     in connection with an arbitration proceeding or after an arbitration action
     is brought.  The Purchaser  shall have the right to proceed in any court of
     proper  jurisdiction or by self-help to exercise or prosecute the following
     remedies,  as  applicable  (A) all rights to foreclose  against any real or
     personal  property or other  security by exercising a power of sale granted
     under  Transaction  Documents  or  under  applicable  law  or  by  judicial
     foreclosure  and sale,  including a proceeding to confirm the sale; (B) all
     rights of self-help  including  peaceful  occupation  of real  property and
     collection of rents, set-off, and peaceful possession of personal property;
     (C)  obtaining  provisional  or  ancillary  remedies  including  injunctive
     relief, sequestration, garnishment, attachment, appointment of receiver and
     filing an involuntary  bankruptcy  proceeding;  and (D) when applicable,  a
     judgment by confession of judgment. Preservation of these remedies does not
     limit the power of an  arbitrator  to grant  similar  remedies  that may be
     requested by a party in a Dispute.

          (iii) The  parties  hereto  agree that they shall not have a remedy of
     punitive or exemplary  damages  against the other in any Dispute and hereby
     waive any right or claim to punitive or exemplary damages against the other
     in any Dispute and hereby waive any right or claim to punitive or exemplary
     damages they have now or which may arise in the future in  connection  with
     any Dispute whether the Dispute is resolved by arbitration or judicially.

          (iv) By execution and delivery of this Agreement,  each of the parties
     hereto accepts, for itself and in connection with its properties, generally
     and  unconditionally,   the  non-exclusive  jurisdiction  relating  to  any
     arbitration proceedings conducted under the Arbitration Rules in Charlotte,
     North  Carolina and  irrevocably  agrees to be bound by any final  judgment
     rendered thereby in connection with this Agreement from which no appeal has
     been taken or is available.

     (s) Parent Covenants;  Parent  Representations.  For purposes of Sections 7
and 9 of this Agreement,  it is understood and agreed that the Company shall use
commercially  reasonable  efforts to cause the  Parent to comply  with the terms
thereof. For purposes of Section 5, all representations and warranties as to the
Parent  by the  Company  shall  be  deemed  to be made to the  knowledge  of the
Company.

                                       44
<PAGE>

     (t)  Authorization of Motorola  Transactions.  The Company is authorized to
enter into reimbursement, service acquisitions and/or purchase transactions with
Motorola  with  respect to the  Company's  acquisition  of new  telecom  network
equipment products.

                  [Remainder of page intentionally left blank.]

                                       45
<PAGE>

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

                                   HORIZON PERSONAL COMMUNICATIONS, INC.
                                   an Ohio corporation

                                   By:____________________________
                                   Name:__________________________
                                   Title:_________________________

                                   FIRST UNION INVESTORS, INC.,
                                   a North Carolina corporation

                                   By:_____________________________
                                   Name:___________________________
                                   Title:__________________________

                              46
<PAGE>

                                  SCHEDULE 4(E)

                              FINANCIAL INFORMATION

1.   Unaudited  pro forma  consolidated  balance  sheet for the  Company and its
     Subsidiaries  as of, and for the period  ended,  December 31, 1999,  giving
     effect  to  the  Acquisition  and  the  transactions  contemplated  by  the
     Agreement, certified by the chief financial officer of the Company.

2.   Unaudited  consolidated financial statements for the Company as of, and for
     the period  ended,  December  31,  1997  certified  by the chief  financial
     officer of the Company.

3.   Audited  financial  statements  for the  Company and its  Subsidiaries  for
     fiscal years ending December 31, 1998 and a draft of the audited  financial
     statements for the fiscal year ending December 31, 1999,  accompanied by an
     audit report from Arthur Andersen, LLP, such report to be in customary form
     and unqualified.

4.   Financial  projections for the Company and its Subsidiaries for each fiscal
     year after the Closing  Date  through  fiscal  2009,  giving  effect to the
     Acquisition and the  Investment,  and certified with respect to current and
     projected financial covenant compliance in form and substance  satisfactory
     to the Purchaser.

5.   Such other financial information relating to the Company, the Parent, their
     Subsidiaries or the Acquisition as the Purchaser may reasonable request.

6.   Internally prepared monthly historical  operating  statistics  certified by
     Company  evidencing by market the degrees of market  penetration,  coverage
     and  subscriber  counts  (among  other  items)  in a form  satisfactory  to
     Purchaser.

                                       47
<PAGE>

                                  SCHEDULE 5(A)

                             ORGANIZATIONAL MATTERS

A.       Organization
         ------------
                             Jurisdiction of  Jurisdictions in
Name of Company              Organization     Which Qualified
---------------              ------------     ---------------

Horizon Personal             Ohio             Virginia, West Virginia, Kentucky
Communications, Inc.

Horizon Telcom, Inc.         Ohio

The Chillicothe Telephone    Ohio
Company

Horizon Services, Inc.       Ohio

United Communications, Inc.  Ohio

B.       Licenses and Permits
         --------------------

Name of Company                  Licenses and Permits
---------------                  --------------------

Company                          Federal         Communications
                                 Commission  license to provide
                                 Broadband     PCS     wireless
                                 telecommunications    in   the
                                 Chillicothe BTA.

The                              Chillicothe  Telephone Company
                                 Certification  from the Public
                                 Utility  commission of Ohio to
                                 be a local exchange carrier.

United Communications, Inc.      Federal Communications Commission
                                 licenses to provide paging services in Ohio.

                                       48
<PAGE>

                                  SCHEDULE 5(B)

                          SUBSIDIARIES AND INVESTMENTS

     1. The  Chillicothe  Telephone  Company  is a wholly  owned  subsidiary  of
Parent.

     2. Horizon Services, Inc. is a wholly owned subsidiary of Parent.

     3. United Communications, Inc. is a wholly owned subsidiary of Parent.

     4.  The  Company  owns an  approximate  25%  interest  in  Bright  Personal
Communication Services, LLC, an Ohio limited liability company.

                                       49
<PAGE>

                                  SCHEDULE 5(C)

                                 CAPITALIZATION

XII. Pre-Closing Capitalization of the Company and the Parent

     A. Authorized Capital

        Name of Company                 Authorized Capital
        ---------------                 ------------------
        Horizon Personal                1,000,000 shares of Class A Common Stock
           Communications, Inc.         1,000,000 shares of Class B Common Stock

        Horizon Telcom, Inc.            200,000 shares of Class A Common Stock
                                        500,000 shares of Class B Common Stock

     B. Subscriptions, Contracts and Agreements

     None,  except (i) stock  options were  granted to certain  employees of the
     Company  pursuant  to the 1999 Stock  Option Plan (ii) stock  options  were
     granted to certain  individuals  associated with the Parent pursuant to the
     1999 Stock  Option  Plan and (iii) the stock of the  Company was pledged by
     Parent to the Rural Telephone Finance  Cooperative  pursuant to that Pledge
     and Security  Agreement,  dated August 29, 1997, by and between  Parent and
     Rural Telephone Finance Cooperative.

     C. Directors, Officers, Partners and Security Holders

     The  Chillicothe  Telephone  Company,  Horizon  Services,  Inc., and United
     Communications,  Inc.  are  wholly-owned  subsidiaries  of the Parent.  The
     Company is wholly owned by Parent,  except as set forth herein.  Please see
     the attached for a list of stockholders and the number of shares owned.

                              Officer and Directors
         Parent
         ------
         Thomas McKell        President, Director
         Robert McKell        Chairman of the Board, Director
         Jack Thompson        Vice President/Secretary/Treasurer, Director
         Phoebe McKell        Assistant Secretary
         David McKell         Director
         Helen Sproat         Director
         Joseph G. Kear       Director
         Joseph S. McKell     Director
         John Herrnstein      Director

                                       50
<PAGE>

         Company
         -------
         William A. McKell    President, Director
         William Murton       Director
         Steven P. Burkhardt  Secretary/Treasurer, Director
         Joseph Corbin        Vice President-Operations
         Peter M. Holland     CFO/Vice President-Finance
         Joseph Watson        Vice President-Administration

         The Chillicothe Telephone Company
         ---------------------------------
         Thomas McKell        President, Director
         Jack Thompson        Vice President-Finance/Secretary/Treasurer,
                                    Director
         John Wilson          Vice President-Administration, Director

         United Communications, Inc.
         ---------------------------
         William A. McKell    President, Director
         Joseph J. Watson     Vice President, Director
         Steven P. Burkhardt  Secretary/Treasurer, Director

         Horizon Services, Inc.
         ----------------------
         Phoebe McKell        President, Director
         Jack Thomas          Vice President/Secretary/Treasurer, Director
         Robert McKell        Director

     D. Preemptive and Registration Rights

     The Class A Stock of Parent has preemptive rights to all but Class B Stock,
     pursuant to the Articles of Incorporation of the Parent and the Ohio Code.

     All stock of the Company has the  preemptive  rights  contained in the Ohio
     Code.

     All stock of the Subsidiaries  has preemptive  rights contained in the Ohio
     Code.

                                       51
<PAGE>

                                  SCHEDULE 5(E)

                                   LITIGATION

     None.

                                       52
<PAGE>

                                  SCHEDULE 5(F)

                                   TAX MATTERS

     The Internal Revenue Service audited the consolidated entities (the Parent,
the Company and the  Subsidiaries)  for the years 1996 and 1997 and the Internal
Revenue  Service  and the  Company  settled  the  deficiency  at the  amount  of
$117,134. Interest has not been assessed.

                                       53
<PAGE>

                                  SCHEDULE 5(H)

                         GOVERNMENT APPROVALS; CONSENTS

     Consent  and  waiver  to be  obtained  from  the  Rural  Telephone  Finance
Cooperative.

     Consent and waiver to be obtained from Motorola, Inc.

                                       54
<PAGE>

                                  SCHEDULE 5(M)

                                   PROJECTIONS

     See attached.

                                       55
<PAGE>

                                  SCHEDULE 5(o)

                        TITLE TO PROPERTIES AND ASSETS

     The Company has entered  into that  certain  Master Site  Agreement,  dated
August 17, 1999,  by and between SBA Towers,  Inc. and the Company,  pursuant to
which the Company has the rights to use cell sites and cell towers.

                                       56
<PAGE>

                                  SCHEDULE 5(p)

                               MATERIAL CONTRACTS

1.   Assignment  Agreement,  dated  February 15, 2000, by and between Parent and
     Company

2.   Asset  Purchase  Agreement,  dated August 17, 1999,  by and among  Company,
     Parent and SBA Towers, Inc.

3.   Site  Development  Agreement,  dated  August 17,  1999,  by and between the
     Company and SBA Towers, Inc.

4.   Master Site  Agreement,  dated August 17, 1999,  by and between SBA Towers,
     Inc. and the Company.

5.   Master  Design Build  Agreement,  dated August 17, 1999, by and between the
     Company and SBA Towers, Inc.

6.   Loan Agreement, dated August 29, 1997, by and between the Company and Rural
     Telephone Finance Cooperative.

7.   Secured  Promissory Note, dated August 29, 1997, by and between the Company
     and Rural Telephone Finance Cooperative.

8.   Guaranty,  dated August 29, 1997, by and between Parent and Rural Telephone
     Finance Cooperative.

9.   Reimbursement and Security  Agreement,  dated August 29, 1997, by and among
     Parent and the Company and Motorola, Inc.

10.  Sprint PCS  Management  Agreement,  dated June 8, 1998, by and among Sprint
     Spectrum, L.P., SprintCom, Inc. and the Company.

11.  Network  Services  Agreement,  dated  August  12,  1999,  by and among West
     Virginia PCS Alliance, L.C., Virginia PCS Alliance, L.C. and the Company.

12.  Sprint PCS Services Agreement,  dated June 8, 1998, between the Company and
     Sprint PCS.

13.  Revolving Line of Credit  Application and Agreement  (OH-S-02),  dated June
     25, 1998 by and between Rural Telephone  Finance  Cooperative and Parent as
     amended by that certain Term Extension for RTFC Line of Credit,  dated June
     25, 1998, by and between Rural Telephone Finance Cooperative and Parent.

                                       57
<PAGE>

14.  Service  Agreement,  dated August 20, 1999,  by and between the Company and
     Bright Personal Communications Services, LLC.

15.  Tax  Allocation  Agreement,  by and  among the  Company,  the  Parent,  The
     Chillicothe  Telephone  Company,  United  Communications,  Inc. and Horizon
     Services, Inc.

16.  Services  Agreement  between  Horizon  Services,  Inc.,  the  Company,  the
     remaining Subsidiaries and the Parent,  pursuant to which Horizon Services,
     Inc. provides accounting, human resources, date processing and MIS services
     at cost.

17.  Mortgage  and  Security  Agreement,  dated  August 29, 1999  between  Rural
     Telephone Finance Cooperative and the Company.

18.  Operating Agreement of Bright Personal Communications Services, LLC, by and
     among the Company and the other members.

19.  Equipment Purchase Agreement by and between the Company and Motorola, Inc.

20   Pledge and Security Agreement, dated August 29, 1997, by and between Parent
     and Rural Telephone Finance Cooperative.

21.  Sprint Trademark and Service Mark License Agreement.

                                       58
<PAGE>

                                  SCHEDULE 5(Q)

                                    EMPLOYEES

A.   Employment Arrangements:

     Union contract by and between IBEW Local 578 and The Chillicothe  Telephone
Company.

B.   Severance or Termination Pay:

     None.

                                       59
<PAGE>

                                  SCHEDULE 5(S)

                               AFFILIATE CONTRACTS

Name of Affiliate                           Description of Contract
-----------------                           -----------------------

Bright Personal Communication Services      Service Agreement, dated
                                            August 20, 1999, by    and
                                            between the Company and
                                            Bright Personal Communications
                                            Services, LLC.

Parent, Company and the Subsidiaries        Tax Allocation  Agreement,  by and
                                            among the Company,  the Parent, The
                                            Chillicothe Telephone  Company,
                                            United  Communications,  Inc.  and
                                            Horizon Services, Inc. Parent,
                                            Company and the Subsidiaries
                                            Services Agreement between Horizon
                                            Services, Inc., the Company, the
                                            remaining Subsidiaries and   the
                                            Parent, pursuant to  which Horizon
                                            Services, Inc. provides accounting,
                                            human resources, date processing and
                                            MIS services at cost.

Parent and Company  Assignment  Agreement   dated as of February 15, 2000, by
                                            and between Parent and Company.

                                       60
<PAGE>

                                  SCHEDULE 5(T)

                              ENVIRONMENTAL MATTERS

     None.

                                       61
<PAGE>

                                  SCHEDULE 5(X)

                                 USE OF PROCEEDS

     The  proceeds  from the  issuance of the Note will be used to: (i) finance
the Acquisition;  (ii) pay the loan origination fee to Purchaser; (iii) pay fees
and expenses incurred in connection with the negotiation and consummation of the
transactions contemplated by this Agreement and the Acquisition and (iv) provide
for working capital requirements and for general corporate purposes.

                                       62
<PAGE>

                                  SCHEDULE 5(Y)

                             EMPLOYEE BENEFIT PLANS

         Company 401(k)

         The Chillicothe Telephone Company 401(k)

         Horizon Services, Inc. 401(k)

         Horizon Services, Inc. Deferred Compensation Plan

         Each of the Subsidiaries and the Company have the following plans:

                  1)       Medical
                  2)       Dental
                  3)       Vision
                  4)       Education Reimbursement

         In addition,  the Company has a Bonus program, but any bonus awarded is
         subject to the discretion of the Directors and Officers of the Company.

                                       63
<PAGE>

                                  SCHEDULE 5(Z)

                              INTELLECTUAL PROPERTY

     The  Company  licenses  the Sprint  mark and Sprint  PCS mark  through  the
following agreements:

     1. Sprint PCS Management Agreement, dated June 8, 1998, by and among
Sprint Spectrum, L.P., SprintCom, Inc. and the Company.

     2. Sprint PCS Services  Agreement,  dated June 8, 1998, between the Company
and Sprint PCS.

     3. Sprint Trademark and Service Mark License Agreement.

                                       64
<PAGE>

                                 SCHEDULE 5(AA)

                      ABSENCE OF CERTAIN CHANGES OR EVENTS

     None.

                                       65
<PAGE>

                                 SCHEDULE 5(BB)

                                    INSURANCE

     See attached.

                                       66
<PAGE>

                                  SCHEDULE 9(B)

                                  INDEBTEDNESS

1.  Loan Agreement, dated August 29, 1997, by and between the        $23,557,965
    Company and Rural Telephone Finance Cooperative.
2.  $9,000,000 Revolving Loan Agreement between RFTC and the Parent   $7,798,556
3.  Intercompany payable from the Company to the Parent               $7,798,556

                                       67
<PAGE>

                                  SCHEDULE 9(C)

                                      LIENS

1.   In connection with the Credit Agreement between RTFC and the Company,  RTFC
     has a Lien on substantially all of the assets of the Company.

                                       68
<PAGE>

                                  SCHEDULE 9(E)

                                   INVESTMENTS

1.   Subordinated Capital Certificates in RFTC in the amount of $1,177,898

                                       69
<PAGE>

                                 SCHEDULE 10(I)

                              ADDRESSES FOR NOTICES

If to the Company, to:

                  Horizon Personal Communications, Inc.
                  P O Box 480
                  68 East Main Street
                  Chillicothe, Ohio  45601
                  Telecopy No.:  (740) 772-8547
                  Attention:  Pete Holland

         with a copy (which shall not
         constitute notice) to:

                  Arnall Golden & Gregory, LLP
                  Suite 2800 One Atlantic Center
                  1201 West Peachtree Street
                  Atlanta, Georgia  30309-3450
                  Attention:  Donald I. Hackney, Jr., Esq.

If to the Purchaser, to:

                  First Union Investors, Inc.
                  One First Union Center, 5th Floor
                  301 South College Street
                  Charlotte, NC  28288
                  Telecopy No.:  (704) 374-4092
                  Attention:  Mr. John M. Burlingame

         with a copy (which shall not
         constitute notice) to:

                  Moore & Van Allen, PLLC
                  NationsBank Corporate Center
                  100 North Tryon Street, 47th Floor
                  Charlotte, North Carolina  28202
                  Telecopy No.:  (704) 331-1159
                  Attention:  John S. Chinuntdet, Esq.CONFIDENTIAL TREATMENT REQUESTED

     Confidential Portions of this Agreement Which Have Been Redacted Are Marked
With  ("[***]").  The  Omitted  Material  Has  Been  Filed  Separately  With The
Securities and Exchange Commission.

                              MASTER SITE AGREEMENT

                                 by and between

                                SBA TOWERS, INC.

                                       and

                      HORIZON PERSONAL COMMUNICATIONS, INC.

<PAGE>
                        CONFIDENTIAL TREATMENT REQUESTED

                              MASTER SITE AGREEMENT

     THIS MASTER SITE AGREEMENT  (this "MSA") is made and entered into this ____
day of July,  1999 (the "Date of this MSA"),  by and  between  SBA Towers,  Inc.
("SBA"), and Horizon Personal Communications, Inc. ("Horizon").

                                    RECITALS:

     WHEREAS,  Horizon and Horizon Telcom,  Inc. have sold or has agreed to sell
to SBA fifty-six (56) towers and related  improvements ("SBA  Improvements") and
in connection  therewith  has either  conveyed or agreed to convey to SBA all of
Horizon's and Horizon  Telcom,  Inc.'s  right,  title and interest in and to the
land upon which the towers  were  constructed  or has  assigned or has agreed to
assign  to  SBA  all  of  Horizon's  right,  title  and  interest  in and to the
underlying   leases,   licenses  or   easements  as  set  forth  in  Schedule  1
(collectively, the "Ground Leases") attendant to those towers and related assets
purchased  pursuant  to the terms of the Asset  Purchase  Agreement  (the "APA")
entered into by and among SBA, Horizon,  and Horizon Telcom,  Inc. dated the ___
day of July, 1999 (individually a "Tower", collectively the "Towers");

     WHEREAS, SBA and Horizon desire to enter into this MSA which will establish
the general terms and conditions whereby SBA will lease to Horizon space on each
of the Towers and lease or sublease ground space on land in the vicinity of each
of the Towers  conveyed  by Horizon to SBA  pursuant  to the APA (real  property
owned or leased by SBA with respect to each Site (as defined  below)),  together
with  any  and  all  easements  required  for  access  and  utilities  or  other
appurtenances  (hereinafter  referred to as a "Property" and collectively as the
"Properties);

     WHEREAS,  SBA and Horizon have  executed  that certain  Master Design Build
Agreement  ("BTS  Agreement")  contemporaneously  with the execution of this MSA
which provides for the design,  development and  construction of new tower sites
("BTS Sites");

     WHEREAS,  SBA and Horizon have agreed that in the event that Horizon issues
to SBA  Search  Rings  in  Region  2, as  those  terms  are  defined  in the BTS
Agreement,  then Horizon shall have the obligation to lease space on twenty (20)
existing towers owned by SBA in Region 2;

     WHEREAS,  this MSA  shall  govern  the sites  conveyed  by  Horizon  to SBA
pursuant to the APA  ("Conveyed  Sites") and which are developed by SBA pursuant
to the BTS  Agreement  ("BTS  Sites") and which are  already  owned by SBA ("SBA
Sites")  provided (as  hereinafter  defined) that certain  terms,  covenants and
conditions of this MSA may vary, dependent upon whether the Site was conveyed by
Horizon to SBA  pursuant to the APA,  is  developed  by SBA  pursuant to the BTS
Agreement, or is already owned by SBA; and

     WHEREAS,  SBA and Horizon will enter into a Site  Agreement  ("SLA")  which
will  establish  the terms for use of  Conveyed  Sites and BTS Sites in form and
substance  substantially  similar  to  Attachment  "A"  attached  hereto  and by
reference made a part hereof;

                                       1
<PAGE>

     NOW,  THEREFORE,  for good and  valuable  consideration,  the  receipt  and
sufficiency of which are hereby acknowledged,  the parties hereto,  intending to
be legally bound hereby, agree as follows:

     1. MSA. This MSA sets forth the general terms and conditions upon which all
Sites shall be leased to Horizon. SBA and Horizon shall execute SLAs in the form
attached  hereto as Attachment  "A" for each Site conveyed by Horizon to SBA and
by  reference  made a part  hereof at the  closing  anticipated  by the APA with
respect to the  Conveyed  Sites.  SBA and Horizon  shall also execute an SLA for
each BTS Site in accordance  with the provisions of paragraph  2.7(b) of the BTS
Agreement  as such  Sites  arc  identified  from  time to time.  Each SLA  shall
identify a particular Site, as that term is defined below,  made subject to this
MSA. In the event of a conflict or  inconsistency  between the terms of this MSA
and a SLA, the terms of the SLA shall govern and control for that Site.

     2. Site.

          (a) Subject to the following terms and  conditions,  SBA hereby grants
Horizon  the  right  to  install,   maintain  and  operate  Horizon's   wireless
communications  equipment  and  appurtenances  on  space on the  Tower  which is
adequate to allow the installation of the Equipment,  as that term is defined in
this paragraph 2, with sufficient  separation from the equipment owned by SBA or
any  equipment  which is owned or operated by a sublessee  or licensee of SBA as
may be  necessary  to prevent  interference  with the  Equipment  as provided in
paragraph 6 of this MSA ("Tower Space") together with ground space that will not
exceed two hundred fifty (250) square feet on each Property as described in this
paragraph  2  ("Ground  Space")  with  non-exclusive  easements  for  access and
utilities to the Ground Space (collectively the "Easement").  Horizon shall have
exclusive  control and dominion of the Tower Space and the Ground Space provided
that SBA and other tenants of the Property shall have a non-exclusive, temporary
construction  easement over the Site, as that term is hereinafter defined, as is
reasonable  and  necessary  for the  maintenance,  repair  and  installation  of
equipment on the Tower,  but in no event may SBA or any other entity  disturb or
interfere  with the  operations  conducted by Horizon of the Site in  performing
these  activities.  In  no  event  shall  SBA  install  or  allow  its  lessees,
sublessees,  licensees or other  entities  which are granted the right by SBA to
occupy the Property to install any  improvements  below,  on or above the Ground
Space. The Tower Space,  Ground Space,  Easements and Cable Path (as hereinafter
defined) as to any Property may be collectively referred to herein as a "Site."

          (b) Subject to the terms and conditions of this MSA, SBA hereby agrees
to lease each of the Sites to Horizon. SBA further grants and assigns to Horizon
the  non-exclusive  rights:  (i) to utilize portions of any utility Easement for
the  installation and maintenance of utilities,  cables,  conduits and pipes for
the  providing of necessary  utility  service  (including,  without  limitation,
electrical  and  telecommunications  service) to the Equipment  (as  hereinafter
defined);  (ii) to  utilize  the  Property  including  any  ingress  and  egress
easements for pedestrian and vehicular access to and from the Site; and (iii) to
use a  portion  of the  ground  and space on the Tower to  install  cabling  and

                                       2
<PAGE>

utilities for  connecting and linking the Tower Space with the Ground Space (the
"Cable Path"). Horizon shall be entitled to enter the Site on a twenty-four (24)
hour, seven (7) days per week basis during the SLA Term.  Horizon shall give SBA
verbal notice not less than twenty four hours prior to a scheduled  ascension of
a Tower by Horizon or its agents or contractors.  In the event that Horizon must
ascend a Tower for exigent  circumstances  it shall provide verbal notice of the
ascension  of the  Tower  within  twenty  four  (24)  hours  after the tower was
ascended.

          (c) Subject to  paragraph  2(d) with  respect to the  Conveyed  Sites,
Horizon  shall have the right to maintain,  operate,  replace,  reconfigure  and
upgrade on any given Site any equipment which has been installed on a Site prior
to the Date of this MSA including without  limitation any existing PCS antennas,
microwave dishes and related cabling and equipment mounted on the Towers,  above
and below ground  conduit,  RBS  cabinets  and related  equipment on the ground,
cabinetry  and shelters for the  microwave  facilities  and related  cabling and
equipment  on the ground  ("Grandfathered  Equipment").  Within one  hundred and
eighty  (180) days of the  commencement  date of an SLA,  SBA,  with  reasonable
cooperation from Horizon,  shall compile a list of the  Grandfathered  Equipment
for each Site,  which list shall be reviewed and approved by Horizon.  SBA shall
provide Horizon copies of any documentation  including  photographs  relating to
the  Grandfathered  Equipment  in each  medium  in  which  this  information  is
maintained by SBA, including paper and electronic formats.

          (d)  Horizon  shall  have the  right  without  paying  any  additional
consideration to SBA, to install,  maintain,  operate, replace,  reconfigure and
upgrade  the  following  equipment  on each  Site:  (i) one (1) six foot  (6'0")
maximum  diameter  microwave  dish in  addition  to any  other  dishes  or other
microwave equipment which are included in the Grandfathered  Equipment;  (ii) up
to twelve  (12) panel  antennas  (including  any  Grandfathered  Equipment)  and
associated tower top amplifiers and connection boxes,  jumper cabling and twelve
(12) - 1 5/8" coaxial  cables;  and (iii) a generator and a generator  fuel tank
(including any Grandfathered  Equipment)  provided that Horizon shall obtain any
governmental  permits and approvals which are required for such activities.  SBA
acknowledges  and agrees that the  microwave  dish  installed  by Horizon on the
Tower need not be located  within the Tower Space,  provided that in such event,
Horizon  shall  locate the  microwave  dish on the Tower so as not to  adversely
affect the installation of another carrier's equipment on the Tower and to avoid
overloading the Tower when  considering the loads in existence as of the date of
installation  of the microwave dish. In the event that one or more of the Towers
conveyed by Horizon to SBA pursuant to the APA lack adequate  vertical  space or
structural or  windloading  capacity to accommodate a minimum of two (2) tenants
(each  utilizing a standard 12 panel broadband PCS array) in addition to Horizon
(taking into account the Grandfathered  Equipment only),  Horizon shall not have
the right to add additional equipment or reconfigure  Grandfathered Equipment to
any such Tower in such a manner that the  reconfigured  or additional  equipment
would place a greater  structural or windloading  burden on the Tower. SBA shall
have no obligation  with regard to such Conveyed Sites to reinforce,  upgrade or
replace the structure to accommodate the Equipment.  However,  in the event that
SBA chooses to replace a Tower on a Conveyed  Site, it shall be designed to have
adequate structural and wind loading capacity to accommodate the Equipment.

                                       3
<PAGE>

          (e)  Horizon  shall  have the  right  without  paying  any  additional
consideration to SBA, to install  maintain,  operate,  replace,  reconfigure and
upgrade on each Site any  Equipment  which may be located  within  Ground  Space
which will not exceed two hundred  fifty (250)  square  feet.  In  addition,  if
necessary to handle maximum traffic capacity,  Horizon shall also have the right
without  paying any  additional  consideration  to SBA,  to  install,  maintain,
operate,  replace,  reconfigure and upgrade on each Site  additional  electronic
equipment and related cabinetry within the Ground Space.

          (f) The Grandfathered  Equipment and the equipment and items specified
in paragraphs 2(c) and 2(d) shall  hereafter be referred to as the  "Equipment."
In no event shall  Horizon be required  to share the  Equipment  with SBA or any
other  occupant of a Site as a common  facility.  Horizon shall  maintain at its
expense the Equipment in accordance with applicable laws, codes,  ordinances and
regulations.

          (g)  Horizon  may  from  time to time  during  the SLA  Term  replace,
substitute  or  modify  any of the  Equipment.  Horizon  must  submit  plans and
specifications  of the  replacement  modification,  substitution  or  additional
equipment.  SBA shall have the right to cause an intermodulation study, but only
if the  Equipment  is  operating  at a New  Spectrum  as that term is defined in
paragraph  6(a).  SBA shall have the right to cause a structural  analysis to be
performed  using  such  plans and  specifications,  at  Horizon's  sole cost and
expense  but only in the event there  exists a  reasonable  likelihood  that the
windloading  or  structural  capacity  of the load  created by the  replacement,
modification,  substitution or additional equipment exceeds the loads created by
a full array of the Equipment when considering both the type, size and weight of
the antenna and  cabling  which is in use as of the Date of this MSA.  The plans
and  specifications  will be subject to SBA's approval,  such approval not to be
unreasonably   withheld,   delayed  or  conditioned.   The  costs  of  any  such
intermodulation  study or structural  analysis shall not exceed the market rates
for said  services.  It will be  unreasonable  for SBA to reject  such plans and
specifications if the equipment described in the plans (i) does not increase the
wind load or  structural  burden upon the Site above that which would be created
by a full array of the Equipment when considering both the type, size and weight
of the antenna and cabling which is in use as of the Date of this MSA, (ii) does
not  increase the leased  Tower or ground  space,  and (iii) does not create any
technical or radio frequency interference which interferes with the equipment or
network of other users who are then located upon the Site.

          (h) SBA shall not enter into any lease, sublease, license or other
occupancy  agreement (or any amendment or  modification  thereof)  affecting the
Property or the Tower or permit the  installation  of any  equipment  that would
have the effect of (i)  restricting or impairing  Horizon's right to install and
use at any time  during  the SLA Term the full  amount  of the  Equipment;  (ii)
violating any federal,  state or local law,  regulation or ordinances;  or (iii)
impairing  Horizon's access to the Equipment.  In connection with the foregoing,
SBA shall require any structural report or analysis obtained by SBA or any other
proposed  sublessee,  licensee  or other  occupant  of the Tower to  assume  and
incorporate  the  utilization of the full amount of the Equipment  regardless of
whether the full amount of the  Equipment  has been  installed as of the date of
the report or analysis.  In the event of a violation of this Paragraph 2(h) that
is not cured within  thirty (30) days after SBA's  receipt of written  notice of

                                       4
<PAGE>
                                        [***] - CONFIDENTIAL TREATMENT REQUESTED

such  violation,  Horizon may (without being  obligated to do so and in addition
to, and not in lieu of any other remedy available to Horizon on account thereof)
seek  the  enforcement  of this  Paragraph  2(h)  against  SBA  and  any  entity
participating in such violation, including the seeking of equitable relief.

          (i) The Equipment  shall remain the exclusive  property of Horizon and
Horizon  shall have the right to remove all or any portion of the  Equipment  at
any time during the SLA Term.  Horizon shall remove the Equipment  from the Site
within thirty (30) days after the  expiration or any earlier  termination of any
SLA  subject to any rights that SBA may have in and to certain  alterations  and
improvements  to the Site as set forth in this MSA.  Horizon  shall  repair  any
damage  caused by such  removal.  In the event that  Horizon does not remove its
Equipment from a Site on or before the expiration or earlier  termination of the
applicable SLA, then Horizon shall pay as hold-over  rental for the period after
the date of the  termination  or  earlier  expiration  of the SLA a sum which is
equivalent to [***] of the rental rate which was accruing  immediately  prior to
the  expiration  or  termination  of the  applicable  SLA which  amount shall be
prorated through the date that the Equipment is removed from the Site.

          (j) Horizon and its employees,  agents,  consultants  and  contractors
shall be entitled to enter upon the Property for purposes of accessing  the Site
subject to the notice requirements of paragraph 2(b) of this MSA. SBA shall have
the  right  to  approve  those  contractors   engaged  by  Horizon  before  said
contractors  enter a Site  provided  that the approval of any  contractor by SBA
shall not be  conditioned or  unreasonably  withheld or delayed by SBA and, once
such an approval has been given,  shall apply to all Sites which are governed by
this MSA.

     3. Term.

          (a) MSA  Term.  The MSA term  shall  begin on the date of this MSA and
shall continue until the expiration or earlier termination of the last SLA which
remains subject to the terms of this MSA (the "MSA Term").

          (b) SLA Term and Renewal.  Subject to Paragraphs  3(c) and (d) of this
MSA, the initial term of each SLA for  Conveyed  Sites (the  "Initial SLA Term")
shall be [***],  which term  shall  begin on the date set forth in each such SLA
which shall be the Closing  Date as that term is defined in the APA.  Subject to
Paragraphs  3(c) and (d) of this MSA, the Initial SLA Term for BTS Sites and SBA
Sites shall be [***], which term shall begin on the earlier of the date which is
(i) [***] after the date that SBA  notifies  Horizon  that the Tower is suitable
for the  installation  of the  Equipment  or (ii)  the  date  at  which  Horizon
commences  the  installation  of the  Equipment.  The date upon  which  each SLA
commences for any Conveyed Site or BTS Site and each Antenna Site  Agreement (as
hereinafter  defined) for any SBA Site,  may  hereinafter  be referred to as the
"SLA  Commencement  Date."  The  Initial  SLA  Term,  together  with any and all
renewals and extensions thereof, shall be defined as the "SLA Term."

          (c) Subject to Paragraph  3(d) hereof,  without regard to whether such
rights  are or are not set  forth  in each SLA or  Antenna  Site  Agreement  and
further  provided  that  Horizon is not in default in the payment of Rent beyond

                                       5
<PAGE>
                                        [***] - CONFIDENTIAL TREATMENT REQUESTED

any applicable  cure period at the date of the  commencement of the Renewal Term
(as hereinafter  defined),  Horizon shall have the right but not the obligation,
to extend any SLA or Antenna Site Agreement,  [***],  additional  [***] (each, a
"Renewal Term").  Horizon's  sublease of the Site during each Renewal Term shall
be on the same terms and  conditions  as set forth herein except with respect to
rent and insurance as otherwise set forth herein. This MSA and each SLA and each
Antenna Site Agreement shall  automatically  renew for each  successive  Renewal
Term unless Horizon notifies SBA in writing of Horizon's  intention not to renew
any such SLA or Antenna  Site  Agreement  at least  sixty (60) days prior to the
expiration of the Initial SLA Term or the Renewal Term then in effect.

          (d) SBA hereby  covenants  and agrees that, so long as Horizon has not
exercised  its option to refrain from  renewing an SLA,  SBA shall  exercise any
right to renew the  Ground  Lease  (or  refrain  from  effecting  a  non-renewal
thereof,  as the case may be) applicable to such Site and shall not exercise any
right of  termination  of such Ground Lease (except as otherwise  provided under
this MSA) so that such  Ground  Lease  shall  continue  in full force and effect
during the Initial Term and all Renewal Terms available under such SLA.  Without
in any way  modifying  SBA's  obligation to renew each Ground Lease as described
above,  the SLA Term of any SLA shall not extend beyond the term  (including any
renewals   thereof)  of  the  Ground   Lease   applicable   to  such  Site  and,
simultaneously with the expiration or earlier termination of the Ground Lease in
accordance with its terms,  the applicable SLA shall also  terminate;  provided,
however,  that the foregoing shall not be deemed or construed to modify or limit
any of Horizon's rights of  nondisturbance or of cure under such Ground Lease or
under any other  agreement  with the lessor  under such  Ground  Lease  ("Ground
Lessor").  In the event that SBA and the Ground Lessor  hereafter enter into any
further  extensions or renewals of the Ground Lease,  SBA shall provide  written
notice thereof to Horizon within thirty (30) days of the execution thereof.

     4. Rent.

          (a) Sites; Initial Term and Renewal Term For Conveyed Sites.

                    (i)  During the  Initial  SLA Term of any SLA for a Conveyed
          Site,  Horizon  shall pay as annual rent for each SLA at such place as
          SBA may  specify in  writing  to Horizon  from time to time the sum of
          [***] in equal monthly  installments in the amount of [***] per month,
          in advance ("Rent").  The first monthly payment for each Site shall be
          due on the SLA  Commencement  Date for such Site. Rent for any partial
          month during the SLA Term or any renewal or extension thereof shall be
          prorated  and payable  according  to the actual  number of days in the
          calendar month for which such determination of Rent is to be made.

               (ii) On the third  anniversary of the SLA  Commencement  Date for
          each Conveyed Site and on each  anniversary of the  Commencement  Date
          for said Sites thereafter  throughout the Initial Term and any Renewal

                                       6
<PAGE>
                                        [***] - CONFIDENTIAL TREATMENT REQUESTED

          Term,  [***]  which  shall be  identified  by the  parties  by  mutual
          agreement  and by three  percent of the Rent  during  the  immediately
          prior year on the remaining [***] Conveyed Sites governed by this MSA.

          (b) Sites; Initial Term and Renewal Term For BTS Sites in Region 1.

               (i)  During  the  Initial  SLA  Term of any SLA for a BTS Site in
          Region 1 (for  purposes of this MSA,  Region 1 shall mean BTAs 23, 39,
          73, 78, 80, 126, 143, 155, 197, 233, 255, 280, 294, 342, 359, 424, and
          487 and any counties which are adjacent to these BTAs),  Horizon shall
          pay  annual  rent  for each SLA at such  place as SBA may  specify  in
          writing to Horizon from time to time the sum of [***] in equal monthly
          installments  in the amount of [***] per month,  in advance  ("Rent").
          The  first  monthly  payment  for  each  Site  shall be due on the SLA
          Commencement Date for such Site. Rent for any partial month during the
          SLA Term or any renewal or  extension  thereof  shall be prorated  and
          payable  according to the actual number of days in the calendar  month
          for which such determination of Rent is to be made.

               (ii)  Rent  Escalation.  On the  third  anniversary  of  the  SLA
          Commencement  Date  for  each  BTS  Site  in  Region  1,  and on  each
          anniversary  of  the  Commencement  Date  for  said  Sites  thereafter
          throughout  the  Initial  Term and any  Renewal  Term,  Rent  shall be
          increased by [***] of the Rent payable  during the  immediately  prior
          year.

          (c) Sites; Initial Term and Renewal Term For BTS Sites in Region 2.

               (i)  During  the  Initial  SLA  Term of any SLA for a BTS Site in
          Region 2 (for  purposes  of this  MSA,  Region 2 shall  mean BTA 229),
          Horizon  shall pay  annual  rent for each SLA at such place as SBA may
          specify in  writing  to Horizon  from time to time the sum of [***] in
          equal  monthly  installments  in the  amount  of [***] per  month,  in
          advance ("Rent"). The first monthly payment for each Site shall be due
          on the SLA Commencement Date for such Site. Rent for any partial month
          during  the SLA Term or any  renewal  or  extension  thereof  shall be
          prorated  and payable  according  to the actual  number of days in the
          calendar month for which such determination of Rent is to be made.

               (ii)  Rent  Escalation.  On the  first  anniversary  of  the  SLA
          Commencement  Date  for  each  SBA  Site  in  Region  2,  and on  each
          anniversary  of  the  Commencement  Date  for  said  Sites  thereafter
          throughout  the  Initial  Term and any  Renewal  Term,  Rent  shall be
          increased by [***] of the Rent payable  during the  immediately  prior
          year.

                                       7
<PAGE>
                                        [***] - CONFIDENTIAL TREATMENT REQUESTED

          (d) Sites; Initial Term and Renewal Term For SBA Sites.

               (i) In the  event  that  Horizon  issues to SBA  Search  Rings in
          Region 2, as defined in the BTS Agreement, then Horizon shall have the
          obligation  to enter into Antenna  Site  Agreements  (as  described in
          Paragraph  4(d)(iii))  for 20 SBA  Sites in Region 2 within 30 days of
          the  issuance  of such  Search  Ring.  During the first year of a term
          under  the  Antenna  Site  Agreement  for these 20 SBA  Sites,  [***].
          Thereafter,  Horizon  shall pay  annual  rent for each of these 20 SBA
          Sites at such place as SBA may specify in writing to Horizon from time
          to time the sum of [***] in equal monthly  installments  in the amount
          of [***] per month, in advance ("Rent"). The first monthly payment for
          each  Site  shall  be  due  on  the  first   anniversary  of  the  SLA
          Commencement Date for such Site. Rent for any partial month during the
          term or any renewal or extension thereof shall be prorated and payable
          according to the actual number of days in the calendar month for which
          such determination of Rent is to be made.

               (ii)  Rent  Escalation.  On the  first  anniversary  of  the  SLA
          Commencement  Date for each such SBA Site, and on each  anniversary of
          the commencement date for said Sites thereafter throughout the initial
          term and any renewal  term,  Rent shall be  increased  by [***] of the
          Rent payable during the immediately prior year.

               (iii) Antenna Site Lease  Agreement.  Horizon and SBA acknowledge
          and agree  that  this MSA  shall not apply to the SBA Sites  except as
          provided in this paragraph 4(d). SBA and Horizon agree that they shall
          execute the form of Antenna Site Lease  Agreement  attached  hereto as
          Attachment  "B"  for  each  of the 20 SBA  Sites  within  30  days  of
          Horizon's issuance of the first Search Ring in Region 2 to SBA.

          (e) Horizon shall have the right to use a direct  deposit  system with
regard to Rent  payments.  SBA agrees to  cooperate  with  Horizon in  providing
requisite  information to Horizon for such direct deposit. The implementation of
the direct deposit process shall be at Horizon's expense.

     5.  Permitted  Use.  Horizon may use each Site for:  (i) the  transmission,
relay and receipt of communication  signals utilizing any lawful frequencies via
the  Equipment,  (ii)  the  construction,   alteration,   maintenance,   repair,
replacement  and  relocation of the  Equipment in accordance  with the terms and
provisions  of this MSA and  (iii)  any  other  incidental  lawful  purposes  in
accordance with the terms and conditions hereof.

     6. Interference.

          (a)  Horizon's  use of  each  Site as  permitted  in  accordance  with
Paragraph 5 for the installation  and operation of the Equipment  (including any
microwave  dishes  installed and operated by Horizon pursuant to Paragraph 2(d))
shall constitute the "Senior Use" on the Property.  The Senior Use shall further

                                       8
<PAGE>

include any use or uses by substitute, modified or replacement antennas that are
installed within the Tower Space on account of damage, disrepair or obsolescence
of any of the  antennas  described  above or failure of such  antennas  to yield
optimum performance,  even if such substitute,  modified or replacement antennas
are of a  different  model or  manufacturer.  Horizon's  use of the Site for the
Senior Use shall be deemed for all  purposes the  senior-in-priority  use of the
Property.  It is  understood  that should the Equipment  operate at  frequencies
different from the frequencies than those which Horizon has authority to utilize
("New Spectrum") as of the Date of this MSA, the use of those  frequencies shall
not be a Senior Use for the  purpose  of  resolving  interference  with the then
existing  uses at that Site.  Notwithstanding  the  foregoing,  if Horizon shall
begin the operation of  frequencies  pursuant to a New Spectrum,  the use of the
New Spectrum shall thereafter constitute a Senior Use relative to any use of the
Property  which  commences  after  the  date of  commencement  of use of the New
Spectrum.  If the  equipment  which  is  operating  at the New  Spectrum  causes
interference  with  the  then  existing  equipment  at  the  Property  and  such
interference cannot be eliminated within five (5) business days after receipt by
Horizon of notice from SBA of the existence of interference, Horizon shall cease
the  operation  of the  Equipment  which is operating at the New Spectrum and is
causing  interference  (except  for  intermittent  operation  for the purpose of
testing, after performing maintenance,  repair,  modification,  replacement,  or
other action taken for the purpose of correcting such  interference)  until such
interference is corrected.

          (b) In the event that, as to any Site leased to Horizon pursuant to an
SLA, SBA enters into any lease, sublease or license agreement in the future with
any third party for other portions of the Property or the Tower, then SBA agrees
to require such lessee,  sublessee or licensee to install equipment of types and
operating at radio  frequencies  that will not cause  interference  to Horizon's
communications  operations being conducted from the Site. SBA agrees that in the
event such lessee, sublessee or licensee causes interference with the Equipment,
SBA will  require  such  sublessee  or licensee to take all steps  necessary  to
correct and eliminate the interference.  SBA will notify such lessee,  sublessee
or licensee of such interference  within 24 hours of receipt of such notice from
Horizon. If such interference cannot be eliminated within five (5) business days
after receipt by such  sublessee or licensee of notice from SBA of the existence
of  interference,  SBA  shall  cause  such  lessee,  sublessee  or  licensee  to
disconnect  the  electric  power  and shut down such  lessee's,  sublessee's  or
licensee's  equipment  (except  for  intermittent  operation  for the purpose of
testing,  after performing  maintenance,  repair,  modification,  replacement or
other action taken for the purpose of correcting such  interference)  until such
interference is corrected.  If such interference is not completely  rectified to
the satisfaction of Horizon within sixty (60) days after receipt by such lessee,
sublessee  or licensee of such  notice  from SBA,  SBA shall cause such  lessee,
sublessee or licensee to remove its antennas and equipment from the Property and
the Tower.

          (c)  Pursuant  to the  APA,  SBA has  assumed  leases,  subleases  and
licenses of the Property  and the Tower with respect to the Conveyed  Sites from
Horizon which contain covenants against interference and certain other covenants
relating  to  Horizon's  Senior Use of the Site.  SBA hereby  agrees to take all
reasonable  means necessary to enforce such covenants for the benefit of Horizon
upon Horizon's reasonable request, including without limitation the commencement
of appropriate legal actions or proceedings.

                                       9
<PAGE>

                                        [***] - CONFIDENTIAL TREATMENT REQUESTED

     7. Utilities.

          (a) Use by Horizon.  Horizon shall pay the cost of all electric power,
telephone  and other  utility  service  consumed  by  Horizon in  operating  the
Equipment  and shall make payment  therefor  when due directly to the  providing
utility or service  company before any lien,  fine,  penalty,  interest or other
charge may attach on account of nonpayment.

          (b) Use by SBA and  Others.  Except  for the cost of  electric  power,
telephone  and other  utility  service  consumed  by  Horizon in  operating  the
Equipment,  SBA  shall  pay or cause to be paid  the cost of all  utilities  and
services  utilized on the Property  directly to the providing utility or service
company before any lien, fine,  penalty,  interest or other charge may attach on
account  of  nonpayment.  SBA shall  not nor  shall it allow any third  party to
sub-meter  electricity at any Site from Horizon. SBA and any third party granted
a right to use the Property or a portion thereof in accordance with the terms of
this MSA may connect to the utility  improvements  which serve the Site provided
that said utilities  shall (i) be separately  metered from Horizon's  utilities,
(ii) not cause an undue  loading on the  electrical  service  when  taking  into
consideration the electrical load created by the Equipment which has been or may
be installed at the Site by Horizon and (iii) be insured on the  secondary  side
of the utility transformer which provides electrical service to the Site.

     8. Ground Lease Default:  Horizon's Right to Cure. Upon the occurrence of a
Monetary  or  Non-Monetary   Ground  Lease  Default,   as  hereinafter   defined
(collectively,  "Ground Lease  Defaults")  and without  limiting or  restricting
Horizon's rights or remedies under Paragraphs 9, 10 and 11 hereof, Horizon shall
be authorized to exercise the remedies set forth below in this Paragraph 8:

          (a) In the case of a default in the payment of rent due under a Ground
Lease or a default in any other obligation  imposed upon SBA as lessee under the
Ground  Lease the cure of which can be reduced to the payment of a monetary  sum
(a "Monetary Ground Lease Default"),  Horizon may, within or outside of any cure
period provided therefor in the Ground Lease or otherwise afforded to Horizon by
an  agreement  with the  Ground  Lessor,  pay to the  Ground  Lessor  any amount
required  under the Ground  Lease to cure such  default so that the Ground Lease
shall  remain in full  force and  effect,  including,  without  limitation,  any
interest,  late charge or other assessment  charged or assessed by Ground Lessor
with respect thereto. Horizon shall provide to SBA written notice of such action
at or before the time of making the foregoing payment to the Ground Lessor.  SBA
shall  have a period of ten (10) days from the date of  receipt  of said  notice
from Horizon to cure said default  before Horizon may affect a cure pursuant and
demand an offset  against Rent  pursuant to this  paragraph.  Following any such
payment by Horizon to Ground  Lessor,  Horizon shall be entitled to withhold the
full amount thereof,  plus an additional  administrative  charge of [***] of the
amount paid, from  installments of Rent next owing under any such SLA until such
amount and charge have been fully credited. In connection therewith, the parties
hereby acknowledge that such  administrative  charges are intended to compensate
Horizon for its administrative and additional overhead costs, fees

                                       10
<PAGE>

and expenses  reasonably  anticipated and estimated to be incurred on account of
such action and are not intended to be imposed as a penalty.

          (b) In the case of a  default  under a Ground  Lease the cure of which
cannot be reduced to the payment of a monetary sum  ("Non-Monetary  Ground Lease
Default"), Horizon may, upon written notice to SBA (except in cases of emergency
whereby  Horizon  shall  provide  such notice as promptly as possible  after the
fact),  commence and prosecute  any and all action or actions  necessary to cure
such default as may be available to SBA under the terms and  conditions  of such
Ground Lease.  SBA shall have a period of ten (10) days from the date of receipt
of said notice from  Horizon to cure said  default  before  Horizon may affect a
cure pursuant and demand an offset against Rent pursuant to this  paragraph.  In
the event of any such  curative  action by Horizon  described in this  Paragraph
8(b),  Horizon  shall be entitled  to withhold  the full amount of all costs and
expenses  incurred  by  Horizon in  completing  such  cure,  plus an  additional
administrative  charge of five percent (5%) of such amount, from installments of
Rent next  owing  under this MSA until  such  amount and charge  have been fully
credited.

          (c) In the event that  Horizon  effects a cure of a breach of a Ground
Lease by SBA as provided  herein,  Horizon may, at its election,  require SBA to
assign the Ground  Lease to Horizon  and effect an  Acquisition  pursuant to the
terms of paragraph 9 hereof.

     9. Other Defaults by SBA; Additional Horizon Remedies.

          (a) The following shall constitute  events of default under the MSA by
SBA:

               (i) Breach of any representation,  warranty or covenant set forth
          in this Agreement  including the applicable SLA (with the exception of
          the  interference  provisions  set forth in  Paragraph 6) which is not
          cured within  thirty (30) days of receipt of written  notice,  or such
          shorter time as may be specified by this MSA or the applicable  Ground
          Lease,  except  such  cure  period  will  be  extended  as  reasonably
          necessary to permit SBA to complete the cure so long as SBA  commences
          the cure  within such  thirty  (30) day  period,  or other  applicable
          period,  and  thereafter   continuously  and  diligently  pursues  and
          completes such cure;

               (ii) If any  petition  is  filed by or  against  SBA,  under  any
          paragraph or chapter of the present or any future  federal  Bankruptcy
          Code or under any similar  law or statute of the United  States or any
          state  thereof (and with respect to any  petition  filed  against SBA,
          such  petition  is not  dismissed  within  ninety  (90) days after the
          filing  thereof),  or SBA is adjudged  bankrupt in  proceedings  filed
          under any paragraph or chapter of the present or any future Bankruptcy
          Code or under any similar  law or statute of the United  States or any
          state thereof;

               (iii) If a receiver, custodian or trustee is appointed for SBA or
          for substantially all of the assets of SBA and such appointment is not
          vacated within sixty (60) days of the date of appointment; or

                                       11
<PAGE>

               (iv) If SBA makes a transfer in fraud of creditors.

          (b) Upon the  occurrence  of any  default by SBA under this MSA or any
Ground Lease  Default,  Horizon shall be entitled to exercise any one or more of
the following  rights or remedies in accordance with, and subject to, the terms,
provisions and conditions of this MSA:

               (i) in the case of a default  of this MSA  resulting  from  SBA's
          failure to renew the Ground  Lease as required  under  Paragraph  3(d)
          hereof,  Horizon  shall  have  the  right to take  all  necessary  and
          appropriate steps to effect a renewal thereof;

               (ii) in the event of a breach  or an  alleged  default  under the
          Ground  Lease by SBA which is not cured  within five (5) days prior to
          the date that period to cure  defaults  under the Ground Lease expires
          or if SBA shall fail to properly  effect a renewal of a Ground  Lease,
          then Horizon may upon written  notice to SBA,  acquire from SBA all of
          SBA's rights,  title,  benefits,  interests and obligations  under the
          applicable Ground Lease (hereinafter  referred to as an "Acquisition")
          in accordance  with the provisions of Paragraphs 9(b) and 9(c) hereof,
          whereupon at the completion of the Closing (as hereinafter defined) of
          such Acquisition the applicable SLA shall terminate;

               (iii) upon written notice to SBA, terminate the applicable SLA(s)
          without  exercising its right of Acquisition,  whereupon Horizon shall
          have no further  liability  to SBA  hereunder  with regard to any such
          SLA(s); and

               (iv) with or without  terminating  the applicable SLA, pursue any
          and all other remedies available  hereunder or under applicable law or
          in equity.

          (b) In the event that Horizon elects to exercise its right to cause an
Acquisition, the SBA Improvements, including, without limitation, the Tower, any
concrete foundation,  and any utilities structure or other improvements owned by
SBA on the  Property  shall be  bargained,  sold and  conveyed  to  Horizon at a
purchase  price  equal  to the fair  market  value  of such  improvements  after
disassembly, less any dismantling and moving expenses and less the amount of any
debt or  obligation  encumbering  or secured by such SBA  Improvements.  Nothing
contained  herein  shall be deemed to grant  SBA the right to  encumber  the SBA
Improvements except as otherwise provided in this MSA.

          (c) The closing of the Acquisition  (the "Closing") shall occur within
thirty (30) days after  SBA's  receipt of  Horizon's  notice of exercise of such
right.  During the  aforementioned  period  prior to Closing,  Horizon  shall be
entitled (but shall not be obligated) to take all measures necessary to maintain
each Ground Lease in full force and effect,  including  the exercise of the cure
remedies  described above in Paragraph 8 hereof;  provided,  however,  that such
right shall not relieve SBA of its primary  responsibilities  in respect of each
Ground Lease. SBA agrees to deliver to Horizon  originals or copies of any other
existing leases,  subleases and licenses affecting the Property. At the Closing,
(i) Horizon shall pay to SBA the purchase price for the SBA  Improvements  to be
conveyed to Horizon  under this  Paragraph 9; (ii) SBA shall execute and deliver
to Horizon a bill of sale without recourse to such SBA  Improvements;  (iii) SBA

                                       12
<PAGE>

and Horizon  shall  execute and deliver an  assignment  and  assumption  without
recourse of each Ground  Lease and of existing  leases,  subleases  and licenses
consistent  with the terms and  conditions  hereof and a  termination  agreement
providing  for  the  termination  of the  applicable  SLA as of the  date of the
Closing; and (iv) any and all other deeds, instruments and other writings as may
be reasonably required by Horizon or its title insurer to effect the Acquisition
or procure title insurance to the Property.

          (d) SBA shall indemnify and hold Horizon harmless from and against any
claims,  actions,  injuries,  losses or damages (including reasonable attorneys'
fees and court  costs)  suffered  or  incurred  by  Horizon  on account of SBA's
actions or omissions  under or with respect to the Ground Lease and any assigned
subleases and licenses with any third party prior to the Closing.  Horizon shall
indemnify and hold SBA harmless from and against any claims, actions,  injuries,
losses  or  damages  (including  reasonable  attorneys'  fees and  court  costs)
suffered or incurred by SBA on account of Horizon's  actions or omissions  under
or with respect to the Ground Lease and the assigned subleases and licenses with
any third party after the Closing. The respective obligations of SBA and Horizon
under this Paragraph  9(d) shall survive the Closing and the  termination of the
applicable SLA.

          (e) In no event shall an event of default under one SLA  constitute an
event of default under any other SLA or entitle Horizon to exercise any remedies
in relation to any Site other than the Site which is the subject of the event of
default;  provided,  however,  that  Horizon  shall be entitled to exercise  any
setoff rights it may possess  against SBA,  whether arising under this Agreement
or by operation of law, against any SLA.

     10. Horizon's  Default.  The occurrence of any one or more of the following
events constitutes an "event of default" by Horizon under any SLA.

          (a) If Horizon fails to pay Rent within ten days of Horizon's  receipt
of written request for payment;

          (b) Breach of any  representation,  warranty or covenant  set forth in
this Agreement  including any SLA, with the exception of the  non-payment of any
fee or other sums by  Horizon,  which is not cured  within  thirty  (30) days of
receipt of written  notice or such  shorter time as may be specified by the MSA,
except such thirty (30) day cure period will be extended as reasonably necessary
to permit  Horizon to complete  the cure so long as Horizon  commences  the cure
within such thirty (30) day period and  thereafter  continuously  and diligently
pursues and completes such cure;

          (c)  If any  petition  is  filed  by or  against  Horizon,  under  any
paragraph  or chapter of the present or any future  federal  Bankruptcy  Code or
under any similar law or statute of the United  States or any state thereof (and
with  respect  to any  petition  filed  against  Horizon  such  petition  is not
dismissed  within  ninety  (90) days  after the filing  thereof),  or Horizon is
adjudged  bankrupt in  proceedings  filed under any  paragraph or chapter of the
present or any future Bankruptcy Code or under any similar law or statute of the
United States or any state thereof;

                                       13
<PAGE>

          (d) If a receiver,  custodian or trustee is  appointed  for Horizon or
for any of the assets of Horizon  and such  appointment  is not  vacated  within
sixty (60) days of the date of appointment or

          (e) If Horizon makes a transfer in fraud of creditors.

     11. SBA's Remedies.  If an event of default by Horizon occurs, SBA (without
notice  or  demand  except  as  expressly  required  above)  may  terminate  the
applicable SLA. Horizon will become liable for damages equal to the total of:

          (a) The actual,  reasonable  costs of recovering  the Site which is in
default, including reasonable attorneys' fees);

          (b) The Rents accrued and payable as of the date of termination,  plus
interest thereon from the date due until paid; and

          (c) the Rent  reserved for the remainder of the then existing SLA Term
as such Rents would ordinarily become due and payable.

          (d) If  Horizon  does not cure an actual  default  within  the  period
available to cure a default,  SBA may cure the default and demand  reimbursement
from Horizon of those reasonable  expenditures  made by Horizon to cure any such
default.  Following  any such  payment by SBA,  SBA shall be  entitled to demand
reimbursement  from  Horizon  of the full  amount  thereof,  plus an  additional
administrative  charge of five percent (5%) of the amount  paid.  In  connection
therewith,  the parties hereby acknowledge that such administrative  charges are
intended to compensate SBA for its administrative and additional overhead costs,
fees and expenses reasonably anticipated and estimated to be incurred on account
of such action and are not intended to be imposed as a penalty.

          (e) In no event shall SBA be entitled  to  accelerate  Rents due under
any SLA. In no event shall an event of default under one SLA constitute an event
of default  under any other SLA or  entitle  SBA to  exercise  any  remedies  in
relation  to any Site other  than the Site which is the  subject of the event of
default  provided,  however,  that SBA shall be entitled to exercise  any setoff
rights it may possess against  Horizon,  whether arising under this Agreement or
by operation of law, against any SLA.

     12. Termination Rights of Horizon.  In addition to, and not in lieu of, any
other  rights  of  termination  set  forth  herein,  Horizon  may on one or more
occasions terminate any SLA without any penalty or further liability as follows:

          (a) during any Renewal  Term upon not less than sixty (60) days' prior
written notice to SBA if,  notwithstanding the exercise of Horizon's reasonable,
diligent and good faith efforts, Horizon is unable to obtain or maintain the FCC
license or other governmental approval or permit required to continue to utilize
the Site in the manner then currently utilized;

                                       14
<PAGE>

          (b) upon not less than thirty (30) days' prior  written  notice to SBA
if,  through no fault of  Horizon,  SBA may no longer  lawfully  operate the SBA
Improvements  as a wireless  communications  facility or may no longer  lawfully
maintain the Tower on the Property;

          (c) upon not less than thirty (30) days' prior  written  notice to SBA
if Horizon  determines,  in its reasonable  discretion  exercised in good faith,
that the  Property has  experienced  or suffered,  or hereafter  experiences  or
suffers,  an environmental  contamination or other hazardous  substance  release
through  no  fault  of  Horizon  that  was  not  disclosed  in an  environmental
assessment  provided to Horizon prior to the execution of the SLA and, for those
Sites  conveyed by Horizon to SBA pursuant to the SBA,  that said  contamination
did not exist as of the date Sites were conveyed;

          (d) upon not less than six (6) months' prior written notice to SBA for
no reason or any reason at all after the expiration of the Initial Term.

          In the event that Horizon  terminates the SLA for any Site pursuant to
this Paragraph 11, Horizon shall, upon such termination, effect a timely removal
of its  Equipment  and  transfer  to SBA all of its right  title  and  interest,
without representation or warranty, to any concrete foundations,  tower mounting
platforms, power poles, utility service entrance equipment,  cabling and conduit
remaining at such Site.

     13. Additional Warranties and Covenants.  So long as this MSA is in effect,
SBA hereby further covenants, warrants and agrees as follows:

          (a) SBA shall not exercise any right of  termination  available to SBA
as the tenant  under any Ground Lease except in a Renewal Term and may only then
exercise a right to terminate  the Ground Lease if SBA  exercises  such right to
protect safety or property or SBA reasonably  believes that continued leasing of
the Site will  cause or has  caused SBA to incur  liability  exceeding  the fair
market value of the Site. SBA may not exercise this termination right unless SBA
gives Horizon at least 30 days' notice. This notice shall give Horizon the right
to cause an Acquisition  of the Site as described in Paragraphs  9(b) and (c) of
this MSA.  Horizon  must accept the offer within ten (10) days of receipt of the
notice.  If SBA fails to  receive a  response  within  the ten (10) day  period,
Horizon will be deemed to have  rejected the offer,  and SBA will have the right
to terminate the Ground Lease. If Horizon accepts the offer, an Acquisition will
occur as described in Paragraphs 9(b) and (c) of this MSA.  Without limiting the
generality  of the  foregoing,  in the event of any  bankruptcy  filing or other
insolvency  proceeding  by or against SBA in which the Ground Lease is rejected,
or sought to be rejected,  by SBA or SBA's  trustee or other  representative  of
SBA's  bankruptcy  estate,  SBA shall  invoke any and all rights under 11 U.S.C.
Section 365(h) or any other applicable provision (or any successor provision) to
continue  SBA's  occupancy of the Property so as to permit  Horizon's  continued
occupancy and use of the Site as authorized herein;

          (b) SBA shall duly and punctually perform each and every obligation of
the  "Lessee"  under (and as defined in) the Ground Lease and shall not cause or
permit  the  occurrence  of any  event of  default  on the part of the  "Lessee"
thereunder;

                                       15
<PAGE>

          (c) SBA shall not surrender, or offer to surrender,  any Property to a
Ground Lessor;

          (d) SBA shall not enter  into any  amendment  of a Ground  Lease  that
would  adversely  affect any right or remedy of Horizon  hereunder  or under the
applicable SLA;

          (e) In the event of Ground  Lessor's  failure  to observe or perform a
warranty or covenant of such Ground  Lessor  under the  applicable  Ground Lease
which  has  an  adverse  affect  upon  Horizon's   permitted  use  or  Horizon's
governmental  permits,  SBA shall use diligent and good faith  efforts to compel
Ground Lessor's observance or performance of such warranty or covenant;

          (f) As promptly  as possible  upon SBA's  receipt  thereof,  SBA shall
provide  to  Horizon a copy of any  notice of  default  received  by SBA under a
Ground Lease; any notice of a bankruptcy,  receivership or other insolvency case
or proceeding affecting a Ground Lease or a Property; and any notice,  complaint
order or decree  affecting,  or  seeking  to affect the status of a Tower or the
operation of a Property as a wireless communications facility. In the event that
SBA  provides to a Ground  Lessor any notice of a default by such Ground  Lessor
under the Ground Lease, SBA shall  simultaneously  provide a copy of such notice
to  Horizon.  SBA will not  terminate  a Ground  Lease due to such  default by a
Ground  Lessor except during a Renewal Term and only then if SBA first offers to
assign such Ground Lease to Horizon, in which event Horizon shall have the right
to take an assignment of the Ground Lease and to cause an  Acquisition.  Horizon
shall provide  notice to SBA of the intent of Horizon to accept an assignment of
a Ground Lease  within ten (10) days of the date that Horizon  receives a notice
of such an event from SBA.  The  failure of Horizon to tender said notice to SBA
within ten (10) days of the date that Horizon receives a notice of such an event
from SBA shall constitute a waiver of Horizon's right to accept an assignment of
the Ground Lease;

          (g) SBA shall not  authorize,  permit or allow any third  party to use
any portion of a Property in violation of applicable laws, regulations, codes or
ordinances  (including,  without  limitation,  any legal requirements  governing
radio frequency emissions) or in violation of the applicable Ground Lease; and

          (h) SBA  shall  maintain  at its  expense  the Tower and any other SBA
Improvements  on  the  Property  in  accordance  with  applicable  laws,  codes,
ordinances and regulations, including any applicable lighting, painting or other
marking  requirements.  In the  event  that  a  Tower  is  subject  to  lighting
requirements under any applicable laws,  ordinances,  codes or regulations,  SBA
shall  maintain an alarm system to monitor the operation of such  lighting,  and
Horizon may install at its expense a tie-in  monitor or alarm to inform  Horizon
of the operation of such lighting. SBA shall indemnify and hold Horizon harmless
from and against any actions, claims, proceedings,  damages, liabilities,  fees,
fines,  expenses and other losses  suffered or incurred by Horizon in connection

                                       16
<PAGE>

with the tower lighting system, except such matters as may have been suffered or
incurred  solely as the result of Horizon's  negligence  or willful  misconduct.
Notwithstanding  the foregoing,  the  maintenance  of the tower lighting  system
shall be the  responsibility  of SBA immediately upon the execution of such SLA.
In the event that Horizon  discovers that one or more lighting systems which are
required by any governmental agency are malfunctioning, Horizon shall notify SBA
at the  following  telephone  number,  which number shall be monitored by SBA 24
hours a day, 7 days a week.  1-888-950-7483 (SITE). Horizon shall be entitled to
take any action which it deems reasonably  necessary,  including  repairing such
lighting system and/or notifying the FAA, FCC or any other  governmental  agency
without any liability  whatsoever to SBA for such actions if SBA fails to follow
the applicable government procedures beyond applicable notice and grace periods.
SBA shall maintain each Tower in good condition and repair.

          (i) SBA does hereby agree to indemnify and hold Horizon  harmless from
any and all losses,  damages,  fines,  penalties  or costs of any kind which may
arise from the  improper  design,  maintenance  or operation of a Tower or tower
lighting systems,  or which may be imposed by the FAA, FCC or any other federal,
state or local agency arising from the improper design, maintenance or operation
of a Tower or tower lighting  systems  unless  arising from  Horizon's  actions.
Should Horizon be cited because a Site is not in compliance  through no fault of
Horizon and, should SBA fail to cure the conditions of noncompliance  within the
time to cure  the  noncompliance  as  required  by the  applicable  governmental
agencies, Horizon may either terminate the applicable SEA or, with prior written
notice from Horizon to SBA and allowing  SBA a reasonable  opportunity  to cure,
proceed to cure the conditions of noncompliance at SBA's expense. Amounts of all
reasonable expenses to cure such conditions of noncompliance,  together with any
such fine or citation paid by Horizon, may be deducted by Horizon from the Rent.

          (j)  If  antenna  power  output  ("RF  Emissions")  are  presently  or
hereafter become subject to any restrictions imposed by the FCC for RF Emissions
standards on Maximum Permissible  Exposure ("MPE"), or if the Tower otherwise is
or becomes subject to federal, state or local rules,  regulations,  restrictions
or  ordinances,   Horizon  shall  comply  with  SBA's  reasonable  requests  for
modifications to Horizon's  Equipment which are reasonably  necessary for SBA to
comply. SBA shall take all measures to ensure that all other lessees, sublessees
and licensees  comply,  with such limits,  rules,  regulations,  restrictions or
ordinances.  The RF Emissions  requirements  of Horizon shall be superior to the
requirements of any other occupants of the Property,  provided,  however that in
no event shall Horizon's RF Emissions exceed any limitations  imposed by the FCC
for the  operation of equipment by a single,  PCS or  comparable  tenant.  If an
engineering  evaluation or other power density study be performed to evaluate RF
Emissions  compliance  with MPE limits is required under  applicable law, SBA or
other lessees shall bear all costs of such an evaluation or study. If said study
indicates that RF Emissions at the facility do not comply with  thelimits,  then
SBA and all of SBA's other lessees,  licensees and sublessees shall  immediately
take any steps necessary to ensure that they are individually in compliance with
such limits and shall cease or reduce operations until a maintenance  program or
other  mitigating  measures  can be  implemented  to comply  with MPE.  At SBA's
request,  Horizon  shall  provide to SBA  technical  data  necessary for routine
calculations of MPE compliance, including, but not limited to, TPO gains, losses
and operating frequencies.

          (k) SBA at its sole cost and  expense,  except if such cost or expense
arises  out of a  negligent  or  wrongful  act or  omission  of  Horizon  or its

                                       17
<PAGE>

contractors, shall monitor, maintain and repair each Tower such that Horizon may
utilize  such  Tower  for the  use  permitted  under  Paragraph  5 of this  MSA,
including, without limitation,  lighting systems and markings and the structural
integrity of each Tower  Installation,  maintenance and repair of the Tower must
comply  with all laws  applied in a manner  consistent  with  standard  industry
practices except for minor noncompliance that do not affect Horizon's fights and
privileges under this MSA.

     14. Relocation.

          (a) Following the date of this MSA,  Horizon shall have the right,  at
Horizon's  sole cost and  expense,  to  relocate  the Tower Space at any Site to
another  location on the Tower (the  "Relocated  Tower  Space"),  provided  that
Horizon must first obtain SBA's prior written consent which consent shall not be
unreasonably conditioned, delayed or withheld.

          (b) Following  any such  relocation,  the Relocated  Tower Space shall
thereafter be deemed the "Tower  Space" for all purposes  under this MSA and the
applicable  SLA,  shall be leased to and occupied by Horizon in accordance  with
the terms and  conditions  of this MSA, and this MSA and the SLA shall be deemed
amended accordingly.  Horizon's  obligations to pay any expense or cost incurred
on account of such relocation shall survive any expiration or sooner termination
of this MSA.

     15.  Financing  Matter.  SBA  hereby  represents,  covenants  and agrees as
follows:

          (a) SBA  shall not  grant,  convey  or cause to  attach  any  security
interest  in, to or  against  any of SBA's  interest  or title  under any of the
Ground Lease,  SBA's interest or title under any SLA, this MSA, any of the Tower
or any of the other SBA Improvements  unless, and this MSA and the SLAs shall be
subordinate  to the  Security  Interest  if the  grantee  or holder  thereof  (a
"Secured  Party") and SBA duly execute and deliver to Horizon a  non-disturbance
and  attornment  agreement  ("NDA")  in a form  substantially  the  same as that
attached hereto as Attachment "C".

          (b) Except for the  attachment  of a Security  Interest  as  permitted
under  Paragraph  15 (a) of this MSA,  SBA shall not at any time during the Term
permit or allow  the  filing or other  attachment  of any lien,  charge or other
encumbrance against the Site, the Property, the Tower, or other SBA Improvements
on account of its work with respect  thereto (other than liens that are inchoate
or otherwise  attach by operation of law and  subsequently  accrue or secure the
payment of a subsequently accruing obligation,  but in all events subject to the
requirement  to  discharge  same as provided in the next  sentence  hereof),  or
otherwise  during the SLA Term on account of SBA's acts or omissions or the acts
or omissions of its  lessees,  sublessees  or  licensees.  Without  limiting the
foregoing, SBA shall discharge of record, whether by bond, payment or otherwise,
any such lien,  charge or encumbrance  prohibited under this Paragraph 15 within
thirty  (30) days  after  receipt of actual  notice of the filing or  attachment
thereof.

          (c) Horizon  shall not at any time during the Term permit or allow the
filing or other  attachment  of any  involuntary  lien,  charge  or  encumbrance
against the  Equipment,  Site, the Property,  the Tower,  any SLA or this MSA on
account of its work with respect  thereto (other than liens that are inchoate or

                                       18
<PAGE>

otherwise  attached by  operation of law and  subsequently  accrue or secure the
payment of the subsequently  accruing  obligation,  but in all events subject to
the requirement to discharge same as provided in the next sentence  hereof),  or
otherwise  during the Term on account of Horizon's  acts or  omissions.  Without
limiting the  foregoing,  Horizon  shall  discharge of record,  whether by bond,
payment or otherwise,  any such lien,  charge,  or encumbrance  prohibited under
this  Paragraph 15 within thirty (30) days after receipt of actual notice of the
filing or attachment thereof.

     16. Casualty and  Condemnation.  If the whole or any substantial  part of a
Site shall be taken by any public authority under the power of eminent domain so
as to interfere with Horizon's use and occupancy  thereof,  then the term of the
applicable  SLA shall  cease on the part so taken on the date of  possession  by
such  authority of that part, and any unearned Rent paid in advance of such date
shall be refunded by SBA to Horizon within thirty (30) days of such  possession,
and Horizon  shall have the right to terminate the  applicable  SLA upon written
notice to SBA,  which notice shall be  delivered by Horizon  within  thirty (30)
days  following  the date  notice  is  received  by  Horizon  of such  taking or
possession.  If Horizon  chooses not to terminate the  applicable  SLA, the Rent
shall be reduced or abated in proportion to the actual reduction or abatement of
Horizon's  use of the  Site.  If all or a  portion  of the  Site  is  destroyed,
rendering the Site unusable,  Rent will be suspended until the Site is restored.
SBA shall have a period of one hundred twenty (120) days to restore the Site. If
the  restoration  is not completed  within one hundred  twenty (120) days,  then
Horizon shall have the right to terminate the applicable SLA.

     17. Taxes.

          (a) Horizon shall pay, on or before the due date thereof, all personal
property  taxes levied  against the Equipment  and all taxes levied  against the
Rent  except  for income  taxes  payable by SBA.  If the  assessed  value of the
Property is increased by  inclusion of the  Equipment  and SBA is liable for the
payment of such increase in taxes,  then Horizon shall pay to SBA, within thirty
(30) days after receiving a written request for payment or at least fifteen (15)
days prior to the due date of such taxes (whichever is later),  the part of such
increase in taxes  specifically  attributable to the inclusion of the Equipment.
As a condition of such payment, SBA shall provide to Horizon an original or copy
of the tax assessment or other taxing  authority  documentation  evidencing such
increase on account of the Equipment.

          (b) SBA  shall  pay or  cause to be paid,  on or  before  the due date
thereof,  personal  property taxes levied against the Tower and SBA Improvements
and all real  property  taxes for which SBA is liable  under the Ground Lease or
applicable law.

     18. Insurance and Subrogation.

          (a) SBA and Horizon  shall each provide and  maintain  during the Term
commercial  general  liability  insurance in an aggregate  amount of Two Million
Dollars  ($2,000,000)  per site and name the other party hereto as an additional
insured on such policy or policies.  Each party may satisfy this  requirement by
obtaining  appropriate  endorsements to any master policy of liability insurance

                                       19
<PAGE>

maintained by such party. In no event shall the deductible  under either party's
policy of commercial general liability  insurance exceed Ten Thousand and No/100
Dollars  ($10,000.00).  Without  limiting the  generality  of SBA's  covenant to
comply with the obligations of the Ground Lease, SBA agrees that with respect to
the Conveyed  Sites it shall maintain  during the Term insurance  required to be
maintained by "Horizon"  under the Ground Lease.  The policy amount set forth in
this  Paragraph  18(a) shall be reset on every fifth  anniversary of the Date of
this MSA to increase by a commercially  reasonable amount but not more than 115%
of the policy amount set during the preceding five (5) year period.  The parties
shall also  maintain any other  insurance  required by law,  including  workers'
compensation insurance.

          (b) To the  extent  permitted  under  both of the  parties'  insurance
policies,  neither  party  shall  be  liable  to the  other  (or to the  other's
successors or assigns) for any loss or damage caused by fire or any of the risks
enumerated in a standard "All Risk" insurance policy,  and, in the event of such
insured loss,  neither party's  insurance  company shall have a subrogated claim
against the other. To the extent permitted under both of the parties'  insurance
policies each party hereto shall obtain from its insurers  under all policies of
fire, theft and other casualty insurance maintained by it at any time during the
Term  insuring or covering  the  Property or the Site,  or any portion  thereof,
improvements   thereon  or  operations  therein,  a  waiver  of  all  rights  of
subrogation which the insurer might have against the other party.

          (c)  During  the  Initial  Term and any  Renewal  Term of any SLA on a
particular  Site,  SBA shall  maintain an  all-risks  policy of property  damage
insurance on such Site which contains or provides for replacement  cost coverage
is  sufficient  in  amount  to  rebuild  and  replace  the  Tower  and other SBA
Improvements in the event of any casualty loss.  During the Initial Term and any
Renewal  Term  of any  SLA on a  particular  Site,  Horizon  shall  maintain  an
all-risks  policy of property  damage  insurance on such Site which  contains or
provides for  replacement  cost  coverage is sufficient in amount to rebuild and
replace the Equipment in the event of any casualty loss.

     19. Indemnifications.

          (a) Subject to Paragraph 18(b) above, Horizon shall indemnify,  defend
and hold SBA  harmless  from  and  against  any and all  injury,  loss,  damage,
obligation,  penalty or liability  (or any claims in respect of the  foregoing),
costs or expenses (including reasonable attorneys' fees and court costs) imposed
upon,  incurred by or asserted against SBA and arising from or on account of any
occurrence,  injury to or death of  persons  (including  workmen)  or loss of or
damage to property caused by the negligence or willful  misconduct of Horizon or
its agents, employees or contractors,  licensees, guests or invitees in the use,
operation, maintenance or repair of or on the Property, excepting matters caused
by the  negligence or willful  misconduct  of SBA and SBA's  agents,  employees,
representatives   and  contractors  (and  Horizon  shall  not  be  deemed  SBA's
contractor  for  purposes  hereof) or (ii) any  failure by Horizon to perform or
comply with any of the applicable  terms,  covenants or conditions of the MSA or
any applicable SLA.

                                       20
<PAGE>

          (b) Subject to Paragraph 18(b) above, SBA shall indemnify,  defend and
hold  Horizon  harmless  from and  against  any and all  injury,  loss,  damage,
obligation,  penalty or liability  (or any claims in respect of the  foregoing),
costs or expenses (including reasonable attorneys' fees and court costs) imposed
upon, incurred by or asserted against Horizon and arising from or on account of:
(i) any occurrence, injury to or death of persons (including workmen) or loss of
or damage to property  caused by the negligence or willful  misconduct of SBA or
SBA's agents, employees, contractors, licensees, subtenants, guests, invitees or
other persons on or about the Property other than Horizon and Horizon's  agents,
employees,  representatives  and  contractors  (and  SBA  shall  not  be  deemed
Horizon's  contractor for purposes hereof) or (ii) any failure by SBA to perform
or comply with any of the terms,  covenants or  conditions  of the Ground Lease,
this MSA or any applicable SLA.

          (c) SBA shall have no obligation to indemnify  Horizon from or against
nor shall Horizon be entitled to assert a claim against SBA for  incidental  and
consequential  damages  arising  from the  negligence  of SBA,  but SBA shall be
responsible   for  incidental  and   consequential   damages  arising  from  the
intentional  torts and  willful  misconduct  of SBA or SBA's  officers,  agents,
employees,  representatives,  invitees and contractors.  Likewise, Horizon shall
have no obligation to indemnify SBA from or against nor shall SBA be entitled to
assert a claim against Horizon for incidental and consequential  damages arising
from the negligence of Horizon,  but Horizon shall be responsible for incidental
and  consequential  damages  arising  from  the  intentional  acts  and  willful
misconduct of Horizon or Horizon's officers, agents, employees, representatives,
invitees or contractors.  The foregoing  waivers of incidental and consequential
damages  shall not apply to damages  attributable  to claims of third parties to
this Agreement.

     20. Cell Site on Wheels. Should Horizon experience a loss in communications
service  to its  customers  for any  reason,  Horizon  shall be,  and hereby is,
authorized,  to the fullest  extent  permissible by applicable law and ordinance
and  the  Ground   Lease,   to  bring  onto  the  Property  a  mobile   wireless
communications  facility  or COW  during  such  period of loss of service to the
extent space is available and further provided that the presence of the COW does
not materially interfere with the maintenance, repair and restoration efforts of
SBA or the other  tenants.  In the event that  Horizon  takes such action as the
result  of a breach or other  negligent  or  wrongful  act or  omission  of SBA,
Horizon shall be entitled to recover  against SBA (or, at Horizon's  option,  to
set off against  Rent  payable  hereunder)  the  reasonable  costs and  expenses
incurred by Horizon in implementing  and  maintaining  such facility during such
period and of removing the same upon the re-establishment of regular service.

     21.  Notices.  All  notices,  requests,  demands  and other  communications
hereunder shall be in writing and personally delivered against receipt,  sent by
overnight  delivery  by a  nationally  recognized  overnight  carrier or mailed,
certified mail, return receipt requested, addressed as follows:

                                       21
<PAGE>

                    If to Horizon, to:
                    ------------------
                    Horizon Personal Communications, Inc.
                    68 East Main Street
                    P.O. Box 480
                    Chillicothe, Ohio 45601-0480
                    Attn: Vice President, Technology

                    With a copy to:
                    ---------------
                    Lewellen & Frazier PLC
                    415 North McKinley, Suite 1240
                    Little Rock, AR 72205
                    Attention: Todd A. Lewellen

                    If to SBA, to:
                    --------------
                    SBA Towers, Inc.
                    Onetown Center Road, 3rd Floor
                    Boca Raton, Florida 33486
                    Attention: Site Administration

     All notices,  demands and requests shall be effective upon actual delivery,
if personally  delivered against receipt or delivered by overnight carrier,  or,
if mailed, on the date of the United States Postal Service  postmark;  provided,
however,  that the time  period in which a response  or action,  if any,  to any
notice,  demand or request must be given or completed shall commence to run from
the date of receipt of the notice,  demand or request by the addressee  thereof.
Rejection or failure to claim delivery of any such properly given notice, demand
or request, or any refusal to accept any such notice,  demand or request, or the
inability  to deliver  because of changed  address of which no notice was given,
shall be deemed to be receipt of the  notice,  demand or request  sent as of the
date of the United  States  Postal  Service  postmark  or the date of  attempted
personal  delivery  or  overnight  carrier  delivery,  as the  case  may be.  By
providing at least five (5) days' written notice thereof in accordance with this
Paragraph  21,  either  party  shall have the right from time to time and at any
time during the term of this MSA to change its address and to specify as its new
address any address within the continental United States of America.

     22. Quiet Enjoyment,  Title and Authority. SBA covenants and warrants that:
(i) SBA has full right, power and authority to execute this MSA and the power to
grant all rights and interests  hereunder;  (ii) SBA's execution and performance
of this MSA will not violate any laws, ordinances,  covenants, or the provisions
of any mortgage,  lease or other agreement  binding on SBA, and (iii) subject to
matters of record as of an SLA Commencement  Date and condemnation  proceedings,
Horizon  shall have the quiet  enjoyment  of each Site under this MSA during the
SLA Term. SBA shall indemnify  Horizon from and against any loss, cost,  expense
or damage  including  attorneys'  fees associated with a breach of the foregoing
covenant of quiet enjoyment Subject to Paragraph 22 (iii),  Horizon shall not be
disturbed in its use and occupancy of such Site or in the exercise of its rights
under  this  MSA or the  applicable  SLA as long as  Horizon  is not in  default
hereunder  beyond any  applicable  grace or cure period.  Horizon  covenants and

                                       22
<PAGE>

warrants  that:  (i) Horizon has the full right,  power and authority to execute
this MSA and perform its obligations hereunder, and (ii) Horizon's execution and
performance of this MSA will not violate any laws, ordinances, covenants, or the
provisions of any mortgage, lease or other agreement binding on Horizon.

     23. Environmental Laws.

          (a)  Horizon,  its heirs,  grantees,  successors,  and  assigns  shall
indemnify,  defend, reimburse and hold harmless SBA from and against any and all
damages,  caused by  activities  conducted on a Site by Horizon,  and either (i)
arising  from the presence of any  substance,  chemical or waste  identified  as
hazardous,  toxic or dangerous in any applicable federal,  state or local law or
regulation  including  petroleum  or  hydrocarbon  based  fuels  such as diesel,
propane or natural  gas  (collectively,  "Hazardous  Materials")  introduced  by
Horizon  upon,  about or beneath a Site or  migrating  from such  Site,  or (ii)
arising  out of the  violation  by  Horizon  of any  environmental  requirements
applicable to a Site or  applicable  to the  activities of Horizon on such Site.
Horizon  covenants  that it shall not nor  shall  Horizon  allow its  employees,
agents or independent  contractors  to treat,  store or dispose of any Hazardous
Materials on the Property except in accordance with applicable laws.

          (b) Except as set forth above, SBA, its heirs,  grantees,  successors,
and assigns shall  indemnify,  defend,  reimburse and hold harmless Horizon from
and against  any and all  damages  arising  from (i) the  presence of  Hazardous
Materials  upon,  about or beneath  any  Property  or  migrating  to or from the
Property  introduced  by SBA or its other  tenants,  or (ii)  arising out of the
violation  by  SBA or  its  other  tenants  of  any  environmental  requirements
pertaining to the Property and any activities thereon.

     24. Assignment and Subleasing.  Either party may assign all or a portion of
its rights,  title or interests  hereunder or under a particular SLA;  provided,
however,  that the proposed  assignee  shall agree in writing to be bound by the
terms and conditions of this MSA and each  applicable SLA. In the event that the
proposed  assignee  provides  audited (i) balance sheets and (ii)  statements of
operations prepared in accordance with GAAP which indicate that the assignee has
a financial  position,  as measured by reference to such  assignee's  net worth,
operating  results,  and working  capital,  which is  comparable  to that of the
assigning  party as of the date hereof,  the  assigning  party shall be released
from any and all obligations under the assigned instruments and for the assigned
Sites.  No  such  assignment  by  either  party  shall  affect  the  rights  and
obligations  of the other party  under this MSA. In the event that the  proposed
assignee  does  not  have a  financial  position  (as  defined  above)  which is
comparable to that of the assigning  party as of the date hereof,  the assigning
party shall remain liable for all obligations under the assigned instruments and
for the assigned Sites.  Notwithstanding  the foregoing,  Horizon shall have the
right without  having the  obligation to obtain the consent of SBA to assign any
SLA to West Virginia Alliance, LLC d/b/a Intellos. Horizon shall not be entitled
to assign its interest  under this MSA or an SLA to an entity  which  utilizes a
spectrum  different  than that of Horizon  unless it first  obtains  SBA's prior
written consent which consent shall not be conditioned or unreasonably  withheld
or delayed by SBA. SBA acknowledges that its consent to a proposed assignment by

                                       23
<PAGE>

Horizon to an entity which operates at a spectrum  different from Horizon's will
be  unreasonably  withheld  if the  operation  at said  spectrum  will not cause
interference  with the operation of other equipment at each applicable  Property
affected by the SLA  proposed to be assigned by Horizon.  Horizon  shall have no
right to sublease or  partially  assign its rights under any SLA unless it first
obtains SBA's prior written consent; however, SBA shall be entitled,  subject to
the other provisions hereof, to sublease or partially assign its rights under an
SLA without obtaining Horizon's prior consent.

     25. Notice of Proposed Third Party Use; Right of First Refusal.

          (a) In the event  that (i) SBA  makes or  receives  a bona fide  offer
pursuant to which a third party would enter into a lease,  sublease,  license or
other occupancy  agreement with respect to any portion of a Property (the "Right
of First  Refusal  Space")  during the term of this MSA and (ii) SBA  intends to
accept such offer,  then SBA shall  promptly send written  notice (the "Right of
First  Refusal  Notice") to Horizon  offering to lease or sublease  the Right of
First  Refusal  Space to Horizon  for the same rent and under the same terms and
conditions as the aforementioned bona fide offer (the "Right of First Refusal").
The Right of First Refusal Notice shall contain the following information:

                    (i) the price,  terms,  and  conditions for the occupancy of
          the Right of First  Refusal  Space,  the name of the  person or entity
          making  the offer  and a  description  of the  Right of First  Refusal
          Space;

                    (ii)  evidence  of the bona  fide  offer  such as a  written
          proposal,  term sheet or  proposed  contract  or a summary of a verbal
          offer; and

                    (iii)  provided  that  such  third  party is a  provider  or
          carrier  of  wireless   communications   services,  the  frequency  or
          frequencies,  proposed antenna  radiation center location and radiated
          power level and type of technology  (whether CDMA,  TDMA,  etc.) to be
          utilized by such third party on the Property.

          (b) Horizon shall have three (3) days after  Horizon's  receipt of the
Right of First  Refusal  Notice  in  accordance  with the  notice  provision  in
Paragraph  21 hereof  (which  three (3) day period is  referred to herein as the
"Acceptance Period") to elect to exercise the Right of First Refusal. If Horizon
elects to  exercise  the Right of First  Refusal,  Horizon  shall  notify SBA in
writing within the Acceptance  Period of Horizon's intent to exercise such right
whereupon  the Right of First  Refusal  shall become a binding  contract for the
lease or sublease of the Right of First Refusal Space and Horizon shall lease or
sublease the Right of First Refusal Space in  accordance  with such rent,  terms
and conditions.  If Horizon does not notify SBA in writing within the Acceptance
Period of  Horizon's  election  to exercise  its Right of First  Refusal on such
terms and conditions,  Horizon's right to exercise its Right of First Refusal on
such terms and conditions  shall  terminate.  This Paragraph 25 (b) shall not be
deemed to limit or alter Horizon's  relocation  rights set forth in Paragraph 14
of this MSA or to relieve Horizon of its obligations  under the SLA prior to the
exercise of the Right of First Refusal by Horizon.

                                       24
<PAGE>

     26. Right of First Refusal to Purchase.

          (a)  Except  in the  instance  of a sale of  substantially  all of the
assets of SBA or in the event of a merger or  reorganization  by SBA, if, at any
time  during the Term,  SBA  receives  a bona fide  offer from a third  party to
purchase any Property (the "Offer"),  which Offer SBA is prepared to accept, SBA
shall  promptly  transmit  to Horizon  its  written  offer (the  "First  Refusal
Notice")  to sell the  Property  to  Horizon  on the same  terms and  conditions
specified in the Offer.  Horizon  shall have ten (10) business days within which
to accept such offer.  If Horizon shall accept such offer by written notice (the
"Acceptance  Notice")  to SBA within said ten (10) day period  (such  Acceptance
Notice  shall  specify a closing  date which is the  earlier of thirty (30) days
from the date  thereof or the closing date  specified in the Offer),  such offer
and acceptance  shall constitute a contract between them for the sale by SBA and
the  purchase  by  Horizon  of the Site and shall not  thereafter  be subject to
rejection by either party.

          (b) If the  Offer  is not so  accepted  by  Horizon,  SBA may sell the
Property to such bona fide third party  purchaser on the terms  contained in the
Offer. Any such sale and transfer must be consummated  within 180 days following
the expiration of the time herein above provided for the acceptance of the Offer
by  Horizon.  If the  Property  is sold to such third  party,  the sale shall be
subject to this MSA and the  applicable  SLA and all of the  provisions  hereof,
including the right of first refusal provided in this Paragraph 26.

     27. Waiver of SBA's Lien.  SBA hereby waives any and all lien rights it may
have,  statutory  or  otherwise,  with  respect to the  Equipment or any portion
thereof.  The Equipment shall be deemed  personal  property for purposes of this
MSA and any SLA,  regardless  of whether any  portion  thereof is deemed real or
personal property under applicable law.

     28.  Conditions  Precedent.  SBA  shall  have the right to  terminate  this
Agreement  if the  following  conditions  have not been  satisfied  prior to the
Closing  (as that  term is  defined  in the  APA):  1) a BTS  Agreement  in form
substantially  similar to this  Agreement  has been entered into between  Bright
PCS,  LLC and SBA;  and 2) this  Agreement  has been  approved  by the  Board of
Directors  of SBA.  In the  event  that SBA  fails to  obtain  approval  of this
Agreement  by its Board of Directors  on or before  September 1, 1999,  this MSA
shall  terminate  and SBA shall pay to  Horizon  the sum of Fifty  Thousand  and
No/100 Dollars ($50,000.00).

     29. Confidential Information.

          (a) Use of Confidential Information. In order to permit the parties to
perform their respective obligations under this Agreement,  each party may, from
time to time,  disclose to the other  confidential  or proprietary  information.
Such  confidential  or proprietary  information  and the terms of this Agreement
shall  constitute   "Confidential   Information".   Each  party  shall  use  all
Confidential  Information  solely for the purpose of performing its  obligations
under this  Agreement.  Neither party shall disclose to any other person,  other
than employees or agents of the party who agree,  in writing,  to be bound by an
equivalent undertaking, any Confidential Information. SBA agrees not to disclose
any of Horizon's  Confidential  Information to a competitor of Horizon.  Horizon
agrees not to disclose any of SBA's Confidential  Information to a competitor of
SBA.

                                       25
<PAGE>

          (b) Exceptions.  The  aforementioned  restrictions  shall apply to all
Confidential Information with the exception of the following:

                    (i) Confidential  Information which is made public by either
          party while  performing  under this Agreement or which otherwise is or
          hereafter  becomes part of the public domain  through no wrongful act,
          fault, or negligence on the part of the other party;

                    (ii)  Confidential  Information which a party can reasonably
          demonstrate  is already in such party's  possession and not subject to
          an existing agreement of confidentiality;

                    (iii)  Confidential  Information  which is  received  from a
          third party  without  restriction  and without  breach of an agreement
          with Horizon or SBA;

                    (iv)   Confidential   Information   which  is  independently
          developed by a party as evidenced by its records; or

                    (v) Confidential  Information which either party is required
          to disclose pursuant to a valid order of a court or other governmental
          body or any  political  subdivision  thereof;  provided  that,  to the
          extent that it may lawfully do so, the disclosing  party shall provide
          the affected party with immediate  written notice of the nature of the
          required  disclosure and shall, where appropriate,  provide that party
          with the  opportunity to interpose an objection or obtain a protective
          order   restricting  the  use  and  disclosure  of  the   Confidential
          Information; or

                    (vi) in defense of a legal action or otherwise required by a
          governmental agency or applicable law.

     30. Miscellaneous.

          (a) Each  party  agrees  to  furnish  to the  other and to a person or
entity designated by the requesting party, within twenty (20) days after receipt
of written  request  such  truthful  estoppel  information  as either  party may
reasonably request.

          (b) Each party agrees to execute any documents (including a short form
or memorandum of lease, easement agreement or both) requested by the other party
to confirm of record its  rights  under this MSA or any SLA (but  excluding  the
economic  terms  hereof).  Unless the laws of the state in which the Property is
located prohibit the recordation of a short form or memorandum of lease, neither
party shall record this MSA, but may record, in lieu thereof, the aforementioned
short  form or  memorandum  of lease or the SLA.  In the event of a  recordation
prohibition  described above,  either party may record any SLA. Either party may
record any easement agreement.

                                       26
<PAGE>

          (c)  This  MSA,  the BTS  Agreement  and the  Antenna  Site  Agreement
including  all  SLAs,  exhibits  attached  hereto  and  incorporated  herein  by
reference,  constitutes the sole and entire agreement between the parties hereto
with respect to the subject  matter hereof and  supersedes  all  understandings,
contracts,  promises,  covenants,  representations,  statements,  agreements and
undertakings  (whether written or oral), with respect thereto made prior to, the
execution  and delivery of this MSA with the exception of the Agreement for Use,
Non-Disclosure  of  Proprietary  Information.  This  MSA or any  SLA  may not be
modified  or  amended,  except by a written  instrument  signed by both  parties
hereto. This MSA, SBA's rights and Horizon's rights hereunder shall be deemed to
be and hereby are  incorporated  by reference  into each SLA for a Site and this
MSA and each SLA shall run with and burden title to each Site and Property  and,
except as otherwise  provided  herein,  the  provisions of this MSA and each SLA
shall be binding  upon and shall inure to the benefit of the parties  hereto and
their  respective  heirs,  administrators,   executors,  legal  representatives,
successors and permitted  assigns.  The paragraph  captions and headings used in
this  MSA are for  convenience  of  reference  only and  shall  not  affect  the
construction  to be given any of the  provisions  hereof.  If the time period or
date by which or on which any right,  option or election provided under this MSA
must be exercised,  or by which or on which any act required  hereunder  must be
performed, or by which or on which any notice must be given or received, expires
or occurs on a  Saturday,  Sunday or a holiday  observed by state  chartered  or
national banks in the state or commonwealth in which the Site are located,  then
such time period or date shall be automatically  extended through the end of the
next  day  which is not a  Saturday,  Sunday  or such a  holiday.  All  exhibits
attached to this MSA and referred to herein are deemed  incorporated in this MSA
by reference.

          (d) Whenever possible, each provision of this MSA shall be interpreted
in such manner as to be  effective  and valid under  applicable  law, but if any
provision of this MSA shall be prohibited by or invalid  under  applicable  law,
such provision  shall be ineffective  only to the extent of such  prohibition or
invalidity,  without  invalidating  the  remainder  of  such  provision  or  the
remaining provisions of this MSA.

          (e) This  MSA does  not,  and  shall  not be  construed  to,  create a
partnership or joint venture or any other  relationship  between SBA and Horizon
other than the  relationship of lessor and lessee under the laws of the state or
commonwealth in which each Property is located.

          (f) This MSA shall be governed by, and construed in  accordance  with,
the laws of the state where the applicable Site is situated.

          (g) This MSA may be executed in two or more counterparts, all of which
shall be considered one and the same  agreement and shall become  effective when
one or more counterparts  have been signed by the each of the parties,  it being
understood that all parties need not sign the same counterpart.

          (h) Horizon  shall be entitled to pursue NDAs with the Ground  Lessors
for each Site;  provided,  however,  that SBA shall have the right to review and
approve,  which  approval  shall not be  unreasonably  conditioned,  delayed  or
withheld, all correspondence which is sent to the Ground Lessors.  Horizon shall
provide SBA with copies of all such correspondence for SBA's files.

                                       27
<PAGE>

          (i) No Brokers;  Indemnification  from Broker's Fees.  Horizon and SBA
hereby  represent,  agree and  acknowledge  that no  broker  or other  person is
entitled to claim or to be paid a commission  as a result of the  execution  and
delivery of this MSA. Each of the parties shall  indemnify,  defend and hold the
other  party  harmless  for  all  claims,  damages,   liabilities  and  expenses
(including  attorney's fees) arising from a  misrepresentation  arising from the
first sentence of this paragraph.

     IN WITNESS  WHEREOF,  SBA and Horizon have duly executed and delivered this
MSA. The party last  executing  this MSA shall insert the date of such execution
on the first page hereof, which date shall be the Date of this MSA.

                                     PURCHASER:
                                     SBA TOWERS, INC.

                                     By:______________________________

                                     Title:___________________________

                                     Attest: _________________________

                                     Title:___________________________

                                             [CORPORATE SEAL]

                                     HORIZON PERSONAL
                                     COMMUNICATIONS, INC.:

                                     By:______________________________

                                     Title:___________________________

                                       28
<PAGE>

                                 ATTACHMENT "A"
                                       SLA

                            SITE LEASE ACKNOWLEDGMENT

     This Site Lease Acknowledgment  ("SLA") is made and entered into as of this
________ day of ______________,  1999, by and between  ______________________  ,
hereinafter designated as "Horizon" and  __________________________  hereinafter
designated as "SBA",  pursuant and subject to that certain Master Site Agreement
("MSA") by and between the Parties hereto, dated as of March ________, 1999. All
capitalized terms have the meanings ascribed to them in the MSA.

     1. The Site  leased by SBA to  Horizon  shall  consist  of the Cable  Path,
Easements, Tower Space, and Ground Space, as those terms are defined in the MSA.
The Site is a portion of that certain portion of that real property,  located in
the  City of  ____________,  the  County  of  _____________,  and the  State  of
____________,  more  particularly  described in the Memorandum of Lease which is
recorded in Book ___, Page ___ [or as Instrument  Number  _____________]  in the
office of the  ___________________ of ______________  County,  ____________ (the
Property").  The Property is described in Exhibit "1" attached hereto and made a
part hereof.

     2. Horizon has installed at the Site the Grandfathered  Equipment set forth
in Exhibit "2" which shall be completed, attached and incorporated herein within
180 days of the SLA  Commencement  Date in accordance with paragraph 2(c) of the
Agreement  This  paragraph  shall only apply to  Conveyed  Sites as that term is
defined in the MSA.

     3.  The  commencement  date  of  the  SLA  ("SLA  Commencement   Date")  is
_____________,  1999.  The first (1st) monthly rental payment is due and payable
by Horizon to SBA on the SLA Commencement Date in accordance with Paragraph 4 of
the  Agreement.  Any future rent  adjustments  shall be calculated in accordance
with Paragraph 4 of the Agreement.

     4. The term of this SLA is ten (10) years beginning on the SLA Commencement
Date.  The term of the SLA will  automatically  renew for three (3)  additional,
consecutive  five (5) year  terms  unless  Horizon  notifies  SBA in  writing of
Horizon's intention not to renew as provided in Paragraph 3(c) of the MSA.

     5. Horizon has been granted certain preferential rights pursuant to the MSA
which may  affect  subsequent  tenants  or  purchasers  of the  Property.  These
preferential  rights  include a right of first refusal to purchase the Property,
the right of first refusal to lease  additional space on the tower, the right to
relocate its equipment to a different  height on the tower, the right to install
additional  equipment on the Property  (subject to such  limitations to install,
modify or replace the  equipment  as may be  provided in the MSA),  the right to
place a mobile  telecommunications  facility  on the  property  in the event the
existing  tower  facilities  are damaged or destroyed,  and the right to be free
from interference from subsequent tenants.

                                       29
<PAGE>

     IN WITNESS  WHEREOF,  the  parties  hereto have set their hands and affixed
their respective seals the day and year first above written.

ATTEST:                           _____________________________________
                                  d/b/a  HORIZON

____________________              By:__________________________________

                                  Title:_______________________________

ATTEST:                           _____________________________________
                                  d/b/a SBA COMMUNICATIONS

____________________              By:_________________________________

                                  Title:______________________________

                               [ACKNOWLEDGEMENTS]

                                       30
<PAGE>

                             Exhibit "1" TO THE SLA
                             ----------------------

                        LEGAL DESCRIPTION OF THE PROPERTY

[FOR  CONVEYED  SITES,  THIS  DESCRIPTION  SHOULD BE TAKEN FROM THE MOL FILED BY
HORIZON AND SHOULD INCLUDE ALL INGRESS/EGRESS AND UTILITY EASEMENTS]

                                       31
<PAGE>

                             Exhibit "2" to the SLA
                             ----------------------

                             GRANDFATHERED EQUIPMENT

For Conveyed Sites,  this Exhibit shall be completed,  attached and incorporated
herein within 180 days of SLA  Commencement  Date in accordance  with  paragraph
2(c) of the Agreement

Antenna manufacturer and type-number:                   ------------------

Number of antennas:                                     ------------------

Weight and dimension of antenna(s) (LxWxD):             ------------------

Transmission line mfr. & type no.:                      ------------------

Diameter & length of transmission line:                 ------------------

Location of antennas for Grandfathered Equipment
(as described in Exhibit 3" attached hereto and
made a part hereof):                                    ------------------

Height of antenna(s) on structure:                      ------------------

Direction of radiation:                                 ------------------

Ground Space for Grandfathered Equipment
(equipment building/floor space dimensions
as described in Exhibit "4" attached hereto
and made a part hereof):                                ------------------

Frequencies/Max Power Output:                           ------------------

Grounding specifications for Grandfathered
Equipment (as described in Exhibit "5"
attached hereto and made a part hereof):                ------------------

Generator services, if any:                             ------------------

                                       32
<PAGE>

                             Exhibit "3" to the SLA
                             ----------------------

                              LOCATION OF ANTENNAS

[FOR CONVEYED  SITES,  THIS EXHIBIT SHALL BE COMPLETED BY SBA WITHIN 180 DAYS OF
THE SLA COMMENCEMENT DATE AND SHALL BE SUBJECT TO HORIZON'S WRITTEN APPROVAL]

                                       33
<PAGE>

                             Exhibit "4" to the SLA
                             ----------------------

                  DESCRIPTION OF EQUIPMENT BUILDING/FLOOR SPACE

[FOR CONVEYED  SITES,  THIS EXHIBIT SHALL BE COMPLETED BY SBA WITHIN 180 DAYS OF
THE SLA COMMENCEMENT DATE AND SHALL BE SUBJECT TO HORIZON'S WRITTEN APPROVAL.]

                                       34
<PAGE>

                             Exhibit "5" to the SLA
                             ----------------------

                            GROUNDING SPECIFICATIONS

[FOR CONVEYED  SITES,  THIS EXHIBIT SHALL BE COMPLETED BY SBA WITHIN 180 DAYS OF
THE SLA COMMENCEMENT DATE AND SHALL BE SUBJECT TO HORIZON'S WRITTEN APPROVAL.]

                                       35
<PAGE>

                                 ATTACHMENT "B"
                                 --------------

                          ANTENNA SITE LEASE AGREEMENT

                        CONFIDENTIAL TREATMENT REQUESTED

     Confidential Portions of this Agreement Which Have Been Redacted Are Marked
With  ("[***]").  The  Omitted  Material  Has  Been  Filed  Separately  With The
Securities and Exchange Commission.

                      ATTACHMENT B TO MASTER SITE AGREEMENT

                             ANTENNA SITE AGREEMENT

1.   PREMISES AND USE. SBA Towers, Inc., a Florida corporation "Owner" leases to
     _______________,  a  Delaware  Corporation,  "Tenant,"  the site  described
     below:

     Check appropriate box(es)

     Tower antenna space;

     Pad or Shelter space for placement of base station equipment  consisting of
     approximately _________ square feet; of space; or

     Space required for cable runs to connect  telecommunications  equipment and
     antennas,   in  the  location(s)  shown  on  Exhibit  A,  together  with  a
     non-exclusive   easement  for   reasonable   access   thereto  and  to  the
     appropriate,  in the discretion of Tenant, source of electric and telephone
     facilities,  collectively,  the "Site." The Site will be used by Tenant for
     the purpose of installing,  removing, replacing, modifying, maintaining and
     operating,  at its expense,  a  telecommunications  service system facility
     consisting of the antenna(s)  and related  equipment set forth on Exhibit B
     the  "Equipment."  If Tenant  desires to place  equipment on the Site other
     than  that  listed on  Exhibit  B,  Owner and  Tenant  will  negotiate  the
     placement of the additional  equipment and the associated  increased  rent.
     Any personal property owned by Tenant whether fixed or attached to the Site
     or the Tower shall remain the exclusive  property of Tenant  without regard
     to whether the personal property is described on Exhibit B. Tenant will use
     the Site in a manner which will not  unreasonably  disturb the occupancy of
     Owner's other tenants.

2.   CONDITIONS  PRECEDENT.  Tenant's obligation to perform under this Agreement
     shall be subject to and conditioned upon:

     (a)  Tenant securing  appropriate  approvals after making diligent  efforts
          for Tenant's intended use of the Site from the Federal  Communications
          Commission, the Federal Aviation Administration and any other federal,
          state or local regulatory  authority having jurisdiction over Tenant's
          proposed use of the Site;

     (b)  Tenant shall have the right to obtain a title report or commitment for
          a title policy from a title  insurance  company of its choice.  If, in
          the  opinion of the  Tenant,  such title  report  shows any defects of
          title or liens or encumbrances  which adversely affect Tenant's use of
          the Site or Tenant's ability to obtain financing, Tenant shall have no
          obligation to perform under this Agreement;

                                       1
<PAGE>

     (c)  Tenant  shall  have the  right to have the Site  surveyed  and to have
          structural  tower  studies,  radio  frequency  engineering  and  other
          engineering  analyses  performed.  In the event that any  defects  are
          shown by the survey or the engineering analyses,  which in the opinion
          of Tenant, may adversely affect Tenant's use of the Site. Tenant shall
          have the right to  cancel  this  Agreement  immediately  upon  written
          notice to Owner; and

     (d)  Tenant shall have the right to have an environmental audit of the Site
          performed by an  environmental  consulting  firm of Tenant's choice at
          Tenant's  cost.  If the  environmental  audit reveals that the Site is
          contaminated  with  Hazardous  Materials,  as that term is hereinafter
          defined,  Tenant  shall  have no  obligation  to  perform  under  this
          Agreement; and

     (e)  Tenant may conduct radio frequency  propagation studies ("RF Studies")
          on the Site. If the RF Studies do not provide  results which meet with
          the personal  satisfaction of Tenant,  Tenant shall have no obligation
          to perform  under this  Agreement.  Tenant shall have 60 days from the
          Possession  Date ("Review  Period") to perform the  conditions in this
          section.  Tenant's inability to successfully  satisfy these conditions
          or the  occurrence  of any other  event  which  effectively  prohibits
          Tenant's  intended  use of the  Site  shall  relieve  Tenant  from any
          obligation to perform under this Agreement and shall entitle Tenant to
          restitution  of any unearned  rental  payments which have been paid to
          Owner during the Review  Period.

          Owner's obligation to perform under this Agreement shall be subject to
          and  conditioned  upon Tenant  providing  Owner with a copy of the FAA
          Determination   of  No  Hazard  which  grants   approval  to  Tenant's
          frequencies and power (ERP) to be used at the Site.  Tenant shall make
          diligent efforts to obtain such  Determination  and shall have 60 days
          from the Possession Date to perform this condition. Tenant's inability
          to  successfully  satisfy this condition  shall relieve Owner from any
          obligation to perform under this Agreement at Owner's option.

                                       2
<PAGE>
                                        [***] - CONFIDENTIAL TREATMENT REQUESTED

3.   TERM. The term "Initial  Term" of the Agreement is five years  beginning on
     the  earlier of (i)  fifteen  (15) days from the date that  Owner  provides
     notice  to  Tenant  that the Site is ready  for  Tenant's  installation  of
     Equipment,  or (ii) the date on which Tenant commences  installation of any
     of its  Equipment  at  the  Possession  Site  ("Possession  Date").  If the
     Possession Date is the first day of a calendar  month,  the Possession Date
     shall  also  be  the  Commencement  Date  ("Commencement   Date").  If  the
     Possession  Date  falls on a day other  than the  first  day of a  calendar
     month,  the first day of the calendar month  following the Possession  Date
     shall   constitute   the   Commencement   Date.   This  Agreement  will  be
     automatically  renewed  for three (3)  additional  terms  (each a  "Renewal
     Term") of five years each, unless Tenant provides Owner notice of intention
     not to renew not less than  one-hundred  and twenty (120) days prior to the
     expiration of the Initial Term or any Renewal  Term.

4.   RENT.  Beginning on the first  anniversary of the  Commencement  Date, Rent
     will be paid in advance in equal  monthly  payments  of [***] for the first
     twelve months following the first  anniversary of the Commencement Date and
     will be increased  annually on the anniversary of the Commencement  Date by
     [***] of the  yearly  rate in effect  for the  prior  year.  Rent  shall be
     apportioned  for any  fractional  year in  which  the  Initial  Term or the
     Renewal Term begins or ends.  Payments ONLY shall be sent to Dept. #215595,
     Miami, Florida 33121-5595.

5.   TITLE AND QUIET  POSSESSION.  Owner  represents  and  agrees (a) that is in
     possession  of the Site as ? fee  owner or ? lessee  under a ground  lease,
     ("Ground  Lease;") (b) that it has the right to enter into this  Agreement;
     (c) that the person  signing this  Agreement has the authority to sign; and
     (d) that Tenant is entitled to the quiet  possession of the Site subject to
     zoning and other  requirements  imposed by  governmental  authorities,  any
     easements,  restrictions,  or encumbrances of record throughout the Initial
     Term and each Renewal  Term so long as Tenant is not in default  beyond the
     expiration  of any cure  period.  Notwithstanding  anything to the contrary
     contained in this  Agreement,  if the Site is subject to the Ground  Lease,
     Owner may terminate this Agreement upon the termination of Owner's right to
     possession of the Site under the Ground Lease.  Owner will not do, attempt,

                                       3
<PAGE>

     permit or suffer  anything  to be done  which  could be  construed  to be a
     violation of the Ground Lease nor shall Owner surrender the Ground Lease to
     the Ground Lessor, enter into any amendment of the Ground Lease which would
     adversely affect Tenant,  fail to observe or perform any obligation imposed
     upon  Owner as the  tenant  under the Ground  Lease  beyond any  applicable
     notice or grace  period.  Provided  Tenant  exercises its election to renew
     this Agreement in accordance with the terms of this Agreement,  Owner shall
     renew the Ground Lease to assure Tenant the quiet and peaceful enjoyment of
     the Site for the Initial Term and any Renewal Term of this Agreement.  Upon
     request  from Tenant,  Owner will furnish  Tenant with a copy of the Ground
     Lease (with  business  terms  deleted)  attached  hereto as Exhibit E. This
     Agreement  is  subordinate  to any  mortgage or deed of trust now of record
     against the Site.  Promptly  after this  Agreement  is fully  executed,  if
     requested by Tenant,  Owner will request the holder of any such mortgage or
     deed of trust to execute a non-disturbance  agreement in a form provided by
     Tenant,  and Owner will  cooperate  with  Tenant at Tenant's  sole  expense
     toward such an end to the extent that such cooperation does not cause Owner
     additional financial  liability.  Owner will request that the Ground Lessor
     execute a non-disturbance  agreement in a form provided by Tenant and Owner
     will  cooperate  with Tenant at Tenant's sole expense toward such an end to
     the extent that such cooperation does not cause Owner additional  financial
     liability.  Tenant will not, directly or indirectly, on behalf of itself or
     any third party, communicate, negotiate, and/or contract with the lessor of
     the Ground Lease without first  providing  advance  written notice to Owner
     specifying  the purpose  for said  communications  with Owner.  In no event
     shall Tenant seek to interfere with the  contractual  relationship  between
     Owner and the lessor of the Ground Agreement.  A default by Owner under the
     Ground  Lease,  beyond  the  applicable  notice  or  grace  period,   shall
     constitute  a default  under this  Agreement.  Owner shall  provide  Tenant
     notice of any  default by Owner  under the Ground  Lease not less than five
     (5) days after the event of default. Tenant shall have the right to set-off
     against  the rent  accruing  hereunder  any sums  paid by  Tenant to cure a
     default by Owner under the Ground Lease.

6.   ASSIGNMENT/SUBLETTING. Tenant will not assign or transfer this Agreement or
     sublet all or any portion of the Site in  contravention  of this  Agreement
     without  the prior  written  consent of Owner,  which  consent  will not be
     unreasonably withheld,  delayed or conditioned.  However, tenant may assign

                                       4
<PAGE>

     without  the  Owner's  prior  written  consent  to any  party  controlling,
     controlled  by or  under  common  control  with  Tenant  provided  that the
     assuming  party  has  comparable  credit  quality  to  that of  Tenant.  An
     assignment,  transfer  or  sublet by Tenant  as  described  above  will not
     relieve Tenant of any obligations or liability hereunder.  Tenant may, upon
     notice to Owner,  mortgage or grant a security  interest in this  Agreement
     and the  Equipment  and may assign this  Agreement and the Equipment to any
     such  Secured  Parties or holders of  security  interests  including  their
     successors and assigns  (hereinafter  collectively  referred to as "Secured
     Parties").  In such event,  Owner shall  execute  such consent to leasehold
     financing as may reasonably be required by Secured Parties. Owner agrees to
     notify Tenant and Tenant's Secured Parties simultaneously of any default by
     Tenant and to give  Secured  Parties  the same right to cure any default as
     Tenant  except that the cure period for any Secured Party shall not be less
     than 10 business days after the receipt of the default  notice.  Tenant may
     assign  this  Agreement  without the  consent of Owner to an  affiliate  of
     Tenant or to an entity which acquires Tenant's  communications license from
     the Federal Communications Commission. In the event an assignment occurs as
     stated herein,  the assuming party must have  comparable  credit quality to
     that  of  Tenant.  If a  termination,  disaffirmance  or  rejection  of the
     Agreement  pursuant to any laws  (including  any  bankruptcy  or insolvency
     laws) by Tenant shall occur, or if Owner shall terminate this Agreement for
     any reason, Owner shall terminate this Agreement for any reason, Owner will
     give to the Secured  Parties  prompt notice thereof and Owner will give the
     Secured  Parties  the right to enter upon the Site  during a 30-day  period
     commencing  upon the Secured Party's receipt of such notice for the purpose
     of removing any  Equipment.  Owner  acknowledges  that the Secured  Parties
     shall  be  third-party  beneficiaries  of this  Agreement.

7.   ACCESS AND SECURITY. Tenant will have the reasonable right of access to the
     Site where its equipment is located;  provided that, Tenant must give Owner
     twenty-four  (24) hour  notice  for  access to climb the  tower;  all other
     access to the ground  equipment  shall be available 24 hours/7 days a week.

                                       5
<PAGE>

     In the event of an emergency  situation which poses an immediate  threat of
     substantial  harm or damage  to  persons  and/or  property  (including  the
     continued  operations  of  Tenant's  telecommunications   equipment)  which
     requires entry on the Site,  Tenant may enter the Site and take the actions
     that are  required to protect  individuals  or personal  property  from the
     immediate  threat of  substantial  harm or damage;  provided  that promptly
     after the  emergency  entry and in no event  later  than  twenty-four  (24)
     hours,  Tenant  gives  telephonic  and written  notice to Owner of Tenant's
     entry onto the Site.

     ACCESS  NOTICE  SHALL BE SUBMITTED  TO SBA TOWERS,  INC.,  DIRECTOR OF SITE
     MANAGEMENT.

8.   NOTICES. All notices must be in writing and are effective when deposited in
     the U.S. mail,  certified and postage  prepaid,  or when sent via overnight
     delivery, to the address set forth below, or as otherwise provided by law.

     Owner:  SBA Towers, Inc.
     One Town Center Road, 3rd Floor
     Boca Raton, FL 33486
     Attention:  Site Administration
     (800) 487-7483
     Tax I.D.:  65-0754577

     Tenant:

     Tax I.D.:

9.   INSTALLATION  AND  IMPROVEMENTS.   Prior  to  installing  or  allowing  any
     Equipment to be installed at the Site or making any changes,  modifications
     or alterations to such Equipment,  Tenant, at its expense,  will obtain all
     required  governmental  approvals  and  will  submit  to  Owner  plans  and
     specifications  and  proposed  dates of the planned  installation  or other
     activity,  proposed to be performed,  for Owner's  approval  which approval
     will not be  unreasonably  withheld,  including,  if requested by Owner,  a
     tower loading study and/or an intermodulation study performed and certified
     by an independent licensed  professional  engineer.  All installation of or

                                       6
<PAGE>
                                        [***] - CONFIDENTIAL TREATMENT REQUESTED

     other work on Tenant's  equipment will be at Tenant's sole expense and will
     be performed by Owner or one of Owner's  affiliates or  subsidiaries  which
     services  shall be performed at fair market rates.  In the event that Owner
     does not offer to perform such services at fair market  rates,  Tenant will
     have the right to utilize a  different  subcontractor  to perform the work,
     provided,  however,  that Tenant shall give Owner the right to perform such
     work at the price at which the subcontractor that Tenant wished to hire has
     offered to perform such work. Any  subcontractor  must be approved by Owner
     prior to commencement of work. All installations, operation and maintenance
     of  Equipment  must be in  accordance  with  Owner's  policies set forth in
     EXHIBIT D. All installation of or other work on Tenant's  equipment will be
     at Tenant's  sole  expense.  If the work is performed by someone other than
     Owner  or  Owner's  affiliate,  upon  completion  of  installation  of  any
     Equipment on the Site,  Owner will have the right to inspect and reasonably
     approve  all  installation  work.  Owner  reserves  the  right to  prohibit
     operation of any Equipment it reasonably deems to be improperly  installed,
     unsafe or not included in the  installation  design  plan.  Owner agrees to
     cooperate with Tenant's  reasonable  requests,  at Tenant's  expense,  with
     respect to obtaining  any required  zoning  approvals  for the Site and any
     improvements.  Upon  termination  or expiration of this  Agreement,  Tenant
     shall  remove its  Equipment  and  Improvements  and will repair any damage
     caused  by the  removal  of the  Equipment  from the Site to the  condition
     existing on the  Commencement  Date,  except for the ordinary wear and tear
     and insured  casualty  loss. So long as Tenant's  Equipment  remains on the
     Site after the termination date (even if it has been disconnected),  Tenant
     will  pay to Owner a  hold-over  fee  equal to [***] of the  then-effective
     monthly  rent  ("Hold-Over  Fee"),  prorated  from  the  effective  date of
     termination  to the date the  Equipment is removed from the Site,  provided
     the  equipment  is  removed  within  120  days  of the  effective  date  of
     termination or expiration ("Removal Period").  If Tenant's equipment is not
     removed within 45 days after the Removal Period, Owner shall have the right
     to disconnect and remove Tenant's equipment and Tenant will continue to pay
     the Hold-Over Fee.

10.  COMPLIANCE  WITH LAWS.  Tenant  agrees to take the Site in strictly "AS IS"
     condition subject, however to the Owner's obligation to maintain and repair
     and further  subject to the  representations,  warranties  and  indemnities
     given in this  Agreement  by Owner.  Owner  represents  that the Site,  its
     property contiguous thereto,  and all improvements  located thereon, are in

                                       7
<PAGE>

     substantial  compliance  with building,  life/safety,  disability and other
     laws, codes and regulations of applicable governmental authorities.  Tenant
     will  substantially  comply  with  all  applicable  laws  relating  to  its
     possession  and use of the Site and its  Equipment.  Upon request by Owner,
     Tenant will produce  satisfactory  evidence that all equipment installed at
     the Site complies with federal  regulations  pertaining to  radio-frequency
     radiation  standards  and is licensed  with the FCC, if  applicable.  Owner
     accepts sole  responsibility  for the Site's  compliance  with all tower or
     building  marking  and  lighting  regulations  promulgated  by the  Federal
     Aviation  Administration  "FAA" or the  Federal  Communications  Commission
     "FCC," as applicable.  Owner represents and warrants that the Site complies
     with all  applicable  tower or  building  making  or  lighting  regulations
     promulgated by the FAA or the FCC. Owner agrees that Tenant may install, at
     Tenant's  sole cost and expense and as required for Tenant's  Equipment,  a
     (i) within the Site,  backup generator to provide backup power in the event
     of a power outage at the Site,  and/or (ii) tower lighting alarm monitoring
     system  (including,  but not limited to,  commercial  power and a dedicated
     surveillance  telephone  line) to monitor the status of the  tower/building
     lighting.   Tenant's   installation   of  such  backup   generator   and/or
     tower/building  lighting alarm monitoring  system will not relieve Owner of
     its primary  responsibility  for compliance  with all  applicable  tower or
     building marking and lighting requirements.

11.  INSURANCE.  Tenant  and  Owner  will each  procure  and  maintain  a public
     liability policy,  with limits of $1,000,000 for bodily injury,  $1,000,000
     for property damage, $2,000,000 aggregate,  which minimum Owner may require
     adjusting  at each  Renewal  Term,  with a  certificate  of insurance to be
     furnished to the other  within  thirty (30) days of written  request.  Such
     policy  will  provide  that  cancellation  will not occur  without at least
     fifteen (15) business days prior written  notice to the other party to this
     Agreement.  Tenant will cause Owner to be named as an additional insured on
     such  policy  and Owner  will  cause  Tenant  to be named as an  additional
     insured on such policy.  Owner shall also maintain at Owner's sole cost and

                                       8
<PAGE>

     expense a fire and extended coverage casualty insurance policy insuring the
     Tower  and  related  improvements  for  its  full  replacement  value.  All
     insurance  policies required under this Agreement shall contain a waiver of
     subrogation provision under the terms of which the insurance carrier waives
     all of its rights to proceed  against Owner or Tenant,  as the case may be.
     If waivers of subrogation are obtained,  the party procuring such insurance
     shall use its best efforts to obtain a certificate of insurance which notes
     the  waiver of  subrogation  and a copy of the  insurance  which  notes the
     waiver of subrogation and a copy of the insurance policy  endorsement which
     evidenced  the  insurance  carrier's  assent to the waiver of  subrogation.
     Owner  and   Tenant   each   release   the   other  and  their   respective
     representatives  from any  claims by them or any one  claiming  through  or
     under them by way of  subrogation  or otherwise for damage to any person or
     to the  Site  and to the  fixtures,  personal  property,  improvements  and
     alterations  in or on the Site  that are  caused by or  result  from  risks
     insured against under any insurance  policy carried by them and required by
     this Agreement; provided that such releasees shall be effective only if and
     to the  extent  that the  same do not  diminish  or  adversely  affect  the
     coverage  under  such  insurance  policies.  Owner  shall  be  named  as an
     additional  insured on any insurance  policy  procured by Tenant and Tenant
     shall be named as an additional insured on any insurance policy procured by
     Owner pursuant to this Agreement. Owner shall seek to obtain from any other
     subsequent occupant of the Site a waiver of subrogation provision under the
     terms of which the other  occupant's  insurance  carrier  waives all of its
     rights to proceed  against  Tenant.  If Tenant is notified that a waiver of
     subrogation  has been  obtained  for the  benefit of Tenant  from the other
     occupant,  Tenant shall also seek to obtain a waiver of subrogation for the
     benefit  of the  occupant  who  obtained  a waiver of  subrogation  for the
     benefit of the Tenant.  If waivers of subrogation  are obtained,  the party
     procuring such insurance shall use its best efforts to obtain a certificate
     of  insurance  which  notes  the  waiver of  subrogation  and a copy of the
     insurance policy endorsement which evidenced the insurance carrier's assent
     to the waiver of subrogation.

12.  INTERFERENCE.  Tenant  understands  that  it is  the  intent  of  Owner  to
     accommodate  as many users as possible and that Owner may rent space to any
     other entity or person(s) desiring its facilities.  Tenant shall not cause,
     by its  transmitter  or other  activities,  interference  to Owner or other
     tenants  that have  previously  commenced  rental  payments.  Tenant  shall

                                       9
<PAGE>

     provide  Owner with a list of  frequencies  to be used at the site prior to
     putting said  frequencies  into  operation.  If  interference  occurs which
     involves  Tenant,  Owner  may  require  that an  intermodulation  study  be
     conducted at Tenant's cost. If Owner  determines  that the  interference is
     the  responsibility  of Tenant,  Owner will notify  Tenant and Tenant shall
     have  five (5)  business  days  from  the date of  notice  to  correct  the
     interference and if not corrected, Tenant shall cease, and Owner shall have
     all rights to any legal means  necessary  including  injunctive  relief and
     self  help  remedies  to cause  Tenant to cease,  transmission  except  for
     intermittent  testing for the purpose of correcting  the  interference.  If
     interference  cannot be  corrected  within  sixty (60)  calendar  days from
     Tenant's receipt of Owner's notice, then Owner may terminate this Agreement
     without  further  obligations  to Tenant.  Owner shall be  responsible  for
     curing any and all interference to the operation of the Equipment caused by
     the  operation  of equipment  owned by Owner of equipment  owned by a third
     party to this  Agreement  which is in privity of contract  with Owner whose
     occupancy  of  the  Site  commences   after  the  date  of  this  Agreement
     ("Subsequent  User").  In  the  event  that  such  interference  cannot  be
     eliminated or rectified to Tenant's personal  satisfaction  within five (5)
     business  days of the  receipt  of  notice  by  Owner  from  Tenant  of the
     existence  of  interference   ("Notice  Date"),  Owner  shall  require  the
     Subsequent  User  which is  believed  to be  causing  the  interference  to
     disconnect  utility  service  to their  equipment  until  such  time as the
     interference can be eliminated or rectified to the personal satisfaction of
     Tenant. If said interference  cannot be eliminated or rectified to Tenant's
     personal  satisfaction  within  sixty (60) days of the Notice  Date,  Owner
     shall at the request of Tenant require the Subsequent User which is causing
     the interference to immediately remove its equipment from the Tower and the
     Site or Tenant may at the sole  discretion and option of Tenant,  terminate
     this Agreement upon notice to Owner.

13.  UTILITIES. Owner represents that utilities adequate for Tenant's use of the
     Site are  available.  Tenant may utilize  existing  panels and  connections
     within  or upon the Site for the  connection  of  electrical  utilities  to

                                       10
<PAGE>

     service the Equipment.  Tenant will pay for all utilities used by it at the
     Site.  Tenant  will be  responsible  directly  to the  appropriate  utility
     companies for all utilities required for Tenant's use of the Site. However,
     Owner agrees to cooperate with Tenant, at Tenant's expense,  in its efforts
     to  obtain  utilities  from  any  location  provided  by the  Owner  or the
     servicing utility.  Should electric power be provided by Owner, Tenant will
     install  an  electric  meter and usage will be read by Owner or, at Owner's
     option, by Tenant,  and the cost of electricity used by Tenant will be paid
     by Tenant to Owner  annually  as a payment  separate  from rent and will be
     computed at the then current public  utility rate. In addition,  Tenant may
     at its option and at its expense, install a separate electric meter and pay
     its  electricity  costs  directly  to  the  appropriate   utility  company.
     Temporary  interruption  in the power provided by the  facilities  will not
     render Owner liable in any respect for damages to either person or property
     nor relieve Tenant from fulfillment of any covenant or agreement hereof. If
     any of  Tenant's  communications  Equipment  fails  because  of loss of any
     electrical power, and the restoration of the electrical power is within the
     reasonable control of Owner, Owner will use reasonable diligence to restore
     the  electrical  power  promptly,  but will  have no claim for  damages  on
     account of an  interruption  in electrical  service  occasioned  thereby or
     resulting therefrom.  Notwithstanding the foregoing,  Tenant will cooperate
     with  Owner in  shutting  down  (and  Owner may shut  down) the  electrical
     service to the Site and it's  Equipment in  connection  with any  necessary
     maintenance  operation  conducted for the Site or the  facilities  thereon.
     Owner agrees to give Tenant  reasonable  prior notice,  except in emergency
     situations, which notice may be oral.

14.  TERMINATION  BY TENANT.  Tenant may terminate this Agreement at any time by
     notice to Owner without further liability if (a) Owner fails to have proper
     possession  of the Site or authority to enter into this  Agreement;  (b) in
     the event of a default of any  covenant  or term  hereof by the Owner which
     default is not cured within 60 days of receipt of written notice of default
     (without,  however,  limiting  any other  rights  available  to the parties
     pursuant to other  provisions  hereof);  provided,  that if Owner commences
     efforts to cure the default  within such  period the  non-defaulting  party
     shall no longer be entitled  to declare a default;  (c) if Tenant is unable
     to obtain or  maintain  through no fault of Tenant any  license,  permit or
     other Governmental  Approval necessary to the construction and operation of
     the  Tenant's  Equipment or business;

                                       11
<PAGE>

15.  DEFAULT. If either party is in default under this Agreement for a period of
     (a) 20 business days  following  receipt of notice from the  non-defaulting
     party with respect to a default which may be cured solely by the payment of
     money, or (b) 30 days following  receipt of notice from the  non-defaulting
     party  with  respect  to a  default  which  may not be cured  solely by the
     payment of money,  then,  in either  event,  the  non-defaulting  party may
     pursue any  remedies  available  to it against the  defaulting  party under
     applicable law, including,  but not limited to, the right to terminate this
     Agreement. If the non-monetary default may not reasonably be cured within a
     30 day period, this Agreement may not be terminated if the defaulting party
     commences action to cure the default within such 30 day period and proceeds
     with due  diligence to fully cure the default.

16.  TAXES.  Tenant will be  responsible  for payment of all  personal  property
     taxes,  states sales or use taxes assessed directly upon and arising solely
     from its use of its Equipment on the Site.  Owner will be  responsible  for
     payment  of all  real  property  taxes,  and any  personal  property  taxes
     attributable to the Site and the Tower except Tenant shall pay any increase
     in real estate taxes levied against the Site which are solely  attributable
     to Tenant's use of the Site.  These  additional taxes will be paid to Owner
     by Tenant within twenty (20) business days after written  demand thereof by
     Owner  accompanied  by  copies  of  each  tax  bill,  service  bill  and/or
     assessment notice which is the basis for the demand.

17.  INDEMNITY.  Owner and Tenant each  indemnifies  the other against and holds
     the other harmless from any and all costs (including  reasonable attorneys'
     fees and costs) and claims of  liability or loss which arise out of the use
     and/or occupancy of the Site by the indemnifying party, including,  without
     limitation,  any damage  occurring  outside of the Site in connection  with
     Tenant's  installation  of Equipment.  This indemnity does not apply to any
     claims arising from the gross  negligence or intentional  misconduct of the
     indemnified  party.  Except  for  its  own  acts  of  gross  negligence  or
     intentional misconduct, Owner will have no liability for any loss or damage

                                       12
<PAGE>

     due to personal injury or death,  property damage,  loss of revenues due to
     discontinuance of operations at the Site, libel or slander, or imperfect or
     unsatisfactory  communications  experienced  by the  Tenant  for any reason
     whatsoever.  Owner does hereby agree to indemnify and hold Tenant  harmless
     from any and all losses damages, fines, penalties,  liabilities or costs of
     any kind which may arise from the improper design, maintenance or operation
     of the  Tower or tower  lighting  systems  or which may be  imposed  by the
     Federal Aviation Administration,  Federal Communications  Commission or any
     other  federal,  state or local agency  arising  from the improper  design,
     maintenance or operation of the Tower and the tower lighting  systems.

18.  HAZARDOUS  SUBSTANCES.  Owner  represents  that it has no  knowledge of any
     substance,  chemical or waste (collectively,  "substance") on the Site that
     is identified as hazardous,  toxic or dangerous in any applicable  federal,
     state or local law or regulation. Tenant will not introduce or use any such
     substance  on the Site in violation  of any  applicable  law, or permit any
     discharge  or  release of such  substance  on the Site.  Owner,  its heirs,
     grantees,  successors,  and assigns shall indemnify,  defend, reimburse and
     hold  harmless  Tenant from and against any and all  environmental  damages
     arising from the presence of Hazardous Materials upon, about or beneath the
     Site or migrating  to or from the Site or arising in any manner  whatsoever
     out of the violation of any activities  thereon,  which conditions exist or
     existed prior to or at the time of the execution of this Agreement or which
     may occur at any time in the future.

19.  LIENS.  Tenant will not permit any mechanics,  materialman's or other liens
     to stand against the Site for any labor or material furnished the Tenant in
     connection  with work of any  character  performed on the Site by or at the
     direction of the Tenant. In the event that any notice of lien will be filed
     or given,  Tenant  will,  within  thirty (30) days after the date of filing
     cause the same to be released or discharged by either payment,  deposit, or
     bond.  Owner will be  indemnified  by Tenant  from and  against any losses,
     damages,  costs, expenses,  fees or penalties suffered or incurred by Owner
     on  account  of  the  filing  of  the  claim  or  lien.

20.  CASUALTY  OR  CONDEMNATION.  In the  event of any  damage,  destruction  or
     condemnation  of the Site, or any party thereof,  not caused by Tenant that
     renders the Site unusable or inoperable, Owner will have the right, but not

                                       13
<PAGE>

     the obligation, to provide an alternate location,  whether on the same Site
     or another Site,  or to terminate  this  Agreement  within thirty (30) days
     after the damage, destruction or condemnation.  If Owner does not terminate
     this Agreement: (i) the rent payable hereunder will be reduced or abated in
     proportion  to the actual  reduction or  abatement of use of the Site;  and
     (ii) Owner will make any necessary repairs to the Site caused by the damage
     or destruction  and will be entitled to use any and all insurance  proceeds
     to pay for any repairs.  Owner will in no event be liable to Tenant for any
     damage to or loss of Tenant's  Equipment,  or loss or damage  sustained  by
     reason of any business  interruption  suffered by reason of any act of God,
     by  Owner's  act or  omission,  or Owner's  violation  of any of the terms,
     covenants or conditions of this Agreement,  unless caused solely by Owner's
     intentional  misconduct or gross negligence.

21.  CONFIDENTIALITY.  Tenant  agrees not to discuss  publicly,  advertise,  nor
     publish in any newspaper,  journal, periodical,  magazine, or other form of
     mass media the terms or  conditions  of this  Agreement  or the  underlying
     Ground  Lease.  Doing so shall  constitute a default  under this  Agreement
     immediately.  It is  agreeable  that  Tenant  will not  discuss  terms  and
     conditions with any parties not directly involved with this Agreement.

22.  BANKRUPTCY  AND  INSOLVENCY.  Owner and Tenant  agree  that this  Agreement
     constitutes a lease of non-residential real property for the purposes of 11
     U.S.C.  Section  365(d)(4) or any such successor  provision.

23.  WAIVER OF OWNER'S LIEN.  Owner hereby waives any and all lien rights it may
     have,  statutory  or  otherwise,  in and to the  Equipment  or any  portion
     thereof,  regardless  of  whether  or not same is deemed  real or  personal
     property under applicable laws.

24.  WAIVER OF INCIDENTAL AND CONSEQUENTIAL  DAMAGES.  Owner will not assert any
     claim  whatsoever  against Tenant for loss of  anticipatory  profits or any
     other indirect,  special,  incidental or consequential  damages incurred by
     Owner as a result of the construction, maintenance, operation or use of the
     Site or the  Easement  by Tenant.

25.  MISCELLANEOUS.   (a)  This  Agreement  applies  to  and  binds  the  heirs,
     successors,  executors,  administrators  and assigns of the parties to this
     Agreement; (b) This Agreement is governed by the laws of the State in which
     the Site is located;  (c) If requested by Tenant,  Owner agrees promptly to

                                       14
<PAGE>

     execute and deliver to Tenant a recordable  Memorandum of this Agreement in
     the  form of  EXHIBIT  C;  (d)  This  Agreement  (including  the  EXHIBITS)
     constitutes  the entire  Agreement  between the parties and  supersedes all
     prior  written  and  verbal   agreements,   representations,   promises  or
     understandings  between the parties.  Any amendments to this Agreement must
     be in writing and executed by both  parties;  (e) If any  provision of this
     Agreement  is  invalid or  unenforceable  with  respect  to any party,  the
     remainder of this Agreement or the application of such provision to persons
     other than those as to whom it is held invalid or  unenforceable,  will not
     be  affected  and  each  provision  of this  Agreement  will be  valid  and
     enforceable  to the fullest  extent  permitted by law;  (f) The  prevailing
     party  in any  action  or  proceeding  in  court or  mutually  agreed  upon
     arbitration  proceeding to enforce the terms of this  Agreement is entitled
     to receive its reasonable attorneys' fees and other reasonable  enforcement
     costs and expenses from the non-prevailing  party; and (g) Failure or delay
     on the part of Tenant or Owner to exercise any right,  power,  or privilege
     hereunder will not operate as a waiver  thereof;  waiver of a breach of any
     provision  hereof under any  circumstances  will not constitute a waiver of
     any  subsequent  breach  of the  provision,  or of a  breach  of any  other
     provision of this  Agreement.  The  following  EXHIBITS are attached to and
     made a part of this Agreement: EXHIBIT "A", "B", "C", and "D".

     TENANT:                          OWNER:  SBA TOWERS, INC.

     ____________________________     ______________________________
     By:                              By:
     Title:                           Title:
     Tax No.                          Tax No. 65-0754577
     Address:                         Address: One Town Center Road, 3rd Floor
                                               Boca Raton, FL 33486
                                               Attention: Site Administration

     Date: ______________________     Date: _______________________

     Witness: ___________________     Witness: ____________________

     Witness: ___________________     Witness: ____________________

OWNER NOTARY BLOCK:

STATE OF ________________

COUNTY OF _______________

The  foregoing   instrument  was  acknowledged   before  me  this  ____  day  of
____________, 1999 by __________________, a representative of SBA Towers, Inc. a
Florida  corporation who is personally known to me or produced  ________________
as identification.

                                    ____________________________________
      NOTARIAL SEAL                 (OFFICIAL NOTARY SIGNATURE)
                                    NOTARY PUBLIC-STATE OF _____________

                                    ____________________________________
     My commission expires:         (NAME OF NOTARY)
     ______________________         COMMISSION NUMBER:__________________

                                       15
<PAGE>

TENANT NOTARY BLOCK:

STATE OF _________________ )
                           )
COUNTY OF ________________ )

     The  foregoing  instrument  was  acknowledged  before  me this  ____ day of
____________,   19__   by   ____________________,    ____________________,    of
____________________,   a   ____________________   for  and  on  behalf  of  the
Corporation.

                        _______________________________
                                 NOTARY PUBLIC
                        My Commission Expires: ________

                                    ____________________________________
      NOTARIAL SEAL                 (OFFICIAL NOTARY SIGNATURE)
                                    NOTARY PUBLIC-STATE OF _____________

                                    ____________________________________
     My commission expires:         (NAME OF NOTARY)
     ______________________         COMMISSION NUMBER:__________________

                                       16

SITE I.D.                                     TENANT SITE ID:
SITE NAME:                                    TENANT SITE NAME:

                                    EXHIBIT A
                                SITE DESCRIPTION

Site situated in the City of      , County of        State of         commonly
described as follows:

Legal Description:

Longitude:                 Latitude:

Sketch of Site:

                                       1
<PAGE>

SITE I.D.                                     TENANT SITE ID:
SITE NAME:                                    TENANT SITE NAME:

                                    EXHIBIT B
                           ANTENNA AND EQUIPMENT LIST

ANTENNA(S):
         Quantity:
         Type:
         Manufacturer
         Model:
         Dimensions:
         Weight:
         Mounting: ____________ rad center
                   Orientation:______(degree), ______ (degree) & ______(degree)
         Cable:
                  Number of Lines:
                  Type:
                  Size:

DISH:
         Quantity:
         Manufacturer:
         Model:
         Dimensions:
         Weight:
         Mount:
                  at       ' height level.
                  Orientation
         Cable/Type Mount:

GPS Receiver:
         Quantity:
         Manufacturer:
         Model:
         Dimensions:
         Mount Location:
         Cable/Mount:

GROUND SPACE REQUIREMENTS:

         Tenant provided Shelter
                  Dimensions:
                  Type Shelter:

                                       2
<PAGE>

SITE I.D.                                           TENANT SITE ID:
SITE NAME:                                          TENANT SITE NAME:

                             Existing Shelter Space
                               Dimensions Needed:

IF EXISTING SPACE IN OWNER'S  SHELTER IS BEING USED,  PLEASE  PROVIDE  EQUIPMENT
SPECIFICATIONS:

 Transmitter
          Quantity:
          Manufacturer
          Model:
          Power Output (Watts):

         Transmitter Cabinet
                  Quantity:
                  Manufacturer
                  Model:
                  Dimensions:
                  Weight

FREQUENCIES:

ERP:

                                       3
<PAGE>

SITE I.D.                                           TENANT SITE ID:
SITE NAME:                                          TENANT SITE NAME:

                                    EXHIBIT C

                      MEMORANDUM OF ANTENNA SITE AGREEMENT
                      MEMORANDUM OF ANTENNA SITE AGREEMENT

This  memorandum  evidences  that a lease was made and  entered  into by written
ANTENNA SITE AGREEMENT dated , between SBA Towers,  Inc., a Florida Corporation,
"Owner  ________________,  a ____________  Corporation,  "Tenant," the terms and
conditions of which are incorporated herein by reference.

Such  Agreement  provides  in part that  Owner  leases to Tenant a certain  site
"Site"  located at , City of , County of , State of , within the  property of or
under the control of Owner which is described in Exhibit A attached hereto, with
grant of easement for unrestricted  rights of access thereto and to electric and
telephone  facilities  for a term of five (5) years  commencing on which term is
subject to three (3) additional five (5) year extension periods by Tenant.

IN WITNESS WHEREOF,  the parties have executed this Memorandum as of the day and
year first above written.

OWNER:

______________________________              Address:
By:                                         One Town Center Road, 3d Floor
Title:                                      Boca Raton, FL 33486
Tax No: 65-0754577                          Date:_______________________

                                       4
<PAGE>

OWNER NOTARY BLOCK:

STATE OF ____________                       COUNTY OF ____________

The foregoing instrument was acknowledged before me this ____ day of __________,
1999, ________________,  ________________, a representative of SBA Towers, Inc.,
a  Florida,  who is  personally  known  to me or  produced  ________________  as
identification.

                  NOTARIAL SEAL       ____________________________________
                                      (OFFICIAL NOTARY SIGNATURE)
                                      NOTARY PUBLIC-STATE OF _____________

                                      ____________________________________
         My commission expires:       (NAME OF NOTARY)
         ___________________          COMMISSION NUMBER:__________________

Witness: __________________________

         __________________________
         Print Name

Witness: __________________________

         __________________________
         Print Name

                                       5
<PAGE>

SITE I.D.                                      TENANT SITE ID:
SITE NAME:                                     TENANT SITE NAME:

                 MEMORANDUM OF ANTENNA SITE AGREEMENT CONTINUED

TENANT:

__________________________                  Address
By:
Title:
Tax No.                                     Date:___________________

TENANT NOTARY BLOCK:

STATE OF ____________                       COUNTY OF ______________

The  foregoing   instrument  was  acknowledged   before  me  this  ____  day  of
______________,   ______________  by  ________________,   ________________,   an
individual or a representative of ______________,  a ______________ Corporation,
or by  ____________,  partner  (or  agent)  on  behalf  of  ________________,  a
partnership  who  is  personally  known  to  me  or  produced   ____________  as
identification.

                  NOTARIAL SEAL     ____________________________________
                                    (OFFICIAL NOTARY SIGNATURE)
                                    NOTARY PUBLIC-STATE OF _____________

                                    ____________________________________
         My commission expires:     (NAME OF NOTARY)
         ___________________        COMMISSION NUMBER:__________________

Witness: _______________________

         _______________________
         Print Name

Witness: _______________________

         _______________________
         Print Name

                                       6
<PAGE>

SITE I.D.                                      TENANT SITE ID:
SITE NAME:                                     TENANT SITE NAME:

                                    EXHIBIT D

                    MINIMUM SITE INSTALLATION, OCCUPANCY AND
                   MAINTENANCE REQUIREMENTS AND SPECIFICATIONS

PRE-INSTALLATION STANDARDS

1. PRIOR TO  INSTALLATION,  Tenant must provide  Owner with  complete  plans for
approval,  including list of proposed equipment and subcontractors.  No work may
be performed  until  approval has been given and all criteria have been met. All
equipment must be placed in approved  locations only, and Owner must approve any
changes before the installation  begins. The Owner or its  representative  shall
have the right to be on site during any work on the Site. Owner to provide price
quote for installation services based on Tenant's scope of work.

INSTALLATION

2.  (a)    The following minimum protective devices must be properly installed:

          (1)  Lightning  arrestors  in  feedline  at wall  feedthru  ports (SBA
               multi-tenant  buildings).   (PCS  providers  install  jumpers  to
               extend/connect to cabinet like enclosures).

          (2)  Surge protectors in any AC & phone line circuit.

          (3)  Transmitter RF shielding. (Must be in place during operation)

          (4)  Isolator/harmonic filter. (Must be in place during operation)

          (5)  Duplexer  or cavity  bandpass  filter.  (Must be in place  during
               operation)

     (b)  All  equipment,  including  transmitters,   duplexers,  isolators  and
          multicouplers,  must be housed in a metal cabinet or rack mounted.  No
          control  stations or  inverted  transmit/receive  frequency  pairs are
          allowed on repeater sites.

     (c)  All   transmission   lines   entering   the   shelter   must  be  1/2"
          Heliax/Wellflex or better via a wall feedthru plate and must terminate
          in a properly installed lightning arrestor with an ID tag on both ends
          of the  line.

     (d)  Solid outer shield cable such as Superflex or Heliax/Wellflex  must be
          used for all intercabling outside the cabinet.  Under no circumstances
          will the use of foil  shielded  or  braided  RF cable  (e.g.;  RGB) be
          permitted  outside  the  cabinet  except  for RG-6 quad  shield  cable
          installed on satellite  receive only systems.

     (e)  All  antenna,  power and phone  cables  will be  routed  and  properly
          supported to the base  station in a neat manner using routes  provided
          for that purpose. Tenant will provide individual Transient (SAD) surge
          protection  to each  circuit  used.  All phone  lines  will have (SAD)
          transient surge protection installed. All wiring and installation will
          be by means of clamping or strapping  and in no event will any members
          or other parts of the tower be drilled,  welded,  punched or otherwise
          mutilated  or altered.

                                       7
<PAGE>

     (f)  All  Tenants  are to  obtain  power  from the  power  panel  and/or AC
0          receptacle  provided  for  their  specific  use.

     (g)  All outside RF equipment  cabinets must be grounded to the site ground
          system  using  #2  solid  tinned  wire  with  cadweld,  silver  solder
          connections, or 2 hole lugs with Burndy type compression fittings. All
          inside RF  equipment  cabinets  must be  grounded  to the site  ground
          system using #2, or #6 green jacketed stranded wire with silver solder
          connections, or 2 hole lugs with Burndy type compression fittings.

     (h)  All  antenna  lines  will be  electrically  bonded to the tower at the
          antenna and at the bottom of the tower using  grounding kits installed
          per  manufacturer  specifications  and all  antenna  brackets  must be
          pre-approved.  All  antenna  lines  entering  the Site  will have COAX
          center pin  lightning  protection  installed  within two feet from the
          entry  port and  grounded  to  master  ground  bar in the Site  ground
          system.

     (i)  All equipment  cabinets  will be  identified  with a typed label under
          plastic on which the Tenant's  name,  address,  24 hour phone  number,
          call sign, and frequencies will be inscribed, in addition to a copy of
          Tenant's FCC license.

     (j)  Monitor  speakers will be disabled  except when  maintenance  is being
          performed.  All antenna  lines will be tagged  within 12 inches of the
          termination  of the feeder cable at both ends,  at the entrance to the
          building,   at  repeater  or  base   station   cabinet,   and  at  the
          multicoupler/combiner ports.

     (k)  All ferrous  metals  located  outside of the  building or on the tower
          will be either stainless steel or hot dipped  galvanized,  not plated.
          Painted  towers will  require the painting of feedlines by the Tenant,
          unless  installed  by  Owner,  prior to or  before  completion  of the
          install.  All transmission  lines are to be secured with factory hoist
          grips  every  150' and  secured  to the  tower or  cable  ladder  with
          stainless steel and/or hot dipped galvanized  hardware.  Plastic wraps
          and/or bandit type hangers will not be accepted.

GENERAL

3.   Tenant must  comply with any  applicable  instructions  regarding  any Site
     security system.

     (a)  Gates will remain  closed at all times unless  entering or exiting the
          premises.  When leaving the shelter,  ensure that all doors are locked
          and,  if  there is a  security  system,  it is  armed.

     (b)  Any tower elevator may be used only after receiving proper instruction
          on its use,  signing a waiver  and  receiving  authorization  from the
          Owner.

     (c)  This  Agreement  does  not  guarantee   parking  space.  If  space  is
          available,  park only in the  designated  areas.  Do not park so as to
          block any  ingress  or egress  except as may be  necessary  to load or
          unload  equipment.  Parking is for  temporary use while working at the
          Site.

     (d)  Do not adjust or tamper with  thermostats or HVAC systems.

     (e)  Access to the shelter roof is  restricted  to  authorized  maintenance
          personnel.

                                       8

                      ATTACHMENT C TO MASTER SITE AGREEMENT

Recording requested by and when
recorded return to:  Deborah L. Martinez
SBA TOWERS, INC. / BTS Leasing Dept.
One Town Center Road, 3rd Floor
Boca Raton, Florida 33486
(800) 487-7483 ext. 238

RE:  Site Lease
Recorded:____________________
Bk#:__________    Pg#:__________

                         SUBORDINATION.NON-DISTURBANCE
                            AND ATTORNMENT AGREEMENT

     THIS AGREEMENT (this "Agreement"), dated as of ______________, 1999, by and
between LEEMAN COMMERCIAL PAPER,  INC., as Administrative  Agent for the Lenders
parties to that  certain  Amended  and  Restated  Credit  Agreement  dated as of
February 5, 1999,  with an address of 3 World  Financial  Center,  New York, New
York, 10285, ("Lender"), and ____________________, a ____________________ having
its     principal     office    and    place    of    business     located    at
______________________________("Tenant").

                             PRELEMINARY STATEMENT:

     A.  Lender has made or  intends to make a loan or loans (the  "Loan") to or
for the benefit of SBA Towers, Inc., a Florida corporation  ("Owner") secured by
a leasehold  interest in certain real property more fully described on the metes
and bounds legal description which is attached hereto,  made a part hereof,  and
labeled Exhibit "N" and all improvements thereon and appurtenances  thereto (the
"Property").

     B. Lender has  required  the Loan to be secured to be secured by a mortgage
and security agreement (the "Mortgage") on the Property.

     C.  Owner and  Tenant  will enter into a site  lease,  (the  "Lease")  with
respect to certain premises (the "Premises') which are part of the Property,  as
more particularly set forth in the Lease.

     D.  Owner has  assigned  or is to  assign,  pursuant  to the  Mortgage  and
documents related thereto,  all of its right, title and interest in the Property
and the Lease and the rent payable thereunder to Lender as security, inter alia,
for the  performance  of its  obligations  made in connection  with the Loan.

                                       1
<PAGE>

     E.  Therefore,  in  consideration  of the mutual  benefits  accruing to the
parties hereto and other valuable consideration,  the receipt and sufficiency of
which are hereby acknowledged, Lender and Tenant hereby agree as follows:

          1. SUBORDINATION.  Notwithstanding  anything to the contrary set forth
in the Lease, but subject to the express provisions of this Agreement, the Lease
and the leasehold  estate created thereby shall at all times remain  subordinate
and inferior to the Mortgage and the lien thereof,  and to any and all renewals,
modifications, consolidations, replacements and extensions thereof.

          2.  NON-DISTURBANCE.  So long as Tenant is not in  default  (after the
expiration  of all periods  afforded to Tenant during which Tenant has the right
to cure any  default) in the payment of rent,  additional  rent or other sums or
charges now or hereafter  payable under the Lease,  or in the performance of any
of the terms,  covenants or conditions of the Lease, Tenant shall not, by reason
of foreclosure of the Mortgage,  acceptance of a deed in lieu of foreclosure, or
the exercise of any remedy  provided in the  Mortgage,  be disturbed in Tenant's
use,  occupancy and quiet enjoyment of the Premises during the term of the Lease
or any extension thereof set forth in the Lease, and Tenant shall have the right
to exercise  all  renewal  terms set forth in the Lease in  accordance  with the
terms of the Lease. In the event of a foreclosure of the Mortgage, acceptance of
a deed in lieu of  foreclosure,  or the  exercise of any remedy  provided in the
Mortgage,  Lender shall  recognize and confirm the validity and existence of the
Lease,  and Tenant's  right to remain in occupancy of the Premises and the Lease
will  continue  in full  force  and  effect  and  Tenant  will have the right to
continue  the Use  permitted  by the Lease and  occupancy  of the  Premises  and
operation of the Tenant's equipment pursuant to the provisions of the Lease.

         3.  ATTORNMENT.  Upon the  transfer  of the  Premises  to Lender or its
successors or assigns, whether through foreclosure,  deed in lieu of foreclosure
or otherwise,  Tenant shall attorn to such  transferee as the landlord under the
Lease.  Said  attornment  shall be  effective  and  self-operative  without  the
execution of any further  instruments  upon the  transferee's  succeeding to the
interest of the  landlord  under the Lease.  Tenant and Lender  shall,  however,
confirm the  provisions  of this  paragraph in writing upon request by either of
them.

          4. MISCELLANEOUS.

               (a) This  Agreement  shall  inure to the  benefit of the  parties
hereto, their successors and assigns;  provided,  however,  that in the event of
the  assignment  or transfer  of the  interest of Lender,  all  obligations  and
liabilities of Lender under this Agreement  shall  terminate,  and thereupon all
such  obligations and liabilities  shall be the  responsibility  of the party to
whom Lender's interest is assigned or transferred.

               (b) This  Agreement is the whole and only  agreement  between the
parties hereto with regard to the subject matter hereof.  This Agreement may not
be  modified  in any manner or  terminated  except by an  instrument  in writing
executed by the parties hereto.

                                       2
<PAGE>

               (c) This Agreement shall be deemed to have been made in the state
where the Property is located and the validity,  interpretation  and enforcement
of this Agreement shall be determined in accordance with the laws of such state.

               (d) In the event any legal action or  proceeding  is commenced to
interpret  or  enforce  the  terms  of,  or  obligations  arising  out of,  this
Agreement, or to recover damages for the breach thereof, the party prevailing in
any  such  action  or   proceeding   shall  be  entitled  to  recover  from  the
non-prevailing party all reasonable attorneys' fees, costs and expenses incurred
by the prevailing party.

               (e) Any notices or  communications  required or  permitted  to be
given or made  hereunder  shall be deemed to be so given or made when in writing
and delivered in person or sent by United States  registered or certified  mail,
postage prepaid, or by nationally recognized overnight courier service, directed
to the parties at the following  addresses listed above or to such other address
as such party may from time to time  designate  in  writing to the other  party.
Notices or  communications  mailed in the U.S. mail shall be deemed to be served
on the third business day following mailing,  notices or communication served by
hand or by overnight courier shall be deemed served upon receipt.

     IN WITNESS WHEREOF,  this Agreement has been signed and delivered as of the
date and year first above set forth.

                                     LENDER:
                                     LEHMAN COMMERCIAL PAPER, INC.,
                                     as Administrative Agent

Witnesses                            By:_______________________________

__________________________           Print:____________________________
Sign/Print Name                      Its:______________________________

__________________________
Sign/Print Name                      TENANT:

Witnesses                            By:_______________________________

__________________________           Name:_____________________________
Sign/Print Name                      Title:____________________________

__________________________
Sign/Print Name

Attest:___________________                 [AFFIX CORPORATE SEAL]
Name: ____________________
Title:____________________

                                       3
<PAGE>

LENDER:

STATE OF ______________

COUNTY OF _____________

The  foregoing   instrument  was  acknowledged   before  me  this  ____  day  of
____________,  1999, by  __________________________  as  ____________________ of
____________________  a  ____________________,  on  behalf  of the  corporation.
He/She  is  personally  known  to me or  has  produced  ____________________  as
identification.

(AFFIX NOTARIAL SEAL)            __________________________________________
                                 (OFFICIAL NOTARY SIGNATURE)
                                 Notary Public - State of _________________

                                 __________________________________________
                                 (Printed, Typed or Stamped name of Notary)

                                 Commission Number:________________________

                                       4
<PAGE>

TENANT:

STATE OF _______________

COUNTY OF ______________

     I, a Notary  Public  for said  County  and State,  do hereby  certify  that
__________________________   personally   appeared   before   me  this  day  and
acknowledged  that he/she is ____________  Secretary of  ____________________  a
____________________   and   general   partner   of   ____________________,    a
____________________,  and that by authority  and as the act of the  corporation
and on behalf of the  partnership,  the foregoing  instrument  was signed in its
name by its __________  President,  sealed with its corporate seal, and attested
by him/her as its __________ Secretary.

(AFFIX NOTARIAL SEAL)             ____________________________________
                                  (OFFICIAL NOTARY SIGNATURE)
                                  Notary Public - State of ___________

                                  ____________________________________
                                  (Printed, Typed or Stamped name of Notary)

                                  Commission Number:__________________

                                       5
<PAGE>

                                   EXHIBIT "A"

                        LEGAL DESCRIPTION OF THE PROPERTY

                                       6
<PAGE>
                                 FIRST ADDENDUM
                                       TO
                              MASTER SITE AGREEMENT

     THIS FIRST  ADDENDUM  TO MASTER  SITE  AGREEMENT  ("Addendum")  is made and
entered  into  this  _____ day of April,  2000 by and  among  SBA  Towers,  Inc.
("SBA"),  Bright Personal  Communications  Services,  LLC ("Bright") and Horizon
Personal  Communications,  Inc.  ("Horizon")  Bright and Horizon may hereinafter
collectively referred to as "Lessee".

     WHEREAS,  SBA and Horizon  entered into that certain  Master Site Agreement
("Horizon MSA") dated as of August 17, 1999;

     WHEREAS,  SBA and Bright  entered into that certain  Master Site  Agreement
("Bright MSA") dated as of the day of October, 1999 ;

     WHEREAS, SBA and Lessee both wish to modify the Horizon MSA and Bright MSA.

     NOW  THEREFORE,  for  good  and  valuable  consideration  the  receipt  and
sufficiency of which are hereby acknowledged,  SBA, Bright and Horizon do hereby
agree as follows:

     1.  Secured  Financing  Addendum.  SBA and Lessee  wish to modify  both the
Horizon MSA and Bright MSA to incorporate the following provisions:

          Financing.  Lessee  may,  upon  notice  to SBA,  mortgage  or  grant a
     security  interest in this MSA and the  Equipment,  and may assign this MSA
     and the Equipment to any such  mortgagees or holders of security  interests
     including their successors and assigns (hereinafter  collectively  referred
     to as "Secured Parties").  In such event, SBA shall execute such consent to
     leasehold  financing  as may  reasonably  be required  by Secured  Parties.
     Provided that SBA has been given  written  notice of the name and addresses
     of the Secured  Parties by Lessee,  SBA shall  notify  Lessee and  Lessee's
     Secured Parties simultaneously of any default by Lessee and to give Secured
     Parties the same right to cure any  default as Lessee  except that the cure
     period  for any  Secured  Party  shall not be less  than 10 days  after the
     receipt of the default notice. If a termination, disaffirmance or rejection
     of the MSA pursuant to any laws  (including  any  bankruptcy  or insolvency
     laws) by Lessee shall  occur,  or if SBA shall  terminate  this MSA for any
     reason,  SBA will give to the Secured Parties prompt notice thereof and SBA
     will give the Secured  Parties the right to enter upon the  Property or BTS
     site, as  applicable,  during a 30-day period  commencing  upon the Secured
     Party's  receipt of such notice for the purpose of removing any  Equipment.
     Upon written  request from Lessee,  SBA shall execute and deliver a written

                                       1
<PAGE>

     instrument  in  recordable  form   acknowledging  the  assignment  and  the
     foregoing agreements of SBA.

     2.  Consent  to  Assignment.   Notwithstanding  anything  to  the  contrary
contained  in this MSA,  SBA shall have the right to assign this MSA and any SLA
to an Affiliate of SBA, and upon such assignment, SBA shall be released from any
and all obligations  under the assigned MSA or SLA,  provided that such assignee
assumes all of SBA's obligations under such assigned agreement in writing at the
time of the  assignment.  For  purposes  of this MSA,  "Affiliates"  shall  mean
companies which control are controlled by, or under common control with SBA. For
purposes of this MSA, the word "control"  shall mean the ownership,  directly or
indirectly,  of the power to direct or cause the direction of the management and
policies of an entity,  or the power to veto major policy  decisions of any such
entity,  whether  through the  ownership  of voting  securities,  by contract or
otherwise.

     3. No Other Modifications.  The Horizon MSA and the Bright MSA shall remain
the entire  agreement  and  understanding  of SBA and Lessee with respect to the
subject  matter  thereof  except as  modified  by this  Addendum,  and except as
specifically  altered and amended herein, the Horizon MSA and the Bright MSA are
hereby ratified and confirmed in all respects, are in full force and effect, and
have not otherwise been amended, modified, extended or renewed, whether verbally
or in writing.

     IN WITNESS WHEREOF,  SBA, Horizon and Bright have executed this Addendum as
of the date and year first above written.

SBA TOWERS, INC.

Attest:________________________

Title:_________________________

HORIZON PERSONAL COMMUNICATIONS, INC.

Attest:________________________

Title:_________________________

BRIGHT PERSONAL COMMUNICATIONS SERVICES, LLC

                                       2
<PAGE>

Attest:________________________

Title:_________________________

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