LCC INTERNATIONAL INC
8-K, 2000-03-20
RADIOTELEPHONE COMMUNICATIONS
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<PAGE>   1


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K
                                 CURRENT REPORT
                     Pursuant to Section 13 or 15(d) of the
                        Securities Exchange Act of 1934

Date of Report (Date of earliest event reported):        Commission File Number:
               MARCH 3, 2000                                    0-21213

                            LCC INTERNATIONAL, INC.
             (Exact name of registrant as specified in its charter)

                 DELAWARE                                       54-1807038
       (State or other jurisdiction                            (IRS Employer
             of incorporation)                            Identification Number)

                            7925 JONES BRANCH DRIVE
                            MCLEAN, VIRGINIA  22102
              (Address of principal executive offices) (Zip Code)

              Registrant's telephone number, including area code:
                                 (703) 873-2000

         (Former name or former address, if changed since last report)

                                 NOT APPLICABLE


<PAGE>   2


                            LCC INTERNATIONAL, INC.

ITEM 2   ACQUISITION OR DISPOSITION OF ASSETS

         On March 3, 2000, Microcell Management, Inc. ("Microcell"), a
subsidiary of  LCC International, Inc. ("LCC"), completed the initial closing
of the sale of its telecommunication tower portfolio (the "Initial Closing") to
Pinnacle Towers Inc. ("Pinnacle") pursuant to an Asset Purchase Agreement,
dated February 24, 2000, between Pinnacle and Microcell (the "Asset Purchase
Agreement").

         In connection with the sale of Microcell's telecommunication tower
portfolio, on February 15, 2000, Microcell and LCC entered into a Settlement
and Release Agreement (the "Settlement Agreement") with the minority
shareholders of Microcell. Pursuant to the Settlement Agreement, the 16.25%
minority shareholder interest was redeemed for approximately $4.2 million.
Pursuant to the Settlement Agreement, the pending litigation involving LCC,
Microcell and the minority shareholders was settled and dismissed with
prejudice. As a result of the redemption, Microcell is a wholly owned
subsidiary of LCC.

         Pursuant to the Asset Purchase Agreement, Microcell agreed to sell up
to 197 telecommunication tower sites owned (171 sites) or to be constructed (26
sites) by Microcell for a total purchase price of $80 million in cash (the
"Purchase Price"), payable when the sites are conveyed to Pinnacle. The
Purchase Price was determined by negotiation between Microcell and Pinnacle. In
addition, Pinnacle will assume the obligations of Microcell under existing
ground leases and tower leases relating to each tower site beginning on the
closing of the conveyance of such site to Pinnacle.

         At the Initial Closing, 134 tower sites were conveyed to Pinnacle in
consideration of gross proceeds of $56.7 million. The remaining tower sites
will be conveyed to Pinnacle upon satisfaction of applicable conditions set
forth in the Asset Purchase Agreement, including title and survey requirements
and, in the case of the 26 towers under construction, completion of
construction in accordance with required specifications. In the event that the
conditions for closing of the conveyance of a remaining site other than a
construction site are not satisfied by June 2, 2000, Microcell or Pinnacle may
elect, on before June 7, 2000, to exclude such site from the sale and the
Purchase Price will be reduced. In the case of construction sites, the closing
deadline is December 31, 2000, subject to extension for up to an additional 60
days if Microcell is unable to complete construction by December 31, 2000 due
to circumstances beyond its reasonable control.

         LCC used approximately $14.4 million of the proceeds from the Initial
Closing to repay LCC's outstanding obligations under its credit facility. The
credit facility was terminated and all of the lender's liens and security
interests in LCC's assets were released. In addition, approximately $4.0
million was applied to or reserved for transaction costs, $4.2 million was
applied to redeem the minority

                                      -2-

<PAGE>   3

shares under the Settlement Agreement as described above and the balance of
$34.1 held for current operating activities.

         As part of the sale transaction, Microcell and Pinnacle entered into a
Master Antenna Site Lease, dated February 24, 2000 (the "Lease"), pursuant to
which Microcell has agreed to lease, until December 31, 2002, the unoccupied
space on each telecommunication tower sold to Pinnacle under the Asset Purchase
Agreement. Assuming that all of the 197 tower sites covered by the Asset
Purchase Agreement are sold to Pinnacle, the aggregate rent payable by
Microcell under the Lease will be approximately $.3 million, $2.0 million and
$4.3 million for calendar years 2000, 2001 and 2002, respectively. Microcell
has the right to sublease the space to third parties with Pinnacle's consent,
which cannot be unreasonably withheld, conditioned or delayed provided that
certain conditions regarding the terms of the sublease and characteristics of
the proposed subtenant are met. Microcell intends to sublease such unoccupied
space to third parties, but there can be no assurance that it will be able to
do so for all or any portion of the Lease term and there can be no assurance
that the rent received under the subleases will be sufficient to cover
Microcell's rent obligations under the Lease.

          Microcell and Pinnacle have also entered into a Tower Services
Agreement, dated February 24, 2000, which became effective on the Initial
Closing Date (the "Services Agreement"), pursuant to which Microcell will
provide Pinnacle with audit, maintenance and program management services for
site improvements and capacity upgrades for an initial 204 tower sites and
those additional sites which Pinnacle shall engage Microcell from time to time
to provide services. The initial term of the Services Agreement is five years;
it renews automatically for successive one-year terms unless terminated by
either party upon 30 days prior notice. The Services Agreement provides for
minimum annual payments to Microcell of $10 million for project management and
audit services; it also provides for approximately $1 million per year for
maintenance services based on the current number of sites as to which Microcell
has been engaged. On an annual basis, either party may request a renegotiation
of the pricing and scope of services. Either party may terminate the Services
Agreement under certain circumstances if the parties do not reach agreement
with respect to the matters under renegotiation.

         The foregoing description of the Asset Purchase Agreement and the
Lease does not purport to be complete and is qualified in its entirety by the
terms and conditions thereof, copies of which have been filed as exhibits
hereto.

                                      -3-

<PAGE>   4




ITEM 7   FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS

         (b)      Pro Forma Financial Information

         Included herewith are the following unaudited pro forma financial
         information for the registrant:

         (c)      Exhibits

2.1*     Asset Purchase Agreement, dated February 24, 2000, between Pinnacle
         Towers Inc. and Microcell Management, Inc.

2.2*     Amendment No. 1 to Asset Purchase Agreement, dated March 2, 2000,
         between Pinnacle Towers Inc. and Microcell Management, Inc.

2.3      Master Antenna Site Lease, dated February 24, 2000, between Pinnacle
         Towers Inc. and Microcell Management, Inc.

99.1     Press Release, dated February 25, 2000, regarding the execution of the
         Asset Purchase Agreement

99.2     Press Release, dated March 6, 2000, regarding the initial closing
         under the Asset Purchase Agreement
- ------------------
*        Portions omitted pursuant to a request for confidential treatment.


                                      -4-

<PAGE>   5


                        UNAUDITED PRO FORMA CONSOLIDATED
                              FINANCIAL STATEMENTS

The following unaudited pro forma consolidated balance sheets and statements of
operations give effect to the sale by Microcell Management, Inc. ("Microcell"),
a subsidiary of LCC International, Inc. (the "Company"), of substantially all
of the assets of Microcell, which consist of up to 197 telecommunication
towers, along with the ground leases and tower leases relating to each tower
site, to Pinnacle Towers Inc., a Delaware corporation ("Pinnacle"), and the
assumption by Pinnacle of certain obligations of Microcell under existing
ground leases and tower leases. The initial closing of the sale was consummated
on March 3, 2000.

The unaudited pro forma consolidated balance sheets have been prepared as if
the sale was consummated as of September 30,1999. The unaudited consolidated
statements of operations for the nine months ended September 30, 1999 and the
twelve months ended December 31, 1998 have been prepared as if the sale was
consummated at the beginning of the year.

The pro forma consolidated balance sheets are presented for informational
purposes only and do not purport to represent what LCC International, Inc. and
Subsidiaries' consolidated financial position would have been had the sale in
fact occurred on the date assumed nor do they represent a forecast of the
consolidated financial position or results of operations for any future period.
The pro forma consolidated financial statements should be read in conjunction
with the historical financial statements and accompanying notes of the Company
contained in the Company's Annual Report on Form 10-K dated March 30, 1999.

                                      -5-

<PAGE>   6
                    LCC INTERNATIONAL, INC. AND SUBSIDIARIES
                          CONSOLIDATED BALANCE SHEETS
                                 (IN THOUSANDS)

<TABLE>
<CAPTION>
                                                    December 31,    September 30,                      September 30,
                                                         1998            1999       Adjustments             1999
                                                    -------------   -------------   ------------       -------------
                                                                     (Unaudited)    (Unaudited)          (Unaudited,
                                                                                                         Pro-forma)
                                                                                                         (See notes)
<S>                                                 <C>             <C>             <C>                <C>
ASSETS:
Current Assets:
   Cash and cash equivalents....................... $       4,240   $       3,047   $     62,101        $     65,148
   Short term investments..........................           113             113                                113
   Receivables, net of allowance for doubtful
    accounts of $10,453, and $8,043 at December 31,
    1998 and September 30, 1999, respectively:.....
     Trade accounts receivable.....................        13,028          13,521                             13,521
     Due from related parties and affiliates.......           611           1,205                              1,205
     Unbilled receivables..........................         6,078           4,263                              4,263
   Deferred income taxes, net......................        12,050          10,286         (4,250) (3)          6,036
   Prepaid expenses and other current assets.......         3,072           2,957            (32)              2,925
   Net assets of discontinued operations...........         9,139          11,165                             11,165
                                                    -------------   -------------                       ------------
     Total current assets..........................        48,331          46,557                            104,376
Property and equipment, net........................        22,132          36,250        (29,912)              6,338
Deferred income taxes, net.........................        12,705           8,286         (1,692) (3)          6,594
Other assets.......................................         1,036           2,176           (370)              1,806
                                                    -------------   -------------                       ------------
                                                    $      84,204   $      93,269                       $    119,114
                                                    =============   =============                       ============
LIABILITIES AND SHAREHOLDERS' EQUITY:
Current Liabilities:
   Line of Credit.................................. $          --   $      13,577                       $     13,577
   Accounts payable................................         4,637           3,391                              3,391
   Note payable....................................            --           1,100                              1,100
   Accrued expenses................................         8,153          11,337            600              11,937
   Accrued employee compensation and benefits......         9,702           9,804                              9,804
   Deferred revenue................................           277           6,736          6,397  (4)         13,133
   Income taxes payable............................         7,894           6,895          4,973  (3)         11,868
   Obligations under incentive plans...............            55              --                                 --
   Other current liabilities.......................         3,142           2,816                              2,816
                                                    -------------   -------------                       ------------
     Total current liabilities.....................        33,860          55,656                             67,626
Convertible subordinated debt......................        50,000              --                                 --
Other liabilities..................................           115             656            (93)                563
                                                    -------------   -------------                       ------------
     Total liabilities.............................        83,975          56,312                             68,189
                                                    -------------   -------------                       ------------
Preferred Stock:
   10,000 shares authorized; -0- shares issued and
     outstanding...................................            --              --                                 --
Class A common stock; $0.01 par value:
   70,000 shares authorized; 7,180 shares and
     11,012 shares issued and outstanding at
     December 31, 1998 and September 30, 1999......            72             110                                110
Class B common stock; $0.01 par value:
   20,000 shares authorized; 8,461 shares issued
     and outstanding at December 31, 1998 and
     September 30, 1999............................            85              85                                 85
Paid-in capital....................................        37,130          80,291         (4,224) (2)         76,067
Accumulated deficit................................       (33,590)        (39,809)        18,192  (1)        (21,617)
Note receivable from shareholder...................        (2,100)         (2,100)                            (2,100)
                                                    -------------   -------------                       ------------
   Subtotal........................................         1,597          38,577                             52,545
Accumulated other comprehensive loss - foreign
   currency translation adjustments................        (1,368)         (1,620)                            (1,620)
                                                    -------------   -------------                       ------------
   Total Shareholders' equity......................           229          36,957                             50,925
                                                    -------------   -------------                       ------------
                                                    $      84,204   $      93,269                       $    119,114
                                                    =============   =============                       ============
</TABLE>

<PAGE>   7


                    LCC INTERNATIONAL, INC. AND SUBSIDIARIES
                     CONSOLIDATED STATEMENTS OF OPERATIONS
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                      Nine Months Ended                       Nine Months Ended
                                                        September 30,                             September 30,
                                                            1999          Adjustments                 1999
                                                     ------------------- -------------       -------------------
                                                          (Unaudited)     (Unaudited)              (Unaudited,
                                                                                                   Pro-forma)
                                                                                                   (See notes)
<S>                                                 <C>                  <C>                  <C>
REVENUES:
   Services......................................   $            50,561                       $           50,561
   Tower ownership and management................                 1,485  $     (1,485)   (5)                  --
                                                    -------------------                       ------------------
                                                                 52,046                                   50,561
                                                    -------------------                       ------------------
COST OF REVENUES:
   Services......................................                37,218                                   37,218
   Tower ownership and management................                   801          (801)   (5)                  --
                                                    -------------------                       ------------------
                                                                 38,019                                   37,218
                                                    -------------------                       ------------------
GROSS PROFIT.....................................                14,027                                   13,343
                                                    -------------------                       ------------------
OPERATING EXPENSES:
   Sales and marketing...........................                 4,058                                    4,058
   General and administrative....................                13,557                                   13,557
   Non-cash compensation.........................                   (12)                                     (12)
   Depreciation and amortization.................                 2,329          (852)   (5)               1,477
                                                    -------------------                       ------------------
                                                                 19,932                                   19,080
                                                    -------------------                       ------------------
OPERATING LOSS...................................                (5,905)                                  (5,737)
                                                    -------------------                       ------------------
OTHER INCOME (EXPENSE):
   Interest income...............................                   427                                      427
   Interest expense..............................                (2,023)        1,229    (5)                (794)
   Other income (expense)........................                (1,398)       29,120    (1)              27,722
                                                    -------------------                       ------------------
                                                                 (2,994)                                  27,355
                                                    -------------------                       ------------------
INCOME (LOSS) BEFORE INCOME TAXES................                (8,899)                                  21,618
                                                    -------------------                       ------------------
PROVISION (BENEFIT) FOR INCOME TAXES.............                (2,680)       11,444                      8,764
                                                    -------------------                       ------------------
NET INCOME (LOSS)................................   $            (6,219)                      $           12,854
                                                    ===================                       ==================

NET INCOME (LOSS) PER SHARE:
   Basic.........................................   $             (0.38)                      $             0.78
                                                    ====================                      ==================
   Diluted.......................................   $             (0.38)                      $             0.77
                                                    ====================                      ==================
WEIGHTED AVERAGE SHARES USED IN
   THE CALCULATION OF NET INCOME (LOSS)
   PER SHARE:
   Basic.........................................                16,487                                   16,487
                                                    ===================                       ==================
   Diluted.......................................                16,487                                   16,788
                                                    ===================                       ==================
</TABLE>

<PAGE>   8

                    LCC INTERNATIONAL, INC. AND SUBSIDIARIES
                     CONSOLIDATED STATEMENTS OF OPERATIONS
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                      Twelve Months Ended                               Twelve Months Ended
                                                         December 31,                                      December 31,
                                                             1998               Adjustments                    1998
                                                     ---------------------     -------------           ---------------------
                                                                                 (Unaudited)                 (Unaudited,
                                                                                                             Pro-forma)
                                                                                                             (See notes)
<S>                                                 <C>                    <C>                        <C>
REVENUES:
   Services......................................   $             86,328                              $             86,328
   Tower ownership and management................                    860   $              (860) (5)                     --
                                                    --------------------                              --------------------
                                                                  87,188                                            86,328
                                                    --------------------                              --------------------
COST OF REVENUES:
   Services......................................                 66,238                                            66,238
   Tower ownership and management................                    521                  (521) (5)                     --
                                                    --------------------                              --------------------
                                                                  66,759                                            66,238
                                                    --------------------                              --------------------
GROSS PROFIT.....................................                 20,429                                            20,090
                                                    --------------------                              --------------------
OPERATING EXPENSES:
   Sales and marketing...........................                  3,843                    (5) (5)                  3,838
   General and administrative....................                 22,063                                            22,063
   Restructuring charge..........................                  1,256                                             1,256
   Non-cash compensation.........................                    362                                               362
   Depreciation and amortization.................                  2,409                  (452) (5)                  1,957
                                                    --------------------                              --------------------
                                                                  29,933                                            29,476
                                                    --------------------                              --------------------
OPERATING LOSS...................................                 (9,504)                                           (9,386)
                                                    ---------------------                             --------------------
OTHER INCOME (EXPENSE):
   Interest income...............................                    898                                               898
   Interest expense..............................                 (2,295)                1,016  (5)                 (1,279)
   Other income (expense)........................                   (618)                    4  (5)                   (614)
                                                    --------------------                              --------------------
                                                                  (2,015)                                             (995)
                                                    --------------------                              --------------------
LOSS FROM CONTINUING OPERATIONS BEFORE
 INCOME TAXES....................................                (11,519)                                          (10,381)
                                                    --------------------                              --------------------
BENEFIT FOR INCOME TAXES.........................                 (4,561)                  426                      (4,135)
                                                    --------------------                              --------------------
LOSS FROM CONTINUING OPERATIONS..................                 (6,958)                                           (6,246)
LOSS FROM DISCONTINUED OPERATIONS
   NET OF TAX BENEFITS                                           (17,785)                                          (17,785)
                                                    --------------------                              --------------------
NET LOSS.........................................   $            (24,743)                             $            (24,031)
                                                    ====================                              ====================

NET LOSS PER SHARE:
CONTINUING OPERATIONS
   Basic.........................................   $              (0.45)                             $              (0.40)
                                                    ====================                              ====================
   Diluted.......................................   $              (0.45)                             $              (0.40)
                                                    ====================                              ====================
DISCONTINUED OPERATIONS
   Basic.........................................   $              (1.15)                             $              (1.15)
                                                    ====================                              ====================
   Diluted.......................................   $              (1.15)                             $              (1.15)
                                                    ====================                              ====================
NET LOSS PER SHARE
   Basic.........................................   $              (1.60)                             $              (1.55)
                                                    ====================                              ====================
   Diluted.......................................   $              (1.60)                             $              (1.55)
                                                    ====================                              ====================
WEIGHTED AVERAGE SHARES USED IN
   THE CALCULATION OF NET LOSS
   PER SHARE:
   Basic.........................................                 15,509                                            15,509
                                                    ====================                              ====================
   Diluted.......................................                 15,509                                            15,509
                                                    ====================                              ====================
</TABLE>

<PAGE>   9

                    LCC INTERNATIONAL, INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Note (1):

The Company anticipates earning net income of $18.2 million from the sale of
197 telecommunication tower sites owned (171 sites) or to be constructed (26
sites) by Microcell for a total purchase price of $80 million. The sales price
of $80 million was increased by prorated transaction costs and reduced by lease
commitments in the Master Antenna Site Lease resulting in an adjusted sales
price of $73.4 million.

Pre-tax earnings of $29.1 million are anticipated to result from the sale of
the tower portfolio. Anticipated costs included in the pre-tax earnings include
the costs of the disposed assets totaling $39.1 million and approximately $5.2
million of transaction and support costs. The anticipated cost of the disposed
assets includes an estimate of $8.9 million to complete the remaining 26 sites,
based upon the historical cost of constructing the existing towers.

The pre-tax earnings are adjusted by a tax provision of $10.9 million, using an
effective rate of 37.5%.

Note (2):

The increase in paid-in capital represents the redemption of Microcell minority
shareholders' interests pursuant to the settlement agreement dated February 15,
2000.

Note (3):

The tax obligation from selling the tower portfolio is anticipated to utilize
approximately $5.9 million of deferred tax assets associated with net operating
loss carryforwards and result in a current tax liability of $5.0 million.

Note (4):

The deferred revenue consists primarily of guaranteed minimum lease rentals
associated with the Master Antenna Site Lease entered into as a part of the
sale transaction.

Note (5):

Rental revenue and direct cost associated with the sold Microcell
telecommunication tower portfolio.



<PAGE>   10


                                   SIGNATURE

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                            LCC INTERNATIONAL, INC.

Date:  March 20, 2000                       By  /s/ David N. Walker
                                                ----------------------
                                                David N. Walker
                                                Senior Vice President, Treasurer
                                                and Chief Financial Officer

                                      -6-

<PAGE>   11


                                 EXHIBIT INDEX

Exhibit                       Description                                   Page
- -------                       -----------                                   ----
2.1*     Asset Purchase Agreement, dated February 24, 2000, between
         Pinnacle Towers Inc. and Microcell Management, Inc.

2.2*     Amendment No. 1 to Asset Purchase Agreement, dated March 2, 2000,
         between Pinnacle Towers Inc. and Microcell Management, Inc.

2.3      Master Antenna Site Lease, dated February 24, 2000, between
         Pinnacle Towers Inc. and Microcell Management, Inc.

99.1     Press Release, dated February 25, 2000, regarding the execution of
         the Asset Purchase Agreement

99.2     Press Release, dated March 6, 2000, regarding the initial closing
         under the Asset Purchase Agreement
- -----------------
*   Portions omitted pursuant to a request for confidential treatment.


                                      -7-




<PAGE>   1
                                                                     EXHIBIT 2.1

                            ASSET PURCHASE AGREEMENT

                                     BETWEEN

                              PINNACLE TOWERS INC.

                                       AND

                           MICROCELL MANAGEMENT, INC.




                                FEBRUARY 24, 2000


<PAGE>   2



                            ASSET PURCHASE AGREEMENT

           This Asset Purchase Agreement (the "Agreement"), dated as of February
24, 2000, is by and between Pinnacle Towers Inc., a Delaware corporation
("Purchaser"), and Microcell Management, Inc., a Delaware corporation
("Seller").

                                    RECITALS

           Seller owns and operates certain telecommunication towers and related
assets as more particularly described in this Agreement. Seller desires to sell,
and Purchaser desires to purchase, such assets.

                                      TERMS

           NOW, THEREFORE, in consideration of the mutual representations,
warranties, and covenants herein contained, and on the terms and subject to the
conditions herein set forth, the parties to this Agreement agree as follows:

                                    ARTICLE I
                                   DEFINITIONS

           1.1      Defined Terms. The following terms shall, for the purpose of
this Agreement, have the meanings specified in this Section 1.1.

                    (a)       "Affiliate" has the meaning set forth in Rule
12b-2 of the Securities and Exchange Act of 1934 regulations.

                    (b)       Intentionally Omitted.

                    (c)       Intentionally Omitted.

                    (d)       "Allocated Purchase Price" means, (i) for each
Tower Site other than a Construction Site, the amount of the Purchase Price
allocated to such Tower Site as set forth in Schedule 2.4(a) attached hereto,
and (ii) for each Construction Site, the amount of the Purchase Price allocated
to such Construction Site as set forth in Schedule 2.4(a) attached hereto.

                    (e)       "Applicable Laws" means any law, rule, regulation,
order, judgment, or determination of any governmental authority applicable to
the Purchased Assets, including without limitation the rules and regulations of
the Federal Aviation Administration and the Federal Communications Commission.

                    (f)       "Arbitrator" shall have the meaning given such
term in Section 2.4(b) hereof.

                    (g)       "Assumed Commitments" shall mean the Ground
Leases, the Tower Leases, and the Commitments listed on Schedule 3.5(b) attached
hereto.


<PAGE>   3


                    (h)       "Assumed Obligations" means all obligations
accruing under the Assumed Commitments on or after the Closing Date.
Notwithstanding any provision to the contrary contained herein, the Assumed
Obligations shall not include (i) Seller's Closing Date Prorations; (ii) any
obligations accruing under the Assumed Commitments prior to the Closing Date; or
(iii) any obligation or liability for Taxes relating to the period prior to the
applicable Closing Date.

                    (i)       "Closing" means the Initial Closing or a
Subsequent Closing, as the context may dictate.

                    (j)       "Closing Date" means the Initial Closing Date or a
Subsequent Closing Date, as the context may dictate. Without limiting the
foregoing, a reference herein to "the Closing Date" of a particular Purchased
Asset shall mean the Closing Date as of which such asset was conveyed to
Purchaser hereunder.

                    (k)       "Closing Date Prorations" shall have the meaning
given such term in Section 2.4(b) hereof.

                    (l)       "Code" means the Internal Revenue Code of 1986, as
amended.

                    (m)       "Commitments" means any (i) partnership or joint
venture agreement; (ii) mortgage, deed of trust, or other security agreement;
(iii) guaranty, suretyship, indemnification, or contribution agreement or
performance bond; (iv) debt instrument, loan agreement, letter of credit
arrangement, or other obligation relating to indebtedness for borrowed money or
money lent to another; (v) deed or other document evidencing an interest in or
contract to purchase or sell real or personal property; (vi) agreement with
dealers or sales or commission agents, public relations or advertising agencies,
accountants, or attorneys; (vii) franchise, dealership, distributorship,
marketing, sales, agency, or other similar agreement; (viii) lease of real or
personal property, whether as lessor, lessee, sublessor, or sublessee; (ix)
agreement relating to any matter or transaction in which an interest is held by
a Person that is an Affiliate of Seller; (x) any agreement for the acquisition
of services, supplies, equipment or other personal property; (xi) powers of
attorney; (xii) contract containing a noncompetition covenant; (xiii) any other
contract or arrangement that involves either an unperformed commitment in excess
of $500 or that terminates more than one year from the date hereof; or (xiv) any
other agreement or commitment not made in the ordinary course of business or
that is material to the Purchased Assets.

                    (n)       "Consent" means any authorization, consent,
approval, permit, or license of, or filing with, any governmental or public body
or authority, any lender, lessor or lessee, any franchiser, or any other Person.

                    (o)       "Construction Sites" means, collectively, the
Towers for which construction will not have been completed as of the Initial
Closing Date, which Towers are identified on Schedule 2.4(e) (each, a
"Construction Site").

                    (p)       "Conveyance Documents" shall have the meaning
given such term in Section 2.8 hereof.



                                       2
<PAGE>   4


                    (q)       "Damages" means losses, claims, obligations,
demands, assessments, penalties, liabilities, costs, damages, interest, and
expenses (including reasonable disbursements and attorneys' fees).

                    (r)       "Deficiency Notice" shall have the meaning given
such term in Section 6.11 hereof.

                    (s)       "Discovered Violation" shall have the meaning
given such term in Section 6.10 hereof.

                    (t)       "Employee Benefits" means any employee benefit,
including without limitation, any pension, profit-sharing, or other retirement
plan, deferred compensation plan, bonus plan, severance plan, fringe benefit
plan, health, group insurance, or other welfare benefit plan or other similar
plan, agreement, policy, or understanding, including any "employee benefit plan"
within the meaning of Section 3(3) of the Employee Retirement Income Security
Act of 1974, as amended.

                    (u)       "Encumbrances" means any mortgages, pledges,
liens, security interests, conditional and installment sale agreements, activity
and use limitations, conservation easements, deed restrictions or restrictive
covenants (recorded or otherwise), encumbrances and charges of any kind.

                    (v)       "Environmental Arbitrator" shall have the meaning
given such term in Section 6.10 hereof.

                    (w)       "Environmental Laws" means all federal, state, and
local laws, statutes, ordinances, rules, regulations, orders and requirements of
common law concerning protection of the environment or human health in effect as
of the date hereof or the applicable Closing Date, as the context may dictate,
including without limitation, laws identified as or similar to the Comprehensive
Environmental Response, Compensation, and Liability Act of 1980, as amended (42
U.S.C. Section 9601, et seq.), the Hazardous Materials Transportation Act as
amended (49 U.S.C. Section 1801, et seq.), the Resource Conservation and
Recovery Act of 1976, as amended (42 U.S.C. Section 6901, et seq.), and the
regulations adopted or publications promulgated pursuant thereto.

                    (x)       "ERISA" means the Employee Retirement Income
Security Act of 1974, as amended.

                    (y)       "Excluded Assets" shall have the meaning set forth
in Section 2.3 hereof.

                    (z)       "Future Construction Site Ground Leases" shall
mean ground leases for the Construction Sites listed on Schedule 2.4(e) attached
hereto, which ground leases have not been executed as of the date hereof and
shall be entered into and executed in accordance with the terms of this
Agreement.

                    (aa)      "Ground Lease Assignment and Assumption Agreement"
means an assignment and assumption agreement in the form attached hereto as
Exhibit A pursuant to



                                       3
<PAGE>   5


which Seller assigns the Ground Leases to Purchaser, and Purchaser assumes the
Assumed Obligations under such Ground Leases.

                    (bb)      "Ground Leases" shall mean, collectively, the
ground leases used or held by Seller in connection with the Towers listed on
Schedule 2.2(b) and the Future Construction Site Ground Leases (each, a "Ground
Lease").

                    (cc)      "Hazardous Materials" means any toxic substance as
defined in 15 U.S.C. Sections 2601 et seq. on the date hereof, including
materials designated on the date hereof as hazardous substances under 42 U.S.C.
Sections 9601 et seq. or other Applicable Laws, and toxic, radioactive, caustic,
or otherwise hazardous substances, including petroleum and its derivatives,
asbestos, PCBs, formaldehyde, chlordane and heptachlor.

                    (dd)      "Income Tax" means any federal, state, local or
foreign income tax, including any interest, penalty or addition thereto, whether
disputed or not.

                    (ee)      "Initial Closing" shall mean the first closing
occurring hereunder, at which closing Seller shall convey to Purchaser the
Initial Purchased Assets.

                    (ff)      "Initial Closing Date" shall be the first to occur
of (i) March 3, 2000 or (ii) the first date as of the conditions set forth in
Articles 7A, 7C and 8A hereof have been satisfied for no less than the Threshold
Number of Tower Sites.

                    (gg)      "Initial Purchased Assets" means the Purchased
Assets other than the Non-Conforming Sites and the Construction Sites, provided,
however, that the Initial Purchased Assets shall consist of no less than the
Threshold Number of Tower Sites.

                    (hh)      "Intellectual Property" means all patents,
trademarks, copyrights, trade names, service marks, and other trade
designations, including common law rights, registrations, applications for
registration, technology, know-how or process.

                    (ii)      "LCC" means LCC International, Inc., a Delaware
corporation and Seller's parent.

                    (jj)      "Non-Conforming Site" and "Non-Conforming Sites"
shall mean, individually and collectively as the context may dictate, any and
all Tower Sites (other than the Construction Sites) not satisfying the
conditions set forth in Section 7C as of the Initial Closing Date.

                    (kk)      "Non-Surviving Representations" shall have the
meaning given such term in Section 9.6(b) hereof.

                    (ll)      "Outside Closing Date" shall mean May 31, 2000
(as the same may be amended from time to time by mutual agreement of the
parties).

                    (mm)      "Permitted Encumbrances" means, as to any Tower
Site: (i) the Ground Lease relating to such Tower Site; (ii) the Tower Leases
relating to such Tower Site; (iii) statutory liens for Taxes or other
governmental charges or assessments not yet due or delinquent



                                       4
<PAGE>   6


or the validity of which is being contested in good faith; (iv) zoning,
entitlement, conservation and other land use restrictions which do not
materially interfere with the present use of such Tower Site, (v) other
Encumbrances which (A) do not materially interfere with the present use of such
Tower Site; and (B) do not secure an indebtedness of Seller; (vi) Encumbrances
securing an indebtedness of Seller that will be released to Purchaser's
satisfaction following application of purchase proceeds at the Closing of such
Tower Site; (viii) standard printed exceptions which do not materially interfere
with the present use of such Tower Site; and (ix) such other Encumbrances as
Purchaser may accept in Purchaser's sole and absolute discretion.

                    (nn)      "Person" means any natural person, firm
partnership, association, corporation, company, trust, business trust,
governmental authority or other entity.

                    (oo)      "Phase I Reports" means, collectively, the Phase I
Environmental Reports identified on Schedule 1.1(oo) hereto, a copy of each of
which has heretofore been provided to Purchaser (each, a "Phase I Report").

                    (pp)      "Pre-Paid Expenses" shall mean any and all
expenses relating to the Purchased Assets which relate to a period after the
Closing Date and have been pre-paid by Seller prior to the Closing Date, any
amounts of which are in excess of $500.00 shall have been disclosed to Purchaser
prior to the Initial Closing.

                    (qq)      Intentionally Omitted

                    (rr)      "Purchase Price" shall mean Eighty Million and
00/100 US Dollars (US $80,000,000.00), subject to adjustment as set forth in
Section 2.4 hereof.

                    (ss)      "Purchased Assets" shall have the meaning set
forth in Section 2.2 hereof.

                    (tt)      "Purchaser's Closing Date Prorations" shall have
the meaning given such term in Section 2.4(b) hereof.

                    (uu)      "Real Property" means the land that is subject to
the Ground Leases, legal descriptions for which are set forth on the schedules,
exhibits or attachments to such Ground Leases.

                    (vv)      "Real Property Tax Returns" means any return,
declaration, report, claim for refund, or information return or statement
relating to Real Property Taxes, including any schedule or attachment hereto,
and including any amendment thereof.

                    (ww)      "Real Property Taxes" shall mean (i) all real
estate taxes, including general and special assessments, if any, which are
imposed upon Seller by reason of Seller's ownership of the Purchased Assets or
assessed against any Tower Site or component for which Seller is responsible
under the terms of the respective Ground Lease, Tower Lease or otherwise, and
(ii) any other present or future Taxes or governmental charges that are imposed
upon Seller by reason of Seller's ownership of the Purchased Assets or assessed
against any Tower Site or component for which Seller is responsible under the
terms of the respective Ground Lease, Tower Lease or otherwise, which are in the
nature of, in addition to or in substitution for real estate taxes, including,
without limitation, any license fees, sales tax or other tax measured by or



                                       5
<PAGE>   7


imposed upon rents, or other tax or charge upon Seller's business of leasing
space on the Towers, but shall not include any Income Taxes.

                    (xx)      "Related Improvements" means any and all
buildings, improvements, fixtures and fittings located or to be located on the
Real Property other than the Towers.

                    (yy)      Intentionally Omitted.

                    (zz)      "Seller's Closing Date Prorations" shall have the
meaning given such term in Section 2.4(b) hereof.

                    (aaa)     "SNDA" means, as to any Tower Site encumbered by a
fee mortgage, a Subordination and Non-Disturbance Agreement in substantially the
form of the attached Exhibit B (or otherwise in form satisfactory to Purchaser
in Purchaser's reasonable discretion) made by the beneficiary of such mortgage
for the benefit of Purchaser as the ground lessee of the Ground Lease related
thereto (including, without limitation, by reason of Purchaser being a ground
lessee assignee recognized as such under the terms of such agreement (such as
the terms set forth in Section 10 of the form of agreement attached hereto)).

                    (bbb)     "SNDA Threshold" means, at any time, a number of
Subject Tower Sites equal to 20% of the aggregate number of Tower Sites
(including Subject Tower Sites) having then been conveyed to Purchaser
hereunder.

                    (ccc)     "Subject Tower Site" and "Subject Tower Sites"
means, individually and collectively, as the context may dictate, a Tower Site
encumbered by a fee mortgage superior to such site's Ground Lease but for which
no SNDA is in place.

                    (ddd)     "Subsequent Closing" shall mean a closing
occurring after the Initial Closing at which one or more of the Construction
Sites and/or Non-Conforming Sites are conveyed by Seller to Purchaser hereunder
following such Tower Sites' satisfying the requirements for conveyance set forth
herein.

                    (eee)     "Subsequent Closing Date" shall mean the date on
which a Subsequent Closing occurs.

                    (fff)     "Subsequent Violations" shall have the meaning
given such term in Section 6.10 hereof.

                    (ggg)     "Survey" has the meaning set forth in Section 7C.2
hereof.

                    (hhh)     "Tax" (and, with correlative meaning, "Taxes" and
"Taxable") means any tax or items referred to in a statute as a tax of any kind
whatsoever, including Income Taxes and Real Property Taxes, federal, state,
local or foreign, franchise, sales, use, excise, gross receipts, license,
payroll, employment, severance, stamp, occupation, premium, windfall profits,
environmental (including taxes under Code Sec. 59A), customs duties, capital
stock, profits, withholding, social security (or similar), unemployment,
disability, real property, personal property, transfer, registration, value
added, alternative or add-on minimum, estimated, or other tax of any kind
whatsoever, together with any interest or any penalty, addition to tax, or




                                       6
<PAGE>   8


additional amount imposed by any governmental body (a "Taxing Authority")
responsible for the imposition of any such tax (domestic or foreign).

                    (iii)     "Tenant's Rights of First Refusal" means that
those certain rights of first refusal held by certain tenants under the Tower
Leases set forth on Schedule 3.10 attached hereto (each, a "Tenant's Right of
First Refusal").

                    (jjj)     "Tenant's Rights of First Refusal Indemnity" shall
have the meaning given such term in Section 9.6(b) hereof.

                    (kkk)     "Threshold Number of Tower Sites" shall mean one
hundred fifty (150) Tower Sites or such number of Tower Sites as the parties may
mutually agree to from time to time prior to the Initial Closing.

                    (lll)     "Title Charges" has the meaning set forth in
Section 2.4(d) hereof.

                    (mmm)     "Title Insurance" has the meaning set forth in
Section 7C.1 hereof.

                    (nnn)     "Tower Lease Assignment and Assumption Agreement"
means an assignment and assumption agreement in the form attached hereto as
Exhibit C pursuant to which Seller assigns the Tower Leases to Purchaser, and
Purchaser assumes the Assumed Obligations under such Tower Leases, and Purchaser
agrees that the Tower Leases will remain in effect after the applicable Closing
Date in accordance with their terms.

                    (ooo)     "Tower Leases" shall mean, collectively, the
leases and licenses held by Seller as landlord in connection with the Towers
listed on Schedule 2.2(c) (each, a "Tower Lease").

                    (ppp)     "Tower Site" (and, with correlative meaning,
"Tower Sites") shall mean the premises subject to a Ground Lease (and Seller's
leasehold interest therein), together with the Tower and Related Improvements
located thereupon and the Tower Leases (and Seller's interest therein) related
thereto.

                    (qqq)     "Towers" shall mean, collectively the
telecommunication towers listed on Schedule 2.2(a) (each, a "Tower").

                    (rrr)     "Tower Services Agreement" shall mean that certain
Tower Services Agreement by and between Purchaser and Seller dated of even date
herewith with an "Effective Date" (as such term is defined therein) of the
Initial Closing Date, pursuant to which Seller will provide certain tower
maintenance and other services for Purchaser's telecommunication tower
portfolio.

                    (sss)     "Tower Lease Agreement" shall mean that certain
Master Antenna Site Lease by and between Purchaser, as "Lessor" and Seller, as
"Lessee", dated of even date herewith with a lease commencement date as of the
Initial Closing Date, pursuant to which Seller will lease from Purchaser space
on Tower Sites following the conveyance thereof to Purchaser hereunder.


                                       7
<PAGE>   9


           1.2      Number and Gender. Whenever the context requires, references
in this Agreement to the singular number shall include the plural; the plural
number shall include the singular; and words denoting gender shall include the
masculine, feminine, and neuter.

                                   ARTICLE II
                                PURCHASE AND SALE

           2.1      Agreement to Convey Purchased Assets. On the terms and
subject to the conditions set forth herein, and in reliance on the
representations, warranties, covenants and agreements contained herein, Seller
shall sell, assign, transfer, convey and deliver to Purchaser, and Purchaser
shall purchase and accept from Seller, the Purchased Assets, free and clear of
all Encumbrances other than the Permitted Encumbrances.

           2.2      Purchased Assets. For purposes of this Agreement, "Purchased
Assets" shall mean all right, title, benefit and interest of Seller in and to:

                    (a)       the Towers;

                    (b)       the Ground Leases (which, in the case of the
Future Construction Site Ground Leases, shall mean Seller's interest therein as
of the applicable Closing Date);

                    (c)       the Tower Leases; and

                    (d)       the Related Improvements.

           2.3      Excluded Assets. Notwithstanding anything to the contrary
contained in this Agreement, any and all assets of Seller which are not
Purchased Assets (the "Excluded Assets") shall be retained by Seller, including,
but not limited to:

                    (a)       all bank accounts of Seller;

                    (b)       all Tax refunds relating to assets of Seller other
than the Purchased Assets or relating to the Purchased Assets but applicable to
Tax periods occurring prior to the date of conveyance of such assets to
Purchaser;

                    (c)       any and all capital stock, notes and all other
securities of, and all other interests of, Seller in any Person;

                    (d)       all insurance policies relating to the Towers and
any and all unearned premiums thereunder or other rights to refunds thereunder;

                    (e)       all Intellectual Property of Seller, including all
right, title and interest of Seller in and to the name "Microcell" and
"Microcell Management" and any trademark, service mark, trade name or corporate,
trade or fictitious name containing the word "Microcell"; and

                    (f)       any and all permits, approvals, orders,
authorizations, consents, licenses and franchises which have been issued or
granted to or are owned by Seller.



                                       8
<PAGE>   10


           2.4      Purchase Price.

                    (a)       Purchase Price.  Subject to adjustment as provided
in Section 2.4(b) and in such amounts at the Initial Closing and each Subsequent
Closing as set forth herein, Purchaser shall pay to Seller or as Seller directs
in writing, in consideration for Seller's conveyance of the Tower Sites being
conveyed at such Closing and in immediately available funds to such account or
accounts designated in writing by Seller, the portion of the Purchase Price
allocated to the Tower Sites being conveyed at such Closing as set forth in
Schedule 2.4(a).

                    (b)       Prorations. All normal and customarily proratable
items relating to the Purchased Assets, including, without limitation, Real
Property Taxes, personal property taxes, utility bills, alarm and security
bills, ground lease rent and tower lease rent (collectively, the "Closing Date
Prorations") shall be prorated as of such assets' respective Closing Date,
Seller being charged and credited for all of the same up to such date ("Seller's
Closing Date Prorations") and Purchaser being charged and credited for all of
the same on and after such date ("Purchaser's Closing Date Prorations"). All
earnest money deposits held by Seller under Tower Leases for which Purchaser
assumes liability under a Tower Lease Assignment and Assumption Agreement shall
be credited in favor of Purchaser against the Purchase Price. The Pre-Paid
Expenses shall be credited in favor of Seller against the Purchase Price in the
aggregate amount thereof.

                    Within ninety (90) days after each Closing Date, the Seller
will prepare and notify Purchaser of the Closing Date Prorations applicable to
such Closing Date. If Purchaser disagrees with Seller's calculation of Closing
Date Prorations, Purchaser will notify Seller within five (5) business days
after receipt of the calculation. If the parties cannot resolve a disagreement
as to such calculation within three (3) business days thereafter, they shall
promptly submit the disagreement to an arbitrator mutually selected by the
parties (the "Arbitrator"), whose decision with respect to such Closing Date
Prorations (which decision must be rendered within ten (10) business days after
submission) will be final and binding. Purchaser and Seller will each pay
one-half of the expenses of the Arbitrator.

                    (c)       Rental Income. All amounts received as rent or
other income by either party under a Tower Lease shall be prorated as of the
applicable Closing Date hereunder, with Seller being credited for rent or income
attributable to the period prior to such Closing Date, and Purchaser being
credited for rent or income attributable to the period on or after such Closing
Date. If amounts are received by either party that are owed to the other party
in accordance with the foregoing, the receiving party shall remit or direct the
recipient to remit such amounts promptly to the party to whom such amounts are
owed, provided that amounts received which were not specifically designated as
applicable to the period prior to such Closing Date shall first belong to
Purchaser as current rents due after such Closing Date and thereafter amounts
received shall be remitted to Seller in payment of delinquent rent accrued prior
to such Closing Date. If amounts which relate to the period after such Closing
Date are received by Seller after such Closing Date, Seller shall remit such
amounts promptly to Purchaser. Each party hereby expressly agrees to cooperate
with the other party, in connection with any future efforts by the other party
to collect rents and other income accruing or arising in favor of the party
seeking to collect such rents and income, at such party's expense.



                                       9
<PAGE>   11


                    (d)       Costs. Purchaser shall pay the entire costs of the
following: (i) Surveys; and (ii) Taxes arising in connection with any assignment
or other conveyance document relating to the Purchased Assets conveyances
contemplated hereby. Seller and Purchaser shall share equally the following (a)
charges for Title Insurance, including premiums, search and exam fees,
coordination fees and disbursements (the "Title Charges") up to a maximum sum of
$600,000.00 in total Title Charges; and (b) recording costs arising in
connection with the transactions contemplated hereby (other than any costs
attributable to Purchaser's recording a Bill of Sale). Purchaser shall be solely
responsible for all Title Charges in excess of $600,000.00. Purchaser shall be
solely responsible for all costs arising in connection with recording each Bill
of Sale.

                    (e)       Retention of Purchase Price at the Initial
Closing.

                              (i)     Construction Sites.  At the Initial
Closing, Purchaser shall retain and not disburse to Seller [           ] of the
Purchase Price, which amount is the aggregate Allocated Purchase Price for the
Construction Sites. In the event and on such Subsequent Closing Date as
Purchaser and Seller shall close on a Construction Site under the terms hereof,
Purchaser shall pay to Seller or as Seller directs in writing the Allocated
Purchase Price for such Construction Site, subject to adjustment as set forth in
this Section 2.4.

                    Notwithstanding anything to the contrary in this Agreement,
Purchaser shall not be required to purchase and Seller shall not be required to
sell any Construction Site that is completed other than in accordance with
Section 7E.

                              (ii)    Non-Conforming Sites. Purchaser shall
identify to Seller, by written notice delivered to Seller no later than February
29, 2000, each Non-Conforming Site and state the Section 7C conditions to
closing that such Non-Conforming Site has not met. In the event Seller fails to
take such action as may be necessary to cause an identified site to satisfy such
condition(s) on or before the Initial Closing Date to Purchaser's reasonable
satisfaction, then those Tower Sites so identified and for which such conditions
are not timely satisfied shall be deemed to be Non-Conforming Sites on the
Initial Closing Date. At the Initial Closing, Purchaser shall retain and not
disburse to Seller an amount equal to the aggregate Allocated Purchase Price for
the Non-Conforming Site(s). In the event and on such Subsequent Closing Date as
Purchaser and Seller shall close on a Non-Conforming Site under the terms
hereof, Purchaser shall pay to Seller the Allocated Purchase Price for such
Non-Conforming Site.

           2.5      Assumption of Certain Liabilities. As additional
consideration for the purchase of the Purchased Assets, Purchaser agrees,
subject to the exceptions stated below, to assume and to discharge the Assumed
Obligations.

           2.6      Liabilities Not Assumed. Purchaser specifically will not
assume or agree to pay or discharge any debts, liabilities, or obligations of
Seller other than the Assumed Obligations. Without limiting the generality of
the foregoing, Purchaser will not assume, agree to pay or discharge any of the
following debts, liabilities, and obligations of Seller: (a) employee benefit
obligations and income, sales, use, franchise, excise, transfer, ad valorem, or
other Taxes or duties, including Income Taxes that accrue or become payable as a
result of the sale of the Purchased Assets to Purchaser or the other
transactions contemplated by this Agreement except for Taxes which comprise a
portion of the Purchaser's Closing Date Prorations and Taxes



                                       10
<PAGE>   12


payable by Purchaser pursuant to Section 2.4(d) hereof; (b) any liability of
Seller for the unpaid Taxes of any Person under United States Treasury
Regulation Section 1.1502-6 (or any similar provision of state, local, or
foreign law), as a transferee or successor, by contract, or otherwise; (c) any
obligation of Seller to indemnify any Person (including, without limitation, any
of Seller's stockholders, directors, officers, owners, partners, or members) by
reason of the fact that such Person was a director, officer, employee, or agent
of Seller or was serving at the request of any such entity as a partner,
trustee, director, officer, employee, or agent of another entity (whether such
indemnification is for judgments, damages, penalties, fines, costs, amounts paid
in settlement, losses, expenses, or otherwise and whether such indemnification
is pursuant to any statute, charter document, bylaw, agreement, or otherwise);
(d) any liability of Seller for costs and expenses incurred in connection with
this Agreement and the transactions contemplated hereby, except as expressly
provided herein; (e) except as otherwise expressly provided herein or therein,
any liability or obligation of Seller under this Agreement or under any related
agreement hereinafter entered into by Seller and Purchaser; (f) any other
liability or obligation of Seller other than the Assumed Obligations; or (g) any
liability or obligation arising under any Ground Lease or Tower Lease relating
to any period on or before the applicable Closing Date.

           2.7      Closings.

                    Upon the terms and subject to the conditions to closing set
forth in this Agreement, closing hereunder shall occur at two or more closings
(such closings being referred to hereunder as the Initial Closing and the
Subsequent Closing(s)). The Initial Closing and each Subsequent Closing shall be
held at the offices of Hogan & Hartson L.L.P., 555 13th Street, N.W.,
Washington, D.C., at 10:00 a.m. Eastern time, or at such other place or time as
may be agreed upon by Seller and Purchaser, on dates to be specified by the
parties as set forth below.

                    (a)       Initial Closing.

                              (i)     The Initial Closing shall occur on the
Initial Closing Date.

                              (ii)    At the Initial Closing, Seller and
Purchaser shall date and deliver the Conveyance Documents for the Initial
Purchased Assets and Purchaser shall pay to Seller, in immediately available
United States funds to an account designated by Seller, the aggregate portion
Purchase Price allocated to the Initial Purchased Assets (as such purchase price
may be adjusted in accordance with Section 2.4(b) hereof).

                    (b)       Subsequent Closings.

                              (i)     The first Subsequent Closing shall occur
on the last day of the month in which the Initial Closing Date occurs (provided,
however, that if the Initial Closing Date occurs after the fifteenth (15th) day
of a month, then the first Subsequent Closing Date shall occur on the last day
of the succeeding month), and a Subsequent Closing shall occur on the last day
of each month occurring thereafter up to and including on December 31, 2000,
provided Seller shall be prepared to convey either (x) at least six (6) Tower
Sites upon such Subsequent Closing Date; or (y) if fewer than six, all remaining
Tower Sites.

                              (ii)    No later than the twentieth (20th) day of
a month in which a Subsequent Closing will occur, Seller shall provide, by
written notice to Purchaser, a schedule



                                       11
<PAGE>   13


identifying all Construction Sites and/or Non-Conforming Sites not- yet conveyed
to Purchaser hereunder, and shall identify the Non-Conforming Sites and/or
Construction Sites that, in Seller's good faith determination, will have
satisfied the requirements for conveyance set forth in Section 7B and 7D or 7E,
respectively, hereof on or before, and therefore be ready to be conveyed to
Purchaser on, the next occurring Subsequent Closing Date. Purchaser and Seller
will, in good faith, resolve any disputes as to the qualification of such
identified Tower Sites, and shall mutually initial a final schedule identifying
the Tower Sites that will be conveyed on such Subsequent Closing Date.

                              (iii)   At each Subsequent Closing, Seller and
Purchaser shall date and deliver Conveyance Documents for the Tower Sites then
being conveyed, and Purchaser shall pay to Seller, in immediately available
United States funds to an account designated by Seller, the aggregate portion of
the Purchase Price allocated to such Tower Sites (as such purchase price may be
adjusted in accordance with Section 2.4(b) hereof).

           2.8      Execution and Delivery of Closing Documents; Other
Documents. On or prior to the Initial Closing Date, at a date and time mutually
agreed to by the parties, each party shall cause to be prepared, and shall
execute, or cause to be executed by the appropriate third party, and deliver
into escrow as set forth below, each agreement and instrument required by this
Agreement to be so executed and delivered (collectively, the "Conveyance
Documents"). These documents shall include without limitation, a bill of sale
for each Tower, a Ground Lease Assignment and Assumption Agreement for each
Ground Lease (other than the Future Construction Site Ground Leases), a Tower
Lease Assignment and Assumption Agreements for each Tower Lease, a Memorandum of
Lease for any and each Ground Lease for which such an instrument is not properly
recorded as of the date hereof (other than the Future Construction Site Ground
Leases), and any and all UCC-3 financing statements required to terminate
existing UCC security interests in the Purchased Assets which are required
hereunder to be terminated. At such time, each party also shall also execute and
deliver into escrow, or cause to be executed and delivered into escrow, such
other appropriate and customary documents as the other party or its counsel
reasonably may request for the purpose of consummating the conveyance of the
Purchased Assets hereunder. The foregoing executed Conveyance Documents for each
Purchased Asset shall be delivered in escrow to, and held in escrow by, Hogan &
Hartson L.L.P. until such Purchased Asset is conveyed to Purchaser hereunder (if
ever), at which time, on such Purchased Asset's Closing Date, such documents
shall be released to the parties and dated and delivered by the parties, all in
accordance with the terms hereof.

                    At each Closing, in addition to the dating and delivery of
Conveyance Documents as set forth above, each party also shall execute and
deliver, or cause to be executed and delivered, such other appropriate and
customary documents as any other party or its counsel reasonably may request for
the purpose of consummating the conveyance of the assets then being conveyed
hereunder. At each Subsequent Closing at which a Construction Site related to a
Future Construction Site Ground Lease is conveyed, the parties shall also
execute and deliver such documents as may be required to properly assign and
assume the rights and obligations as lessee under, and record a memorandum of
the existence of, such Ground Lease. All actions taken at any Closing shall be
deemed to have been taken simultaneously at the time the last of any such
actions is taken or completed. In addition, at each Closing, Seller shall
deliver to Purchaser: (i) all keys, if any, to each parcel of Real Property,
each Tower and any and all



                                       12
<PAGE>   14


Related Improvements included in the conveyed assets; (ii) all security and
access codes, if any, applicable to each parcel of Real Property, each Tower and
any and all Related Improvements included in the conveyed assets; and (iii)
originals (if in Seller's possession) and/or copies of fully executed Ground
Leases and Tower Leases relating to the conveyed assets.

                                   ARTICLE III
                    REPRESENTATIONS AND WARRANTIES OF SELLER

           Seller represents and warrants to Purchaser that the statements
contained in this Article III (including without limitation all information set
forth on the Schedules) are correct and complete as of the date of this
Agreement and shall be correct and complete as of the Closing Date (as though
made then and as though the Closing Date were substituted for the date of this
Agreement throughout this Article III).

           3.1      Organization and Good Standing; Power and Authority;
Authorization and Validity. Seller is a corporation, duly organized, validly
existing, and in good standing under the laws of the State of Delaware, with all
requisite powers and authority to carry on the business in which it is engaged
and to own the properties it owns. Seller has full power and authority to
execute, deliver, and perform its obligations under this Agreement and all other
agreements and documents to which it is or will be a party in connection with
this Agreement and the transactions contemplated hereby. Seller's execution,
delivery, and performance of this Agreement and the other agreements
contemplated hereby to which Seller is or will be a party, and the consummation
of the transactions contemplated hereby and thereby, have been duly authorized
by Seller. This Agreement and each other agreement contemplated hereby to which
Seller is or will be a party have been or will be duly executed and delivered by
Seller and constitute or will constitute legal, valid, and binding obligations
of Seller, enforceable against it in accordance with their terms, except as may
be limited by applicable bankruptcy, insolvency or similar laws affecting
creditors' rights generally or the availability of equitable remedies.

           3.2      Financial Information. Schedule 3.2 sets forth accurate and
correct information concerning the financial information regarding the Purchased
Assets (excluding the Construction Sites and Purchased Assets for which
construction was not yet complete as of December 31, 1999) set forth therein for
the 12-month period ending December 31, 1999. Such information substantiates the
results of operations of the Purchased Assets for such 12-month period in all
material respects.

           3.3      Liabilities and Obligations. Except for the Assumed
Obligations, Purchaser's Closing Date Prorations, and the obligations of
Purchaser set forth in Section 2.4(d), there are no liabilities of Seller
relating to the Purchased Assets, accrued, contingent, or otherwise (known or
unknown and asserted or unasserted), for which Purchaser may become liable as a
result of the transactions contemplated by this Agreement or which might
encumber the Purchased Assets after the Closing.

           3.4      Absence of Certain Changes. Except as set forth in
Schedule 3.4, since December 31, 1999, there has occurred no adverse change,
damage or destruction to or loss of any



                                       13
<PAGE>   15


Purchased Assets (whether or not covered by insurance) that is reasonably likely
to materially and adversely affect the Purchased Assets.

           3.5      Ground Leases and Tower Leases.

                    (a)       There are no ground leases used or held by Seller
in connection with the Towers other than the Ground Leases;

                    (b)       Except for the Ground Leases and Tower Leases and
except as set forth in Schedule 3.5(b), there are no leases, subleases,
licenses, concessions, or other agreements, written or oral, granting to any
party or parties the right of use or occupancy of any portion of the Real
Property or space on any of the Towers.

                    (c)       Except for the Assumed Commitments and Assumed
Obligations, none of the Purchased Assets will be bound or affected by, whether
or not in writing, any Commitment; nor will Purchaser be liable for any
obligations burdening the Purchased Assets, written or oral.

                    (d)       A true and complete copy of each Ground Lease
(other then the Future Construction Site Ground Leases) and Tower Lease has been
delivered to or made available for inspection by Purchaser. Except as described
in Schedule 3.5(d), there are no existing defaults, events of default or events,
occurrences, or acts of or by Seller, or, to the best of Seller's knowledge, of
or by any other party to such agreements, that, with the giving of notice or
lapse of time or both, would constitute defaults under, and no penalties have
been incurred by Seller with respect to any of the Ground Leases or the Tower
Leases. Each Ground Lease (other than the Future Construction Site Ground
Leases) and Tower Lease is, and after consummation of its conveyance to
Purchaser hereunder will continue to be, in full force and effect and valid and
enforceable obligations of the parties thereto in accordance with its terms, and
no defenses, off-sets, or counterclaims have been asserted or may be made by any
party thereto, nor has Seller waived any rights thereunder. There are no
disputes, oral agreements, or forbearance programs in effect as to any Ground
Lease or Tower Lease; no party to any Ground Lease or Tower Lease has repudiated
any provision thereof; and, to the best of Seller's knowledge, each tenant
leasing space on a Tower under a Tower Lease has received all approvals of
governmental authorities (including licenses and permits) required in connection
with such tenant's operation of its equipment thereon, and is operating and
maintaining such equipment in accordance with applicable laws, rules, and
regulations.

                    (e)       Seller has not received notice of any plan or
intention of any other party to any Ground Lease or Tower Lease to exercise any
right to cancel or terminate such lease, and Seller does not know of any fact
that would justify the exercise of such right. Consummation of the transactions
contemplated by this Agreement will not affect the continuance in full force of
any Ground Lease or Tower Lease or give any third party the right to terminate
or modify its obligations as a party thereunder. Seller does not contemplate, or
have reason to believe that any other party to any Ground Lease or Tower Lease
contemplates, any amendment or change to any term of any Ground Lease or Tower
Lease.

                    (f)       There are no oral Assumed Obligations or Assumed
Commitments.


                                       14
<PAGE>   16


           3.6      Employee Benefits. Seller has no liability or obligation
under any present or past pension, profit-sharing, or other retirement plan,
deferred compensation plan, bonus plan, severance plan, fringe benefit plan,
health, group insurance, or other welfare benefit plan or other similar plan,
agreement, policy, or understanding, including any "employee benefit plan"
within the meaning of Section 3(3) of ERISA for which Purchaser might become
liable as a result of the transactions contemplated by this Agreement or which
might encumber any Purchased Assets following its conveyance to Purchaser
hereunder.

           3.7      No Violation; Restrictions. Neither the execution and
performance by Seller of this Agreement or the agreements contemplated hereby to
which Seller is a party, nor Seller's consummation of the transactions
contemplated hereby or thereby, will (a) except as related to any Consent
identified on Schedule 3.9 then not-yet obtained, conflict with, result in a
violation or breach of, or constitute a default under any agreement or other
instrument under which Seller is bound or to which any of the Purchased Assets
is subject, or, except as contemplated by this Agreement or such other
agreements, result in the creation or imposition of any lien, charge, or
encumbrance upon any of such Purchased Assets, or (b) violate any Applicable Law
or any restrictive covenant or deed restriction (recorded or otherwise)
applicable to the Purchased Assets. No action, suit, or proceeding has been
filed or commenced against Seller regarding Seller or the Purchased Assets
alleging any failure to comply with any Applicable Law or any restrictive
covenant or deed restriction (recorded or otherwise) applicable to the Purchased
Assets, and, to the best of Seller's knowledge, Seller has complied with all
Applicable Laws and restrictive covenants or deed restrictions (recorded or
otherwise) applicable to the Purchased Assets. Seller possesses all licenses,
franchises, permits, zoning variances, and other authorization necessary to
operate the Towers (other than those required to be held by the tenants of the
Towers), copies of which have been delivered to Purchaser. To the knowledge of
Seller, all tenants under the Tower Leases are in compliance with Applicable
Laws and any restrictive covenant or deed restriction (recorded or otherwise)
pertaining to their operations on the Tower. Seller is not a party to, and none
of the Purchased Assets is subject to or otherwise affected by, any agreement or
instrument, or any charter or other restriction, or any judgment, order, writ,
injunction, or decree that could or does materially and adversely affect the
Purchased Assets.

           3.8      Taxes. Except as set forth on Schedule 3.8 and as to, or
related to, not-yet assessed Real Property Tax amounts for periods prior to the
Closing Date for which Seller has estimated and escrowed, but not yet paid, Tax
amounts:

                    (a)       Seller has filed all Real Property Tax Returns
(and other Tax returns related to the Seller's operation of the Purchased
Assets) that it was required to file. All such Real Property Tax Returns and
other returns were correct and complete in all material respects. All Real
Property Taxes (and other Taxes related to the Seller's operation of the
Purchased Assets) owed by Seller (whether or not shown on any Tax return) have
been paid. Seller is not currently the beneficiary of any extension of time
within which to file any Real Property Tax Return or other Tax return related to
the Seller's operation of the Purchased Assets;

                    (b)       There is no material dispute or claim concerning
any Tax liability of Seller either (i) claimed or raised by any Taxing Authority
in writing or (ii) as to which Seller and the directors and officers of Seller
has knowledge based upon personal contact with any agent of such Taxing
Authority;


                                       15
<PAGE>   17


                    (c)       Seller has collected and paid all Taxes required
to have been collected and paid in the ordinary course of business in connection
with the Tower Leases.

           3.9      Consents. Except for the Consents of the Persons set forth
on Schedule 3.9, no Consent is required to authorize, or is required in
connection with, the execution, delivery, or performance of this Agreement or
the agreements contemplated hereby on the part of Seller, including without
limitation the assignment of the Ground Leases and the Tower Leases to Purchaser
pursuant to the terms hereof.

           3.10     Tenant's Rights of First Refusal. Except for the rights of
first refusal of tenants under Tower Leases set forth in Schedule 3.10 hereof,
no tenant under a Tower Lease or ground lessor under a Ground Lease has any
right of first refusal or first offer that must be complied with in connection
with the execution, delivery, or performance of this Agreement or the agreements
contemplated hereby on the part of Seller, including without limitation the
conveyance of the Towers and assignment of the Ground Leases and the Tower
Leases to Purchaser pursuant to the terms hereof.

           3.11     Finder's Fee. Neither Seller nor any shareholder of Seller
has incurred any obligation for any finder's, broker's, or agent's fee in
connection with the transactions contemplated hereby.

           3.12     Litigation. Except as described in Schedule 3.12, there is
no legal action, condemnation or administrative proceeding or investigation
instituted or, to the knowledge of Seller, threatened against or affecting, or
that could affect, any of the Purchased Assets. Seller knows of no basis for any
such action, proceeding or investigation. Except as described in Schedule 3.12,
Seller is not (a) subject to any continuing court or administrative order,
judgment, writ, injunction, or decree applicable specifically to Seller or to
the Purchased Assets or (b) in default with respect to any such order, judgment,
writ, injunction or decree.

           3.13     Books of Account The books of account maintained by Seller
for the Purchased Assets have been kept accurately in all material respects in
the ordinary course of its business; the transactions entered therein represent
bona fide transactions; and the revenues, expenses, assets, and liabilities of
the Purchased Assets have been properly recorded in such books.

           3.14     Environmental Matters.  Except as set forth on Schedule 3.14
and in the Phase I Reports:

                    (a)       To the knowledge of Seller, Seller is not in
violation of any Environmental Law, and Seller is not aware of any fact or
condition in the operation of the Towers or the ownership or use of any Real
Property by Seller that could reasonably be expected to result in any liability
of Seller under any Environmental Law, except for such violations and
liabilities which would not individually or in the aggregate reasonably be
expected to have a material adverse effect on the Purchased Assets. No action,
suit, proceeding, hearing, investigation, charge, complaint, claim, demand, or
notice has been filed or served upon Seller or to the knowledge of Seller,
commenced, against Seller alleging any failure so to comply. Without limiting
the generality of the preceding sentence, Seller has obtained and been in
compliance with all of the terms and conditions of all permits, licenses, and
other authorizations that are



                                       16
<PAGE>   18


required under, and to the knowledge of Seller, Seller has complied with all
other limitations, restrictions, conditions, standards, prohibitions,
requirements, obligations, schedules, and timetables that are required by all
Environmental Laws applicable to the Purchases Assets, except for such
violations and liabilities which would not, individually or in the aggregate,
reasonably be expected to have a material adverse effect on the ownership or
operation of the Purchased Assets.

                    (b)       No asbestos-containing thermal insulation or
products containing PCB, formaldehyde, chlordane, or heptachlor or other
Hazardous Materials have been placed on or in any structure on the Real Property
by Seller or, to the knowledge of Seller, by any prior owner or user of the Real
Property. No underground storage tanks for petroleum or any other Hazardous
Material, including underground piping or conduits connected hereto are or, to
the knowledge of Seller, have previously been, located on the Real Property.
Seller has made available to Purchaser all environmental studies, records and
reports in its possession or control conducted by independent contractors or
Seller, and all correspondence with any governmental entities, in each case
which relate to environmental conditions of the Real Property, or which identify
underground storage tanks or otherwise relate to contamination of the soil or
groundwater of the Real Property or effluent into the air. To the knowledge of
Seller, there has been no release of or contamination by Hazardous Materials on
the Real Property, except for such releases or contaminations that would not
reasonably be expected to have a material adverse effect.

           3.15     Real Estate Matters.  Except as set forth on Schedule 3.15:

                    (a)       To the knowledge of Seller, the structure,
condition and operation of the Towers and Related Improvements are in compliance
with all Applicable Laws and any restrictive covenants or deed restrictions
(recorded or otherwise) applicable to the Purchased Assets. There is no
structural or, to the knowledge of Seller, latent, defect in any Tower or
Related Improvement that has not been disclosed to Purchaser. The Tower, Related
Improvements and all such other property, including without limitation, the
heating, electrical, plumbing, and other building equipment and systems that are
a part thereof have been maintained in accordance with normal industry practice,
are in working order adequate for normal operations, are in good operating
condition and repair (subject to normal wear and tear), and are suitable for the
purposes for which they presently are used.

                    (b)       No notice has been given to Seller by any
insurance company, or any board of fire underwriters or any other body
exercising similar functions, with respect to any Tower or Related Improvement
requesting the performance of any repair, alteration, or other work thereto that
has not been complied with.

                    (c)       No exemption from full taxation of any portion of
the Real Property has been claimed by Seller within the previous five (5) years.
Seller has no information or knowledge of any change contemplated in any
Applicable Laws, or in any restrictive covenant or deed restriction (recorded or
otherwise) applicable to the Purchased Assets, or any judicial or administrative
action or any action by adjacent landowners, that would have a material adverse
effect upon any Purchased Asset, portion of Real Property or on any of its
respective value.


                                       17
<PAGE>   19


                    (d)       There is no fact or condition that could result in
the termination of access from the Real Property to existing highways and roads,
or to sewer or other utility services serving the Real Property. All utilities
are installed and operating and all due and owing installation and connection
charges have been paid in full.

                    (e)       All Related Improvements have received all
approvals of governmental authorities (including licenses and permits) required
in connection with the ownership or operation thereof and have been operated and
maintained in accordance with Applicable Laws and any and all restrictive
covenants and deed restrictions (recorded or otherwise) applicable to the
Purchased Assets.

                    (f)       Except as set forth in Schedule 3.10 there are no
outstanding options or rights of first refusal to purchase any of the Purchased
Assets, or any portion thereof or interest therein.

                    (g)       There are no parties (other than Seller) in
possession of the Real Property, other than tenants under any Tower Leases who
are in possession of Tower space to which they are entitled.

           3.16     No Untrue Statements. The representations and warranties to
Seller contained in this Article III do not contain any untrue statement of a
fact or omit to state any fact necessary in order to make the statements and
information contained in this Article III not misleading.

           3.17     Title and Related Matters. (a) Seller is the sole owner of
the leasehold interest as ground lessee under each Ground Lease; Seller is the
sole owner of the landlord interest under each Tower Lease; and Seller is the
sole owner of each Tower, and (b) Seller has not assigned, transferred or
hypothecated any of the foregoing ownership interests other than to secure
certain indebtedness of Seller, which indebtedness will be discharged, and the
related security interest encumbering any such interest released, prior to the
conveyance of such interest to Purchaser hereunder.

                                   ARTICLE IV
                   REPRESENTATIONS AND WARRANTIES OF PURCHASER

           Purchaser represents and warrants to Seller that the statements
contained in this Article IV (including without limitation all information set
forth on the Schedules) are correct and complete as of the date of this
Agreement and shall be correct and complete as of the Closing Date (as though
made then and as though the Closing Date were substituted for the date of this
Agreement throughout this Article IV).

           4.1      Organization and Good Standing; Power and Authority;
Authorization and Validity. Purchaser is a corporation, duly organized, validly
existing and in good standing under the laws of the State of Delaware, with all
requisite power and authority to carry on the business in which it is engaged
and to own the properties it owns. Purchaser has the full power and authority to
execute, deliver, and perform its obligations under this Agreement and all other
agreements and documents to which it is or will be a party in connection with
this Agreement



                                       18
<PAGE>   20


and the transactions contemplated hereby. Purchaser's execution, delivery, and
performance of this Agreement and the other agreements contemplated hereby to
which Purchaser is or will be a party, and the consummation of the transactions
contemplated hereby and thereby, have been duly authorized by Purchaser. This
Agreement and each other agreement contemplated hereby to which Purchaser is or
will be a party have been or will be duly executed and delivered by Purchaser
and constitute or will constitute legal, valid, and binding obligations of
Purchaser, enforceable against it in accordance with their terms, except as may
be limited by applicable bankruptcy, insolvency or similar laws affecting
creditors' rights generally or the availability of equitable remedies.

           4.2      No Violation. Neither the execution and performance by
Purchaser of this Agreement or the other agreements contemplated hereby to which
Purchaser is a party, nor Purchaser's consummation of the transactions
contemplated hereby or thereby will (a) conflict with, result in a breach of, or
constitute a default under the articles of incorporation or bylaws of Purchaser
or any agreement or other instrument under which Purchaser is bound or to which
any of its assets is subject, or (b) violate any Applicable Law.

           4.3      Consents. No Consent is required to authorize, or is
required in connection with, the execution, delivery and performance of this
Agreement or the agreements contemplated hereby on the part of Purchaser.

           4.4      Finder's Fee. Neither Purchaser nor any shareholder of
Purchaser has incurred any obligation for any finder's, broker's, or agent's fee
in connection with the transactions contemplated hereby.

           4.5      No Untrue Statements. The representations and warranties of
Purchaser contained in this Article IV do not contain any untrue statement of a
fact or omit to state any fact necessary in order to make the statements and
information contained in this Article IV not misleading.

                                    ARTICLE V
                                 JOINT COVENANTS

           5.1      Cooperation. Each party hereto shall use its commercially
reasonable efforts to: (a) proceed promptly to make, or give the necessary
applications, notices, requests, and filings to obtain, at the earliest
practicable date and, in any event, before the Closing Date for which the same
are required, all Consents necessary to consummate the transactions contemplated
by this Agreement; (b) cooperate with and keep the other party informed in
connection with this Agreement; (c) take such actions as the other party may
reasonably request to consummate the transactions contemplated by this
Agreement; (d) use its reasonable efforts and diligently attempt to satisfy, to
the extent within its control, all conditions precedent to the obligations to
close the transactions contemplated by this Agreement; and (e) do all such other
things as are necessary or advisable in order to consummate the transactions
contemplated by this Agreement.

           5.2      Public Announcements. Seller and Purchaser shall consult
with each other before any press release or public statement with respect to the
transactions contemplated by this



                                       19
<PAGE>   21


Agreement is made and shall not issue any such press release or make any such
public statement without the consent of the other party (which consent shall not
be unreasonably withheld, conditioned or delayed) except as may be required by
law.

           5.3      Confidentiality. Purchaser and Seller shall cause all
information obtained by them or their representatives in connection with the
transactions contemplated by this Agreement or in connection with the
negotiation hereof to be treated as proprietary and confidential (other than
information that is a matter of public knowledge or has already been or is
hereafter published in any publication for public distribution or filed as
public information with any governmental authority) and shall not use or
disclose, except as may be required by law, or knowingly permit others to use or
disclose, any such information in a manner detrimental to Purchaser or Seller,
as the case may be, and, if for any reason the transactions contemplated by this
Agreement are not consummated, will return all such information to the provider.

           5.4      Further Assurances. After each Closing, the parties to this
Agreement shall execute and deliver such additional documents and take such
additional actions as any party or its counsel may reasonably deem to be
practicable and necessary or advisable in order to consummate the transactions
contemplated by this Agreement and to vest more fully in Purchaser after such
Closing the ownership of the Purchased Assets conveyed thereat.

           5.5      FAA/FCC Filings. Purchaser will file in a timely manner all
necessary notices and other documents with the Federal Aviation Administration
and the Federal Communications Commission, including without limitation, an FCC
Form 854 for each Tower that is purchased. Prior to filing each FCC Form 854,
Purchaser will provide Seller with a reasonable opportunity to review such form
and Seller will review such form and confirm that the information relating to
the Tower that is the subject of such FCC Form 854 is accurate.

                                   ARTICLE VI
                               SELLER'S COVENANTS

           6.1      Conduct of Business Before Closing Dates.

                    From and after the date hereof through the date of
conveyance of a Purchased Asset to Purchaser hereunder, except as otherwise
permitted or required by this Agreement, Seller shall:

                    (i) conduct the operations of such Purchased Asset in the
           ordinary and usual course of business consistent with past and
           current practices;

                    (ii) take no action that, and use reasonable efforts not
           to fail to take any action the failure to take which, would cause or
           permit the representations and warranties of Seller contained in this
           Agreement as to such Purchased Asset to be untrue in any material
           respect at the date of its conveyance hereunder;

                    (iii) except with prior notice to Purchaser and the
           covenant that the same will be released on or prior to the applicable
           Closing Date, not mortgage or pledge such



                                       20
<PAGE>   22


           Purchased Asset, or subject such Purchased Asset to any lien, lease,
           security interest, or other charge or encumbrance;

                    (iv) not sell, lease, transfer, or assign such Purchased
           Asset; and

                    (v) not accelerate, terminate, modify, or cancel any Ground
           Lease or any Tower Lease, or any other agreement, contract, lease, or
           license constituting a part of such Purchased Asset.

           6.2      Post Closing Audits. Seller, at Purchaser's sole cost and
expense, will cooperate reasonably with Purchaser in connection with any audits
of Purchaser's and its acquired businesses' financial statements necessary in
connection with financings done by Purchaser after the Closing.

           6.3      Notice of any Material Change. Seller shall promptly but not
later than ten (10) business days before each Closing Date, supplement or amend
the Schedules hereto to disclose the occurrence of any event or the existence of
any state of facts (including, without limitation, an environmental matter)
that: (a) had such event occurred or such facts existed or been known at the
date hereof, would have been required to have been set forth in a Schedule; or
(b) would make any of the representations and warranties of Seller in this
Agreement untrue in any material respect. No supplement or amendment to any
Schedule shall have any effect for the purpose of determining the satisfaction
of or compliance with the conditions to the obligations of the parties set forth
elsewhere in this Agreement.

           6.4      Hazardous Materials. Seller shall not use, manufacture,
store, generate, handle, or dispose of any Hazardous Substances at any Tower
Site, nor use or permit a Tower Site to be used for such purposes, nor emit,
release or discharge any such Hazardous Substances into the air, soil, surface
water or groundwater comprising the Real Property.

           6.5      Intentionally Omitted.

           6.6      Nonsolicitation. Seller agrees that the knowledge it holds
regarding the Purchased Assets could enable it to injure the Purchaser and
diminish the value of Purchaser's investment in the Purchased Assets should
Seller compete with the Purchaser. Therefore, Seller hereby agrees that, for the
period of the two (2) years immediately following the Closing Date at which
Seller's interest in a Tower Lease is conveyed to Purchaser hereunder, Seller
will not solicit, directly or indirectly, the tenant under such Tower Lease to
terminate such Tower Lease in order to enter into a similar lease relating to a
tower owned by Seller or LCC within a 40 mile radius of the Tower to which such
Tower Lease relates.

           6.7      Bulk Transfer Laws. Purchaser waives compliance with the
provisions of any bulk transfer laws of any jurisdiction in connection with the
transactions contemplated by this Agreement. Seller warrants and agrees to pay
and discharge when due all claims of creditors that could be asserted against
Purchaser by reason of such non-compliance.

           6.8      Exclusivity. Except as is required in complying with the
right of first offer rights of tenants disclosed on Schedule 3.10 hereof, Seller
(A) shall not (i) solicit, initiate, or



                                       21
<PAGE>   23


encourage, or authorize any Person to solicit, initiate or encourage, directly
or indirectly, any inquiry, proposal or offer from any Person relating to the
acquisition of all or any material part of the Purchased Assets, or (ii) assist
or participate in any discussions or negotiations regarding, or provide any
Person with information or assistance in furtherance of, or facilitate in any
other manner any effort or attempt by any Person to, acquire all or any material
portion of the Purchased Assets, and (B) shall promptly notify Purchaser orally
and in writing of all inquiries, proposals or offers received with respect to
such matters.

           6.9      Intentionally Omitted.

           6.10     Environmental Remedial Work. If and in the event Purchaser
discovers on a Tower Site, no later than 120 days after its Closing Date, the
presence of Hazardous Materials on, or such other condition at, such Tower Site
in violation of any Environmental Law in effect as of such Closing Date (any of
the foregoing, a "Discovered Violation") and such Discovered Violation was
neither (i) referenced in the Phase I Report for such Tower Site provided to
Purchaser hereunder prior to such Closing Date (if one was so furnished) nor
(ii) referenced in any supplemental information supplied to Purchaser by Seller
pursuant to Section 6.3 prior to such Closing Date (any Discovered Violation
having been neither so disclosed in such report nor otherwise disclosed by
Seller hereunder, a "Subsequent Violation"), then, on or prior to such 120th
day, Purchaser shall notify Seller, in writing, of such Subsequent Violation or
Subsequent Violations on such Tower Site; Purchaser having no right to present
to Seller more than one violation notice per Tower Site (although the one notice
may reference more than one Subsequent Violation at such Tower Site), which
notice shall also describe in reasonable detail the nature of such Subsequent
Violation(s). Seller shall have a period of ten (10) business days following
receipt of such notice from Purchaser to notify Purchaser, in writing, as to
whether (i) Seller, at Seller's sole cost and expense, will remedy such
Subsequent Violation to the reasonable satisfaction of Purchaser, (ii) Seller
will purchase the affected Tower Site back from Purchaser or (iii) Seller, in
good faith, disputes that such Discovered Violation is a Subsequent Violation.
In the event Seller elects to remedy the violation, Seller will promptly proceed
to do so, with Purchaser providing Seller, its agents and contractors,
reasonable access to the Tower Site to allow the conduct of such remediation,
and Seller shall complete such remediation, to the reasonable satisfaction of
Purchaser, within a commercially reasonable period of time (with "commercially
reasonable" in no event requiring Seller's engagement of contractors at premium
rates for expedited service). If, following Seller's completion of such
remediation and provision of written notice of such completion to Purchaser,
Purchaser has determined, by written notice provided to Seller within ten (10)
business days of receipt of such completion notice, that such remediation is not
satisfactory to Purchaser for the reasons set forth in such notice, the parties
shall work in good faith to resolve the disagreement. If the parties cannot
resolve the dispute, they shall promptly submit the dispute to an arbitrator
mutually selected by the parties (the "Environmental Arbitrator") for
resolution. The Environmental Arbitrator's resolution shall be final and binding
upon the parties. Purchaser and Seller shall each pay one-half of the expenses
of the Environmental Arbitrator. In the event Seller elects to purchase such
Tower Site back from Purchaser, such closing shall occur within five (5)
business days of Purchaser's receipt of Seller's election notice. At such
closing, Purchaser and Seller shall execute and deliver conveyance documents for
the Tower Site substantially similar to the Conveyance Documents for such Tower
Site originally executed hereunder and Seller shall pay to Purchaser, in
immediately available funds, the Allocated Purchase Price for such Tower Site,
as adjusted for



                                       22
<PAGE>   24


prorations as set forth in Section 2.4(b) hereof. In the event Seller shall
dispute the Discovered Violation as qualifying as a Subsequent Violation, Seller
shall present Purchaser with copies of the supporting evidence on which Seller
is relying and the parties shall work in good faith to resolve the disagreement.
If the parties cannot resolve the dispute, they shall promptly submit the
dispute to the Environmental Arbitrator for resolution. The Environmental
Arbitrator's resolution shall be final and binding upon the parties. Purchaser
and Seller shall each pay one-half of the expenses of the Environmental
Arbitrator.

           In the event Seller fails to notify Purchaser of Seller's election
regarding a Tower Site affected by a Subsequent Violation in a timely manner and
otherwise as set forth in this Section 6.10, Seller shall be deemed to have
elected to purchase back such Tower Site and the parties shall proceed to
closing as provided above.

           Seller shall protect, indemnify and save Purchaser harmless from and
against any and all Damages that Purchaser may suffer or incur as a result of
any claims, demands, damages, losses, liabilities, costs, charges, suits,
orders, judgments or adjudications asserted, assessed, filed, or entered against
Purchaser by any third party, including, without limitation, any governmental
authority, arising from the existence of a Subsequent Violation on a Tower Site
following Purchaser's taking title thereto, except as the same arose by reason
of or is attributable to acts of Purchaser, its employees, contractors or
agents.

           6.11     SNDA Threshold. With respect to each Subject Tower Site,
commencing no later than the date hereof and continuing thereafter until the
first to occur of (i) the ninetieth (90th) day following the Closing of such
Tower Site or (ii) the first date as of which the number of Subject Tower Sites
does not exceed the SNDA Threshold, Seller shall use commercially reasonable
efforts to procure an SNDA for such Tower Site. If, as of the termination of
such last ninety-day period hereunder, Seller has reduced the number of Subject
Tower Sites to no greater than the SNDA Threshold, then Seller shall give
Purchaser written notice of such fact (the "Deficiency Notice"). Such notice
shall identify (i) each remaining Subject Tower Site, (ii) the principal balance
(then-outstanding, if such information is available) of the debt relating to the
mortgage for which such SNDA is lacking, and (iii) the number of Subject Tower
Sites in excess of the SNDA Threshold. At any time within the sixty (60) day
period following Purchaser's receipt of the Deficiency Notice, Purchaser may, by
written notice to Seller, identify such Subject Tower Sites in such number as
Purchaser may elect (but on no event greater than the number by which the
Subject Tower Sites exceed the SNDA Threshold) that Purchaser is requiring
Seller to purchase back from Purchaser. Seller's purchase of such identified
Subject Tower Sites shall occur with five (5) business days of Seller's receipt
of Purchaser's buy-back notice. At such closing, Purchaser and Seller shall
execute and deliver conveyance documents for the identified Subject Tower Sites
substantially similar to the Conveyance Documents for such Tower Sites
originally executed hereunder and Seller shall pay to Purchaser, in immediately
available funds, the aggregate Allocated Purchase Price of such identified
Subject Tower Sites (as adjusted for prorations as set forth in Section 2.4
hereof).

           6.12     Ground Lessor Estoppels. For each Tower Site Seller shall,
commencing no later than the date hereof and continuing thereafter for a period
of ninety (90) days following the Closing of such Tower Site, use commercially
reasonable efforts to obtain from the ground lessor at such Tower Site an
estoppel in substantially the form of the attached Exhibit D;




                                       23
<PAGE>   25


provided, however, that (i) nothing contained herein shall obligate Seller to
incur any cost in connection with Seller's exercising commercially reasonable
efforts to obtain such estoppel and (ii) Seller shall have no obligation for a
failure to obtain such estoppel provided Seller has used commercially reasonable
efforts to do so throughout such 90 day period in accordance with this Section
6.12.

           6.13     Tenant's Rights of First Refusal. Seller shall use
commercially reasonable efforts to obtain a waiver of each Tenant's Right of
First Refusal and to assure Purchaser, to Purchaser's reasonable satisfaction,
that each such Tenant's Right of First Refusal has expired or been waived prior
to the applicable Closing Date; provided, however, that nothing contained herein
shall obligate Seller to incur any cost in connection therewith.

           6.14     Construction Sites. Seller shall use commercially reasonable
efforts to complete and convey all Construction Sites in accordance with the
terms and conditions of this Agreement; provided however, if Seller, after
exercising commercially reasonable efforts, is unable to complete or convey a
Construction Site, Seller shall use commercially reasonable efforts to
substitute a substantially similar replacement tower site subject to Purchaser's
approval (which may not be unreasonably withheld) and further subject to the
parties' mutual agreement on the annual rent amounts for such site for purposes
of determining "Annual Rent" under, and as such term is defined in, the Tower
Lease Agreement.

                                   ARTICLE VII
                        PURCHASER'S CONDITIONS PRECEDENT

           7A.      Conditions Precedent to Initial Closing. Except as may be
waived in writing by Purchaser, the obligations of Purchaser to consummate the
Initial Closing hereunder are subject to the fulfillment at or before the
Initial Closing of each of the following conditions:

           7A.1     Representations and Warranties. Each representation and
warranty of Seller contained herein shall be true and correct in all material
respects as of the Initial Closing, subject to any changes contemplated by this
Agreement.

           7A.2     Covenants. Seller shall have performed and complied with all
covenants or conditions required by this Agreement to be performed and complied
with by Seller at or before the Initial Closing.

           7A.3     Proceedings. No suit, action, order, or other proceeding by
any court or governmental body or agency shall have been threatened in writing,
asserted, instituted, or entered to restrain or prohibit the carrying out of the
transactions contemplated by this Agreement, including without limitation the
Tower Services Agreement and the Tower Lease Agreement.

           7A.4     No Material Adverse Change. No material adverse condition or
material adverse change in the Purchased Assets shall have occurred.

           7A.5     Intentionally Omitted.


                                       24
<PAGE>   26


           7A.6     Approvals of Third Parties. Seller shall have received all
Consents, if any, necessary for Seller to take the corporate action required to
consummate the transactions contemplated by this Agreement.

           7A.7     Section 7C Conditions. All conditions set forth in
Section 7C must be satisfied for each Tower Site included in the Initial
Closing.

           7A.8     Certificate. Purchaser shall have received a certificate
from an officer of Seller, dated the Initial Closing Date, to the effect that,
to the knowledge of the officer, the conditions set forth above have been
satisfied.

           7B.      Conditions Precedent to Subsequent Closings. Except as may
be waived in writing by Purchaser, the obligations of Purchaser to consummate
each Subsequent Closing hereunder are subject to the fulfillment at or before
such Subsequent Closing of each of the conditions set forth in Sections 7A.1,
7A.2, 7A.3, 7A.4 (solely with respect to the Purchased Assets to be conveyed at
such Subsequent Closing), 7A.6 and 7A.7, 7A.8 above (with the term "Initial
Closing" used therein being deemed to be the term "Subsequent Closing").

           7C.      Conditions Precedent to Closing on a Tower Site. Except as
may be waived in writing by Purchaser (as such waiver may be conditioned by
Purchaser as Purchaser deems appropriate in its sole discretion and Seller has
accepted in writing such condition to such waiver), the obligations of Purchaser
to consummate the purchase of a Tower Site hereunder are subject to the
fulfillment at or before the Closing Date therefor of each of the following
conditions (Tower Sites not meeting such conditions on or before the Initial
Closing Date being referred to as "Non-Conforming Sites" or "Construction Sites"
hereunder):

           7C.1     Title Insurance. For such Tower Site, Purchaser shall have
obtained a leasehold title insurance ("Title Insurance") commitment no later
than five (5) business days before the Closing that conforms to the following:

                    (A)       The Title Insurance commitment shall be an ALTA
Policy of Title Insurance (or equivalent policy acceptable to Purchaser if the
Real Property is located in a state in which an ALTA Policy of Title Insurance
is not available) issued by a title insurer satisfactory to Purchaser in such
amount as Purchaser may reasonably determine, insuring title to the Ground Lease
to be in Purchaser as of the Closing.

                    (B)       The Title Insurance commitment shall contain no
exceptions other than Permitted Encumbrances.

           7C.2     Survey. Purchaser shall have received a current survey of
such Tower Site (a "Survey") certified to Purchaser in a surveyor's certificate
in substantially the form of the attached Exhibit E, prepared by a licensed
surveyor and conforming to current ALTA Minimum Detail Requirements for Land
Title Surveys and conforming to the following:

                    (A)       The Survey shall disclose the location of the
Tower and any and all Related Improvements on the Real Property constituting the
Tower Site, easements, party walls, sidewalks, roadways, utility lines, and
other matters shown customarily on such surveys, and showing access
affirmatively to public streets and roads;


                                       25
<PAGE>   27


                    (B)       The Survey shall not disclose any survey defect or
encroachment from or onto the Tower Site which materially interferes with the
use of the Tower Site as presently used by Seller that has not been cured or
insured over;

                    (C)       The Survey shall confirm (i) that such Tower Site
abuts on and has direct vehicular access to a public road, or has access to a
public road via a permanent, irrevocable, appurtenant easement benefiting such
Tower Site, and access to the Tower Site is provided by public right-of-way with
adequate curb cuts available, and (ii) that all utilities required for the
operation of the improvements at the Tower Site enter the Real Property through
adjoining public streets or, if they pass through an adjoining private tract, do
so in accordance with valid public easements;

                    (D)       The Survey shall confirm that the legal
descriptions for the Real Property contained in the Ground Leases are legally
sufficient and describe the Real Property fully and adequately;

                    (E)       The Survey shall show that the Tower and Related
Improvements at such Tower Site are located within the boundary lines of the
described Real Property, are not in violation of setback requirements, zoning
laws, and ordinances, and do not encroach on any exclusive easement that may
burden the Real Property, and, in the event being so subject would materially
interfere with the use of the Tower Site as presently used by Seller, that
neither the Tower nor any of the Related Improvements at such Tower Site are
subject to "permitted non-conforming structure" or similar classifications; and

                    (F)       The Survey shall confirm that the Real Property
constituting such Tower Site does not serve any adjoining property for any
purpose inconsistent with the use of such Real Property, and such Real Property
is not located within any flood plain or subject to any similar type restriction
for which any permits or licenses necessary to the use thereof have not been
obtained.

           7C.3     Lease Documentation. True, correct, and complete originals
of the Ground Leases and all Tower Leases related to such Tower Site shall have
been delivered to Purchaser. Such Ground Lease (or memorandum thereof) shall
have been duly and properly recorded in the appropriate office of the
jurisdiction where the Real Property covered by such Ground Lease is located.

           7C.4     Intentionally Omitted

           7C.5     Termination of Tenant's Right of First Refusal. Any Tenant's
Right of First Refusal for the Tower at such Tower Site shall have terminated,
expired, or cancelled or waived to Purchaser's satisfaction.

           7C.6     UCC Termination. Seller shall have delivered to Purchaser
(or shall deliver at the applicable Closing following application of proceeds at
closing) a fully executed UCC-3 Financing Statement terminating any UCC security
interest encumbering the Tower or Related Improvement related to such Tower
Site.


                                       26
<PAGE>   28


           7C.7     Environmental Matters. The Phase I Report for such Tower
Site, together with any supplemental environmental information for such Tower
Site received by Purchaser under Section 6.8 hereof, shall be acceptable to
Purchaser in Purchaser's reasonable discretion.

           7C.8     Approvals of Third Parties. Seller shall have received all
Consents, if any, required for Seller's conveyance of such Tower Site to
Purchaser in accordance with and as contemplated under this Agreement.

           7D.      Conditions Precedent to Closing on a Non-Conforming Site.
Except as may be waived in writing by Purchaser, the obligations of Purchaser to
consummate, at a Subsequent Closing, the purchase of a Tower Site that was a
Non-Conforming Site as of the Initial Closing Date, is subject to Seller's
taking such actions as may be required to cause such Tower Site to satisfy, on
or before the ninetieth (90th) day following the Initial Closing Date, each of
the conditions set forth in Sections 7A, 7B, and 7C above.

                    In the event that Seller fails to cause a Non-Conforming
Site to satisfy such conditions (and present Purchaser reasonable evidence
thereof) on or before the ninetieth (90th) day following the Initial Closing
Date, then either Seller or Purchaser may elect, in its sole discretion and by
written notice provided to the other party no later than the ninety-fifth (95th)
day following the Initial Closing Date, to exclude such Tower Site from the
Purchased Assets being purchased hereunder, in which event, the Purchase Price
shall be reduced for all purposes hereunder by such Tower Site's Allocated
Purchase Price and neither Seller nor Purchaser shall have any further
obligation to the other hereunder with respect to such Tower Site. In the event
Purchaser does not elect to exclude a Non-Conforming Site from the Purchased
Assets as set forth and in accordance with the foregoing sentence (and Seller
has not so elected as so provided), then Purchaser shall be deemed to have
waived any such non-cured defect and the parties shall proceed to close on such
Tower Site at a Subsequent Closing at which time, among the other closing
actions taken by the parties for such Tower Site, such Tower Site's Allocated
Purchase Price will be paid to Seller. In no event shall Seller have any
obligation, express or implied, to cure, or to take any action to cure, any
defect alleged by Purchaser affecting a Non-Conforming Site, and in no event
shall Seller have any liability to Purchaser for Seller's failure to so cure (or
take any action to cure).

           7E.      Conditions Precedent to Closing on a Construction Site.
Except as may be waived in writing by Purchaser, the obligations of Purchaser to
consummate, at a Subsequent Closing, the purchase of a Tower Site that was a
Construction Site as of the Initial Closing Date, is subject to satisfaction of
the following:

           7E.1     Construction of such Site has been completed on or before
December 31, 2000 (the "Construction Term Date"); provided, however, that should
Seller be unable to complete construction of a Construction Site by the
Construction Term Date due to circumstances beyond its reasonable control, then
the time for performance of the foregoing obligation of Seller shall be extended
for a period of time reasonably necessary under the circumstances, but in no
event to exceed sixty (60) days after the Construction Term Date.

           7E.2     Construction of such Construction Site has been completed in
accordance with the plans and specifications set forth in Exhibit F hereto;


                                       27
<PAGE>   29


           7E.3     Seller has provided Purchaser with "as-builts" for such
Tower Site;

           7E.4     If the Ground Lease related to such Tower Site was a Future
Construction Site Ground Lease, Seller shall have entered into a ground lease
for such site whose terms and conditions satisfy the requirements set forth on
Schedule 7E.4 attached hereto;

           7E.5     Such Construction Site satisfies each of the conditions set
forth in Section 7C above.

           7E.6     There are no leases, subleases, licenses, concessions or
other agreements, written or oral, granting to any party or parties the right of
use or occupancy of the Construction Site other than those reasonably acceptable
to Purchaser. Purchaser hereby acknowledges that Centennial Cellular or an
Affiliate thereof is an acceptable tenant for Construction Sites.

           In the event the foregoing conditions are not satisfied for any
Construction Site on or before the Construction Term Date (as the same may have
been extended as set forth in Section 7E.1 above), then either Seller or
Purchaser may elect, in its sole discretion and by written notice provided to
the other party no later than the fifth (5th) day following the Construction
Term Date, to exclude such Construction Site from the Purchased Assets being
purchased hereunder, in which event, the Purchase Price shall be reduced for all
purposes hereunder by such Construction Site's Allocated Purchase Price and
neither Seller nor Purchaser shall have any further obligation to the other
hereunder with respect to such Construction Site. Provided Seller shall have
complied with Seller's obligations under Section 6.14, Seller shall have no
liability to Purchaser for Seller's failure to deliver to Purchaser a
Construction Site.

                                  ARTICLE VIII
                        THE SELLER'S CONDITIONS PRECEDENT

           8A.      Conditions Precedent to Initial Closing. Except as may be
waived in writing by Seller, the obligations of Seller to consummate the Initial
Closing hereunder are subject to the fulfillment at or before the Initial
Closing of each of the following conditions:

           8A.1     Representations and Warranties. Each representation and
warranty of Purchaser contained herein shall be true and correct in all material
respects as of the Initial Closing, subject to any changes contemplated by this
Agreement.

           8A.2     Covenants. Purchaser shall have performed and complied with
all covenants or conditions required by this Agreement to be performed and
complied with by it at or before the Initial Closing.

           8A.3     Proceedings. No order by any court or governmental body or
agency shall have been entered to restrain or prohibit the consummation of the
transactions contemplated by this Agreement, including without limitation the
Tower Services Agreement and the Tower Lease Agreement.



                                       28
<PAGE>   30


           8A.4     Certificate. Seller shall have received a certificate from
an officer of Purchaser, dated the Initial Closing Date, to the effect that, to
the knowledge of the officer, the conditions set forth above have been
satisfied.

           8A.5     Intentionally Omitted.

           8B.      Conditions Precedent to Subsequent Closings. Except as may
be waived in writing by Seller, the obligations of Seller to consummate each
Subsequent Closing hereunder are subject to the fulfillment at or before such
Subsequent Closing of each of the conditions set forth in Sections 8A.1, 8A.2,
8A.3 and 8A.4 above (with the term "Initial Closing" used therein being deemed
to be the term "Subsequent Closing").

                                   ARTICLE IX
                            INDEMNIFICATION; REMEDIES

           9.1      Seller's Indemnity. Subject to the terms and conditions of
this Article IX, Seller hereby agrees to indemnify, defend, and hold harmless
Purchaser and its officers, directors, shareholders, agents, and attorneys for,
from, and against all Damages asserted against or incurred by any of them by
reason of or resulting from (a) a breach by Seller of any representation,
warranty, or covenant contained herein; (b) liabilities of Seller not expressly
assumed by Purchaser pursuant to the terms hereof (other than with respect to
any matter for which Purchaser could seek indemnification pursuant to the
foregoing clause (a)); (c) the operation, ownership, possession and use of the
Purchased Assets prior to the applicable Closing Date (other than with respect
to any matter for which Purchaser could seek indemnification pursuant to the
foregoing clause (a)); and (d) subject to the provisions of Section 9.3(e), a
tenant's exercise of a Tenant's Right of First Refusal, provided however, Seller
shall not be obligated to indemnify, defend, or hold harmless Purchaser if
Seller has delivered to Purchaser prior to a Closing a written waiver from such
tenant of such Tenant's Right of First Refusal.

           9.2      Purchaser's Indemnity. Subject to the terms and conditions
of this Article IX, Purchaser hereby agrees to indemnify, defend, and hold
harmless Seller for, from, and against all Damages asserted against or incurred
by any of them by reason of or resulting from: (a) a breach by purchaser of any
representation, warranty, or covenant contained herein or in any agreement
executed pursuant hereto; (b) the Assumed Obligations; and (c) the operation,
ownership, possession and use of the Purchased Assets after the Closing Date.

           9.3      Conditions of Indemnification. The obligations and
liabilities of the indemnifying party to any other party (the "party to be
indemnified") under Sections 6.10, 9.1 or 9.2 hereof with respect to claims
resulting from the assertion of liability by third parties shall be subject to
the following terms and conditions:

                    (a)       Within 30 days (or such earlier time as might be
required to avoid prejudicing the indemnifying party's position) after receipt
of notice of commencement of any action evidenced by service of process or other
legal pleading, or with reasonable promptness after the assertion in writing of
any claim by a third party, the party to be indemnified shall give the
indemnifying party written notice thereof together with a copy of such claim,
process or other



                                       29
<PAGE>   31


legal pleading, and the indemnifying party shall have the right to undertake the
defense thereof by representatives of its own choosing and at its own expense;
provided, however, that the party to be indemnified may participate in the
defense with counsel of its own choice and at its own expense.

                    (b)       If the indemnifying party, by the 30th day after
receipt of notice of any such claim (or, if earlier, by the 10th day preceding
the day on which an answer or other pleading must be served in order to prevent
judgment by default in favor of the person asserting such claim), does not elect
to defend against such claim, the party to be indemnified will (upon further
notice to the indemnifying party) have the right to undertake the defense,
compromise, or settlement of such claim on behalf of and for the account and
risk of the indemnifying party and at the indemnifying party's expense. The
indemnifying party shall advance payment for such expenses as they are incurred
by the party to be indemnified within 10 days after request therefor.

                    (c)       Anything in this Section 9.3 to the contrary
notwithstanding, the indemnifying party shall not settle any claim without the
consent of the party to be indemnified unless such settlement involves only the
payment of money and the claimant provides to the party to be indemnified a
release from all liability in respect of such claim. If the settlement of the
claim involves more than the payment of money, the indemnifying party shall not
settle the claim without the prior consent of the party to be indemnified, which
consent shall not be unreasonably withheld.

                    (d)       The party to be indemnified and the indemnifying
party will each cooperate with all reasonable requests of the other.

                    (e)       Seller shall be relieved of its obligation to
indemnify, defend or hold harmless Purchaser with respect to any tenant's
exercise of a Tenant's Right of First Refusal if Seller purchases from Purchaser
the subject Tower Site at the same price allocated to such Tower Site hereunder.

           9.4      Limitation of Liability. No liability for indemnification
shall arise on the part of an indemnifying party under this Article IX with
respect to claims for indemnification related to a breach of a representation or
warranty of such indemnifying party contained herein or in any Conveyance
Document until the aggregate amount of Damages asserted by the party to be
indemnified in one or more claims exceeds an aggregate amount of $200,000;
provided, however, that such limitation shall not apply to any liability for
indemnification with respect to any claim for indemnification based upon (i)
fraud or (ii) any misrepresentation or breach of a warranty made by the
indemnifying party which was actually known to be untrue by the indemnifying
party when made. The aggregate indemnification payable by an indemnifying party
under this Article IX with respect to any and all claims for indemnification
related to a breach of a representation or warranty of such indemnifying party
contained herein or in any Conveyance Document shall be limited to thirty
percent (30%) of the aggregate Allocated Purchase Price for the Tower Sites
purchased hereunder; provided, however, that such limitation shall not apply to
any claim for indemnification based upon (i) fraud; or (ii) any
misrepresentation or breach of a warranty made by the indemnifying party which
was actually known to be untrue by the indemnifying party when made; or (iii)
Section 9.1(c) above, and any



                                       30
<PAGE>   32


indemnification paid hereunder based upon any of the foregoing shall not be
counted towards such maximum indemnification amount.

           9.5      Exclusive Remedy; Specific Performance. The parties
acknowledge that except in the case of fraud, their sole remedy after the
Closing Date for any breach of any representation or warranty contained in this
Agreement shall be the indemnification provisions set forth in this Article IX.
Notwithstanding the foregoing, nothing herein shall be construed or interpreted
as limiting or impairing the rights or remedies that any party hereto may have
at equity, including, but not limited to, specific performance and injunctive
relief, where available.

           9.6      Reliance on and Survival of Representations and Warranties.

                    (a)       Notwithstanding any investigation by Purchaser, or
any information obtained pursuant thereto, Purchaser shall be entitled to rely
upon the representations and warranties of Seller contained in this Agreement or
any other agreement, document, certificate, exhibit, or other instrument
delivered pursuant hereto, and upon its representations at Closing as to
compliance with or performance of any covenants made by it herein or therein and
as to satisfaction of any conditions precedent to the obligations of Purchaser
hereunder.

                    (b)       All representations and warranties in this
Agreement or in any agreement, document, certificate, schedule, exhibit, or
other instrument delivered by or on behalf of a party pursuant hereto other than
those set forth in Sections 3.2 and 3.13 and any other agreement, document,
certificate, schedule, exhibit or other instrument delivered by or on behalf of
Seller pursuant thereto (the "Non-Surviving Representations"), and
indemnification obligations of the parties hereto relating to such
representations and warranties other than the indemnity set forth in Section
9.1(d) (the "Tenant's Right of First Refusal Indemnity") shall survive for
twenty-four (24) months after the Closing Date at which such was made; provided,
however that any action based upon a breach of a representation and warranty
contained in Section 3.14 and any other agreement, document, certificate,
schedule, exhibit or other instrument delivered by or on behalf of Seller
pursuant thereto may be instituted within sixty (60) months after the Initial
Closing Date. The Non-Surviving Representations shall terminate on the Initial
Closing Date. The Tenant's Right of First Refusal Indemnity shall terminate six
(6) months after the applicable Closing Date.

                                    ARTICLE X
                                   TERMINATION

           10.1     Termination. This Agreement may be terminated at any time
prior to the Initial Closing Date:

                    (a)       by mutual written consent of Seller and Purchaser;

                    (b)       by Seller, upon written notice to Purchaser, if
there has been a material breach by Purchaser of any of its representations,
warranties, covenants or agreements contained herein, or any such representation
or warranty shall have become untrue, in any case such that any of the
conditions set forth in Section 8A will not be satisfied prior to the Initial
Closing Date



                                       31
<PAGE>   33


and such breach or condition has not been cured within thirty (30) days
following receipt by Purchaser of written notice of such breach;

                    (c)       by Purchaser, upon written notice to Seller, if
there has been a material breach by Seller of any of its representations,
warranties, covenants or agreements contained herein, or any such representation
or warranty shall have become untrue, in any case such that any of the
conditions set forth in Section 7A will not be satisfied prior to the Initial
Closing Date and such breach or condition has not been cured within thirty (30)
days following receipt by Seller of written notice of such breach;

                    (d)       by either Purchaser or Seller, at any time after
the Outside Closing Date, if the Closing has not occurred on or before such date
through no fault of the terminating party or any of such party's Affiliates.

           10.2     Effect Of Termination. In the event of a termination of this
Agreement as provided above, this Agreement shall forthwith become void and
there shall be no liability hereunder on the part of either party, except for
any party's liability resulting from such party's breach of any representation,
warranty, covenant or agreement made by such party herein and except that the
agreements with respect to expenses contained in Section 11.5 shall survive
termination hereof.

           10.3     Termination Prior to a Subsequent Closing. In the event
Seller and Purchaser consummate the Initial Closing (and, if applicable, one or
more Subsequent Closings) but this Agreement is terminated thereafter pursuant
to Section 10.1(a) above, then this Agreement shall terminate as provided in
Section 10.2 provided that such termination shall in no event affect the
conveyances theretofore effected hereunder.

                                   ARTICLE XI
                                  MISCELLANEOUS

           11.1     Amendment. This Agreement may be amended, modified, or
supplemented only by an instrument in writing executed by the party against
which enforcement of the amendment, modification or supplement is sought.

           11.2     Assignment. Neither this Agreement nor any right created
hereby shall be assignable by either party hereto, except by Purchaser to a
direct or indirect wholly owned subsidiary of Purchaser, which assignment shall
not relieve Purchaser of any liability under this Agreement; provided that (i)
Seller may assign all or any portion of its rights hereunder to LCC or any
Affiliate thereof (which in turn may assign all or any portion of its respective
rights hereunder to any other Affiliate of LCC) and (ii) Seller (and, following
an assignment of its rights hereunder to LCC, LCC) may assign all or any portion
of its respective rights hereunder in connection with a merger, consolidation or
sale of substantially all its assets or to any lender as security for a loan.

           11.3     Notices. Any notice, consent, demand, request, approval, or
other communication to be given under this Agreement by any party to any other
party shall be in writing and shall be



                                       32
<PAGE>   34


either (a) personally delivered, (b) mailed by registered or certified mail,
postage prepaid with return receipt requested, (c) delivered by overnight
express delivery service or same-day local courier service, or (d) delivered by
telex or facsimile transmission, to the address set forth below, or to such
other address as may be designated by the parties from time to time in
accordance with this Section 11.3.

         If to Seller:                Microcell Management, Inc.
                                      c/o LCC International, Inc.
                                      7925 Jones Branch Drive
                                      McLean, Virginia 22102
                                      Attention:  Christopher J. Davis
                                      Fax No. (703) 873-2900

         If to Purchaser:             Pinnacle Towers Inc.
                                      1549 Ringling Boulevard, 3rd Floor
                                      Sarasota, Florida  34236
                                      Attention:  Bernard Gaboury
                                      Fax No. (941) 364-8761

           Notices delivered personally, by overnight express delivery service
or by local courier service shall be deemed given as of actual receipt. Mailed
notices shall be deemed given three business days after mailing. Notices
delivered by telex or facsimile transmission shall be deemed given upon receipt
by the sender of the answerback (in the case of a telex) or transmission
confirmation (in the case of a facsimile transmission).

           11.4     Entire Agreement. This Agreement and the Exhibits and
Schedules hereto supersede all prior agreements and understandings relating to
the subject matter hereof, except that the obligations of any party under any
agreement executed pursuant to this Agreement shall not be affected by this
Section 11.4.

           11.5     Costs, Expenses, and Legal Fees. Whether or not the
transactions contemplated hereby are consummated, each party hereto shall bear
its own costs and expenses (including attorneys' fees), and each party hereto
agrees to pay the costs and expenses, including reasonable attorneys' fees,
incurred by the prevailing party in litigation or in an administrative
proceeding to enforce or interpret any of the terms of this Agreement.

           11.6     Severability. If any provision of this Agreement is held to
be illegal, invalid, or unenforceable under present or future laws effective
during the term hereof, the provision shall be fully severable and this
Agreement shall be construed and enforced as if such illegal, invalid, or
unenforceable provision were never a part hereof; and the remaining provisions
hereof shall remain in full force and effect and shall not be affected by the
illegal, invalid, or unenforceable provision or by its severance herefrom.
Furthermore, in lieu of such illegal, invalid, or unenforceable provision, there
shall be added automatically as part of this Agreement, a provision as similar
in its terms to such illegal, invalid or unenforceable provision as may be
possible and be legal, valid, and enforceable.


                                       33
<PAGE>   35


           11.7     Governing Law. This Agreement and the rights and obligations
of the parties hereto shall be governed by and construed and enforced in
accordance with the laws of the State of Florida.

           11.8     Captions. The captions in this Agreement are for convenience
of reference only and shall not limit or otherwise affect any of the terms or
provisions hereof.

           11.9     Counterparts. This Agreement may be executed in
counterparts, each of which shall be deemed an original, and all of which
together shall constitute one instrument.

           11.10    Heirs, Successors and Assigns. This Agreement and the
rights, interests and obligations hereunder shall be binding upon and shall
inure to the benefit of the parties hereto and their respective heirs, personal
representatives, estates, devisees, successors and permitted assigns.

           11.11.   No Additional Representations or Warranties. (a) Without
limiting the foregoing, except for the representations and warranties of Seller
set forth herein, Purchaser further acknowledges and agrees that Seller has not
made, is not making, and is not deemed to have made or be making, any
representation or warranty with respect to the Purchased Assets, including with
respect to the title, workmanship, condition, design, structural integrity,
operation or fitness for use or a particular purpose, as to the absence of
latent or other defects whether or not discoverable, as to the absence of any
condition or other characteristics relating to environmental or safety matters,
as to the absence of any infringement of any patent, trademark, copyright or
other property right, whether tangible or intangible or real or personal, as to
any easements, covenants, conditions or restrictions affecting the Purchased
Assets, or as to the absence of obligations based on strict liability in tort,
or any other representations and warranties. Nothing contained herein, however,
shall be construed as limiting or restricting any representation or warranty
otherwise made by Seller under this Agreement.

                    (b)       Without limiting the foregoing, except for the
representations and warranties of Purchaser as set forth herein, Seller further
acknowledges and agrees that Purchaser has not made, is not making and is not
deemed to have made or be making, any representation or warranty. Nothing
contained herein, however shall be construed as limiting or restricting any
representation or warranty otherwise made by Purchaser under this Agreement.



                                       34
<PAGE>   36




           EXECUTED as of the date first written above.

                                       PINNACLE TOWERS INC.,
                                       a Delaware corporation



                                       By:
                                          -------------------------------------
                                       Name:
                                            -----------------------------------
                                       Title:
                                             ----------------------------------


                                       MICROCELL MANAGEMENT, INC.,
                                       a Delaware corporation



                                       By:
                                          -------------------------------------
                                       Name:
                                            -----------------------------------
                                       Title:
                                             ----------------------------------





                                       35

<PAGE>   1
                                                                     EXHIBIT 2.2
                  AMENDMENT NO. 1 TO ASSET PURCHASE AGREEMENT

                  This Amendment No. 1 (this "Amendment") to the Asset Purchase
Agreement dated as of February 24, 2000 (the "APA"), by and between Pinnacle
Towers Inc. ("Purchaser") and Microcell Management, Inc. ("Seller") is entered
into this 2nd day of March, 2000.


                                    RECITALS

                  Purchaser and Seller have agreed to go forward with the
Initial Closing under the APA with respect to 134 Tower Sites rather than 150
Tower Sites as originally contemplated by the APA and hereby wish to amend the
APA to reflect such agreement and to set forth their mutual understanding with
respect to certain arrangements to be entered into between them as a result of
reducing the Threshold Number of Tower Sites.

                                      TERMS

                  NOW, THEREFORE, Purchaser and Seller hereby agree as follows:

                  1.       Defined Terms.
                           -------------

                           (a)      Capitalized terms not defined herein shall
have the meaning given to them in the APA.

                           (b)      Section 1.1 of the APA is hereby amended by
adding the following defined terms:

                                    "Section 6.15 Correction" has the meaning
                                    set forth in Section 6.15 hereof.

                                    "Section 6.15 Cure Period" has the meaning
                                    given to such term in Section 6.15 hereof.

                                    "Section 6.15 Cure Period Termination Date"
                                    has the meaning given to such term in
                                    Section 6.15 hereof.

                                    "Section 6.15 Payment Date" has the meaning
                                    set forth in Section 6.15 hereof.





<PAGE>   2


                                    "Section 6.15 Tower Sites" has the meaning
                                    set forth in Section 6.15 hereof.

                                    "Tower Site Monthly Cash Flow" means, with
                                    respect to any Tower Site, the monthly
                                    rental revenue from such Tower Site less
                                    all direct operating expenses and costs
                                    related to such Tower Site, including
                                    without limitation, ground rents,
                                    utilities, taxes and maintenance fees.

                           (c)      Paragraph (kkk) of Section 1.1 of the APA
is hereby amended by substituting the number "one hundred thirty-four (134)"
for the number "one hundred fifty (150)."

                  2.       Amendments of Section 2.7.

                           (a)      Section 2.7(b)(i) of the APA is hereby
amended by adding the following proviso at the end thereof:

                           ", provided, further, that with respect to each
                           Section 6.15 Tower Site, the Subsequent Closing
                           thereof shall occur on the third business day
                           following the date on which Seller has provided
                           Purchaser with written evidence that the Section
                           6.15 Correction for such Section 6.15 Tower Site has
                           been made."

                           (b)      Section 2.7(b)(ii) of the APA is hereby
amended by the adding the following sentence at the end thereof:

                           "The foregoing procedures shall not govern a
                           Subsequent Closing of a Section 6.15 Tower Site,
                           which shall be governed by the last proviso of
                           Section 2.7(b)(i)."

                  3.       Amendment of Article VI.  Article VI of the APA is
                           hereby amended by adding the following new Section
                           6.15:

                  "6.15 Additional Covenants Regarding Certain Tower Sites."
With respect to the Tower Sites listed on Schedule 6.15 (the "Section 6.15
Tower Sites"), Seller agrees that it will use commercially reasonable best
efforts, throughout the period (the "Section 6.15 Cure Period") commencing on
the Initial Closing Date and terminating on the date (the "Section 6.15 Cure
Period Termination Date") that is the first to occur of (i) the ninetieth
(90th) day following the Initial Closing Date and (ii) the first date as of
which a total of no less than one hundred fifty (150) Tower Sites have been
conveyed to Purchaser, to correct the defects listed on Schedule 6.15 in the
manner specified on Schedule 6.15 (the "Section 6.15 Corrections"), provided,
that in no event shall Seller be required to spend more than an aggregate of
[              ]



                                      -2-

<PAGE>   3


[                                                    ] in fulfilling its
obligations hereunder. In addition, commencing on April 15, 2000 and continuing
on the fifteenth day of each month thereafter up to and including the month
immediately succeeding the month in which the Section 6.15 Cure Period
Termination Date occurs (each such 15th day of a month, a "Section 6.15 Payment
Date"), Seller shall pay to Purchaser the excess, if any, over (i) all Tower
Site Monthly Cash Flow due to Seller during the month prior to such Section
6.15 Payment Date (e.g., during April 2000, with respect to the payment due on
May 15, 2000) with respect to the Section 6.15 Tower Sites which were held by
Seller during such month and (ii) all Tower Site Monthly Cash Flow due to
Purchaser with respect to all Tower Sites (other than Section 6.15 Tower Sites)
conveyed to Purchaser in any Subsequent Closing which occurred during the month
which is two months prior to such Section 6.15 Payment Date (e.g., during
March, 2000 with respect to any payment due hereunder on May 15, 2000). The
foregoing determination of Tower Site Monthly Cash Flow in the case of a month
in which one or more Section 6.15 Tower Sites are conveyed to Purchaser shall
be prorated on the basis of the actual number of days in such month such Tower
Site(s) were held by Seller, and, in the case of the month in which the Initial
Closing Date or the Section 6.15 Cure Period Termination Date occurs, on the
basis of the actual number of days occurring in such month following the
Initial Closing Date and prior to the Section 6.15 Cure Period Termination
Date, respectively.

                  4.       Amendments to Section 7D.

                           (a)      The first sentence of Section 7D is hereby
amended by adding the following proviso at the end thereof:

                           ", provided, further, that the only condition
                           applicable to the Closing of a Section 6.15 Tower
                           Site shall be the completion of the applicable
                           Section 6.15 Correction."

                           (b)      The last sentence of Section 7D of the APA
is hereby amended by substituting therefore in its entirety the following:

                           "Except as required under Section 6.15, in no event
                           shall Seller have any obligation, express or
                           implied, to cure, or to take any action to cure, any
                           defect alleged by Purchaser affecting a
                           Non-Conforming Site, and in no event shall Seller
                           have any liability to Purchaser for Seller's failure
                           to so cure (or take any action to cure)."

                  5.       Amendments of Schedules 1.1(oo), 2.2(a), 2.2(b) and
2.4(a). Schedules 1.1(oo), 2.2(a), 2.2(b) and 2.4(a) of the APA are hereby
amended by



                                      -3-

<PAGE>   4


deleting Site Number MI 0945 therefrom. Schedule 1.1(oo) is hereby further
amended to provide that only the Phase I Reports having a date next to the site
name have been furnished to Purchaser.

                  6.       Amendment of Schedule 3.9.  Schedule 3.9 of the APA
is hereby amended by substituting therefor the attached Schedule 3.9.

                  7.       Other Terms of APA.  Except as set forth herein, all
other terms of the APA shall remain in full force and effect.

                  Executed in one or more counterparts as of the date first
written above.

                                     PINNACLE TOWERS INC.,
                                     a Delaware corporation


                                     By:
                                         --------------------------------
                                     Name:
                                          -------------------------------
                                     Title:
                                           ------------------------------



                                     MICROCELL MANAGEMENT, INC.,
                                     a Delaware corporation


                                     By:
                                         --------------------------------
                                     Name:
                                          -------------------------------
                                     Title:
                                           ------------------------------



                                      -4-



<PAGE>   1
                                                                     EXHIBIT 2.3

                            MASTER ANTENNA SITE LEASE

- ---------------------------------------------------------------------------

LESSOR:  PINNACLE TOWERS INC.           LESSEE:  MICROCELL MANAGEMENT, INC.
         a Delaware corporation                  a Delaware corporation
         1549 RINGLING BOULEVARD                 7925 JONES BRANCH DRIVE
         THIRD FLOOR                             McLEAN, VIRGINIA  22102
         SARASOTA, FLORIDA  34236


- ---------------------------------------------------------------------------

                  THIS MASTER ANTENNA SITE LEASE ("Agreement") is made this
24th day of February, 2000 by and between PINNACLE TOWERS INC., a Delaware
corporation ("Lessor"), and MICROCELL MANAGEMENT, INC., a Delaware corporation
having a Federal Tax ID Number of 54-1831474 ("Lessee").

                  WHEREAS, Lessee and Lessor have entered into that certain
Asset Purchase Agreement dated of even date herewith (the "APA") pursuant to
which Lessee is selling to Lessor, and Lessor is purchasing from Lessee, the
telecommunication towers listed on Schedule A attached hereto and Lessee's
interest in the ground leases, tower leases and other improvements related
thereto (each, upon Lessor's purchase thereof under the APA and for so long as
this Agreement has not been terminated with respect to such tower site, a
"Tower" and, together with the land ("Land") ground leased by Lessor related
thereto, a "Site"; and collectively, the "Towers" and the "Sites").

                  WHEREAS, Lessee wishes to lease from Lessor, space at all of
the Sites and Lessor wishes to lease such space pursuant to the terms and
conditions set forth below;

                  WHEREAS, Lessor and Lessee hereby enter into this Agreement
in order to establish the terms and conditions pursuant to which Lessee shall
have the right to lease space at such Sites.

                  NOW THEREFORE, in consideration of the mutual covenants and
agreements herein, and for other good and valuable consideration, the receipt
and sufficiency of which are hereby acknowledged, Lessor and Lessee covenant
and agree as follows:

            1.    Term. The term of this Agreement (the "Term") shall commence
on the date (the "Commencement Date") that is the Initial Closing Date (as
defined in the APA), and shall continue until December 31, 2002 (provided,
that, for the sole purpose of determining and discharging the Annual Rent for
calendar year 2002, this Agreement shall continue through February 28, 2003).
Lessee shall execute a




<PAGE>   2


written confirmation of the Commencement Date. Notwithstanding anything to the
contrary contained herein, in the event the APA is terminated prior to the
occurrence of the Initial Closing Date thereunder, this Agreement shall never
become effective and shall terminate immediately upon such termination of the
APA.

         2.       Leased Premises.

                  From and after the Commencement Date, Lessor leases to Lessee
and Lessee leases from Lessor the space located at the Sites (the "Leased
Space") and as described in Schedule B attached hereto and incorporated herein.
The parties acknowledge and agree that the Leased Space shall not include any
space being leased on any Tower as of the Commencement Date under one or more
of the existing tower leases set forth on Schedule C attached hereto (such
tower space subject to an existing lease, the "Reserved Space" and the tower
space remaining on such Tower and leased by Lessee hereunder, the "Tower Space"
for the sole purpose of locating Lessee's antennas ("Antenna Array"),
supporting equipment necessary for the operation of Lessee's Antenna Array (the
"Supporting Equipment"), to run utility lines from Lessee's utility hook-ups to
Lessee's Supporting Equipment located on the Land and to run cables from
Lessee's Supporting Equipment to the Tower Space to serve and operate Lessee's
Antenna Array for telecommunications use.

         3.       Annual Rent. (a) For each of calendar year 2000, 2001 and
2002, Lessee covenants to pay to Lessor the sum of the annual rental amounts
for such calendar year listed on Schedule A for the Towers ("Annual Rent").
Annual Rent shall be due and payable in arrears, without set-off, defense or
counterclaim of any kind, by Lessee to Lessor, beginning on February 10, 2001
for calendar year 2000 and thereafter on February 10 of each of the two
succeeding calendar years.

                  (b)  Lessee shall pay Annual Rent by electronic transfer
according to wire instructions delivered by Lessor or direct to Lessor's
lockbox account at Pinnacle Towers Inc., P.O. Box 550094, Tampa, Florida
33655-0094.

                  (c) Notwithstanding anything to the contrary set forth
herein, in the event and at such time as additional towers become subject to
this Agreement or towers never become, or cease to be, subject to this
Agreement as set forth in Section 26 hereof, the Annual Rent shall be adjusted
as provided herein.

         4.       Laws, Permits and Approvals. Lessee shall operate Lessee's
Equipment and shall use the Leased Space and the Site in strict compliance with
all applicable federal (including, without limitation, the Federal
Communications


                                       2

<PAGE>   3


Commission), state and local laws, regulations, and ordinances, and with all
site and/or installation standards and/or procedures. Lessee shall obtain and
maintain at Lessee's expense all private and governmental licenses, permits,
approvals, authorizations and consents required or necessary for such purposes
and shall provide Lessor with copies of the same no less than ten (10) days
prior to commencement of any construction, improvements or installation.

         5.       Lessee's Property. All of Lessee's Equipment shall be and
remain Lessee's personal property even though some or all of such equipment may
be physically attached to the Land or the Tower. Lessee shall be entitled to
take and remove any or all of Lessee's Equipment from the Site at any time
during normal business hours, provided that the removal of such Lessee's
Equipment shall be performed in compliance with the provisions of this
Agreement and further provided that any such removal shall not relieve Lessee
of any obligations under this Agreement.

         6.       Installation and Maintenance. (a) Lessee agrees that Lessee
shall provide Lessor at least forty-eight (48) hours prior notice of any
construction, installation (including any modification), maintenance, or
removal (collectively, "Site Work") to be performed by Lessee on Lessee's Space
and/or the Site; provided, however, in the event of an emergency outage,
reasonable maintenance may be performed after verbal notice to Lessor.
Additionally, prior to commencing any Site Work, Lessee shall obtain Lessor's
approval of detailed plans and specifications for such Site Work, which
approval shall not be unreasonably withheld or delayed. Lessee agrees that any
Site Work shall be performed by qualified technicians, shall comply with the
approved plans and specifications and shall also comply with all site and/or
installation standards and/or procedures (including, without limitation,
security procedures) which Lessor may from time to time establish regarding use
of the Site. Lessor shall have the right to inspect the Lessee's Space at any
time, including, without limitation, during and/or upon completion of any
installation and/or removal. If Lessee installs and/or removes any of Lessee's
Equipment in violation of the requirements of this Paragraph, Lessee shall be
liable for any damages that may occur as a result, and Lessor shall have the
right to immediately terminate this Agreement.

                  (b) Lessee shall at all times maintain the Leased Space and
Lessee's Equipment in a neat, clean and safe condition, in good repair, and in
a manner so as not to conflict with or create a nuisance to Lessor, other
Lessees of Lessor and/or other users of the Site, if any.

                  (c) During the Term, Lessor shall reasonably maintain the
Sites and shall inform Lessee not less than twenty-four (24) hours in advance,
of normal, non-emergency work on a Site or the Leased Space which may be
performed by Lessor if such work is likely to unreasonably interfere with the
use or operation of


                                       3

<PAGE>   4


Lessee's Equipment or with Lessee's use of the Leased Space. Lessee
acknowledges that in order for Lessor to maintain and repair the Sites and/or
to allow other lessees to install, remove, maintain and repair their equipment,
it may be necessary from time to time for Lessor to turn off electrical power
and/or make other adjustments to the Sites and/or any equipment related
thereto; Lessor agrees to use commercially reasonable efforts to coordinate
such work with Lessee and to schedule such work so as to cause minimal
disruption to Lessee's Equipment and use of the Lessee's Space as contemplated
herein. Lessor shall not be liable to Lessee for interruption of or
interference with Lessee's operations or with Lessee's use of the Lessee's
Space as contemplated herein, unless due to the negligence or willful
misconduct of Lessor. In the event that maintenance and/or repairs to a Site
are required as a result of the installation or operations of the Lessee's
Equipment and/or Site Work, the same shall be performed by a qualified
contractor selected by Lessor and the expense charged to the Lessee, who shall
pay such expense within fifteen (15) days thereof.

         7.       Insurance. (a) Lessee will require contractors performing
work at any Site in any capacity which requires climbing any Tower to carry
umbrella/excess liability insurance in excess of the business automobile,
commercial general liability and worker's compensation of a minimum of each
occurrence limit of Five Million Dollars ($5,000,000) and general aggregate of
Five Million Dollars ($5,000,000).

                  (b) Lessee shall keep in full force and effect with a company
licensed to do business in each state where a Site is located and which has a
rating of A- or better from the current edition of Best's Insurance Reports, at
Lessee's expense at all times during the Term and during any other times as
Lessee studies, inspects, or uses the Site or any part thereof: (i) commercial
general liability insurance written on an occurrence basis with respect to the
Site and Tower and Lessee's use and occupancy thereof and the business operated
by Lessee with limits of at least Two Million Dollars ($2,000,000) per
occurrence and Five Million Dollars ($5,000,000) in the aggregate, which
liability insurance shall, in addition, extend, through contractual liability
insurance, to any liability of Lessee arising out of the indemnities provided
in this Agreement, (ii) worker's compensation and employer's liability
insurance affording applicable statutory coverage and containing applicable
statutory limits; (iii) automobile liability insurance with limits of at least
One Million Dollars ($1,000,000) per occurrence and Three Million Dollars
($3,000,000) in the aggregate, and (iv) fire insurance with standard broad form
extended coverage and full replacement cost endorsements covering all of
Lessee's property at the Site. All of such policies shall provide that Lessee
shall be responsible for all deductibles, exclusions, and co-insurance under
such coverages, shall name Lessor, its agents, employees, officers, directors
and affiliates as an additional insured or loss payees, shall provide that the
insurance provided by such policies is primary coverage, and shall provide
thirty (30) days prior written notice to Lessor of any cancellation,
expiration, or non-renewal of such policy. Lessor (and Lessor's agents,




                                       4


<PAGE>   5


employees, officers, directors and affiliates) shall not be liable to Lessee
for the safety or security of each Site, Lessee's Equipment thereon or other
property.

                  (c) Lessor, at Lessor's sole cost and expense, shall procure
and maintain on each Site, commercial general liability insurance with a
combined single limit of Two Million Dollars ($2,000,000) in the aggregate.
Such insurance shall insure, on an occurrence basis, against liability of
Lessor, its employees and agents arising out of or in connection with Lessor's
use, occupancy and maintenance of the Site. Lessee shall be named as an
additional insured on Lessor's policy.

                  (d) Lessor and Lessee release each other and their respective
principals, officers, directors, employees, representatives and agents, from
any claims for damage to any person or to the Site or to the Lessee's Equipment
or operations thereon caused by, or that result from, risks insured against
under any insurance policies carried by the parties and in force at the time of
any such damage. Each party shall provide to the other either an insurance
certificate or binder evidencing the coverage required by this paragraph within
thirty (30) days of the Commencement Date.

         8.       Intentionally Omitted.

         9.       Events of Default. The following shall constitute an event of
default of this Agreement ("Event of Default"): (i) any failure to comply with
any covenant, condition or agreement of this Agreement not otherwise addressed
in this Paragraph 9; provided, however, neither party shall be deemed to be in
default under this subsection (i) until the non-breaching party has given the
breaching party thirty (30) days (or ten (10) days in the event of a monetary
breach) written notice of and opportunity to cure any breach (except where a
different timeframe is expressly provided in this Agreement,) and the breaching
party has failed to cure the same, provided, however, Lessor shall have the
right at any time to cure an ongoing breach in the event of an emergency, as
shall be interpreted in Lessor's reasonable discretion; or (ii) if Lessee shall
(a) apply for or consent to the appointment of a receiver, trustee or
liquidator of itself or any of its property, (b) be adjudicated bankrupt or
insolvent, (c) file a voluntary petition or have an involuntary petition filed
against Lessee which is not discharged within 60 days in bankruptcy; or (d)
consent to, approve of or acquiesce in any such proceeding or the appointment
of any receiver of or trustee for any of its property, or proceeding to
continue undischarged for a period of sixty (60) days.

         10.      Remedies. Upon the occurrence of an Event of Default at or
relating to a Site by Lessee or other termination hereunder due to an act or
omission of Lessee,


                                       5

<PAGE>   6


and in addition to such other rights and remedies as may be available under
this Agreement, at law or in equity, Lessor shall be entitled to all costs and
expenses (including attorneys' fees) incurred by Lessor as a result of such
default and shall have the following rights and remedies: (i) dispossess Lessee
and remove all of Lessee's property from such Site, (ii) terminate this
Agreement as to such Site, (iii) store Lessee's Equipment and Lessee's other
property located at such Site in a public warehouse or elsewhere at the cost,
risk and expense of Lessee, without Lessor being deemed a trespasser or
becoming liable for any loss or damage that may occur to Lessee's Equipment
and/or property, and/or (v) enter into one or more agreements with third
parties for the use of some or all or the Tower Space at such Site for all or
any part of the Term remaining. Any and all remedies available to Lessor under
this Agreement are cumulative and not exclusive. Notwithstanding anything
contained herein to the contrary, Lessor waives any lien rights it may have
concerning Lessee's Equipment at any Site which are deemed Lessee's personal
property and not fixtures, and Lessee has the right to remove the same at any
time without Lessor's consent. Notwithstanding anything herein to the contrary,
in no event shall Lessor have as a remedy under this Agreement, or in law or
equity, the right to accelerate the payment of Annual Rent.

         11.      Utilities.  Lessee shall meter separately at Lessee's expense
and pay directly to the utility or service company provider promptly when due
the cost of all electric power, telephone or other utilities consumed by Lessee
or Lessee's Equipment.

         12.      Impositions.  Lessor shall pay all impositions applicable to
the Site other than for personal property taxes assessed on Lessee's Equipment.
Lessee shall pay all sales or use taxes applicable to payments made under this
Agreement  or as a direct result of Lessee's equipment being located on the
Premises.

         13.      Environmental Provisions.  (a) Lessee agrees that it will not
use, generate, store or dispose of any Hazardous Material on, under, about or
within any Site in violation of any law or regulation.

                  (b) Lessor represents, warrants and agrees (i) that, to
Lessor's knowledge neither Lessor nor any third party has used, generated,
stored or disposed of, or permitted the use, generation, storage or disposal
of, any Hazardous Material on, under, about or within any Site in violation of
any law or regulation, and (ii) that Lessor will not, and will not knowingly
permit any third party to use, generate, store or dispose of any Hazardous
Material on, under, about or within any Site in violation of any law or
regulation.


                                       6

<PAGE>   7



                  (c) Each party agrees to defend, indemnify and hold harmless
the other and the other's partners, affiliates, agents and employees against
any and all losses, liabilities, claims and/or costs (including reasonable
attorneys' fees and costs) arising from any breach of any representation,
warranty or agreement contained in this Paragraph 13. As used in this Paragraph
13, "Hazardous Materials" means any toxic substance as defined in 15 U.S.C.
Sections 2601 et seq. on the date hereof, including materials designated on the
date hereof as hazardous substances under 42 U.S.C. Sections 9601 et seq. or
other applicable laws, and toxic, radioactive, caustic, or otherwise hazardous
substances, including petroleum and its derivatives, asbestos, PCBs,
formaldehyde, chlordane and heptachlor. This paragraph shall survive the
termination of this Agreement.

         14.      Non-interference. (a) Lessee's installation, maintenance and
operation of Lessee's Equipment (if any) at a Site shall not interfere with
operations or use of, or cause signal interference at such Site to Lessor or to
any Lessees or other users having rights to such Site (whether or not such
Lessees or other users have installed and including, without limitation,
persons in negotiations with Lessor for use of such Site) on or before the full
execution of this Agreement. In the event that Lessee's operations cause such
interference, Lessee agrees to cure the interference or cease using the
equipment which is causing the interference (except for brief tests necessary
for the elimination of the interference) within forty-eight (48) hours after
notice thereof, and Lessee further agrees to thereafter eliminate any such
interference caused by Lessee's Equipment in a prompt or timely manner, not to
exceed fifteen (15) days after the initial notice thereof. Lessor reserves the
right to disconnect Lessee's Equipment at such Site if, following the
above-referenced notice by Lessor, Lessee fails to either cure the interference
or cease using the equipment within the forty-eight (48) hours set forth above.

                  (b) Lessee shall continue to be obligated to pay rent, and
Lessor shall not be held liable for any damages or loss of revenues. Provided
Lessee's equipment is operating properly, if the operations of any equipment
installed after Lessee's equipment cause objectionable interference to Lessee's
operation, then Lessor shall require the interfering lessee to remedy the
interference and bear the costs thereof.

                  (c) Lessee shall also have a non-exclusive seven (7) day per
week, twenty-four (24) hour per day right of access over right of ways
designated by Lessor (which may be changed by Lessor, in its sole discretion)
to the Tower Space at each Site during the Term hereof, provided that such
access shall be subject to such reasonable site rules and regulations as Lessor
may prescribe from time to time and further provided that such access shall be
solely for the purpose of



                                       7

<PAGE>   8


installing, maintaining, repairing, and removing Lessee's Equipment). Lessee's
right to use the Tower Space and any Site shall be subject to the rights of
others to pass by and through the Tower Space to service such Site and any
other equipment on such Site. Lessee's Equipment shall be configured on and
attached to each Site in a manner that shall permit such reasonable passage by
and through the Leased Premises at all times.

         15.      Binding Obligations. Lessor represents and warrants to Lessee
that this Agreement has been duly and validly executed and delivered by Lessor
and constitutes Lessor's legal, valid and binding obligation, enforceable
against Lessor in accordance with its terms. Lessee represents and warrants to
Lessor that this Agreement has been duly and validly executed and delivered by
Lessee and constitutes Lessee's legal, valid and binding obligation,
enforceable against Lessee in accordance with its terms. This Agreement shall
be binding on and inure to the benefit of the successors and assignees of the
respective parties permitted hereunder.

         16.      Indemnification. (a) Lessee shall indemnify, defend and save
harmless Lessor and its officers, directors, employees, affiliates and agents
from and against all liabilities, obligations, claims, damages, penalties,
causes of action, costs and expenses, including, without limitation, attorneys'
fees and expenses, imposed upon or incurred by or asserted against Lessor by
reason of any (i) occurrence, injury to or death of persons (including workmen)
or loss of or damage to property at a Site resulting from Lessee's Equipment or
arising from any conduct of Lessee or Lessee's officers, employees, agents,
contractors, and subcontractors, or employees of any thereof; (ii) use, non-use
or condition of Lessee's Equipment, (iii) failure on the part of Lessee to
perform or comply with any of the terms hereof, or applicable law, (iv)
performance of any maintenance, repair, removal, or replacement regarding
Lessee's Equipment, or (v) damage or destruction to, or interference with the
use or operation of, any property of any other person on a Site attributable to
Lessee's Equipment, or the operation thereof or arising from any conduct of
Lessee, or Lessee's officers, employees, agents, contractors, and
subcontractors, or employees of any thereof; provided, however, that Lessee
shall not indemnify, defend or save harmless Lessor for matters caused by the
gross negligence or willful misconduct of Lessor or its agents or employees.

                  (b) Lessor shall exonerate, hold harmless, indemnify, and
defend Lessee from and against any and all liabilities, damages, costs and
expenses arising out of or resulting from the acts or omissions of Lessor, its
agents, representatives or subcontractors at a Site; provided, however, that
Lessor shall not indemnify, defend or save harmless Lessee for matters caused
by the gross negligence or willful misconduct of Lessee or its agents or
employees.



                                       8

<PAGE>   9

         17.      Estoppel Certificate; Other Statements. From time to time,
within fifteen (15) days after request by Lessor or Lessee, the other party
shall execute, acknowledge and deliver to the requesting party or its current
or prospective lenders, purchasers, successors, affiliates and/or permitted
assigns, a statement in writing ("Estoppel Certificate") concerning this
Agreement and the applicable Site set forth in said notice and certifying the
Commencement Date, the expiration date of this Agreement, that the requesting
party is not in default under this Agreement except as specified in such
statement, that this Agreement is unmodified and in full force and effect (or,
if modified, describing such modification(s)), the dates to which the Annual
Rent has been paid, and setting forth such other statements relating to the
delivery of the Lessee's Space at such Site as such lenders, purchasers,
successors or permitted assigns may reasonably require. In addition to the
foregoing, Lessee shall from time to time, promptly upon Lessor's request,
furnish to Lessor or its current or prospective lenders, purchasers,
successors, affiliates and/or assigns, financial statements (including an
income statement, balance sheet, and statement of cash flow, prepared in
accordance with generally accepted accounting principles applied on a
consistent basis) and such other information as Lessor may reasonably request
regarding Lessee's financial condition. The Estoppel Certificate and other
statements required in this Paragraph 17 shall each be accurate and binding on
the party executing and/or delivering the same and may be relied upon by any
such person herein described at whose insistence the same was prepared and/or
delivered.

         18.      Waivers of Claims, Limitation of Liability. (a) Lessor and
Lessee hereby waive to the fullest extent permitted by law all claims to
special, incidental, consequential and punitive damages (including, without
limitation, lost profits) in any lawsuit or other legal action brought by any
of them against any other of them in respect of any claim among or between any
of them arising under this Agreement, or any other agreement or agreements
between them at any time, including any such agreements, whether written or
oral, made or alleged to have been made at any time prior to the date hereof,
and all agreements made hereafter or otherwise, and any and all claims arising
under common law or under any statute of any state or the United States of
America, whether any such claims be now existing or hereafter arising, now
known or unknown. In making this waiver, each of Lessor and Lessee acknowledge
and agree that there shall be no claims for special, incidental, consequential
or punitive damages made by them against the other. Lessor and Lessee
acknowledge and agree that this waiver of claims for special, incidental,
consequential damages and punitive damages is a material element of the
consideration for this Agreement.

                  (b) Notwithstanding any provision to the contrary contained
in this Agreement, (including, without limitation, in Section 13(c) and 16(a)),
and except as to Lessee's officers, employees, agents, contractors, and
subcontractors, in no event


                                       9

<PAGE>   10



shall Lessee have any liability to Lessor under this Agreement or otherwise
arising in connection with any act or omission of any third party (including,
without limitation, any subtenant).

         19.      Mechanics Liens. Lessee shall keep each Site and Lessee's
Space thereon free from any mechanic's, materialmen's or similar liens in
connection with any Lessee work on or respecting the Lessee's Space and/or Site
and shall indemnify and hold Lessor harmless from and against any claims,
liabilities, judgments, or costs (including attorneys' fees) arising out of the
same or in connection therewith. Lessee will remove any such lien within ten
(10) days after written notice by Lessor or, in the event of a dispute, notify
Lessor of the nature of the dispute and post a bond and if Lessee fails to do
so, Lessor may pay the amount necessary to remove such lien or encumbrance,
without being responsible for investigating the validity thereof, and the
amount so paid will be deemed an additional charge to be paid by Lessee
hereunder upon demand.

         20.      Mortgages. This Agreement is subject and subordinate to all
Mortgages (as defined below) now or hereafter placed upon a Site by Lessor, and
to the provisions of any easement, operating agreement, declaration,
restrictive covenant, and all other encumbrances and matters of public record
applicable to the land related thereto. Any Holder (as defined below) may elect
to make this Agreement prior to the lien of its Mortgage, by written notice to
Lessee and Lessee shall execute such documentation as Lessor or any Holder may
reasonably request from time to time, in order to confirm the matters set forth
in this Paragraph. If any foreclosure proceedings regarding a Site are
initiated by any Holder or if any mortgage or deed in lieu is granted or any
ground lease is terminated, Lessee agrees, upon written notification of any
such Holder, mortgagee or purchaser at foreclosure sale, to attorn to such
party and to execute and deliver any instruments necessary or appropriate to
evidence or effectuate such attornment (and such Holder, mortgagee or purchaser
shall agree to accept this Agreement and not disturb Lessee's occupancy, so
long as Lessee does not default under this Agreement). In the event of
attornment, provided that Lessee has received prior notice of the identity and
address of the Holder, no Holder shall be: (i) liable for any act or omission
of Lessor, or subject to any offset or defense which Lessee might have against
Lessor of which Holder has not been given notice by Lessee (prior to such
Holder becoming lessor), or (ii) bound by any future modification of this
Agreement unless consented to by such Holder. "Mortgage" means all mortgages,
deeds of trust, ground leases and other such encumbrances now or hereafter
placed upon a Site or any part thereof, and all renewals, modifications,
consolidations, replacement or extensions thereof, and all indebtedness now or
hereafter secured thereby and all interest therein. "Holder" means the holder
of any Mortgage at the time in question, and where such Mortgage is a ground
lease, such term shall refer to the ground lease.


                                       10

<PAGE>   11


         21.      Attorneys' Fees. If any action at law or in equity is
necessary to enforce the terms of this Agreement, the prevailing party will be
entitled to reasonable attorneys' fees, in addition to any other relief to
which such prevailing party may be entitled.

         22.      Entire Agreement. Lessor and Lessee represent to each other
that this Agreement is the complete and exclusive expression of their
agreements regarding the matters contemplated herein, and all prior agreements,
statements, and representations, whether written or oral, which relate in any
way to the matters contemplated herein are hereby superseded and shall be given
no force and effect, and that no promise, inducement, or representation has
been made to either of them which relates in any way to this Agreement, other
than what is expressly stated in this Agreement. This Agreement may not be
changed, modified or amended except by written instrument signed by both
parties hereto.

         23.      Waiver of Jury Trial. Each party to this Agreement hereby
waives to the fullest extent permitted by law, all right to trial by jury of
any and all claims arising under or relating to this Agreement or the Site.
Each party acknowledges that this is a waiver of a legal right and that this
waiver of jury trial is made by such party knowingly and voluntarily after
consultation with (or after the full opportunity to consult with) counsel of
such party's choice.

         24.      Notices. Any notice, consent, demand, request, approval, or
other communication to be given under this Agreement by any party to any other
party shall be in writing and shall be either (a) personally delivered, (b)
mailed by registered or certified mail, postage prepaid with return receipt
requested, (c) delivered by overnight express delivery service or same-day
local courier service, or (d) delivered by telex or facsimile transmission, to
the address set forth below, or to such other address as may be designated by
the parties from time to time in accordance with this Section 24.

       If to Lessee:               Microcell Management, Inc.
                                   c/o LCC International, Inc.
                                   7925 Jones Branch Drive
                                   McLean, Virginia 22102
                                   Attention:  Christopher J. Davis
                                   Fax No. (703) 873-2900

       If to Lessor:               Pinnacle Towers Inc.
                                   1549 Ringling Boulevard, 3rd Floor
                                   Sarasota, Florida  34236
                                   Attention:  Bernard Gaboury
                                   Fax No. (941) 364-8761


                                       11

<PAGE>   12


         Notices delivered personally, by overnight express delivery service or
by local courier service shall be deemed given as of actual receipt. Mailed
notices shall be deemed given three business days after mailing. Notices
delivered by telex or facsimile transmission shall be deemed given upon receipt
by the sender of the answerback (in the case of a telex) or transmission
confirmation (in the case of a facsimile transmission).

         25.      Assignment/Sublease. Neither this Agreement nor any right
created hereby shall be assignable by either party hereto, except by Lessor to
a direct or indirect wholly owned subsidiary of Lessor, which assignment shall
not relieve Lessor of any liability under this Agreement; provided that (i)
Lessee may assign all or any portion of its right hereunder to LCC
International, Inc., a Delaware corporation and Lessee's parent ("LCC") or any
Affiliate thereof (which in turn may assign all or any portion of its
respective rights hereunder to any other Affiliate of LCC) and (ii) Lessee
(and, following an assignment of its rights hereunder to LCC, LCC) may assign
all or any portion of its respective rights hereunder in connection with a
merger, consolidation or sale of substantially all its assets or to any lender
as security for a loan; provided that no such assignment by Lessee shall
release Lessee from its obligation to pay to Lessor the Annual Rent, for which
Lessee shall remain liable, jointly and severally, with its assignee. Lessee
shall not sublease all or any portion of the Leased Premises without Lessor's
prior written consent which consent shall not be unreasonably withheld,
conditioned or delayed. Lessor shall not withhold, condition or delay its
consent provided that the following conditions are satisfied:

                           (i)      Lessee shall notify Lessor, in writing, of
any proposed sublease, at least thirty (30) days prior to the effective date of
such proposed sublease. The proposed subtenant shall have a creditworthiness
which is reasonably acceptable to Lessor.

                           (ii)     The sublease shall be for a term of no less
than the remainder of the Term and shall be for a fair market value rental.

                           (iii)    The sublease shall be on substantially the
same terms as Lessor's standard Lease form (or such other terms as are
reasonably acceptable to Lessor).

                           (iv)     The subtenant is not (and will not be)
terminating a lease on another tower owned by Lessor located within a 40 mile
radius of the Tower to which such proposed sublease relates in order to enter
into such sublease.



                                       12

<PAGE>   13


                           (v)      The subtenant agrees to be bound by
Lessee's obligations hereunder as to the space being leased under such sublease
(except payment of rent to Lessor) as if a direct lease were made between
Lessor and Subtenant.

         26.      Inclusion and Exclusion of Sites: (a) If, as of the
Commencement Date, Lessor has not acquired from Lessee under the APA a tower
site listed on Schedule A, such tower site shall not be a "Tower" or "Site"
subject to this Agreement and shall not become a "Tower" or "Site" subject to
this Agreement unless and until Lessor so acquires such tower site.

                  (b) If, following the Commencement Date, Lessor acquires from
Lessee under the APA an additional tower site listed on Schedule A, then, from
and after the closing date for such acquisition, such tower site shall become
and be a "Tower" and a "Site" subject to this Agreement for all purposes
hereunder,

                  (c) If, following the Commencement Date, Lessor transfers,
assigns or otherwise is divested of title to a Tower, whether voluntarily or
involuntarily, then, from and after the effective date of such divestiture of
title, such Tower shall cease to be a "Tower" or a "Site" subject to the terms
of this Agreement.

                  (d) Notwithstanding anything to the contrary herein, Lessor
and Lessee acknowledge and agree that the Annual Rent due hereunder for each of
calendar year 2000, 2001 or 2002 shall be adjusted, if and as required, so that
such amount is the sum of the annual rent amounts set forth on Schedule A for
each and every, but only, those Towers subject to this Agreement in accordance
with this Section 26 as of December 31 of such calendar year.

         27.      Counterparts. This Agreement may be executed in any number of
counterparts, each of which where so executed and delivered shall be an
original, but all of which shall constitute one and the same instrument.

         28.      Governing Law. This Agreement shall be governed by the law of
the State of Florida.

         29.      Miscellaneous. Captions are for convenience of reference only
and shall not be used for interpreting the provisions of this Agreement. If any
provision hereof is invalid or unenforceable with respect to any party, the
remainder hereof or the application of such provision to persons other than
those as to whom it is held invalid or unenforceable shall not be affected, and
each provision hereof shall be valid and enforceable to the fullest extent
permitted by law. The indemnity provisions in this Agreement shall survive the
termination of this Agreement. There shall be no third party beneficiaries of
this Agreement. Time is of the essence of



                                       13



<PAGE>   14



this Agreement; provided however, neither party shall be liable for any delay
in performance of any obligations hereunder (excluding obligations for the
payment of money) due to fire, flood, earthquake, tornado, windstorm or other
act of God.

                         [SIGNATURES ON FOLLOWING PAGE]



                                       14



<PAGE>   15


         IN WITNESS WHEREOF, and intending to be legally bound hereby, the
undersigned parties execute this Agreement under seal the day and year first
above written.

                                              LESSOR:
                                              ------

                                              PINNACLE TOWERS INC.,
                                              a Delaware corporation

                                              By:
                                                 ------------------------------
                                              Name:
                                                   ----------------------------
                                              Title:
                                                    ---------------------------


                                              LESSEE
                                              ------

                                              MICROCELL MANAGEMENT, INC.,
                                              a Delaware corporation

                                              By:
                                                 ------------------------------
                                              Name:
                                                   ----------------------------
                                              Title:
                                                    ---------------------------




                                       15



<PAGE>   1
                                                                    EXHIBIT 99.1

FOR IMMEDIATE RELEASE

LCC Contact: Tricia Drennan                 Pinnacle Contact: Stephen R. Wolsey
Corporate Communications &                  Public Relations &
Investor Relations                          Investor Relations
(703) 873-2390 (phone)                      (941) 364-8886 (phone)
[email protected]                      [email protected]


            LCC INTERNATIONAL, INC SELLS TOWER PORTFOLIO TO PINNACLE
                                 FOR $80 MILLION

              LCC ANNOUNCES TOWER MANAGEMENT OUTSOURCING CAPABILITY

           RECEIVES $55 MILLION TOWER SERVICES CONTRACT FROM PINNACLE


MCLEAN, VIRGINIA AND SARASOTA, FLORIDA-- February 25, 2000 LCC International,
Inc. (NASDAQ: LCCI), one of the world's largest wireless telecommunications
consulting firms and Pinnacle Holdings Inc. (NASDAQ: BIGT), a leading provider
of wireless communications site rental space, announced that they have entered
into a definitive agreement for LCC's tower subsidiary, Microcell Management,
Inc., to sell up to 197 communication tower sites to Pinnacle Towers Inc., a
wholly owned subsidiary of Pinnacle Holdings. The cash deal, valued at
approximately $80 million, subject to adjustments for the number of towers
conveyed, closing prorations and sale lease-back adjustments, is expected to
close by the end of the first quarter of 2000.

The towers to be sold are primarily located in North Carolina, South Carolina,
Illinois, Indiana, Texas and Virginia. The portfolio will expand Pinnacle
Tower's growing presence throughout the United States and will enhance its
existing tower clusters. Sites currently under construction, approximately 26
towers, will be completed by LCC pursuant to existing built-to-suit arrangements
prior to conveyance to Pinnacle.


<PAGE>   2


LCC SELLS TOWER PORTFOLIO TO PINNACLE -- 2/2/2

In addition to the tower sale, LCC announced a tower maintenance outsourcing
capability that will assist tower owners and wireless operators in the
management of their tower and rooftop portfolios and provide strategic
build-to-suit services. In conjunction with Pinnacle's purchase of the LCC
towers, the two companies have entered into a five-year tower services agreement
valued at approximately $55 million subject to annual adjustments and reviews.
LCC will provide audit services for existing and new tower sites, routine site
maintenance services, and program management services to manage site
improvements and capacity upgrades. The program is designed to rapidly bring the
tower sites in line with Pinnacle's site quality standards, and transfers the
responsibility for ongoing tower management and maintenance to LCC.

C. Thomas Faulders III, LCC's Chairman and Chief Executive Officer said, "In
addition to providing significant value to our shareholders through the sale of
our tower portfolio we have created a way for both LCC and Pinnacle to better
leverage their core strengths. Through this unique tower services contract,
Pinnacle will be able to increase its focus on the expansion and lease-up of its
portfolio while receiving quality maintenance and build services at bulk
pricing. In return, the Company will leverage its experienced team of
deployment, tower ownership and management professionals into a new tower
services business."

Robert J. Wolsey, chairman and chief executive officer of Pinnacle comments,
"The acquisition of the LCC portfolio further strengthens our expanding national
footprint. The towers in the LCC portfolio are attractive for a number of
reasons: the majority of the towers are strategically located in conjunction
with existing Pinnacle tower clusters which enables us to better serve a broader
range of our customers' needs, the sites have been well maintained and managed
and have attractive leasing arrangements, thereby complying with our strict
acquisition criteria, and the customer base that LCC has attracted is
complementary to our portfolio thus providing an opportunity to further expand
relationships with the carrier tenants. The tower services agreement awarded to
LCC is very strategic to our ability to focus on our core business - increasing
our portfolio's profitability. We look forward to a long and prosperous
relationship with LCC."

Faulders continued, "We will use the proceeds of the tower sale to pay off
existing indebtedness, to invest in recruiting, employee development and overall
operational enhancements to fuel the


<PAGE>   3

tremendous growth we are experiencing, look for acquisition opportunities to
expand our core services capabilities and to better leverage our overseas tower
development capabilities."

LCC SELLS TOWER PORTFOLIO TO PINNACLE -- 3/3/3

A first of its kind outsourcing service, LCC's new Tower Management business
will provide wireless operators and communications site owners with the
comprehensive management services necessary for the day to day maintenance of
their tower portfolio. By optimizing the scheduling and time of these
disciplines, LCC offers cost savings to wireless operators and tower owners in
the management of their communication site portfolios. LCC's Tower Management
services include:

- -    Site Audit Services: LCC will audit tower sites to identify deviations from
     pre-established site quality standards and regulatory requirements and will
     manage the resolution of all deficiencies found.

- -    Maintenance Services: LCC will perform and or manage among other things,
     periodic tower inspections, including EIA/TIA audit inspections, site
     repairs and pre-installation walk throughs with tenants.

- -    Co-location Support Services: LCC will provide technical, structural,
     construction and regulatory support in connection with tenant site
     co-location and installations.

- -    Project Management Services: LCC will provide project specific services,
     including Program Management for build-to-suit projects and tower rebuilds,
     site acquisition, construction management and other deployment services
     within LCC's area of expertise.

In addition, LCC will continue to pursue strategic build-to-suit service
relationships with its clients to enhance traditional network design and
deployment services.

Christopher Davis, president of LCC's towers subsidiary, said, "It is very
rewarding to be able to launch a new business and immediately announce such a
significant contract with an industry leader. This type of service is a
classical outsourcing model highlighting the benefits of the cost savings that
can be derived from centralized management and critical mass. The turn-key
services offered under this new program are unique to the wireless industry.
They incorporate overall program management of the disciplines and information
required to maintain a portfolio of tower sites. By adhering to a strict set of
site quality standards and managing the service logistics, we can deliver
timely, accurate and complete information for co-location efforts by the site
owner, and significantly reduce ongoing maintenance and operating costs for the
site

<PAGE>   4

portfolio. Plus, our ability to be technology, service and vendor neutral
puts us in the advantageous position of being able to provide these valuable
services to any tower management or wireless service company that owns its own
towers."

LCC SELLS TOWER PORTFOLIO TO PINNACLE -- 4/4/4

As part of the sale, LCC has executed a settlement and redemption agreement with
the minority shareholders of Microcell Management, Inc. Under the agreement, at
the initial closing of the Pinnacle deal, the Company will buy the minority
shareholder's interest in Microcell (including the new tower services business)
and all claims between the parties and all pending litigation will be released.

Statements included in this news release which are not historical in nature are
forward-looking statements made pursuant to the safe harbor provisions of the
Private Securities Litigation Reform Act of 1995 including, without limitation,
statements regarding the ability to obtain financing, the hiring of new
personnel, increasing demand for the type of services the Company provides, the
Company's ability to secure new business, the Company's ability to obtain third
party consents required to convey its towers to Pinnacle, the conformity of the
tower sites to the title, survey and related standards required by Pinnacle, the
ability of the Company to complete construction on a portion of the sites being
conveyed to Pinnacle, the Company's ability to meet performance objectives under
the Pinnacle Services contract, and those factors highlighted in LCC
International, Inc.'s Annual Reports on Form 10-K and Quarterly Reports on Form
10-Q, which could cause the Company's actual results to materially differ from
forward-looking statements made by the Company.

LCC International, Inc. (http://www.lcc.com) is one of the world's largest
suppliers of integrated end to end infrastructure services to the wireless
telecommunications industry. A leader in the industry since 1983, LCC has
performed technical services for the largest wireless operators in North and
South America, Europe, The Middle East, Africa and Asia. The Company has worked
with all major access technologies and has participated in the design,
deployment, optimization and maintenance of some of the largest and most
sophisticated wireless systems in the world. By combining technical consulting
and tower ownership and management LCC is unique in its ability to provide
comprehensive turn-key services to wireless operators around the world.


<PAGE>   5

Pinnacle is a leading provider of wireless communications site rental space in
the United States. To date, the Company has completed over 345 acquisitions and
upon completion of all pending acquisitions will own or manage over 4080 sites.
Pinnacle is headquartered in Sarasota, Florida. For more information on Pinnacle
visit its Web site at http://www.pinnacletowers.com.

                                      # # #


<PAGE>   1
                                                                    EXHIBIT 99.2

FOR IMMEDIATE RELEASE                              Contact: Tricia Drennan
                                                   Corporate Communications &
                                                   Investor Relations
                                                   (703) 873-2390 (phone)
                                                   [email protected]


           LCC INTERNATIONAL, INC. ANNOUNCES CLOSE ON FIRST TRAUNCH OF
                     TOWERS SOLD TO PINNACLE HOLDINGS, INC.

MCLEAN, VIRGINIA -- March 6, 2000 LCC International, Inc. (NASDAQ: LCCI), one of
the world's largest wireless telecommunications consulting firms today announced
that it has completed the first closing of the previously announced tower sale
transaction with Pinnacle Holdings, Inc. The transaction included 134 of the 197
towers sold under an Agreement with Pinnacle announced on February 25, 2000.
This initial closing is valued at approximately $56 million in cash. The
remaining 63 towers, including 26 under construction, are expected to close
periodically throughout 2000.

Statements included in this news release which are not historical in nature are
forward-looking statements made pursuant to the safe harbor provisions of the
Private Securities Litigation Reform Act of 1995 including, without limitation,
statements regarding the ability to obtain financing, the hiring of new
personnel, increasing demand for the type of services the Company provides, the
Company's ability to secure new business, the Company's ability to obtain third
party consents required to convey its towers to Pinnacle, the conformity of the
tower sites to the title, survey and related standards required by Pinnacle, the
ability of the Company to complete construction on a portion of the sites being
conveyed to Pinnacle, the Company's ability to meet performance objectives under
the Pinnacle Services contract, and those factors highlighted in LCC
International, Inc.'s Annual Reports on Form 10-K and Quarterly Reports on Form
10-Q, which could cause the Company's actual results to materially differ from
forward-looking statements made by the Company.



<PAGE>   2


LCC CLOSES ON FIRST TRAUNCH OF TOWERS SOLD TO PINNACLE -- 2/2/2

LCC International, Inc. (http://www.lcc.com) is one of the world's largest
suppliers of integrated end to end infrastructure services to the wireless
telecommunications industry. A leader in the industry since 1983, LCC has
performed technical services for the largest wireless operators in North and
South America, Europe, The Middle East, Africa and Asia. The Company has worked
with all major access technologies and has participated in the design,
deployment, optimization and maintenance of some of the largest and most
sophisticated wireless systems in the world. By combining technical consulting
and tower management and maintenance services LCC is unique in its ability to
provide comprehensive turn-key services to wireless operators around the world.

                                      # # #







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