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Exhibit 10.26

FIRST AMENDMENT TO
MASTER TOWER SPACE RESERVATION AND LICENSE AGREEMENT AND TO
MASTER TOWER SPACE LICENSE AGREEMENT

        THIS FIRST AMENDMENT TO MASTER TOWER SPACE RESERVATION AND LICENSE
AGREEMENT AND TO MASTER TOWER SPACE LICENSE AGREEMENT ("First Amendment") is
entered into and made effective as of the latter signature date hereof (the
"Effective Date") by and between AMERICAN TOWERS,  L.P., a Delaware limited
partnership ("American Tower"), AMERICAN TOWERS, INC., a Delaware corporation
("ATI"), iPCS WIRELESS, INC., a Delaware corporation ("iPCS") and HORIZON
PERSONAL COMMUNICATIONS, INC., an Ohio corporation ("Horizon").

RECITALS

A.American Tower and iPCS entered into that certain Master Tower Space
Reservation and License Agreement dated July 20, 2002 (the "MLA"), pursuant to
which American Tower licenses to iPCS space on communication towers and ground
space then owned or operated by American Tower and/or its affiliates.

B.American Tower owns, leases, subleases, or has other property interests in
Communications Towers, as defined in the MLA.

C.ATI and Horizon entered into that certain Master Tower Space License Agreement
dated June 1, 2001 ("ATI/Horizon MLA").

D.American Tower and iPCS desire to extend the term of the MLA through
December 31, 2007.

E.ATI and Horizon desire to make a change to the terms of the ATI/Horizon MLA,
as more specifically set forth herein.

        NOW, THEREFORE, in consideration of the mutual covenants contained
herein, the receipt and sufficiency of which is hereby acknowledged, American
Tower, ATI, iPCS and Horizon agree to the following:

1.MLA Term.    Effective as of February 18, 2005, Section 4.1 of the MLA is
hereby amended by deleting the first sentence thereof and replacing such
sentence with the following:

"The term of this Agreement (the "Term") shall commence on the date first
written above ("Effective Date") and, unless terminated earlier in accordance
with Section 5, shall continue until December 31, 2007."

2.Acknowledgment of Affiliates.    ATI and Horizon hereby acknowledge that as of
the Effective Date, the following entity qualifies as an Affiliate of Horizon
under the ATI/Horizon MLA: Bright Personal Communications Services, LLC, an Ohio
limited liability company.

3.Entirety; Amendment.    This First Amendment, together with the MLA and the
ATI/Horizon MLA, constitutes the entire agreement among the undersigned parties
hereto. Any modification to this First Amendment must be in writing and signed
and delivered by authorized representatives of the affected parties in order to
be effective.

4.Binding Effect.    Except as modified by this First Amendment, the MLA and the
ATI/Horizon MLA, and all the covenants, agreements, terms, provisions and
conditions thereof shall remain in full force and effect and are hereby ratified
and affirmed. The covenants, agreements, terms, provisions and conditions
contained in this First Amendment shall bind and inure to the benefit of the
parties hereto and their respective successors and assigns. In the event of any
conflict between the terms contained in this First Amendment and either the MLA
or the ATI/Horizon MLA, the terms herein contained shall supersede and control
the obligations and liabilities of the parties.

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5.Capitalized Terms.    Capitalized terms not defined herein shall have the
meanings ascribed thereto in the MLA and the ATI/Horizon MLA, as applicable.

6.Counterparts; Scanned.    This First Amendment may be executed in any number
of counterparts, each of which shall be an original, but all of which taken
together shall constitute one instrument. The parties agree that a scanned or
electronically reproduced copy or image of this First Amendment bearing the
signatures of the parties hereto shall be deemed an original and may be
introduced or submitted in any action or proceeding as a competent evidence of
the execution, terms and existence of this First Amendment notwithstanding the
failure or inability to produce or tender an original, executed counterpart of
this First Amendment and without the requirement that the unavailability of such
original, executed counterpart of this First Amendment first be proven.

7.Authority.    Each party hereto represents and warrants to the other that all
necessary corporate authorizations required for execution and performance of
this First Amendment have been given and that the undersigned officer of a party
is duly authorized to execute this First Amendment and bind the party for which
it signs.

        [Remainder of Page Intentionally Left Blank]

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        IN WITNESS WHEREOF, the parties have each executed this First Amendment
as of the dates written below.

AMERICAN TOWERS, L.P.,
a Delaware limited partnership
By:
/s/ Steven Vondran

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Name:
Steven Vondran

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Title:
SVP-LAPM

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Date:
March 20, 2007

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AMERICAN TOWERS, INC.,
a Delaware corporation
 
 
 
By:
/s/ Steven Vondran

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Name:
Steven Vondran

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Title:
SVP-LAPM

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Date:
March 20, 2007

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iPCS WIRELESS, INC.,
a Delaware corporation
 
HORIZON PERONAL COMMUNICATIONS, INC.,
an Ohio corporation
By:
/s/ Craig Kinley

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By:
/s/ Craig Kinley

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Name:
Craig Kinley

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Name:
Craig Kinley

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Title:
SVP of Eng & Net Ops

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Title:
SVP of Eng & Net Ops

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Date:
March 13, 2007

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Date:
March 13, 2007

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Exhibit 10.26