FIRST AMENDMENT TO SALE SITE MASTER LEASE AGREEMENT

This FIRST AMENDMENT TO SALE SITE MASTER LEASE AGREEMENT (this "First Amendment") is entered into effective as of November 30, 2012 (the "Effective Date") by and among CCTMl LLC (formerly known as T3 Tower 1 LLC) and CCTM2 LLC (formerly known as T3 Tower 1 LLC), each a Delaware limited liability company (collectively, and each individually, "Tower Operator"), T-Mobile USA, Inc., a Delaware corporation ("T-Mobile Parent"), and each T-Mobile Collocator entity named on the signature pages below ("T-Mobile Collocators"). Each T-Mobile Collocator, T-Mobile Parent and Tower Operator may hereinafter be referred to individually as the "Party" or collectively as the "Parties".

WHEREAS, the T-Mobile Collocators, the T-Mobile Parent and Tower Operator entered into a certain Sale Site Master Lease Agreement dated as of November 30,2012 (the "Sale Site MLA"); and

WHEREAS, the Parties intend to revise and replace the form Site Lease Agreement, attached to the Sale Site MLA as Exhibit C and make certain other related amendments to the Sale Site MLA.

NOW THEREFORE, in consideration of the foregoing and the representations, warranties and agreements contained in this First Amendment, and for other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, and intending to be legally bound hereby, the Parties agree as follows:

1) Recitals and Defined Terms. The foregoing recitals are incorporated herein. Capitalized terms shall have the same meanings set forth in the Sale Site MLA, unless otherwise defined herein.

2) Site Location Agreements. The form of Site Lease Agreement, attached to the Sale Site MLA as Exhibit C, is hereby deleted in its entirety and replaced by the form Site Location Agreement ("SLA"), attached hereto as Exhibit C-l, and is hereby incorporated into the Sale Site MLA by reference. All references to the terms "Site Lease Agreement(s)" and "Exhibit C" in the Sale Site MLA are hereby replaced by the terms "Site Location Agreement(s)" and "Exhibit C-l", respectively.

3) Enforceability and Attestation to Execution of SLAs. The Parties acknowledge and agree that the SLAs shall be valid and enforceable notwithstanding any lack of attestation to the execution thereof. In the event any SLA is alleged or determined to be unenforceable due to improper execution, attestation, and/or delivery, the Parties will prepare, execute and deliver an enforceable, valid, and binding replacement SLA, containing the same terms and conditions as the original SLA. Unless otherwise