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                                   Before the

                       Federal Communications Commission

                             Washington, D.C. 20554

   In the Matter of )

   )

   T-Mobile West Corporation ) File No. EB-11-LA-0155

   Antenna Structure Registrant )

   ASR # 1230664 )

   Irvine, California ) NOV No. V201232900009

   )

                              NOTICE OF VIOLATION

   Released: December 15, 2011

   By the District Director, Los Angeles Office, Western Region, Enforcement
   Bureau:

    1. This is a Notice of Violation ("Notice") issued pursuant to Section
       1.89 of the Commission's Rules, to, T-Mobile West Corporation,
       registrant of antenna structure # 1230664 in Irvine, California.

    2. On August 10, 2011, an agent of the Enforcement Bureau's Los Angeles
       Office inspected antenna structure # 1230664 located in Irvine,
       California, and observed the following violation:

     a. 47 C.F.R. S: 17.4(g): "The Antenna Structure Registration Number must
        be displayed in a conspicuous place so that it is readily visible
        near the base of the antenna structure. Materials used to display the
        Antenna Structure Registration Number must be weather-resistant and
        of sufficient size to be easily seen at the base of the antenna
        structure." At the time of inspection the agent observed that the
        antenna structure number was not posted at the base of the structure.

    3. Pursuant to Section 403 of the Communications Act of 1934, as amended,
       and Section 1.89 of the Commission's Rules, T-Mobile West Corporation,
       must submit a written statement concerning this matter within 20 days
       of release of this Notice. The response must fully explain each
       violation, must contain a statement of the specific action(s) taken to
       correct each violation and preclude recurrence, and should include a
       time line for completion of pending corrective action(s). The response
       must be complete in itself and signed by a principal or officer of the
       T-Mobile West Corporation. All replies and documentation sent in
       response to this Notice should be marked with the File No. and NOV No.
       specified above, and mailed to the following address:

   Federal Communications Commission

   Los Angeles Office

   1800 Studebaker Road, Suite 660

   Cerritos, California 90703

    4. This Notice shall be sent to T-Mobile West Corporation at its address
       of record.

    5. The Privacy Act of 1974 requires that we advise you that the
       Commission will use all relevant material information before it,
       including any information disclosed in your reply, to determine what,
       if any, enforcement action is required to ensure compliance. Any false
       statement made knowingly and willfully in reply to this Notice is
       punishable by fine or imprisonment under Title 18 of the U.S. Code.

   FEDERAL COMMUNICATIONS COMMISSION

   Nader Haghighat

   District Director

   Los Angeles District Office

   Western Region

   Enforcement Bureau

   47 C.F.R. S: 1.89.

   47 U.S.C. S: 403.

   P.L. 93-579, 5 U.S.C. S: 552a(e)(3).

   18 U.S.C. S: 1001 et seq.

   Federal Communications Commission

   2

                       Federal Communications Commission