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                               ENFORCEMENT BUREAU

                                 WESTERN REGION

                               Los Angeles Office

                        18000 Studebaker Road, Suite 660

                               Cerritos, CA 90703

                                 April 21, 2010

   Topson Downs

   Culver City, CA

                         NOTICE OF UNLICENSED OPERATION

   Case Number: EB-10-LA-0042

   Document Number: W201032900009

   On March 9, 2010, in response to an interference complaint from T-Mobile
   on the frequency range from 1820.0 MHz to 1920 MHz in Culver City,
   California, an agent from the Los Angeles Office located the signal to an
   antenna on the roof of your building at 3840 Watseka Ave., Culver City,
   California. During the interview with the Los Angeles Agent, a
   representative from Topson Downs acknowledged the operation of a
   bi-direction amplifier ("BDA") installed in the company's basement area.

   T-Mobile has a license to provide PCS services on 1900.0 MHz in the Culver
   City area. Based on the information before us, it appears the operation of
   your transmitter (BDA) is subject to the licensing requirements under
   Section 24.11 of the Commission's Rules, which applies to PCS licensees
   like T-Mobile. In addition, transmitters in the PCS radio service must
   have received an equipment authorization prior to use. A licensee's
   authority to install a BDA does not, without further authorization from
   the licensee, permit a subscriber to install a BDA. In response to an
   inquiry from a Los Angeles agent, T-Mobile reported that it did not
   provide you authorization to install a BDA.

   Operation of radio transmitting equipment without a valid FCC
   authorization or license is a violation of Section 301 of the
   Communications Act of 1934, as amended, and may subject the responsible
   parties to substantial monetary forfeitures, in rem arrest action against
   the offending radio equipment, and criminal sanctions including
   imprisonment. Because unlicensed operation creates a danger of
   interference to important radio communications services and may subject
   the operator to severe penalties, this warning emphasizes the importance
   of complying strictly with these legal requirements.


   You have ten (10) days from the date of this notice to respond with any
   evidence that you have authority to operate granted by the FCC or have
   obtained consent from a licensed Common Carrier. To resolve the issue with
   respect to your authority to operate this device, and pursuant to Section
   403 of the Communications Act of 1934, as amended, provide an explanation
   as to what has been done to correct the interference issue and to ensure
   that it will not recur; provide the equipment authorization for the
   equipment involved, and identify the make, model and serial number of each
   piece of equipment including the antennas if applicable.

   Your response should be sent to the address in the letterhead and
   reference the listed case and document number. Under the Privacy Act of
   1974, 5 U.S.C. S: 552a(e)(3), we are informing you that the Commission's
   staff will use all relevant material information before it to determine
   what, if any, enforcement action is required to ensure your compliance
   with FCC Rules. This will include any information that you disclose in
   your reply.

   You may contact this office if you have any questions.

   Nader Haghighat

   District Director

   Los Angeles Office

   Western Region

   Enforcement Bureau


   Excerpts from the Communications Act of 1934, As Amended

   Enforcement Bureau, "Inspection Fact Sheet", March 2005

   Typically, a BDA is one component in an in-building radiation system
   comprising of low power transmitters, receivers, indoor antennas and/or
   leaky coaxial cable radiators, designed to improve service reliability
   inside buildings or structures.  See 47 C.F.R. S: 22.99.

   47 C.F.R. S: 24.11.

   See 47 C.F.R. S: 24.51

   47 U.S.C. S: 301.

   See 47 U.S.C. S:S: 401, 501, 503, 510.

   47 U.S.C. S: 403.