Attachment Response

This document pretains to SES-LIC-20050825-01183 for License on a Satellite Earth Station filing.

IBFS_SESLIC2005082501183_480321

WILMERHALE JAN 3 9 2006 Jok LRelind Satelie Divsion InternationalBureau mmesesss nnessen Jimay27206 pecoEiye E;h onstvaneniocon Ms. Marlene H. Dortch JAN 2 7 2006 frokeCommunications Commission redendCommunatons Conmissio Federal es eavay 445 12th Street, S.W. Washington, D.C. 20554 Res 1B File No. SES—L1C—20050825—01183— Globalstar USA, LLC Clifton Earth Station/IOT Antenna Application Dear Ms. Dortch: In response to an inguity from staff in the Commission‘s International Bureau, Globalstar USA, LLC is submitting the attached information for association with the above—referenced application. Should there be any questions concerning this submission, please contact the undersigned. Sincerely yours, &p@ LFlera Josh L. Roland Counsel to Globalstar USA, LLC ce: Scott Kotler William F. Adler David Weinreich Wilmer Cutlr Pickering ie and Dore us, 2445 M Suee, NW, Wshingron, DC20037 Satmr: Seing Gein: Boren Gnawis lonion Marah No Nertentigna. Ond faowie Watan: Visiegon

Justification of EIRP for Globalstar Cliften, TX In—Orbit—Test Antenna Globalstar wishes to perform In—Orbit Test (IOT) on existing and future spacecraft using an antenna operating in the 1.6/2.4 CHz bands at its Clifton Texas Rarth Station Facility. One of the primazy tests to be perforned is the determination and verification of spacecraft antenna patterms. Downlink, or spacecraft 2.4 Gife tranomit, antenna verification requires the use of a high gain antenna which is accommedated by the receive function of the subject antenna. Uplink, o spaceczaft 1.6 Gife receive, antenna verification requires the use of an unmodulated carrier (CH) at an EIRP greater than that transmitted from a @lobalstar handset transceiver. This increased BIRP is required in order to create sufficient dynamic range to provide the ability to measure peak—to—null antenna pattern vaxiations of 20 dB. The attached link budget indicates the Carrier—to— Noise ratio (C/N) expected when using an uplink EIRP of 24 dBW. Using this BIRP provides the nominal 30 dB C/N. The performance of these In—Orbit—Tests will be crucial to the successful deployment of the eight spare Globalstar spacecraft that is planned for the near future. Tn the downlink analysis, it is expected that there will be no Adjacent Channel Interference and, thus, the Adjacent Channel Interference Density is an extremely low level.. It is anticipated that any interference to other operators in the uplink band can be avoided through coordination. Pize wo. see—zrc—zcoscsas—01203 Jenuazy 26, 2006

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Document Created: 2006-01-30 16:22:12
Document Modified: 2006-01-30 16:22:12
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