Attachment 1998Satellite CD-cla

1998Satellite CD-cla

LETTER submitted by Satellite CD

ltr

1999-11-12

This document pretains to SAT-MOD-19981211-00099 for Modification on a Satellite Space Stations filing.

IBFS_SATMOD1998121100099_841202

WILEY, REIN & FIELDING 1776 K STREET, N.W. WASHINGTON, D.C. 20006 (202) 7 19—7000 CARL R. FRANK FACSIMILE (202) 7 19—7269 (202) 719—7049 CcFRANK@wRF.com November 12, 1999 i 49508IVED * , $ Magalie Roman Salas, Secretary Federal Communications Commussion NOV J The Portals on I2 19 445 12"" Street, SW (Whiom, 99 12" Street Lobby, * TW—A325 The ye Washington, DC 20054 "erp, "Soy Re: Satellite CD Radio, Inc. File No. SAT—MOD—19981211—00099 Dear Ms. Salas: The following is designed to clarify the application in the above file number. The primary CD Radio earth stations for satellite TT&C (Tracking, Telemetry & Command) are located near Quito, Ecuador and Utive, Panama. The stations are operated by remote control from two redundant satellite centers (SCCs) located in New York City, NY and Hawley, PA. The stations are redundant and constructed similarly to remote controlled TT&C stations used on many previous satellite systems dating back to WESTAR. Each station is connected to both SCCs by two redundant full—duplex 128 kb/s circuits leased from international carriers with diverse routing through different transmission facilities. Please also note that, due to redundancy, one TT&C station can operate all three CD Radio satellites over a considerable period of time if the necessity arose and that emergency backup TT&C will be available from an EMBRATEL TT&C station in Guaratiba, Brazil. CD Radio has already agreed, if coordination is not feasible, to operate its satellites without TT&C radio transmissions when any satellite is within declinations + 1° from the

WILEY, REIN & FIELDING Magalie Roman Salas, Secretary November 12, 1999 Page 2 geostationary arc. Recent analyses show that it is possible to operate the satellites without TT&C radio transmissions for several degrees further in declination if the necessity arose. Respectfully yours, ‘ e Counsel for Satellite CD Radio, Inc. CRF/bap co: Ron Repasi Rocky Patterson Rosalee Chiara


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Document Modified: 2019-04-22 07:34:38
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