Attachment Loral coord letter

This document pretains to SES-LIC-20030501-00565 for License on a Satellite Earth Station filing.

IBFS_SESLIC2003050100565_333260

RobertC. Draper PrincipalEngineer SatelliteServicesEngineering 500 Hills Drive P.O. Box 7018 Bedminster,NJ 07921 Office (908)-470-2326 Fax (908)-470-2546 August 26, 2003 Ms. Sylvia Lam FederalCommunicationsCommission SatelliteandRadiocommunicationDivision InternationalBureau The Portals,Room 7-A346 445 12th Street,S.W. Washington,DC 20554 Subject: EngineeringCertification of Loral Skynet concerningauthority requested by Amoco Production Companyto operatea 2.4 meter C-band transnlit earthstationon the Telstar6 Satellitelocatedat 930West Longitude. Dear Ms. Lam: This letter certifies that Loral Skynet@l is fully aware that Amoco Production Company ("Amoco"), a customer of Loral Skynet's customer Stratos, is seeking authorization to communicatewith the Telstar 6 U.S. domesticsatelliteusing a ChannelMaster offset C-band transmit-receive antenna that does not strictly confonn to the FCC 2-degree spacing requirementsfor off-axis sidelobegain2. Loral Skynet is authorizedto operate and currently operatesTelstar 6 at 93° WL in the geostationaryearthorbit. Loral Skynet has reviewedthe performanceparametersof the ChannelMaster Type 243 2.4 meter diameterantenna,and the digital carrier parametersas they are to be usedby Amoco. The antennaexhibits non-conformancein the region from 1.0 to 1.5 degreesoff-axis from maximum transmit gain, due to the width of its main gain lobe. I t is understoodthat this antennawill be professionally installed with a nominal pointing accuracy less than :1:0.5 degreesand will operateat a maximum input power density at the antennawaveguideflange of -14 dBW/4 kHz, well below the -2.7 dBW/4 kHz FCC maximum for 2-degreecompliant J Skynetis a registeredtrademarkof Loral SpaceComCorporation 247 CFR § 25.209

systemsand routine licensing3. Thesemaximum operatinglimits are also consistentwith the SIA Part-25C-bandproposalof 0.5 degreesmisalignmentand-12 dBW/4 kHz power density into the antennaflange. Loral Skynet acknowledgesthat the use of the Channel Master Type 243 2.4 meter non- conforming antennawith alignment tolerancesand power density levels into the antenna flange asstatedin this letter will not causeunacceptableinterferenceinto adjacentsatellitesin accordancewith the FCC's 2-degreespacingpolicy and will acceptinterferencefrom adjacent satellitesto the degreeto which hannful interferencewould not be expectedto be causedto an earth station employing an antennaconforming to the referencepatternsdefined in § 25.209 of the FCC rules. Respectfully, !d~~c l1~d'" Acceptanceby PanAmSat: PanAmSatagreesto the useof the ChannelMasterType 243 2.4 meterantennaand the antennaalignmenttolerancestoward Loral Skynet'sTelstar6 satelliteat 930W.L. and the power densitylevels into the antennaflange as statedin this letter, with respectto Galaxy satellitetransponders thatarewithin :f: 6 degrees orbitalspacingfromTelstar6. ~~~f:~r= ~ CustomerSupport~ngineering PanAmSatCorporation 347 CFR § 25.212(d)


Document Created: 2003-09-05 16:04:18
Document Modified: 2003-09-05 16:04:18
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