Satellite Coordination Letter Re AMC and Intelsat

0030-EX-ST-2009 Post Grant Documents

SWE-DISH Satellite Communications, Inc.

2009-03-17ELS_96860

A SES SATELLITES (GIBRALTAR) LIMITED 6March 2009 Fedéral Communications Commission International Bureau 445 12"" Street, S.W. _ Washington, DC 20554 Subject: Engineering Certificationof SES Satellites (Gibraltar) Ltd. To whom it may concern: This letter certifies that SES Satellites (Gibraltar) Lts, ("SES") is aware that SWE—DISH Satellite Communications,Inc. ("SWE—DISH") has petitioned the Federal Communications Commission ("FCC") for special temporary avthority ("STA") to conduct tests of a stabilized,transmit/receive Satcom—on—the—Move ("SOTM") antenna using Ku—band fixed—satellite service frequencies on a non— conforming, non—interference basis fora period of six (6) months. Specifically, SWE—DISH has petitioned the FCC for STA to utilize the AMC—21 satelliteat 125 degrees west longitude.‘ SES understands that, as describedin SWE—DISH‘s application, the transmit/receive antenna under test isa stabilized, vehicle—mounted antenna manufactured by SWE—DISH and SAAB AB ("SAARB"). The SWE—DISH SOTM antenna has a 98crn diameter with a transmit gain of41 dBi at 14.10 GHz.and a receive gain of40.4 dBi at 11.85 GHz. This antenna will operate with an rms pointing accuracy of+/— 0. 14 degrees while uplinking to the target satellite. ‘ The Commission‘s rules do not provide a framework for operation of an in—motion terminal in Ku—band spectrum allocated for fixed satellite services, However, Section 25.222 ofthe Commission‘s rules > specifies the technical requirements for operation of earth stations on vessels (ESVs) in the Ku—band. Because operational issues forthe SWE—DISH SOTM terminal under test are similar to thosefor ESVs, this application uses the performance standards and.other rules applicable to ESVs:as areference in describing the operations of the SOTM terminal, ses Satellites (Gibraitar (Limited) FourResearchWay Princeton NJ08540 USA tel(1) 609 987 4194 fax(1) 609.987 4312 krishjonnalagadda@ses—americom.com Registered in Gibraltar under Number 57393. Registered Office at28 trish Town P.O. .Box 15, Gibrallar

Measurements performed at a calibrated antenna range in Arboga, Sweden indicate the.proposed antenna under test satisfies or is less than 1 dB short of satisfying the performance standards specified in Section 25,209(@) and(b) ofthe Commission‘s rules." Additional measurements are planned to confirm compliance with Section 25.209 emission masks, andto enable SWE—DISH to generatedetailed antenna patterns that demonstrate compliance with spectral density at the input of the antenna at the Commission‘s —14 dBW/4kHz limit in ‘the 14.0—14.5 GHz band. For the purposes of theproposed STA, spectral density at the input to the antenna while under test will notexceed. —15 dBW/4kHz. Emissions from the antenna under test will automatically cease within 100 ms if the angle between the orbital location of AMC—21 and the axis ofthe main lobe of the uplink antenna exceeds0.5 degrees. and transmissions will not resume until such angle is equal to or less than 0.2 degrees. Moreover,in order to prevent any potential unacceptable interference from the antenna under test, experienced SWE—DISH staff will operate the terminal at all times. SES acknowledges that the use of the above referenced transmit/receive antenna by SWE—DISH, installed and operated in accordance with the above conditions, is within the levels coordinated with the adjacent satellite operators andshould. not cause unacceptable interference into adjacent satellites operating in accordance with FCC‘s 2—degree spacing policy. SWE—DISH has agreed that should operation ofthis antenna cause unacceptable interference into other systems, SWE—DISH willterminate transmissions immediately upon notice from theaffected parties. Sincerely, > Jn —»oLaet 4 7 2 Krish Jonnalagadda . Date: 6 (Asb 44 Manager, Spectrum Development SES Americom 4 Research Way Princeton NJ 08540 Tel: (609) 987 4194 ) ( 2 ‘The antenniapatterns from the initial tests show gain in one degree increments. The antenna pattermns ® resolution makesit difficult to confirm thatthe main lobe of the antennia satisfies 25.209(a) and (b) with regard to the 29—25l0g;,0 gain.envelope between approximately —1.5 and —1,7 degrees. Subsequent tests—are planned at a U.S.test range to generaté.higher resolution antenna patterns, For the:—purposes: of this STA, limiting input to —15 dBW/MAKHz will engurethe migin lobe remains within the 25.209 emission mask. ‘SES Satéilites (Gib‘raltaf {Limited) Four Résearch Way Pringston NJ O8540USA tel (1) 609 9B7 4194 fax(1).609 987 4912 bwishfannalagadda@ses—americom.com Registered in Gibrakiar under Number 57393. Registered Office at28Isish Town P.O. .Box 15, Gibraftar 1

Acceptance by SWE—DISH: SWE—DISH testifiesthat the informationprovided to.SES and reflected in this Affidavit letter is true and accurate to best of SWE—DISH‘s knowledge. f 3/4/ 0G Mark Steel * Date Senior VP of Engineering SWE—DISH Satellite Systems Inc Acceptance by INTELSAT: Intelsat agrees to operation ofthe above antenna provided it is conducted through the beam serving CONUS, Alaska and Hawaii , of AMC—21, with the technical parameters described herein with respect to Galaxy—18 at. 123°W, Galaxy— 13/Horizons—1 at 127°W, and Galaxy—27 at 129°W longitudes which have a nominalgeocentric separation of two (2) degrees, two(2) degrees and four (4) degress, respectively, from theAMC—21 at 125 degrees west longitude. o Nbuyougur JoseAlbuquerque Date: _ | Ifier%xgioZ’i‘ Senior or, Spectrum Director, Spec ngineering Engi i G Mflhdk /200 ‘SES Satelités(Gibraltar (Limited) Four Reséarch Way Princeton NJ 08540USA tel (1} 609 687 4194 fax(1) 609. 987 4312 Wishjonnalagadda@ses—americom.com Registered in Qibrafiar under Number 57399. Registered Office at28 frish Town P.0. .Box 15, Gibraltar


Document Created: 2009-03-16 14:18:20
Document Modified: 2009-03-16 14:18:20
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