Attachment SESMOD201503020105WA

SESMOD201503020105WA

SUPPLEMENT submitted by U.S. SATELLITE CORPORATION

WAIVERS

0000-00-00

This document pretains to SES-MOD-20150302-00105 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2015030200105_1079080

December 7, 2012 Federal Communications Commission International Bureau 445 12"" Street, SW Washington, DC 20554 To whom it may concern; This letter certifies that Intelsat Global Services Corporation, (Intelsat) is aware that US Satellite Corporation (USSC), is seeking FCC authorization to access Galaxy 18 at 123° WL as a point of communications, using Ku—band transmit/receive antennas that are not strictly compliant with the FCC‘s two— degree spacing requirements for off—axis sidelobe gain.‘ Intelsat understands that USSC will be deploying 74 cm equivalent transmit/receive remote terminals (E74cm) for its two—way VSAT services working with the hub located at Salt Lake, UT under the call sign E870499. These terminals will be deployed with Hughes HNS—AN—074P—KU antenna which has the same transmit gain as a 74 ocm round antenna (E74cm). Intelsat also understands that USSC will deploy 98¢m transmit/receive circular aperture remote terminals identified under Hughes model number HNS—AN—O98P—KU antenna.‘ The above antennas are not compliant with FCC Section 25.209. These antennas will meet the antenna sidelobe performance at an angle slightly larger than that specified in the FCC rules. Therefore the specification of pointing accuracy is defined below in order to ensure that the operations of these non— compliant antennas, with the associated defined angle at which the antenna starts meeting the 29—25 log(0) sidelobe performance, will not cause unacceptable interference into adjacent satellites. Hughes Network Systems antenna model number HNS—AN—074P—KU, 98 by 56 em elliptical—aperture antenna This terminal utilizes a 98 by 56 cm elliptical—aperture antenna having the same transmit gain as a 74 cm equivalent circular—aperture (E74 cm) antenna. This antenna generally exhibits its non—compliance in the region from 1.5 to 1.7 degrees off axis from maximum gain in the transmit band, due to the width of the main gain lobe. The longer dimension of the antenna will be tangent to the geostationary satellite orbit as it appears at the particular earth station location. This antenna is to be installed with a nominal pointing accuracy of less than or equal to +/—0.4 degrees and will operate at maximum input power density at the antenna waveguide flange of —14 dBW/4kHz. * The antenna reflector and other optical components for both the 74 cm and 98 cm units are custom manufactured for Hughes Network Systems by General Dynamics — Satcom Technologies (formerly known as "Prodelin"). Intelsat Corporation 3400 International Orive NW, Washington DC 20008—3006 USA wwrw.intelsat.com T +1 202—944—6800 F +1 202—944—7898

Hughes Network Systems model number HNS—AN—O98P—KU. 98 cm circular antenna The other terminal type consists of a 98 cm circular—aperture antenna. Antennas of this type exhibit their non—compliance in the region from 1.5. to 1.6 degrees off axis from maximum gain in the transmit band, due to the width oftheir main gain lobe. They are compliant with the side lobe pattern requirements specified in Section 25.209 of the Commission‘s Rules at an off—axis angle equal to or greater than 1.6 degree, in the transmit band. These antennas are to be installed with a nominal pointing accuracy of then than or equal to +/—0.4 degrees and will operate at a maximum input power density at the antenna waveguide flange of —14 dBW/4 kHz. The undersigned further certifies that the maximum forward downlink Satellite EIRP density is equal to or less than +13 dBW/4 kHz. This operational level of the Ku—band VSAT network is within the levels coordinated with the adjacent satellite operators. Furthermore, in order to prevent unacceptable interference into adjacent satellites, Intelsat has been informed and USSC acknowledges that these antennas will be installed in compliance with the technical, operational and performance requirements of Part 25 of the FCC rules and any requirements set forth in the license granted by the FCC for the above sub—meter antennas. Intelsat and USSC acknowledge that the use of the Hughes Network Systems‘ non—conforming antennas will not cause unacceptable interference into adjacent satellites in accordance with the FCC‘s 2 degree spacing policy and will not seek any additional protection compared to the case of an earth state employing an antenna conforming to the reference pattems defined in §25.209 of the FCC rules. Sincerely, 1 [ 7/ bere Alan Yates V ‘ Date Senior Technical Advisor, Spectrum Strategy Intelsat, LLC

Acceptance by USSC: USSC affirms that the information provided to Intelsat and reflected in this coordination letter is true and accurate to the best of USSC‘s knowledge, information and belief, and that it shall comply with all relevant Intelsat coordination agreements, as provided herein. Ay4)% To/ 203 Max,G. Worthington. _ Date Vice President US Satellite Corporation 935 W Bullion Street Murray, UT 84123 Acceptance by SES World Skies: SES World Skies agrees to the use of the HNS model number HNS—AN—074P— KU elliptical—aperture (E74 cm) antenna and HNS model number HNS—AN— 098P—KU, 98¢m circular antenna with their respective azimuth angle alignment tolerances towards the intended satellite and the power density levels into the antenna flange as stated in this letter, with respect to SES satellites and the associated networks located within +6° from Galaxy—18 at 123 ° WL. . 12013 J ATivm Mm« g«uelomqufiefiwvicad


Document Created: 2013-11-07 09:56:11
Document Modified: 2013-11-07 09:56:11
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