Thales letter E.XVII

SUPPLEMENT submitted by Thales Avionics, Inc.

Certification Thales letter E.XVII-J1 signed

2019-09-16

This document pretains to SES-MFS-20190424-00544 for Modification w/ Foreign Satellite (earth station) on a Satellite Earth Station filing.

IBFS_SESMFS2019042400544_1908175

I un n am n n uay 49e u = @ April 11"", 2017 Paul Blais Chief, System Analysis Branch Satellite Division International Bureau Federal Communications Commission 445 12"" Street, W.W. Washington, D.C. 20554 Subject: Certification of Hughes Network Systems, LLC (HNS) for the ECHOSTAR XVII satellite Dear Mr. Blais: Pursuant to §25.227(b)(2)(ii) and 25.220(d) of the FCC rules, Hughes Network Systems, LLC provides this certification letter regarding the application by which Thales Avionics, Inc. (Thales) is seeking authorization from the FCC to operate technically identical Ka—band transmit/receive terminals on domestic and international flights, consistent with ITU RR 5.526 and the Commission‘s current rules for the Ka band. Thales Avionics is seeking authorization for these aeronautical Ka—band earth stations to utilize the ECHOSTAR XVII satellite located at the 107° WL nominal orbital position, in conformance with the off—axis EIRP density and power flux density (PFD) levels specified in Section 25.138(a) of the FCC rules. Having reviewed the contents of the Thales‘ application, as well as all material presented by them on how they will utilize the ECHOSTAR XVII satellite included in their letter dated April 11, 2017, HNS e Certifies that coordination for the ITU filing associated with the operation of the ECHOSTAR XVII satellite has been concluded with all relevant geostationary satellite networks located in an orbital arc at +/— 6 degrees from the 107° WL nominal orbital position. e Certifies that power density levels as specified by Thales are consistent with the existing agreements signed by HNS for the inter—satellite coordination of the ITU filings associated with Hughes Network Systems 1717 Exploration Lane * Germantown. MD 20876 + Tel, 301 4285500 * wwwwhughes.com An EchoStar Company

the operation of the ECHOSTAR XVII satellite with respect of all relevant geostationary satellite networks located in an orbital arc at +/— 6 degrees from the 107° WL nominal orbital position. * Will ensure that, if the operations proposed by Thales are authorized by the FCC, all future inter— satellite coordination agreements associated with the operation of the ECHOSTAR XVIl satellite will include the power density levels specified by Thales. for Principal Engineer Regulatory Affairs Hughes Network Systems 11717 Exploration Lane * Germantown, MD 20876 * Tel: 301 4285500 * wwwhughes.com An EchoStar Company


Document Created: 2017-04-12 16:56:10
Document Modified: 2017-04-12 16:56:10
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