Attachment Exhibit A

This document pretains to SES-MOD-20170425-00465 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2017042500465_1210845

ISAT US Inc. FCC Form 312 Exhibit A Application to Modify License E150097 I. DESCRIPTION OF AMENDMENT ISAT US, Inc. (“ISAT US”), a subsidiary of Inmarsat Global Ltd. (“Inmarsat”), hereby seeks to modify its Global Xpress Ka-band land blanket earth station license, Call Sign E150097 (“License”), File No. SES-LIC-20150625-00383 (“GX Land Application”) (as modified by File Nos. SES-MFS-20160527-00458 and SES-MOD-20160720-00669), to add a new GX Earth station terminal type (“Swarm45” ) that will communicate with the Inmarsat-5 F2 (“I5F2”) and Inmarsat- 5 F3 (“I5F3”) satellites. Section II addresses the proposed new Earth station terminal. No other changes are requested by this modification application. ISAT US incorporates by reference Exhibits F (response to Question E17 regarding the remote control point) and G (24-hour point of contact)1 of the GX Land Application, as well as certain other portions of the GX Land Application referenced below. II. NEW EARTH STATION TERMINAL This modification application seeks to add the Swarm45 model terminal that is manufactured by Paradigm. The terminal will operate on the same frequencies as the GX Terminals in the current license: 19.7-20.2 GHz (space-to-Earth) and 29.5-30.0 GHz (Earth-to- space). The terminal model has a flat panel antenna that results in effective apertures of 0.45 m. The half-power beamwidth required in Section 25.130(f) is 2.6 degrees. The terminal will operate at fixed or temporary fixed locations and allow organizations from sectors, including media, humanitarian, energy, and government to quickly deploy a communication network to meet mission needs. 1 Exhibit G was submitted as a supplement to the GX Land Application on August 14, 2015.

The required technical data for the Swarm45 Earth stations is provided in the Form 312. In addition, for blanket licensing of transmitting Earth stations in the 29.5-30.0 GHz band, the Commission adopted off-axis EIRP spectral density levels contained in Section 25.138(a). Although the Commission’s Section 25.115(g)(1)(i) requires measurements from -180 to 180 degrees for the co-polarized signal because of the flat panel array design (no reflective optics), which is different than traditional parabolic antennas, there is no spill over and no back lobes for the SWARM45 earth station; and the data is only available between -90 to +90 degrees. To the extent necessary, ISAT US seeks a waiver of Section 25.115(g)(1)(i) and Section 25.138(a) to allow ISAT US to provide measured data for the co-polarized signals only for -90 to 90 degrees. As illustrated in the off-axis EIRP spectral density plots in Exhibit B, the Swarm45 meets the performance requirements in Section 25.138 (a) under clear sky conditions. 2 In addition, these earth station models will be operated within the -118 dBW/m2/MHz power flux-density at the earth’s surface of the I5F2 and I5F3 satellite. Thus, both terminal types are demonstrated to be able to operate without causing unacceptable interference, consistent with the requirements of Section 25.209(f).3 The Commission has deleted the requirement in to provide receive earth station patterns in the 19.7-20.2 GHz frequency band (see Sections 25.132 and 25.115). The Swarm45 terminal generally conforms to the relevant antenna performance patterns in Section 25.209. Inmarsat acknowledges that there are minor exceedance at certain off-axis angles for the Swarm45 terminal, and understands and agrees to accept interference from adjacent FSS satellite networks to the extent the relevant receiving antenna performance requirements of Section 25.209 are exceeded. Radiation hazard analysis for the Swarm45 antenna and a discussion of the results are provided in Exhibit C. The proposed Swarm45 Terminal will be subject to the same national security requirements described in Section 4 of the GX Land Application. That discussion is incorporated by reference herein. 2 ISAT US provides in Exhibit B the off-axis EIRP density plots in accordance with the consolidated and streamlined requirements for providing such information, as adopted in the Commission’s order consolidating and streamlining the Part 25 rules. See Comprehensive Review of Licensing and Operating Rules for Satellite Services, Second Report and Order, 30 FCC Rcd 14713 ¶¶ 214-215 (2015). 3 See Section 25.209(f).

III. RESPONSE TO QUESTION 36 ISAT US, Inc. submits this response to Question 36 of the FCC Form 312 out of an abundance of caution. In 2005, the Commission dismissed a Petition for Declaratory Ruling (the “Petition”) filed by Inmarsat Mobile Networks, Inc.’s affiliate, Inmarsat Global Limited (“Inmarsat Global”), seeking United States market access to provide MSS in the 2 GHz band. Subsequent to Inmarsat Global’s filing, the Commission assigned all 2 GHz spectrum currently allocated for MSS in the United States to two other satellite operators, and thus dismissed Inmarsat Global’s Petition. 4 4 Use of Returned Spectrum in the 2 GHz Mobile Satellite Service Frequency Bands, 20 FCC Rcd 19696 (2005); Inmarsat Global Limited, Petition for Declaratory Ruling to Provide Mobile Satellite Service to the United States Using the 2 GHz and Extended Ku-Bands, 20 FCC Rcd 19409 (2005).


Document Created: 2010-01-01 00:00:00
Document Modified: 2010-01-01 00:00:00
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