Attachment Exhibit A

This document pretains to SAT-AMD-20140218-00023 for Amended Filing on a Satellite Space Stations filing.

IBFS_SATAMD2014021800023_1035364

ViaSat, Inc. FCC Form 312 Exhibit A Page 1 of 2 Description of Amendment ViaSat, Inc. (“ViaSat”) hereby amends its pending Letter of Intent seeking to use a satellite (“VIASAT-KA 89W”) under the authority of the United Kingdom to access the United States using portions of the Ka band at the nominal 89º W.L. orbital location. IBFS File No. SAT-LOI-20140204-00013, Call Sign S2917 (“Application”). Specifically, ViaSat clarifies certain matters and provides certain supplemental information as described below. All other information in the Application remains unchanged. Coordination Request by the United Kingdom ViaSat clarifies that VIASAT-KA 89W will operate under the authority of the United Kingdom. The United Kingdom’s Office of Communications (“Ofcom”) submitted a coordination request with the ITU in connection with this network (under the name UK-KA-8) on January 28, 2014 on behalf of ViaSat’s wholly-owned subsidiary, ViaSat Satellite Holdings, Ltd., as evidenced by the attached letter from Ofcom to the ITU. Amended Schedule S and GIMS Container File ViaSat provides an amended Schedule S that includes all of the information required in S8 of the Schedule S. In lieu of embedding GXT files in Schedule S, ViaSat provides the antenna beam diagrams in a GIMS container file associated with this amendment, consistent with the Commission’s interim waiver of Section 25.114(d)(3). 1 In addition, the service area descriptions in S6(d) have been clarified by including diagrams of the service areas of all uplink and downlink beams in the updated GIMS container file. ViaSat requests a limited waiver of Sections 25.114(c) and 25.114(d)(4) to the extent necessary to allow the submission of these diagrams in a GIMS container file instead of embedding GXT files in Schedule S in response to S6(c). As the Interim Waiver Public Notice regarding the use of a GIMS container file instead of GXT files indicates, granting such a waiver would serve the public interest by imposing “less burdensome compliance options” and therefore facilitating the submission of satellite technical data for processing by the Commission.2 The clarifications to the service area of the satellite in S6 require corresponding revisions to S7 of the Schedule S, which also have been made. In addition, the receive system noise temperature in S7(n) for beam BNL is 416869 K. The entry in S7(n) for this beam was left blank in the Schedule S because, as explained in the Application, the Schedule S software does not 1 See Public Notice, International Bureau Adopts Policy of Granting Interim Waiver of Certain Requirements for Space Station Applications, Report No. SPB-255, DA 14-90, at 4 n.9 (rel. Jan. 28, 2014) (“Interim Waiver Public Notice”). 2 Id. at 3.

ViaSat, Inc. FCC Form 312 Exhibit A Page 2 of 2 allow a receive system noise temperature of greater than approximately 32800 K to be entered into this field. 3 The amended Schedule S and GIMS container file supersede the versions filed on February 4, 2014. 3 ViaSat requested a limited waiver of Section 25.114(c) of the Commission’s rules to the extent necessary to provide the receive system noise temperature in the Technical Annex instead of in the Schedule S. Application, Letter of Intent at 13 & Technical Annex § A.14. ViaSat requests that beam BNL be included in that waiver request.

File Number: SSU3799 28 January 2014 Space Services Department Stephen Limb Radiocommunication Bureau International Frequency Co—ordination International Telecommunication Union Direct line: +44 20 7981 3091 Place des Nations CH 1211 Geneva 20 Direct fax: + 44 20 7981 3208 Switzerland Mobile: + 44 7818 075 102 Fax: 00 41 22 730 5785 ifc.enquiries@ofcom.org.uk Dear Sir Coordination Request for the UK—KA—8 Satellite Network The Administration of the United Kingdom hereby submits to the Radiocommunication Bureau the enclosed coordination request information for the UK—KA—8 satellite network. It would be appreciated if you could confirm receipt of this communication via email to Ifc.enquiries@ofcom.org.uk. Yours faithfully » Callum Gray cc ViaSat Riverside House 2a Southwark Bridge Road LondonSE1 9HA www.ofcom.org.uk

TRANSMISSITON VERIFIGATION REPORT TIME : 28/01/2014 13:59 NAME : NON OPPS FAM : ©2079813921 TEL : 020798913921 SER.E# : BOBMEN772724 DATE, TIME 28/81 13:59 FAX NO, /NAME BR DURATION 0: a5: 20 PAGE (5) @1 RESULT OK MODE STANDARD ECM File Number: S8U3799 28 January 2014 Space Services Department Radiocommunication Bureay Stephen Limb Internationat Frequency Co—ordin International Telecommunication ation Union Place des Nations Direct line: +44 20 7981 8091 CH 1211 Geneva 20 Switzerland Direct fax: + 44 20 7981 3208 Fax: 00 41 22 730 57886 Mobile: * 447818 075 102 ifelenquities@ofcom .org.uk; Dear Sir Coordination Request for the UK— KA~ 8 Satellite Network The Administration of the United Kin gdom hereby submits to the Radioc Bureau the enclosed coordination reques ommunication t information for the UK—KA—8 sate ilite network, It would be appreciated if you cou ld confirm recei pt of this commun Ifc.enquiries@ofgom.org. uk. ication via email to Yours faithfully CC Callum Gray oc ViaSat


Document Created: 2014-02-18 09:52:50
Document Modified: 2014-02-18 09:52:50
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