Attachment Attachment A

This document pretains to SES-AMD-20190221-00305 for Amended Filing on a Satellite Earth Station filing.

IBFS_SESAMD2019022100305_1627716

Ka-Band Earth Station – Missoula, MT Frequency Coordination Report 28 GHz Prepared on Behalf of HUGHES NETWORK SYSTEMS LIMITED January 9, 2019

HUGHES NETWORK SYSTEMS LIMITED Ka-Band Earth Station – Missoula, MT Frequency Coordination Report 28 GHz Table of Contents 1. Summary of Results -1- 2. 28 GHz Common Carrier and LTTS Coordination -1- 3. 28 GHz UMFUS Coordination -2- 4. Earth Station Coordination Data -3- 5. Contact Information -7- Comsearch Proprietary -0- January 9, 2019

HUGHES NETWORK SYSTEMS LIMITED Ka-Band Earth Station – Missoula, MT Frequency Coordination Report 28 GHz 1. Summary of Results On behalf of HUGHES NETWORK SYSTEMS LIMITED, Comsearch performed a coordination notice for all existing and proposed terrestrial licenses within the coordination contours of their proposed Ka-Band earth station in Missoula, MT, which will transmit at 28 GHz1. Prior-notification letters were sent to the licensees and a copy of the notification data is provided in section four of this report. The earth station coordination was finalized on January 4, 2019. No objections were received from any of the incumbent 28 GHz licensees. Our notification to the UMFUS incumbents was performed under the assumption that the earth station would be operating on a secondary basis to UMFUS L1 & L2 Block operations and a contact at Hughes Network Systems Limited has been provided in case any concerns may arise in the future. 2. 28 GHz Common Carrier and LTTS Coordination In accordance with FCC Rules and Regulations, the Ka-Band earth station in Missoula, MT was prior-coordinated by Comsearch. A notification letter and datasheets for this earth station were sent to the following 28 GHz common carrier fixed microwave licensees. These licensees are authorized to operate temporary fixed operations from 27.5 – 29.5 GHz on a nationwide basis or local basis. Licensee Authorized Geographic Area Frontier Southwest Incorporated Nationwide A notification letter and datasheets for the Ka-Band earth station in Missoula, MT were also sent to the following 28 GHz local television transmission licensee. This licensee is authorized to operate temporary fixed operations from 27.5 – 29.5 GHz on a nationwide basis. Licensee Authorized Geographic Area Information Super Station, LLC Continental US No objections were received from the common carrier or local television transmission service incumbents. 1 The proposed earth station will operate in the 27.5 – 28.6 GHz portion of the Ka-Band. Comsearch Proprietary -1- January 9, 2019

HUGHES NETWORK SYSTEMS LIMITED Ka-Band Earth Station – Missoula, MT Frequency Coordination Report 28 GHz 3. 28 GHz UMFUS Coordination A Notification letter was sent to the following 28 GHz UMFUS licensees. The proposed earth station will operate on frequencies that overlap Channel L1 & L2 of the UMFUS service. The total frequency allocation for Channels L1 & L2 of the UMFUS spectrum appears below. Channel: L1 27.500 - 27.925 GHz L2 27.925 - 28.350 GHz Licensee Channel Area of Operation Glaciercom L1, L2 County Based No objections were received from the UMFUS incumbents. Comsearch Proprietary -2- January 9, 2019

HUGHES NETWORK SYSTEMS LIMITED Ka-Band Earth Station – Missoula, MT Frequency Coordination Report 28 GHz 4. Earth Station Coordination Data This section presents the data pertinent to the proposed Ka-Band earth station in Missoula, MT. This data was circulated to all incumbent licensees in the shared 28 GHz frequency ranges. Comsearch Proprietary -3- January 9, 2019

HUGHES NETWORK SYSTEMS LIMITED Ka-Band Earth Station – Missoula, MT Frequency Coordination Report 28 GHz Comsearch Proprietary -4- January 9, 2019

4 CO_MSEARCH‘ Coordination Values MISSOULA, MT Licensee Name HUGHES NETWORK SYSTEMS LIMITED Latitude (NAD 83 ) 46° 56 10.3" N Longitude (NAD 83) 114°6°53.9" W Ground Elevation (AMSL) $76.04 m / 3202 2 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Mode Transmit 28.0 GHz Interference Objectives: Long Term ~151.0 dBW/t kHz 20% Short Term —128.0 dBW/4 kHz:0,0025% Max Available RF Power —35.0 (dBW/a kHz) Transmit 28.0 GHz Horizon Antenna Horizon Coordination Azimuth (*) Elevation (°) Discrimination (°) Gain (d81) Distance (km) 0 2.98 141.22 —10.00 100.00 5 254 138.24 —10.00 100.00 10 2.96 135.11 —10.00 100.00 15 3.05 131.52 —10.00 100.00 20 822 127.79 —10.00 100.00 25 3.51 123.94 —10.00 100.00 30 8.51 119.87 —10.00 100.00 36 319 11562 —10.00 100.00 40 3.00 11L37 —10.00 100.00 45 3.05 107.14 —10.00 100.00 50 2.99 10285 —10.00 100.00 55 2.14 98.52 ~10.00 100.00 60 2.67 94.21 ~10.00 100.00 65 327 89.89 —10.00 100.00 70 342 85.54 —10.00 100.00 T5 3.83 81.16 ~10.00 100.00 80 4.01 76.80 —10.00 100.00 85 339 7259 —10.00 100.00 90 3.02 68 41 —10.00 100.00 95 242 64.38 —10.00 100.00 100 2.32 60.32 —10.00 100.00 105 245 56.99 —10.00 100.00 110 0.82 §3.12 —10.00 100.00 115 0.45 49.66 —10.00 100.00 120 0.00 46.49 —9.68 100.00 125 0.00 4331 —6.91 100.00 130 0.00 4042 —8.16 100.00 135 0.00 37 69 —746 100.00 140 0.00 35.80 —6.85 100.00 145 0.00 34.23 —6.36 100.00 150 0.00 3326 —6.05 100.00 155 0.00 3295 —5.95 100.00 160 0.00 33.50 —6.06 100.00 165 0.00 34.30 —6.38 100.00 170 0.00 35.89 —6.88 100.00 175 0.00 38.01 —7.50 100.00 180 0.00 40.55 —8.20 100.00 185 0.00 4346 —8.95 100.00 vomay oy eere

4 CO_MSEARCH‘ Coordination Values MISSOULA, MT Licensee Name HUGHES NETWORK SYSTEMS LIMTED Lalilude (NAD 83) 46° 56‘ 10.3" N Longitude (NAD 83) 114° 653.9" w Ground Elevation (AMSL) 976.04 m / 3202.2 ft Antenna Centerline (AGL) 5.49 m / 18.0 it Antenna Mode Transmit 280 GHz Interference Objectives: Long Term ~151.0 dBW/ kHz 20% ~128.0. dBW/A kHz. 0.0025% Max Available RF Power —35.0 (dBWI4 kHz) Transmit 28.0 GHz Horizon Antenna Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) 190 1.16 45.96 —9.56 100.00 195 1.24 4942 ~10.00 100.00 200 1.51 5299 ~10.00 100.00 205 1.88 56.69 ~10.00 100.00 210 241 50.50 ~10.00 100.00 215 231 64.62 ~10.00 100.00 220 1.70 §8.92 ~10.00 100.00 225 277 7291 —10.00 100.00 230 1.20 7739 ~10.00 100.00 285 258 8149 ~10.00 100.00 240 1.47 85.86 ~10.00 100.00 245 1.42 90.11 —10.00 100.00 250 1.89 9439 —10.00 100.00 255 1.20 98.60 —10.00 100.00 260 1.21 10282 —10.00 100.00 265 0.00 106.78 ~10.00 100.00 270 0.78 111.07 ~10.00 100.00 275 0.56 115.08 ~10.00 100.00 280 0.00 118 87 —10.00 100.00 285 0.00 12274 —10.00 100.00 250 0.00 12649 ~10.00 100.00 295 0.00 130.09 ~10.00 100.00 300 0.34 13972 —10.00 100.00 305 0.43 136.98 ~10.00 100.00 310 0.47 139.94 ~10.00 100.00 315 0.54 142.56 —10.00 100.00 220 0.82 144.94 ~10.00 100.00 $25 0.91 146.63 ~10.00 100.00 330 0.96 147 68 ~10.00 100.00 335 1.99 148.65 —10.00 100.00 240 1.97 148 64 —10.00 100.00 345 219 14778 —10.00 100.00 250 1.54 14548 ~10.00 100.00 355 1.70 14340 —10.00 100.00 vomay oy eere

HUGHES NETWORK SYSTEMS LIMITED Ka-Band Earth Station – Missoula, MT Frequency Coordination Report 28 GHz 5. Contact Information For questions or information regarding the 28 GHz Frequency Coordination Report, please contact: Contact person: Dennis Jimeno Title: Engineer III, Telecommunications Company: Comsearch Address: 19700 Janelia Farm Blvd., Ashburn, VA 20147 Telephone: 703-726-5858 Fax: 703-726-5599 Email: DJimeno@Comsearch.com Web site: www.comsearch.com Comsearch Proprietary -7- January 9, 2019


Document Created: 2019-01-09 16:02:28
Document Modified: 2019-01-09 16:02:28
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