Attachment Attachment A

This document pretains to SES-AMD-20190221-00295 for Amended Filing on a Satellite Earth Station filing.

IBFS_SESAMD2019022100295_1627725

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

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

4¥ CO_MSEARCH‘ Administrative Information Call Sign E170159 Licansee Code HUNESY Licensee Name HUGHES NETWORK SYSTEMS LIMITED Site Information TAOS, NM Latitude (NAD 83) 36° 23 16.0" N Longitude (NAD 83) 105° 3516.5" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 2111.62 m / 6927.9 it Link Information Satellite Type Geostationary Mode TO — Transmit—Only Modulation Digital Satellite Arc 95.2° W to 95.2° West Longitude Azimuth Range 162.8° to 162.8° Corresponding Elevation Angles 46.4°/46.4° Antenna Centerline (AGL) 549 m / 18.0 it Antenna Information Transmit Manufacturer sen Model 10.0M Gain / Diameter 67.1 dBi/10.0 m 3—08 / 15—0B Beamwidth 0.08°/0.16° Max Available RF Power (dewa kHiz) 350 (cewiMiHe) 110 Maximum ERP {dBWis kHiz) 321 (dewiMHe) 561 Interference Objectives: Long Term —151.0 dBw/4 kHz 20% Short Term —128.0 dBW/t kHz 0.0025% Frequency Information Transmit 28.0 GHz Emission / Frequency Range (MHz) 450MG7W — A70MG7W / 27500.0 — 28600.0 Max Great Cirele Coordination Distance 100.0 km / 62.1 mi Precipitation Scatter Contour Radius 100.0 km / 62.1 mi Commeeacan e repeniny vomay oy eere

4 CO_MSEARCH‘ Coordination Values TAOS, NM Licensee Name HUGHES NETWORK SYSTEMS LIMITED Latitude (NAD 83) 36° 23 16.0" N Longitude (NAD 83) 105° 38 16.5" W Ground Elevation (AMSL) 2111.62 m / 6927.9 t Antenna Centerline (AGL) 5.49 m / 18.0 it Antenna Mode Transmit28.0 GHz Interference Objectives: Long Term —151.0 dBWw/d kHz 20% Short Term —128.0 dBW/t kHz 0,0025% Max Available RF Power —35.0 (dBW/4 KHz) Transmit 28.0 GHz Horizon Antenna Horizon Coordination Azimuth (°) Elevation (*) Discrimination (*) Gain (dBi) Distance (km) 0 049 13170 —10.00 100.00 5 0.53 130.18 —10.00 100.00 10 D.54 128 31 —10.00 100.00 15 .55 126.15 —10.00 100.00 20 0.51 123.71 —10.00 100.00 25 0.55 12110 —10.00 100.00 30 .67 118.35 —10.00 100.00 35 0.67 115.36 —10.00 100.00 40 0.60 11222 —10.00 100.00 45 D.B4 109.09 —10.00 100.00 50 1.80 106.05 —10.00 100.00 55 3.02 102.87 —10.00 100.00 60 23.24 99.33 —10.00 100.00 65 3.90 95.77 —10.00 100.00 70 427 92.10 —10.00 100.00 75 4.97 88 .37 —10.00 100.00 B0 4.92 84.53 —10.00 100.00 85 451 80.97 —10.00 100.00 90 4.33 77.33 —10.00 100.00 95 3.64 73.85 —10.00 100.00 100 363 7041 —10.00 100.00 105 449 66.64 —10.00 100.00 110 5.19 62.95 —10.00 100.00 115 5.64 59.42 —10.00 100.00 120 562 56 25 —10.00 100.00 125 5.77 §3.15 —10.00 100.00 130 6.23 50.03 —10.00 100.00 135 5.88 47.73 —9.97 100.00 140 4.80 46.40 —5.66 100.00 145 4.24 45.09 —9.35 100.00 150 421 43.71 —9.01 100.00 155 365 4329 —8.91 100.00 160 3.62 42.82 —8.79 100.00 165 3.34 43.07 —8.85 100.00 170 251 44.32 B.17 100.00 175 1.77 45.89 —9.54 100.00 180 1.30 47.56 —9.93 100.00 185 2.08 4847 —10.00 100.00 es vomay oy eere

4 CO_MSEARCH‘ Coordination Values TAOS, NM Licensee Name HUGHES NETWORK SYSTEMS LIMITED Latitude (NAD 63) 36° 2316.0" N Longitude (NAD 83) 105° 35 16.5" W Ground Elevation (AMSL) 2111.62 m / 6927.9 ft Antenna Centerline (AGL) 5.49 m / 18.0 it Antenna Mode Transmit 26.0 GHz Interference Objectives: Long Term —151.0 dBW/ kHz 20% Short Term ~128.0 dBw/d kHz:0.0025% Max Available RF Power —35.0 (dBW/AkHz) Transmit 28.0 GHz Horizon Antenna Horizon Coordination Azimuth (°) Elevation (*) Discrimination (*) Gain (dBi) Distance (km) 190 211 50.42 —10.00 100.00 195 0.66 53.77 —10.00 100.00 200 0.60 56.23 —10.00 100.00 205 0.62 58.85 —10.00 100.00 210 0.55 61.72 —10.00 100.00 215 0.41 64.76 —10.00 100.00 220 0.36 67 86 ~10.00 100.00 225 0.30 7110 —10.00 100.00 230 0.00 T447 —10.00 100.00 235 0.00 77.80 —10.00 100.00 240 0.00 B81.19 —10.00 100.00 245 0.00 84.60 —10.00 100.00 250 0.00 88.05 —10.00 100.00 256 0.00 91.50 —10.00 100.00 260 0.00 94.94 —10.00 100.00 265 0.00 98.36 —10.00 100.00 270 0.00 101.75 —10.00 100.00 275 0.00 105.09 —10.00 100.00 280 0.00 108 37 —10.00 100.00 285 0.00 111.55 —10.00 100.00 290 0.00 114.64 —10.00 100.00 295 0.00 117.60 —10.00 100.00 300 0.00 120.40 —10.00 100.00 305 0.00 123.02 ~10.00 100.00 310 0.00 125 44 ~10.00 100.00 315 0.00 127 60 —10.00 100.00 320 0.22 129.68 —10.00 100.00 325 0.27 131.31 —10.00 100.00 330 0.31 13258 —10.00 100.00 335 0.42 133.54 —10.00 100.00 340 0.39 133.95 —10.00 100.00 345 0.39 133.99 —10.00 100.00 350 0.45 133.65 —10.00 100.00 355 0.48 13288 ~10.00 100.00 es vomay oy eere

HUGHES NETWORK SYSTEMS LIMITED Ka-Band Earth Station – Taos, NM 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 16:04:35
Document Modified: 2019-01-09 16:04:35
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