Attachment Frequency Report

This document pretains to SES-MOD-20170418-00416 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2017041800416_1205449

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for HUGHES NETWORK SYSTEMS LIMITED N LAS VEGAS, NV Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 March 03, 2017

TABLE OF CONTENTS 1. CONCLUSIONS ............................................................................................................................................ 3 2. SUMMARY OF RESULTS ............................................................................................................................ 4 3. SUPPLEMENTAL SHOWING ....................................................................................................................... 5 4. EARTH STATION COORDINATION DATA .................................................................................................. 6 5. CERTIFICATION ......................................................................................................................................... 10 Frequency Coordination and Interference Analysis Report 03/03/2017 Page 2 of 10

1. CONCLUSIONS An interference study considering all existing, proposed and prior coordinated microwave facilities within the coordination contours of the proposed earth station demonstrates that this site will operate satisfactorily with the common carrier microwave environment. Further, there will be no restrictions of its operation due to interference considerations. Frequency Coordination and Interference Analysis Report 03/03/2017 Page 3 of 10

2. SUMMARY OF RESULTS A number of great circle interference cases were identified during the interference study of the proposed earth station. Each of the cases, which exceeded the interference objective on a line-of-sight basis, was profiled and the propagation losses estimated using NBS TN101 (Revised) techniques. The losses were found to be sufficient to reduce the signal levels to acceptable magnitudes in every case. Frequency Coordination and Interference Analysis Report 03/03/2017 Page 4 of 10

3. SUPPLEMENTAL SHOWING Pursuant to Part 25.203(c) of the FCC Rules and Regulations, the satellite earth station proposed in this application was coordinated by Comsearch using computer techniques and in accordance with Part 25 of the FCC Rules and Regulations. Coordination data for this earth station was sent to the below listed carriers with a letter dated 02/15/2017. Company Bel Air Internet, LLC Bigelow Management Inc Central Telephone Company of Nevada Citizens Utilities Rural Company, Inc. Clearwave Communications, LLC Clearwire Spectrum Holdings II, LLC Clearwire Spectrum Holdings III, LLC Digis LLC Experior Networks, LLC Fireline Network Solutions Inc. Global Telecom & Technology Americas Global Telecom & Technology Americas, In Hualapai Tribe InfoWest, Inc KVVU BROADCASTING CORPORATION LasVegas.Net New Cingular Wireless PCS LLC- Las Vegas Nextlink Wireless, LLC Nextweb Inc Pacific Bell Tel Com dba AT&T California REGIONAL TRANS. COMMISSION OF CLARK CO. San Bernardino County of California Skybeam Acquisition Corporation Southwestco Wireless L P -( AZ/NV) Sparkplug Las Vegas, Inc. Sparkplug Southwest, LLC Sprint Telephony PCS, L.P. State of Nevada, Dept of Transportation State of Nevada, Enterprise IT Services T-Mobile License LLC Towerstream Corp. VegasWiFi Communications LLC Wecom, Inc. Whittrio Inc Frequency Coordination and Interference Analysis Report 03/03/2017 Page 5 of 10

4. EARTH STATION COORDINATION DATA This section presents the data pertinent to frequency coordination of the proposed earth station that was circulated to all carriers within its coordination contours. Frequency Coordination and Interference Analysis Report 03/03/2017 Page 6 of 10

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 03/03/2017 Job Number: 170215COMSGE03 Administrative Information Status ENGINEER PROPOSAL Call Sign E150089 Licensee Code HUNESY Licensee Name HUGHES NETWORK SYSTEMS LIMITED Site Information N LAS VEGAS, NV Venue Name Latitude (NAD 83) 36° 14' 11.8" N Longitude (NAD 83) 115° 7' 4.7" W Climate Zone A Rain Zone 5 Ground Elevation (AMSL) 586.08 m / 1922.8 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 97.1° W to 97.1° West Longitude Azimuth Range 151.2° to 151.2° Corresponding Elevation Angles 43.8° / 43.8° Antenna Centerline (AGL) 3.66 m / 12.0 ft Antenna Information Receive - FCC32 Transmit - FCC32 Manufacturer ASC Signal ASC Signal Model 5.6m 5.6m Gain / Diameter 58.6 dBi / 5.6 m 62.0 dBi / 5.6 m 3-dB / 15-dB Beamwidth 1.00° / 2.00° 0.14° / 0.32° Max Available RF Power (dBW/4 kHz) -20.5 (dBW/MHz) 3.5 Maximum EIRP (dBW/4 kHz) 41.5 (dBW/MHz) 65.5 Interference Objectives: Long Term -156.0 dBW/MHz 20% -151.0 dBW/4 kHz 20% Short Term -146.0 dBW/MHz 0.01% -128.0 dBW/4 kHz 0.0025% Frequency Information Receive 18.0 GHz Transmit 28.0 GHz Emission / Frequency Range (MHz) 100KG7W - 250MG7W / 18300.0 - 19300.0 100KG7W - 250MG7W / 27850.0 - 30000.0 100KG7W - 250MG7W / 19700.0 - 20200.0 Max Great Circle Coordination Distance 138.8 km / 86.3 mi 100.0 km / 62.1 mi Precipitation Scatter Contour Radius 100.0 km / 62.1 mi 100.0 km / 62.1 mi Frequency Coordination and Interference Analysis Report 03/03/2017 Page 7 of 10

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Coordination Values N LAS VEGAS, NV Licensee Name HUGHES NETWORK SYSTEMS LIMITED Latitude (NAD 83) 36° 14' 11.8" N Longitude (NAD 83) 115° 7' 4.7" W Ground Elevation (AMSL) 586.08 m / 1922.8 ft Antenna Centerline (AGL) 3.66 m / 12.0 ft Antenna Model ASC Signal 5.6 meter Antenna Mode Receive 18.0 GHz Transmit 28.0 GHz Interference Objectives: Long Term -156.0 dBW/MHz 20% -151.0 dBW/4 kHz 20% Short Term -146.0 dBW/MHz 0.01% -128.0 dBW/4 kHz 0.0025% Max Available RF Power -20.5 (dBW/4 kHz) Receive 18.0 GHz Transmit 28.0 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 0 0.65 129.71 -10.00 107.72 -10.00 100.00 5 0.68 127.31 -10.00 106.68 -10.00 100.00 10 0.71 124.66 -10.00 105.44 -10.00 100.00 15 0.71 121.78 -10.00 105.21 -10.00 100.00 20 0.70 118.72 -10.00 105.75 -10.00 100.00 25 0.65 115.50 -10.00 107.80 -10.00 100.00 30 0.58 112.16 -10.00 110.87 -10.00 100.00 35 0.50 108.72 -10.00 114.57 -10.00 100.00 40 0.41 105.21 -10.00 121.12 -10.00 100.00 45 0.31 101.66 -10.00 127.93 -10.00 100.00 50 0.24 98.07 -10.00 133.09 -10.00 100.00 55 0.20 94.47 -10.00 135.87 -10.00 100.00 60 0.00 90.85 -10.00 136.18 -10.00 100.00 65 0.00 87.25 -10.00 136.18 -10.00 100.00 70 0.00 83.65 -10.00 136.18 -10.00 100.00 75 0.00 80.08 -10.00 136.18 -10.00 100.00 80 0.00 76.54 -10.00 136.18 -10.00 100.00 85 0.00 73.06 -10.00 136.18 -10.00 100.00 90 0.00 69.65 -10.00 136.18 -10.00 100.00 95 0.00 66.33 -10.00 136.18 -10.00 100.00 100 0.00 63.11 -10.00 136.18 -10.00 100.00 105 0.00 60.03 -10.00 136.18 -10.00 100.00 110 0.00 57.11 -10.00 136.18 -10.00 100.00 115 0.00 54.39 -10.00 136.18 -10.00 100.00 120 0.00 51.89 -10.00 136.18 -10.00 100.00 125 0.00 49.65 -10.00 136.18 -10.00 100.00 130 0.00 47.72 -9.97 136.27 -9.97 100.00 135 0.00 46.14 -9.60 137.28 -9.60 100.00 140 0.00 44.95 -9.32 138.07 -9.32 100.00 145 0.00 44.17 -9.13 138.60 -9.13 100.00 150 0.00 43.84 -9.05 138.83 -9.05 100.00 155 0.00 43.96 -9.08 138.75 -9.08 100.00 160 0.00 44.53 -9.22 138.35 -9.22 100.00 165 0.00 45.53 -9.46 137.68 -9.46 100.00 170 0.00 46.93 -9.79 136.77 -9.79 100.00 175 0.00 48.70 -10.00 136.18 -10.00 100.00 180 0.00 50.79 -10.00 136.18 -10.00 100.00 185 0.00 53.17 -10.00 136.18 -10.00 100.00 Frequency Coordination and Interference Analysis Report 03/03/2017 Page 8 of 10

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Coordination Values N LAS VEGAS, NV Licensee Name HUGHES NETWORK SYSTEMS LIMITED Latitude (NAD 83) 36° 14' 11.8" N Longitude (NAD 83) 115° 7' 4.7" W Ground Elevation (AMSL) 586.08 m / 1922.8 ft Antenna Centerline (AGL) 3.66 m / 12.0 ft Antenna Model ASC Signal 5.6 meter Antenna Mode Receive 18.0 GHz Transmit 28.0 GHz Interference Objectives: Long Term -156.0 dBW/MHz 20% -151.0 dBW/4 kHz 20% Short Term -146.0 dBW/MHz 0.01% -128.0 dBW/4 kHz 0.0025% Max Available RF Power -20.5 (dBW/4 kHz) Receive 18.0 GHz Transmit 28.0 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 190 0.00 55.80 -10.00 136.18 -10.00 100.00 195 0.00 58.63 -10.00 136.18 -10.00 100.00 200 0.00 61.64 -10.00 136.18 -10.00 100.00 205 0.24 64.69 -10.00 133.12 -10.00 100.00 210 0.29 67.96 -10.00 129.18 -10.00 100.00 215 0.41 71.31 -10.00 120.63 -10.00 100.00 220 0.59 74.74 -10.00 110.26 -10.00 100.00 225 0.53 78.30 -10.00 112.96 -10.00 100.00 230 0.57 81.88 -10.00 111.17 -10.00 100.00 235 0.81 85.49 -10.00 101.30 -10.00 100.00 240 0.82 89.14 -10.00 100.80 -10.00 100.00 245 0.87 92.79 -10.00 100.00 -10.00 100.00 250 0.87 96.44 -10.00 100.00 -10.00 100.00 255 0.85 100.07 -10.00 100.00 -10.00 100.00 260 0.86 103.65 -10.00 100.00 -10.00 100.00 265 0.83 107.18 -10.00 100.38 -10.00 100.00 270 0.75 110.62 -10.00 103.72 -10.00 100.00 275 0.71 113.97 -10.00 105.46 -10.00 100.00 280 0.68 117.22 -10.00 106.65 -10.00 100.00 285 0.70 120.35 -10.00 105.88 -10.00 100.00 290 0.71 123.33 -10.00 105.13 -10.00 100.00 295 0.73 126.11 -10.00 104.56 -10.00 100.00 300 0.72 128.66 -10.00 104.82 -10.00 100.00 305 0.71 130.93 -10.00 105.29 -10.00 100.00 310 0.73 132.91 -10.00 104.42 -10.00 100.00 315 0.72 134.52 -10.00 104.93 -10.00 100.00 320 0.70 135.73 -10.00 105.50 -10.00 100.00 325 0.68 136.50 -10.00 106.48 -10.00 100.00 330 0.66 136.82 -10.00 107.30 -10.00 100.00 335 0.62 136.66 -10.00 109.00 -10.00 100.00 340 0.54 136.00 -10.00 112.58 -10.00 100.00 345 0.52 134.97 -10.00 113.26 -10.00 100.00 350 0.58 133.59 -10.00 110.73 -10.00 100.00 355 0.63 131.83 -10.00 108.49 -10.00 100.00 Frequency Coordination and Interference Analysis Report 03/03/2017 Page 9 of 10

5. CERTIFICATION I HEREBY CERTIFY THAT I AM THE TECHNICALLY QUALIFIED PERSON RESPONSIBLE FOR THE PREPARATION OF THE FREQUENCY COORDINATION DATA CONTAINED IN THIS APPLICATION, THAT I AM FAMILIAR WITH PARTS 101 AND 25 OF THE FCC RULES AND REGULATIONS, THAT I HAVE EITHER PREPARED OR REVIEWED THE FREQUENCY COORDINATION DATA SUBMITTED WITH THIS APPLICATION, AND THAT IT IS COMPLETE AND CORRECT TO THE BEST OF MY KNOWLEDGE AND BELIEF. BY: _ Gary K. Edwards Senior Manager COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 DATED: March 03, 2017 Frequency Coordination and Interference Analysis Report 03/03/2017 Page 10 of 10


Document Created: 2017-04-13 14:15:16
Document Modified: 2017-04-13 14:15:16
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