Attachment Frequency Report

This document pretains to SES-MOD-20170418-00412 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2017041800412_1205462

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for HUGHES NETWORK SYSTEMS LIMITED SANTA CLARA, CA 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 .................................................................................................. 8 5. CERTIFICATION ......................................................................................................................................... 12 Frequency Coordination and Interference Analysis Report 03/03/2017 Page 2 of 12

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 12

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. The following companies reported potential great circle interference conflicts that did not meet the objectives on a line-of-sight basis. When over-the-horizon losses are considered on the interfering paths, sufficient blockage exists to negate harmful interference from occurring with the proposed transmit-receive earth station. Company Pacific Bell Tel Com dba AT&T California T-Mobile License LLC No other carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 03/03/2017 Page 4 of 12

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 AT&T Corp. Alameda County Water District Alameda County of California Another ISP, LLC Antioch, City of CBS Broadcasting Inc CBS Communication Services Inc CBS Radio East Inc. CONTRA COSTA COUNTY COMMUNICATIONS DEPT. California, State of Central Valley Concrete, Inc. City & County of San Francisco PUC City of Dublin City of Oakland City of Pittsburg, CA Police Dept City of San Jose City of Vallejo Clearwire Spectrum Holdings II, LLC Clearwire Spectrum Holdings III, LLC Comcast Cablevision Corp of California Conterra Ultra Broadband, LLC Contra Costa Water District County of Sacramento - ECS-Network County of San Mateo Dublin San Ramon Eastern Contra Costa Transit Ether Web Network, Inc. Etheric Networks, Inc. Fixed Wireless Holdings, LLC GTE Mobilnet of California LTD Partnersh Gatespeed Broadband, Inc. Global Data Link, Inc Good Samaritan Hospital Harris Corporation (Virginia) Interwest Management Services Inc. John Muir Health KBWB License LLC KGO Television, Inc. KTVU, Fox Television Stations Inc. M.U.T. Licensing, LLC Frequency Coordination and Interference Analysis Report 03/03/2017 Page 5 of 12

MODERN SYSTEMS RESEARCH, INC. MODESTO, CITY OF Marin, County of Merced County Office of Education Modesto Irrigation District Monterey Bay Aquarium Monterey County Superintendent of School Monterey, County of NBC Telemundo License Co. - KNTV Napa, City of New Cingular Wireless PCS LLC - N CAL Nextlink Wireless, LLC Nextweb Inc OTA BROADCASTING (SFO), LLC Oakland Police Department Olympic Wireless, LLC PERALTA COMMUNITY COLLEGE DISTRICT Pacific Bell Tel Com dba AT&T California Pacific Gas and Electric Company Proxim Wireless Corporation REMEC Broadband Wireless Razzo Link, Inc Regents of the University of California River Delta Wireless SACRAMENTO, CITY OF SAN JOSE WATER COMPANY SANTA CLARA UNIVERSITY STOCKTON, CITY OF Sacramento County Sacramento Television Stations, Inc Sacramento Valley Limited Partnership San Francisco, City and County of San Joaquin County San Jose Water Company San Jose, City of (ECOMM) Softcom Internet Communications, Inc. Sprint PCS Sprint Spectrum L.P. Sprint Spectrum LP DBA Sprint PCS Sprint Telephony PCS, L.P. Stanford University Stockton, Port of Sutro Tower Inc. T-Mobile License LLC TLink Broadband Services The Internet Connection Inc The Internet Store, Inc. Towerstream Corp. Unimas San Francisco LLC Union Pacific Railroad Company Unwired LTD Velociter Wireless, Inc. Verizon Wireless (VAW) LLC-N CA/NV Vista Broadband Networks, Inc. Walmart Global eCommerce Webpass Inc. Frequency Coordination and Interference Analysis Report 03/03/2017 Page 6 of 12

Webperception, LLC WiLine Networks Inc. Wiline Spectrum Holdings LLC Wirelessco L.P. Frequency Coordination and Interference Analysis Report 03/03/2017 Page 7 of 12

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 8 of 12

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: 170215COMSGE05 Administrative Information Status ENGINEER PROPOSAL Call Sign E150087 Licensee Code HUNESY Licensee Name HUGHES NETWORK SYSTEMS LIMITED Site Information SANTA CLARA, CA Venue Name Latitude (NAD 83) 37° 21' 54.5" N Longitude (NAD 83) 121° 57' 41.0" W Climate Zone A Rain Zone 4 Ground Elevation (AMSL) 16.1 m / 52.8 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 97.1° W to 97.1° West Longitude Azimuth Range 142.6° to 142.6° Corresponding Elevation Angles 39.4° / 39.4° 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 142.0 km / 88.3 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 9 of 12

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Coordination Values SANTA CLARA, CA Licensee Name HUGHES NETWORK SYSTEMS LIMITED Latitude (NAD 83) 37° 21' 54.5" N Longitude (NAD 83) 121° 57' 41.0" W Ground Elevation (AMSL) 16.1 m / 52.8 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 0.00 127.87 -10.00 136.18 -10.00 100.00 5 0.00 124.80 -10.00 136.18 -10.00 100.00 10 0.00 121.54 -10.00 136.18 -10.00 100.00 15 0.00 118.14 -10.00 136.18 -10.00 100.00 20 0.00 114.62 -10.00 136.18 -10.00 100.00 25 0.00 110.99 -10.00 136.18 -10.00 100.00 30 0.00 107.29 -10.00 136.18 -10.00 100.00 35 0.00 103.53 -10.00 136.18 -10.00 100.00 40 0.00 99.73 -10.00 136.18 -10.00 100.00 45 0.00 95.89 -10.00 136.18 -10.00 100.00 50 0.00 92.04 -10.00 136.18 -10.00 100.00 55 0.00 88.18 -10.00 136.18 -10.00 100.00 60 0.00 84.32 -10.00 136.18 -10.00 100.00 65 0.00 80.49 -10.00 136.18 -10.00 100.00 70 0.00 76.68 -10.00 136.18 -10.00 100.00 75 0.00 72.92 -10.00 136.18 -10.00 100.00 80 0.00 69.21 -10.00 136.18 -10.00 100.00 85 0.00 65.59 -10.00 136.18 -10.00 100.00 90 0.00 62.05 -10.00 136.18 -10.00 100.00 95 0.00 58.64 -10.00 136.18 -10.00 100.00 100 0.00 55.38 -10.00 136.18 -10.00 100.00 105 0.00 52.30 -10.00 136.18 -10.00 100.00 110 0.00 49.44 -10.00 136.18 -10.00 100.00 115 0.00 46.83 -9.76 136.83 -9.76 100.00 120 0.00 44.54 -9.22 138.35 -9.22 100.00 125 0.00 42.61 -8.74 139.70 -8.74 100.00 130 0.00 41.10 -8.35 140.82 -8.35 100.00 135 0.00 40.06 -8.07 141.62 -8.07 100.00 140 0.00 39.52 -7.92 142.05 -7.92 100.00 145 1.25 38.25 -7.57 100.00 -7.57 100.00 150 0.00 40.01 -8.05 141.66 -8.05 100.00 155 0.22 40.82 -8.27 139.04 -8.27 100.00 160 0.26 42.28 -8.65 134.77 -8.65 100.00 165 0.25 44.22 -9.14 134.77 -9.14 100.00 170 0.26 46.50 -9.69 132.49 -9.69 100.00 175 0.25 49.11 -10.00 132.48 -10.00 100.00 180 0.25 51.97 -10.00 131.83 -10.00 100.00 185 0.27 55.05 -10.00 130.57 -10.00 100.00 Frequency Coordination and Interference Analysis Report 03/03/2017 Page 10 of 12

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Coordination Values SANTA CLARA, CA Licensee Name HUGHES NETWORK SYSTEMS LIMITED Latitude (NAD 83) 37° 21' 54.5" N Longitude (NAD 83) 121° 57' 41.0" W Ground Elevation (AMSL) 16.1 m / 52.8 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 0.30 58.31 -10.00 129.07 -10.00 100.00 195 0.32 61.72 -10.00 127.12 -10.00 100.00 200 0.34 65.26 -10.00 125.82 -10.00 100.00 205 0.35 68.89 -10.00 124.87 -10.00 100.00 210 0.35 72.61 -10.00 124.91 -10.00 100.00 215 0.38 76.39 -10.00 122.93 -10.00 100.00 220 0.35 80.22 -10.00 125.00 -10.00 100.00 225 0.34 84.08 -10.00 126.08 -10.00 100.00 230 0.35 87.95 -10.00 124.94 -10.00 100.00 235 0.37 91.83 -10.00 123.54 -10.00 100.00 240 0.38 95.71 -10.00 122.63 -10.00 100.00 245 0.37 99.57 -10.00 123.99 -10.00 100.00 250 0.34 103.39 -10.00 125.88 -10.00 100.00 255 0.30 107.16 -10.00 129.10 -10.00 100.00 260 0.24 110.86 -10.00 132.92 -10.00 100.00 265 0.23 114.50 -10.00 133.87 -10.00 100.00 270 0.00 117.95 -10.00 136.18 -10.00 100.00 275 0.00 121.36 -10.00 136.18 -10.00 100.00 280 0.00 124.62 -10.00 136.18 -10.00 100.00 285 0.00 127.70 -10.00 136.18 -10.00 100.00 290 0.00 130.56 -10.00 136.18 -10.00 100.00 295 0.00 133.17 -10.00 136.18 -10.00 100.00 300 0.29 135.70 -10.00 128.95 -10.00 100.00 305 0.63 137.95 -10.00 108.69 -10.00 100.00 310 0.38 139.26 -10.00 122.80 -10.00 100.00 315 0.00 139.94 -10.00 136.18 -10.00 100.00 320 0.00 140.48 -10.00 136.18 -10.00 100.00 325 0.00 140.50 -10.00 136.18 -10.00 100.00 330 0.00 139.99 -10.00 136.18 -10.00 100.00 335 0.00 138.97 -10.00 136.18 -10.00 100.00 340 0.00 137.48 -10.00 136.18 -10.00 100.00 345 0.00 135.58 -10.00 136.18 -10.00 100.00 350 0.00 133.31 -10.00 136.18 -10.00 100.00 355 0.00 130.72 -10.00 136.18 -10.00 100.00 Frequency Coordination and Interference Analysis Report 03/03/2017 Page 11 of 12

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 12 of 12


Document Created: 2017-04-13 15:55:07
Document Modified: 2017-04-13 15:55:07
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