Attachment Frequency Report

This document pretains to SES-MOD-20170418-00407 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2017041800407_1205477

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for HUGHES NETWORK SYSTEMS LIMITED TUKWILA, WA (E150081) Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 February 09, 2017

TABLE OF CONTENTS 1. CONCLUSIONS ............................................................................................................................................ 3 2. SUMMARY OF RESULTS ............................................................................................................................ 4 3. SUPPLEMENTAL SHOWING ....................................................................................................................... 5 4. EARTH STATION COORDINATION DATA .................................................................................................. 7 5. CERTIFICATION ......................................................................................................................................... 11 Frequency Coordination and Interference Analysis Report 02/09/2017 Page 2 of 11

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 02/09/2017 Page 3 of 11

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 02/09/2017 Page 4 of 11

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 01/25/2017. Company AT&T Mobility Spectrum LLC - Washington Accel Net, Inc. Bain, Robert B Bates Technical College Bellevue Community College (KBCS) Boeing Company Boingo Wireless, Inc. CENCOM - Kitsap 911 COMMUNITY TRANSIT SNOHOMISH COUNTY PTBA City of Tacoma Clearwire Spectrum Holdings II, LLC Clearwire Spectrum Holdings III, LLC Clearwire Spectrum Holdings LLC Cortland Electronics Corp. Cyberdyne Networks, Inc. DAY MANAGEMENT CORPORATION Eastside Public Safety Com Agency Everett Clinic Everett MSO, Inc. GW Networks KIRO-TV, Inc KUOW / Puget Sound Public Radio King Broadcasting Company Mobilisa Enterprise Wireless New Cingular Wireless PCS LLC-Washington Olympia Cellular Limited Partnership Olympic Wireless, LLC Onvia Orcas Power And Light Cooperative PACIFIC WIRELESS SYSTEMS LLC Port of Tacoma Puget Sound Energy Qwest Corporation Rendezvous Communications LLC Seattle FCC License Sub, LLC Seattle SMSA Limited Partnership Seattle's Best Internet, LLC Seattle, City of Seattle, City of (King) Selahv Farms, LLC Frequency Coordination and Interference Analysis Report 02/09/2017 Page 5 of 11

Sinclair Seattle Licensee, LLC Snohomish County Emergency Radio System Soos Creek Water & Sewer District Sprint Spectrum L.P. Sprint Spectrum LP Seattle St. Anthony Hospital Startouch, Inc. T-MOBILE LIC LLC - VOICESTREAM PCS BTA I T-Mobile License LLC Towerstream Corp. UNIVERSITY OF WASHINGTON Verizon Wireless (VAW) LLC - (WA) Washington State Patrol Washington State of Dept of Transportat Frequency Coordination and Interference Analysis Report 02/09/2017 Page 6 of 11

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 02/09/2017 Page 7 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 01/25/2017 Job Number: 170125COMSGE08 Administrative Information Status ENGINEER PROPOSAL Call Sign E150081 Licensee Code HUNESY Licensee Name HUGHES NETWORK SYSTEMS LIMITED Site Information TUKWILA, WA Venue Name Latitude (NAD 83) 47° 29' 37.7" N Longitude (NAD 83) 122° 17' 41.0" W Climate Zone A Rain Zone 3 Ground Elevation (AMSL) 33.94 m / 111.4 ft Link Information Satellite Type Geostationary Mode RO - Receive-Only Modulation Digital Satellite Arc 97° W to 97° West Longitude Azimuth Range 147.3° to 147.3° Corresponding Elevation Angles 30.1° / 30.1° Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Information Receive - FCC32 Manufacturer General Dynamics Model 8.1 meter Gain / Diameter 62.0 dBi / 8.1 m 3-dB / 15-dB Beamwidth 1.00° / 2.00° Interference Objectives: Long Term -156.0 dBW/MHz 20% Short Term -146.0 dBW/MHz 0.01% Frequency Information Receive 18.0 GHz Emission / Frequency Range (MHz) 100KG7W - 250MG7W / 18300.0 - 19300.0 100KG7W - 250MG7W / 19700.0 - 20200.0 Max Great Circle Coordination Distance 144.2 km / 89.6 mi Precipitation Scatter Contour Radius 100.0 km / 62.1 mi Frequency Coordination and Interference Analysis Report 02/09/2017 Page 8 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Coordination Values TUKWILA, WA Licensee Name HUGHES NETWORK SYSTEMS LIMITED Latitude (NAD 83) 47° 29' 37.7" N Longitude (NAD 83) 122° 17' 41.0" W Ground Elevation (AMSL) 33.94 m / 111.4 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model General Dynamics 8.1 meter Antenna Mode Receive 18.0 GHz Interference Objectives: Long Term -156.0 dBW/MHz 20% Short Term -146.0 dBW/MHz 0.01% Receive 18.0 GHz Horizon Antenna Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) 0 0.41 136.98 -10.00 120.85 5 0.50 133.48 -10.00 114.41 10 0.57 129.77 -10.00 111.05 15 0.70 125.92 -10.00 105.56 20 0.50 121.82 -10.00 114.17 25 0.00 117.56 -10.00 136.18 30 0.50 113.53 -10.00 114.33 35 0.64 109.32 -10.00 108.22 40 0.56 105.02 -10.00 111.67 45 0.57 100.71 -10.00 111.09 50 0.87 96.40 -10.00 100.00 55 1.32 92.05 -10.00 100.00 60 1.89 87.66 -10.00 100.00 65 2.03 83.25 -10.00 100.00 70 1.96 78.86 -10.00 100.00 75 1.93 74.49 -10.00 100.00 80 1.73 70.19 -10.00 100.00 85 1.69 65.91 -10.00 100.00 90 1.53 61.72 -10.00 100.00 95 1.59 57.54 -10.00 100.00 100 1.57 53.48 -10.00 100.00 105 1.23 49.68 -10.00 100.00 110 0.66 46.20 -9.62 108.41 115 0.60 42.69 -8.76 112.98 120 0.23 39.65 -7.96 139.74 125 0.00 36.88 -7.17 144.24 130 0.34 34.08 -6.31 135.30 135 0.60 31.79 -5.56 121.16 140 0.76 30.21 -5.00 116.20 145 1.06 29.16 -4.62 105.71 150 1.24 29.01 -4.56 101.53 155 1.59 29.47 -4.73 100.00 160 1.99 30.65 -5.16 100.00 165 2.58 32.35 -5.75 100.00 170 3.18 34.66 -6.50 100.00 175 4.25 37.17 -7.26 100.00 180 5.13 40.28 -8.13 100.00 185 6.33 43.59 -8.99 100.00 Frequency Coordination and Interference Analysis Report 02/09/2017 Page 9 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Coordination Values TUKWILA, WA Licensee Name HUGHES NETWORK SYSTEMS LIMITED Latitude (NAD 83) 47° 29' 37.7" N Longitude (NAD 83) 122° 17' 41.0" W Ground Elevation (AMSL) 33.94 m / 111.4 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model General Dynamics 8.1 meter Antenna Mode Receive 18.0 GHz Interference Objectives: Long Term -156.0 dBW/MHz 20% Short Term -146.0 dBW/MHz 0.01% Receive 18.0 GHz Horizon Antenna Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) 190 6.85 47.51 -9.92 100.00 195 7.93 51.42 -10.00 100.00 200 8.06 55.80 -10.00 100.00 205 9.01 60.07 -10.00 100.00 210 9.80 64.49 -10.00 100.00 215 10.50 69.02 -10.00 100.00 220 11.35 73.61 -10.00 100.00 225 11.50 78.32 -10.00 100.00 230 11.62 83.04 -10.00 100.00 235 11.72 87.78 -10.00 100.00 240 11.81 92.52 -10.00 100.00 245 11.87 97.27 -10.00 100.00 250 11.94 102.02 -10.00 100.00 255 11.56 106.71 -10.00 100.00 260 11.13 111.36 -10.00 100.00 265 11.19 116.04 -10.00 100.00 270 10.26 120.50 -10.00 100.00 275 9.84 124.96 -10.00 100.00 280 9.15 129.25 -10.00 100.00 285 8.70 133.47 -10.00 100.00 290 8.17 137.50 -10.00 100.00 295 7.34 141.16 -10.00 100.00 300 6.75 144.62 -10.00 100.00 305 6.02 147.59 -10.00 100.00 310 5.23 149.97 -10.00 100.00 315 4.71 151.91 -10.00 100.00 320 3.56 152.50 -10.00 100.00 325 2.50 152.27 -10.00 100.00 330 1.17 150.92 -10.00 100.00 335 0.24 149.23 -10.00 132.64 340 0.00 147.54 -10.00 136.18 345 0.00 145.49 -10.00 136.18 350 0.36 143.22 -10.00 124.64 355 0.59 140.40 -10.00 110.37 Frequency Coordination and Interference Analysis Report 02/09/2017 Page 10 of 11

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: February 09, 2017 Frequency Coordination and Interference Analysis Report 02/09/2017 Page 11 of 11


Document Created: 2017-04-13 16:50:02
Document Modified: 2017-04-13 16:50:02
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