Attachment Frequency Report

This document pretains to SES-MOD-20170418-00408 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2017041800408_1205474

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for HUGHES NETWORK SYSTEMS LIMITED GILBERT, AZ 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 .................................................................................................. 7 5. CERTIFICATION ......................................................................................................................................... 11 Frequency Coordination and Interference Analysis Report 03/03/2017 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 03/03/2017 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. 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 Alltel Comm Southwest Holdings Inc. No other carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 03/03/2017 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 02/15/2017. Company AT&T Corp. AT&T Mobility Spectrum LLC - Arizona Affiniti LLC Agua Fria Unified School District Alltel Comm Southwest Holdings Inc. American Medical Response, Inc. Arizona Board of Regents Arizona St Univ Arizona State University - Tempe Avondale Police Department BNCCORP INC. Banner Health Bluewire LLC Camp Verde Fire District Casa Grande Union HS Distrist Central Yavapai Fire District City of Avondale City of Casa Grande City of Glendale Water Services Wireless City of Surprise City of Tucson IT Department Clearwire Spectrum Holdings III, LLC Commnet Four Corners, LLC Conterra Ultra Broadband, LLC Coppernet Systems, Inc. Creative Airtime Services DW Tower, LLC Deer Valley Unified School District Dysart Unified School District El Paso Natural Gas Company, LLC FibAire Communications, LLC GTT America LLC Gila River Cellular General Partnership Global Telecom & Technology Americas Global Telecom & Technology Americas, In Golder Ranch Fire District GovNET Licenses LLC Gutierrez-Palmenberg, Inc. J.O. Combs Elementary School District Littleton Unified School District Maricopa County Wireless Systems Frequency Coordination and Interference Analysis Report 03/03/2017 Page 5 of 11

Mesa, City of Multimedia Holdings Corporation NW Communications of Phoenix, Inc. New Cingular Wireless PCS LLC - AZ Next Level Solutions Nextel License Holdings 4 Inc. Nextlink Wireless, LLC North West Fire District Paradise Valley Unified School District Pendergast School District #92 Peoria, City of Phoenix, City of Qwest Corporation Rio Verde Wireless, LLC SWWG, LLC Saddleback Communications Scottsdale Medical Imaging Scottsdale, City of Shamrock Foods Company Silver Bell Mining LLC Simply Bits, LLC Skyview Networks Spanish Independent Broadcast Network Sparkplug Southwest, LLC SpeedConnect, LLC Sprint PCS Sprint Spectrum L.P. Sprint Spectrum LP DBA Sprint PCS Sun City West Fire District Sun Health Corporation T-Mobile License LLC Telink Networks SW, LLC Tempe Union High School District #213 Tempe, City of Town of Florence Town of Gilbert, AZ Treatch, James E Union Pacific Railroad Company Univision Radio License Corporation Verizon Wireless(VAW) LLC-AZ/CO/NM/NV/UT Western Broadband, LLC Western WiMax, LLC XO Communications, LLC Frequency Coordination and Interference Analysis Report 03/03/2017 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 03/03/2017 Page 7 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 03/03/2017 Job Number: 170215COMSGE10 Administrative Information Status ENGINEER PROPOSAL Call Sign E150076 Licensee Code HUNESY Licensee Name HUGHES NETWORK SYSTEMS LIMITED Site Information GILBERT, AZ Venue Name Latitude (NAD 83) 33° 21' 56.1" N Longitude (NAD 83) 111° 48' 49.1" W Climate Zone A Rain Zone 5 Ground Elevation (AMSL) 372.21 m / 1221.2 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 97.1° W to 97.1° West Longitude Azimuth Range 154.5° to 154.5° Corresponding Elevation Angles 48.1° / 48.1° Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Information Receive - FCC32 Transmit - FCC32 Manufacturer GD Satcom GD Satcom Model 9.2 meter 9.2 meter Gain / Diameter 62.7 dBi / 9.2 m 66.1 dBi / 9.2 m 3-dB / 15-dB Beamwidth 1.00° / 2.00° 0.09° / 0.18° Max Available RF Power (dBW/4 kHz) -38.0 (dBW/MHz) -14.0 Maximum EIRP (dBW/4 kHz) 28.1 (dBW/MHz) 52.1 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 136.2 km / 84.6 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 8 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Coordination Values GILBERT, AZ Licensee Name HUGHES NETWORK SYSTEMS LIMITED Latitude (NAD 83) 33° 21' 56.1" N Longitude (NAD 83) 111° 48' 49.1" W Ground Elevation (AMSL) 372.21 m / 1221.2 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model GD Satcom 9.2 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 -38.0 (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 0.00 127.08 -10.00 136.18 -10.00 100.00 5 0.00 125.13 -10.00 136.18 -10.00 100.00 10 0.00 122.94 -10.00 136.18 -10.00 100.00 15 0.00 120.52 -10.00 136.18 -10.00 100.00 20 0.00 117.91 -10.00 136.18 -10.00 100.00 25 0.00 115.13 -10.00 136.18 -10.00 100.00 30 0.00 112.22 -10.00 136.18 -10.00 100.00 35 0.00 109.19 -10.00 136.18 -10.00 100.00 40 0.00 106.07 -10.00 136.18 -10.00 100.00 45 0.00 102.87 -10.00 136.18 -10.00 100.00 50 0.00 99.62 -10.00 136.18 -10.00 100.00 55 0.00 96.32 -10.00 136.18 -10.00 100.00 60 0.00 92.99 -10.00 136.18 -10.00 100.00 65 0.00 89.65 -10.00 136.18 -10.00 100.00 70 0.00 86.32 -10.00 136.18 -10.00 100.00 75 0.00 82.99 -10.00 136.18 -10.00 100.00 80 0.00 79.70 -10.00 136.18 -10.00 100.00 85 0.00 76.46 -10.00 136.18 -10.00 100.00 90 0.00 73.27 -10.00 136.18 -10.00 100.00 95 0.00 70.17 -10.00 136.18 -10.00 100.00 100 0.00 67.16 -10.00 136.18 -10.00 100.00 105 0.00 64.28 -10.00 136.18 -10.00 100.00 110 0.00 61.53 -10.00 136.18 -10.00 100.00 115 0.00 58.96 -10.00 136.18 -10.00 100.00 120 0.00 56.59 -10.00 136.18 -10.00 100.00 125 0.00 54.44 -10.00 136.18 -10.00 100.00 130 0.00 52.55 -10.00 136.18 -10.00 100.00 135 0.00 50.96 -10.00 136.18 -10.00 100.00 140 0.00 49.70 -10.00 136.18 -10.00 100.00 145 0.00 48.78 -10.00 136.18 -10.00 100.00 150 0.00 48.24 -10.00 136.18 -10.00 100.00 155 0.00 48.09 -10.00 136.18 -10.00 100.00 160 0.00 48.32 -10.00 136.18 -10.00 100.00 165 0.00 48.94 -10.00 136.18 -10.00 100.00 170 0.00 49.93 -10.00 136.18 -10.00 100.00 175 0.00 51.27 -10.00 136.18 -10.00 100.00 180 0.00 52.92 -10.00 136.18 -10.00 100.00 185 0.00 54.87 -10.00 136.18 -10.00 100.00 Frequency Coordination and Interference Analysis Report 03/03/2017 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 GILBERT, AZ Licensee Name HUGHES NETWORK SYSTEMS LIMITED Latitude (NAD 83) 33° 21' 56.1" N Longitude (NAD 83) 111° 48' 49.1" W Ground Elevation (AMSL) 372.21 m / 1221.2 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model GD Satcom 9.2 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 -38.0 (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 57.06 -10.00 136.18 -10.00 100.00 195 0.00 59.48 -10.00 136.18 -10.00 100.00 200 0.00 62.09 -10.00 136.18 -10.00 100.00 205 0.00 64.87 -10.00 136.18 -10.00 100.00 210 0.00 67.78 -10.00 136.18 -10.00 100.00 215 0.00 70.81 -10.00 136.18 -10.00 100.00 220 0.00 73.93 -10.00 136.18 -10.00 100.00 225 0.00 77.13 -10.00 136.18 -10.00 100.00 230 0.00 80.38 -10.00 136.18 -10.00 100.00 235 0.00 83.68 -10.00 136.18 -10.00 100.00 240 0.00 87.01 -10.00 136.18 -10.00 100.00 245 0.00 90.35 -10.00 136.18 -10.00 100.00 250 0.00 93.68 -10.00 136.18 -10.00 100.00 255 0.00 97.01 -10.00 136.18 -10.00 100.00 260 0.00 100.30 -10.00 136.18 -10.00 100.00 265 0.00 103.54 -10.00 136.18 -10.00 100.00 270 0.00 106.73 -10.00 136.18 -10.00 100.00 275 0.00 109.83 -10.00 136.18 -10.00 100.00 280 0.00 112.84 -10.00 136.18 -10.00 100.00 285 0.00 115.72 -10.00 136.18 -10.00 100.00 290 0.00 118.47 -10.00 136.18 -10.00 100.00 295 0.00 121.04 -10.00 136.18 -10.00 100.00 300 0.00 123.41 -10.00 136.18 -10.00 100.00 305 0.00 125.56 -10.00 136.18 -10.00 100.00 310 0.00 127.45 -10.00 136.18 -10.00 100.00 315 0.00 129.04 -10.00 136.18 -10.00 100.00 320 0.00 130.30 -10.00 136.18 -10.00 100.00 325 0.00 131.22 -10.00 136.18 -10.00 100.00 330 0.00 131.76 -10.00 136.18 -10.00 100.00 335 0.00 131.91 -10.00 136.18 -10.00 100.00 340 0.00 131.68 -10.00 136.18 -10.00 100.00 345 0.00 131.06 -10.00 136.18 -10.00 100.00 350 0.00 130.07 -10.00 136.18 -10.00 100.00 355 0.00 128.73 -10.00 136.18 -10.00 100.00 Frequency Coordination and Interference Analysis Report 03/03/2017 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: March 03, 2017 Frequency Coordination and Interference Analysis Report 03/03/2017 Page 11 of 11


Document Created: 2017-04-13 16:28:42
Document Modified: 2017-04-13 16:28:42
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