Attachment Frequency Report

This document pretains to SES-MOD-20170418-00402 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2017041800402_1205536

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for EchoStar Corporation SPOKANE, WA Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 February 23, 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 02/23/2017 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 02/23/2017 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 02/23/2017 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 02/09/2017. Company Affiniti LLC Bonner, County of Idaho Chickadee Wireless, Inc Confederated Tribes of the Colville Res. Conterra Ultra Broadband, LLC Cutting Edge Communications, Inc. Desert Winds Wireless EcliptixNet Broadband, Inc. First Step Internet, LLC Friends of KSPS GW Networks J & R Electronics Inc KSKN Television, Inc. King Broadcasting Company - KREM TV MOODY BIBLE INSTITUTE Mobilisa Enterprise Wireless NEXTEL WEST CORPORATION New Cingular Wireless PCS LLC-Washington Newmax, LLC Nez Perce Tribe PACIFIC WIRELESS SYSTEMS LLC PANHANDLE STATE BANK Providence Health & Services Ptera Wireless, Inc. Shoshone County Medical Center Company Sprint Spectrum L.P. Startouch, Inc. Summit Towers LLC T-MOBILE LIC LLC - VOICESTREAM PCS BTA I T-Mobile License LLC Verizon Wireless (VAW) LLC - (WA) Verizon Wireless (VAW) LLC -CO/ID/MT/WY Washington State Dept of Natural Resourc Washington State University Whitman County Fire District #7 Wired or Wireless, Inc. Frequency Coordination and Interference Analysis Report 02/23/2017 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 02/23/2017 Page 6 of 10

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 02/09/2017 Job Number: 170209COMSGE08 Administrative Information Status ENGINEER PROPOSAL Call Sign E070275 Licensee Code ZECHOS Licensee Name EchoStar Corporation Site Information SPOKANE, WA Venue Name Latitude (NAD 83) 47° 35' 33.5" N Longitude (NAD 83) 117° 33' 5.1" W Climate Zone A Rain Zone 5 Ground Elevation (AMSL) 741.86 m / 2433.9 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 61° W to 148° West Longitude Azimuth Range 116.0° to 218.5° Corresponding Elevation Angles 13.4° / 27.9° Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Information Receive - FCC32 Transmit - FCC32 Manufacturer Vertex Vertex Model 9 Meter 9 Meter Gain / Diameter 58.6 dBi / 9.0 m 62.9 dBi / 9.0 m 3-dB / 15-dB Beamwidth 0.20° / 0.40° 0.10° / 0.30° Max Available RF Power (dBW/4 kHz) -5.7 (dBW/MHz) 18.3 Maximum EIRP (dBW/4 kHz) 57.2 (dBW/MHz) 81.2 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 12.2 GHz Transmit 17.3 GHz Emission / Frequency Range (MHz) 1M50G2D - 24M0M1F / 12200.0 - 12700.0 1M50G2D - 24M0M1F / 17300.0 - 17800.0 Max Great Circle Coordination Distance 295.5 km / 183.6 mi 186.6 km / 115.9 mi Precipitation Scatter Contour Radius 368.1 km / 228.7 mi 100.0 km / 62.1 mi Frequency Coordination and Interference Analysis Report 02/23/2017 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 SPOKANE, WA Licensee Name EchoStar Corporation Latitude (NAD 83) 47° 35' 33.5" N Longitude (NAD 83) 117° 33' 5.1" W Ground Elevation (AMSL) 741.86 m / 2433.9 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model Vertex 9 Meter Antenna Mode Receive 12.2 GHz Transmit 17.3 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 -5.7 (dBW/4 kHz) Receive 12.2 GHz Transmit 17.3 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 0 0.00 115.25 -10.00 227.19 -10.00 136.02 5 0.00 110.41 -10.00 227.19 -10.00 136.02 10 0.00 105.56 -10.00 227.19 -10.00 136.02 15 0.00 100.70 -10.00 227.19 -10.00 136.02 20 0.00 95.84 -10.00 227.19 -10.00 136.02 25 0.00 90.98 -10.00 227.19 -10.00 136.02 30 0.00 86.11 -10.00 227.19 -10.00 136.02 35 0.00 81.25 -10.00 227.19 -10.00 136.02 40 0.00 76.39 -10.00 227.19 -10.00 136.02 45 0.00 71.54 -10.00 227.19 -10.00 136.02 50 0.00 66.69 -10.00 227.19 -10.00 136.02 55 0.00 61.86 -10.00 227.19 -10.00 136.02 60 0.00 57.04 -10.00 227.19 -10.00 136.02 65 0.00 52.25 -10.00 227.19 -10.00 136.02 70 0.00 47.48 -9.91 227.56 -9.91 136.27 75 0.00 42.76 -8.78 232.60 -8.78 139.65 80 0.00 38.09 -7.52 238.35 -7.52 143.55 85 0.00 33.50 -6.12 245.48 -6.12 148.11 90 0.00 29.02 -4.57 253.11 -4.57 153.47 95 0.00 24.73 -2.83 261.88 -2.83 159.79 100 0.00 20.74 -0.92 271.85 -0.92 168.55 105 0.00 17.24 1.08 282.63 1.08 176.16 110 0.00 14.63 2.87 292.58 2.87 182.95 115 0.00 13.40 3.82 295.12 3.82 186.57 120 0.00 13.93 3.40 295.55 3.40 184.95 125 0.00 16.06 1.86 286.89 1.86 179.09 130 0.00 18.94 0.07 277.11 0.07 172.29 135 0.00 21.68 -1.40 269.31 -1.40 166.72 140 0.31 24.00 -2.50 252.56 -2.50 150.14 145 1.01 25.76 -3.27 203.95 -3.27 109.77 150 1.27 27.66 -4.05 195.94 -4.05 101.00 155 1.51 29.31 -4.68 186.27 -4.68 100.00 160 1.19 31.20 -5.35 192.63 -5.35 100.00 165 0.77 32.86 -5.92 203.94 -5.92 112.69 170 0.71 33.85 -6.24 205.32 -6.24 114.32 175 0.98 34.15 -6.34 194.68 -6.34 102.40 180 1.41 33.91 -6.26 181.82 -6.26 100.00 185 1.62 33.52 -6.13 176.15 -6.13 100.00 Frequency Coordination and Interference Analysis Report 02/23/2017 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 SPOKANE, WA Licensee Name EchoStar Corporation Latitude (NAD 83) 47° 35' 33.5" N Longitude (NAD 83) 117° 33' 5.1" W Ground Elevation (AMSL) 741.86 m / 2433.9 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model Vertex 9 Meter Antenna Mode Receive 12.2 GHz Transmit 17.3 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 -5.7 (dBW/4 kHz) Receive 12.2 GHz Transmit 17.3 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 190 1.59 32.99 -5.96 177.97 -5.96 100.00 195 1.54 32.12 -5.67 180.88 -5.67 100.00 200 1.58 30.82 -5.22 181.76 -5.22 100.00 205 1.58 29.25 -4.65 184.37 -4.65 100.00 210 1.37 27.73 -4.08 192.99 -4.08 100.00 215 0.90 27.17 -3.85 206.08 -3.85 112.43 220 0.82 27.09 -3.82 210.38 -3.82 116.32 225 0.62 27.95 -4.16 218.76 -4.16 124.08 230 0.00 29.96 -4.91 251.39 -4.91 152.25 235 0.34 31.75 -5.54 233.77 -5.54 137.15 240 0.70 34.12 -6.32 205.54 -6.32 114.61 245 0.59 37.29 -7.29 206.66 -7.29 116.64 250 0.00 41.07 -8.34 234.58 -8.34 140.99 255 0.00 44.70 -9.26 230.45 -9.26 138.20 260 0.00 48.52 -10.00 227.19 -10.00 136.02 265 0.00 52.50 -10.00 227.19 -10.00 136.02 270 0.00 56.59 -10.00 227.19 -10.00 136.02 275 0.00 60.78 -10.00 227.19 -10.00 136.02 280 0.00 65.03 -10.00 227.19 -10.00 136.02 285 0.00 69.34 -10.00 227.19 -10.00 136.02 290 0.00 73.69 -10.00 227.19 -10.00 136.02 295 0.00 78.07 -10.00 227.19 -10.00 136.02 300 0.00 82.47 -10.00 227.19 -10.00 136.02 305 0.00 86.89 -10.00 227.19 -10.00 136.02 310 0.00 91.31 -10.00 227.19 -10.00 136.02 315 0.00 95.72 -10.00 227.19 -10.00 136.02 320 0.00 100.13 -10.00 227.19 -10.00 136.02 325 0.00 104.52 -10.00 227.19 -10.00 136.02 330 0.00 108.89 -10.00 227.19 -10.00 136.02 335 0.00 113.21 -10.00 227.19 -10.00 136.02 340 0.00 117.49 -10.00 227.19 -10.00 136.02 345 0.00 121.71 -10.00 227.19 -10.00 136.02 350 0.00 124.89 -10.00 227.19 -10.00 136.02 355 0.00 120.08 -10.00 227.19 -10.00 136.02 Frequency Coordination and Interference Analysis Report 02/23/2017 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: February 23, 2017 Frequency Coordination and Interference Analysis Report 02/23/2017 Page 10 of 10


Document Created: 2017-02-23 09:05:22
Document Modified: 2017-02-23 09:05:22
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