Attachment Frequency Report

This document pretains to SES-MOD-20170418-00401 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2017041800401_1205774

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for EchoStar Corporation QUICKSBURG, VA 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 ALLEGANY COUNTY GOVERNMENT Blaze Broadband CONXX, Inc. ECW Wireless, LLC NRAO Green Bank Observatory Rural Broadband Network Services LLC Shenandoah Personal Communications, LLC Telegia Communications Inc. Virginia Cellular LLC Virginia Everywhere, LLC 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: 170209COMSGE09 Administrative Information Status ENGINEER PROPOSAL Call Sign E070273 Licensee Code ZECHOS Licensee Name EchoStar Corporation Site Information QUICKSBURG, VA Venue Name Latitude (NAD 83) 38° 43' 24.6" N Longitude (NAD 83) 78° 40' 1.4" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 284.27 m / 932.7 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 61° W to 148° West Longitude Azimuth Range 153.0° to 256.7° Corresponding Elevation Angles 41.5° / 7.4° 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 359.5 km / 223.4 mi 199.0 km / 123.6 mi Precipitation Scatter Contour Radius 561.4 km / 348.8 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 QUICKSBURG, VA Licensee Name EchoStar Corporation Latitude (NAD 83) 38° 43' 24.6" N Longitude (NAD 83) 78° 40' 1.4" W Ground Elevation (AMSL) 284.27 m / 932.7 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 1.20 103.20 -10.00 170.47 -10.00 100.00 5 1.02 108.16 -10.00 176.53 -10.00 100.00 10 0.93 113.12 -10.00 180.86 -10.00 100.00 15 1.01 118.09 -10.00 176.99 -10.00 100.00 20 0.75 121.11 -10.00 190.14 -10.00 102.43 25 0.50 117.69 -10.00 203.19 -10.00 114.00 30 0.30 114.20 -10.00 217.97 -10.00 129.35 35 0.27 110.68 -10.00 220.04 -10.00 129.84 40 0.00 107.03 -10.00 227.19 -10.00 136.02 45 0.00 103.39 -10.00 227.19 -10.00 136.02 50 0.00 99.71 -10.00 227.19 -10.00 136.02 55 0.00 96.00 -10.00 227.19 -10.00 136.02 60 0.35 92.27 -10.00 213.01 -10.00 125.08 65 1.04 88.49 -10.00 175.84 -10.00 100.00 70 1.62 84.65 -10.00 154.28 -10.00 100.00 75 3.00 80.65 -10.00 124.61 -10.00 100.00 80 3.80 76.64 -10.00 111.02 -10.00 100.00 85 4.17 72.69 -10.00 105.57 -10.00 100.00 90 4.20 68.85 -10.00 105.24 -10.00 100.00 95 3.23 65.44 -10.00 120.62 -10.00 100.00 100 2.06 62.33 -10.00 141.87 -10.00 100.00 105 2.61 58.64 -10.00 130.50 -10.00 100.00 110 3.12 55.04 -10.00 122.44 -10.00 100.00 115 3.28 51.78 -10.00 119.80 -10.00 100.00 120 3.36 48.75 -10.00 118.33 -10.00 100.00 125 3.46 45.97 -9.56 118.26 -9.56 100.00 130 2.92 44.00 -9.09 129.42 -9.09 100.00 135 2.33 42.52 -8.72 141.44 -8.72 100.00 140 1.62 41.63 -8.49 161.78 -8.49 100.00 145 1.07 41.10 -8.35 182.46 -8.35 100.00 150 0.87 40.74 -8.25 191.86 -8.25 102.02 155 0.49 41.07 -8.34 207.63 -8.34 118.65 160 0.42 41.58 -8.47 213.07 -8.47 123.65 165 0.66 42.29 -8.65 200.53 -8.65 110.17 170 0.94 43.21 -8.89 185.37 -8.89 100.00 175 1.10 43.80 -9.04 178.34 -9.04 100.00 180 1.23 43.93 -9.07 174.26 -9.07 100.00 185 1.55 43.36 -8.93 161.82 -8.93 100.00 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 QUICKSBURG, VA Licensee Name EchoStar Corporation Latitude (NAD 83) 38° 43' 24.6" N Longitude (NAD 83) 78° 40' 1.4" W Ground Elevation (AMSL) 284.27 m / 932.7 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 2.13 42.06 -8.60 146.49 -8.60 100.00 195 1.96 41.02 -8.33 151.83 -8.33 100.00 200 1.73 39.59 -7.94 160.82 -7.94 100.00 205 1.27 37.95 -7.48 180.40 -7.48 100.00 210 1.21 35.60 -6.79 185.38 -6.79 100.00 215 1.06 33.02 -5.97 193.63 -5.97 101.08 220 1.64 29.64 -4.80 182.00 -4.80 100.00 225 2.31 26.01 -3.38 170.51 -3.38 100.00 230 2.77 22.39 -1.75 167.72 -1.75 100.00 235 2.89 18.89 0.10 174.75 0.10 100.00 240 2.50 15.61 2.17 193.78 2.17 100.00 245 2.02 12.28 4.77 213.23 4.77 109.48 250 1.51 8.90 8.26 247.34 8.26 132.24 255 1.80 5.81 12.89 359.50 12.89 198.97 260 2.15 6.15 12.28 252.68 12.28 132.31 265 2.70 9.49 7.57 212.42 7.57 106.38 270 2.84 14.01 3.34 192.01 3.34 100.00 275 3.72 18.63 0.25 153.35 0.25 100.00 280 2.76 23.70 -2.37 162.08 -2.37 100.00 285 3.18 28.56 -4.39 142.23 -4.39 100.00 290 3.01 33.53 -6.14 138.08 -6.14 100.00 295 3.01 38.49 -7.63 131.98 -7.63 100.00 300 3.01 43.45 -8.95 128.32 -8.95 100.00 305 2.95 48.43 -10.00 125.62 -10.00 100.00 310 2.89 53.41 -10.00 126.66 -10.00 100.00 315 2.78 58.39 -10.00 128.72 -10.00 100.00 320 2.95 63.36 -10.00 125.54 -10.00 100.00 325 2.46 68.36 -10.00 133.34 -10.00 100.00 330 2.87 73.33 -10.00 126.93 -10.00 100.00 335 2.25 78.33 -10.00 137.73 -10.00 100.00 340 1.82 83.31 -10.00 148.29 -10.00 100.00 345 1.69 88.29 -10.00 152.31 -10.00 100.00 350 1.22 93.26 -10.00 169.78 -10.00 100.00 355 1.08 98.23 -10.00 174.72 -10.00 100.00 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

March 21, 2017 NRQZ ID: 10660_09FEB2017 Attn. Regulatory Group EchoStar Operating LLC 100 Inverness Terrace East Englewood, CO 80112 Application Reason/Purpose Coordination prior to FCC application submission File Number Shall be provided by applicant Applicant Name Addressee Call Sign E070273 Site Name or Loc Quicksburg, VA Reference Copy Frequency Coordinator Comsearch 170209COMSGE09 Previous NRAO Coordination No. NRQZ ID None – New paths Current NRAO Coordination No. NRQZ ID 10660_09FEB2017 Dear Applicant: The National Radio Quiet Zone (NRQZ) has evaluated these facilities to determine the interference impact on our highly sensitive radio astronomy operations. The National Radio Astronomy Observatory (NRAO) site located at Green Bank, Pocahontas County, WV, has no objections to this frequency assignment. The Sugar Grove Research Station, formerly the Naval Radio Research Observatory (NRRO), located at Sugar Grove, Pendleton County, WV has no objections to this frequency assignment. This letter constitutes coordination of assignment in the National Radio Quiet Zone as required by the FCC Rules and Regulations 47CFR1.924(a). If I may be of assistance, please feel free to contact me. Sincerest regards, Paulette W. Woody NRQZ Office Administrator Cc: Gary Edwards file: 10660.docx Attachments: Comsearch Earth Station Data Sheet This concurrence remains valid provided the data contained within is consistent with the applicant’s filing at the Commission. Any discrepancy in system parameters, such as geographical coordinates (Latitude, Longitude, AMSL), antenna height above ground level (AGL), antenna gains or directivity (orientation), channel (operating frequency or frequency bands), emission type, and power requires re-coordination. If the Commission has questions regarding the validity of this or any concurrence, please direct inquiries to nrqz@nrao.edu or 304-456-2107.

Page 1 of 3 COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726­5662 http://www.comsearch.com Date: 02/09/2017 Job Number: 170209COMSGE09 Administrative Information Status ENGINEER PROPOSAL Call Sign E070273 Licensee Code ZECHOS Licensee Name EchoStar Corporation Site Information QUICKSBURG, VA Venue Name Latitude (NAD 83) 38° 43' 24.6" N Longitude (NAD 83) 78° 40' 1.4" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 284.27 m / 932.7 ft Link Information Reference Copy Satellite Type Geostationary Mode TR ­ Transmit­Receive Modulation Digital Satellite Arc 61° W to 148° West Longitude Azimuth Range 153.0° to 256.7° Corresponding Elevation Angles 41.5° / 7.4° 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 3­dB / 15­dB 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 359.5 km / 223.4 mi 199.0 km / 123.6 mi Precipitation Scatter Contour Radius 561.4 km / 348.8 mi 100.0 km / 62.1 mi


Document Created: 2017-04-14 16:24:41
Document Modified: 2017-04-14 16:24:41
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