Attachment Exhibit B

This document pretains to SES-MOD-20151023-00762 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2015102300762_1112646

Exhibit B FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for Intelsat License LLC CASTLE ROCK, CO (E040174) Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 September 24, 2015

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 09/24/2015 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 09/24/2015 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 09/24/2015 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 08/26/2015. Company AT&T Communications of Mountain States AT&T Mobility Spectrum LLC - CO AirLife Denver Arvada Police Dept. BNSF Railway Company Black Hawk Police Department Black Hills Corporation Boulder, County of CBS Communication Services Inc CBS Television Stations Cellular Inc. Network Corporation City of Aurora City of Colorado Springs City of Lakewood, CO Colorado Interstate Gas Company Colorado Springs Utilities County of Pueblo Douglas County Sheriff's Office Entravision Holdings, LLC FONES WEST DIGITAL SYSTEMS INC. Gilpin County Sheriff's Office Gogo LLC Gray Television Licensee, LLC Infrastructure Networks, Inc. Intermountain Rural Electric Association Kellin Communications Live Wire Networks, Inc. MHO Networks Multimedia Holdings Corporation NE Colorado Cellular, Inc. New Cingular Wireless PCS LLC -Colorado Nex-Tech Wireless, LLC Olympic Wireless, LLC Qwest Corporation Roggen Telephone Enterprises, Inc. Sangre de Cristo Communications, LLC Sprint Communications Company, LP Sprint Spectrum LP DBA Sprint PCS Sprintcom, Inc State of Colorado Frequency Coordination and Interference Analysis Report 09/24/2015 Page 5 of 11

Tallgrass Operations, LLC Tri-State Generation & Transmission Assn Tribune Broadcasting Denver License, LLC University Corp for Atmospheric Research Verizon Wireless (VAW) LLC -CO/ID/MT/WY Xcel Energy Services, Inc. Frequency Coordination and Interference Analysis Report 09/24/2015 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 09/24/2015 Page 7 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 09/24/2015 Job Number: 150826COMSGE01 Administrative Information Status ENGINEER PROPOSAL Call Sign E040174 Licensee Code INTELS Licensee Name Intelsat License LLC Site Information CASTLE ROCK, CO Venue Name CC5 Latitude (NAD 83) 39° 16' 33.0" N Longitude (NAD 83) 104° 48' 34.0" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 2088.0 m / 6850.4 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 50° W to 60° West Longitude Azimuth Range 114.1° to 122.5° Corresponding Elevation Angles 18.2° / 25.5° Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Information Receive - FCC32 Transmit - FCC32 Manufacturer Vertex Vertex Model 9.0 FMC 9.0 FMC Gain / Diameter 50.2 dBi / 9.0 m 53.8 dBi / 9.0 m 3-dB / 15-dB Beamwidth 0.60° / 1.20° 0.20° / 0.40° Max Available RF Power (dBW/4 kHz) 3.7 (dBW/MHz) 27.7 Maximum EIRP (dBW/4 kHz) 57.5 (dBW/MHz) 81.5 Interference Objectives: Long Term -156.0 dBW/MHz 20% -154.0 dBW/4 kHz 20% Short Term -146.0 dBW/MHz 0.01% -131.0 dBW/4 kHz 0.0025% Frequency Information Receive 4.0 GHz Transmit 6.1 GHz Emission / Frequency Range (MHz) 64K0G7W - 850KG7W / 3700.0 - 4200.0 850KG7W / 6170.0 - 6180.0 Max Great Circle Coordination Distance 358.3 km / 222.6 mi 235.9 km / 146.6 mi Precipitation Scatter Contour Radius 508.4 km / 315.9 mi 272.6 km / 169.4 mi Frequency Coordination and Interference Analysis Report 09/24/2015 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 CASTLE ROCK, CO Licensee Name Intelsat License LLC Latitude (NAD 83) 39° 16' 33.0" N Longitude (NAD 83) 104° 48' 34.0" W Ground Elevation (AMSL) 2088.0 m / 6850.4 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model Vertex 9 Meter Antenna Mode Receive 4.0 GHz Transmit 6.1 GHz Interference Objectives: Long Term -156.0 dBW/MHz 20% -154.0 dBW/4 kHz 20% Short Term -146.0 dBW/MHz 0.01% -131.0 dBW/4 kHz 0.0025% Max Available RF Power 3.7 (dBW/4 kHz) Receive 4.0 GHz Transmit 6.1 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 0 5.33 113.41 -10.00 131.66 -10.00 100.00 5 4.79 108.52 -10.00 136.37 -10.00 100.00 10 3.89 103.61 -10.00 150.16 -10.00 100.00 15 4.01 98.78 -10.00 147.84 -10.00 100.00 20 3.85 93.93 -10.00 150.99 -10.00 100.00 25 3.58 89.09 -10.00 156.66 -10.00 100.00 30 3.74 84.25 -10.00 153.07 -10.00 100.00 35 3.35 79.43 -10.00 161.69 -10.00 100.00 40 2.87 74.64 -10.00 174.51 -10.00 100.00 45 2.58 69.87 -10.00 181.34 -10.00 101.35 50 2.50 65.10 -10.00 183.03 -10.00 102.77 55 1.71 60.47 -10.00 202.42 -10.00 119.86 60 1.36 55.83 -10.00 209.49 -10.00 128.53 65 0.54 51.37 -10.00 246.99 -10.00 160.52 70 0.00 46.96 -9.79 286.60 -9.79 196.16 75 0.00 42.48 -8.70 293.65 -8.70 200.31 80 0.00 38.11 -7.53 301.51 -7.53 204.81 85 0.00 33.88 -6.25 310.27 -6.25 208.09 90 0.00 29.86 -4.88 320.56 -4.88 213.56 95 0.23 25.99 -3.37 327.62 -3.37 216.99 100 0.00 22.88 -1.99 341.61 -1.99 225.85 105 0.00 20.29 -0.68 351.39 -0.68 231.71 110 0.00 18.67 0.22 358.31 0.22 235.91 115 0.28 17.98 0.63 350.75 0.63 229.46 120 0.36 18.81 0.14 336.51 0.14 219.31 125 0.30 20.91 -1.01 335.15 -1.01 219.74 130 0.52 23.66 -2.35 298.22 -2.35 196.72 135 0.43 27.02 -3.79 298.53 -3.79 198.43 140 0.55 30.04 -4.94 277.82 -4.94 183.61 145 1.02 32.74 -5.88 242.21 -5.88 152.14 150 1.54 35.82 -6.85 219.66 -6.85 133.76 155 1.39 39.64 -7.95 218.65 -7.95 133.68 160 1.46 43.54 -8.97 211.37 -8.97 129.47 165 1.44 47.66 -9.95 207.36 -9.95 126.58 170 1.53 51.86 -10.00 204.72 -10.00 124.19 175 1.93 56.07 -10.00 196.51 -10.00 114.51 180 2.33 60.38 -10.00 187.09 -10.00 106.24 185 2.57 64.81 -10.00 181.35 -10.00 101.36 Frequency Coordination and Interference Analysis Report 09/24/2015 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 CASTLE ROCK, CO Licensee Name Intelsat License LLC Latitude (NAD 83) 39° 16' 33.0" N Longitude (NAD 83) 104° 48' 34.0" W Ground Elevation (AMSL) 2088.0 m / 6850.4 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model Vertex 9 Meter Antenna Mode Receive 4.0 GHz Transmit 6.1 GHz Interference Objectives: Long Term -156.0 dBW/MHz 20% -154.0 dBW/4 kHz 20% Short Term -146.0 dBW/MHz 0.01% -131.0 dBW/4 kHz 0.0025% Max Available RF Power 3.7 (dBW/4 kHz) Receive 4.0 GHz Transmit 6.1 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 190 2.96 69.29 -10.00 172.38 -10.00 100.00 195 3.16 73.84 -10.00 165.87 -10.00 100.00 200 3.18 78.44 -10.00 165.60 -10.00 100.00 205 2.89 83.07 -10.00 173.93 -10.00 100.00 210 2.65 87.69 -10.00 179.53 -10.00 100.00 215 2.70 92.30 -10.00 178.33 -10.00 100.00 220 3.32 96.93 -10.00 162.33 -10.00 100.00 225 3.28 101.55 -10.00 163.09 -10.00 100.00 230 3.48 106.18 -10.00 158.67 -10.00 100.00 235 3.42 110.76 -10.00 160.13 -10.00 100.00 240 3.40 115.33 -10.00 160.50 -10.00 100.00 245 3.51 119.88 -10.00 158.04 -10.00 100.00 250 3.53 124.37 -10.00 157.70 -10.00 100.00 255 3.67 128.84 -10.00 154.56 -10.00 100.00 260 3.61 133.17 -10.00 155.90 -10.00 100.00 265 3.77 137.48 -10.00 152.51 -10.00 100.00 270 3.98 141.69 -10.00 148.31 -10.00 100.00 275 4.00 145.63 -10.00 147.95 -10.00 100.00 280 4.02 149.30 -10.00 147.58 -10.00 100.00 285 4.64 153.05 -10.00 138.36 -10.00 100.00 290 5.69 156.73 -10.00 128.19 -10.00 100.00 295 5.86 159.06 -10.00 126.58 -10.00 100.00 300 5.20 159.59 -10.00 132.85 -10.00 100.00 305 5.01 159.41 -10.00 134.71 -10.00 100.00 310 5.30 158.55 -10.00 131.88 -10.00 100.00 315 5.39 155.58 -10.00 131.09 -10.00 100.00 320 4.95 151.07 -10.00 134.25 -10.00 100.00 325 4.63 146.47 -10.00 138.61 -10.00 100.00 330 4.54 141.87 -10.00 139.81 -10.00 100.00 335 4.47 137.20 -10.00 140.86 -10.00 100.00 340 5.31 132.67 -10.00 131.88 -10.00 100.00 345 5.69 127.96 -10.00 128.16 -10.00 100.00 350 5.73 123.14 -10.00 127.83 -10.00 100.00 355 5.67 118.30 -10.00 128.40 -10.00 100.00 Frequency Coordination and Interference Analysis Report 09/24/2015 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: September 24, 2015 Frequency Coordination and Interference Analysis Report 09/24/2015 Page 11 of 11


Document Created: 2015-10-23 09:15:02
Document Modified: 2015-10-23 09:15:02
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