Attachment Exhibit C

This document pretains to SES-MFS-20120319-00276 for Modification w/ Foreign Satellite (earth station) on a Satellite Earth Station filing.

IBFS_SESMFS2012031900276_945400

Exhibit C FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for Intelsat License LLC Ellenwood, Georgia (Call Sign: E990365) Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, Virginia 20147 March 2, 2012

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 03/02/2012 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 03/02/2012 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 None No carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 03/02/2012 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. Expedited coordination data for this earth station was emailed and sent to the below listed carriers with a letter dated January 18, 2012. Company Airband Communications Inc Alltel Communications LLC - Alabama Alltel Communications LLC - Georgia Alltel Communications, LLC - Arkansas Atlanta Police Department Biltmore Communications Blue Ridge Electric Cooperative Inc CALHOUN COUNTY COMMISSIONERS CALHOUN, COUNTY OF Calhoun, County of - Emergency Managemen Cellco Partnership - Alabama Cellco Partnership - Georgia Mkt City of Douglasville City of Macon, Georgia Clearwire Spectrum Holdings II, LLC Clearwire Spectrum Holdings III, LLC Conterra Ultra Broadband, LLC FULTON, COUNTY OF FiberTower Network Services Corp. Greene County EOC/E-911 Hall County 9-1-1 Jackson County Public Safety LigoWave METROPOLITAN AREA NETWORKS, INC. New Cingular Wireless PCS LLC - AL, MS, New Cingular Wireless PCS LLC - Georgia New Cingular Wireless PCS LLC-WV/VA/NC/S New Cingular Wireless PCS, LLC - LA, GM Oconee County Sheriffs Office One Ring Networks, Inc. Open Range Communications Inc., D-I-P Spalding, County of Sprintcom, Inc TOWER CLOUD, INC Talladega County Emergency Mangement Age Frequency Coordination and Interference Analysis Report 03/02/2012 Page 5 of 11

Company (Continued) US Cellular Telephone Co-Grtr Knoxville Verizon Wireless (VAW) LLC (Georgia) Verizon Wireless of the East LP- Alabama Vyvx, LLC - Atlanta Frequency Coordination and Interference Analysis Report 03/02/2012 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 03/02/2012 Page 7 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 03/02/2012 Job Number: 120118COMSJC02 Administrative Information Status ENGINEER PROPOSAL Call Sign E990365 Licensee Code INTELS Licensee Name Intelsat License LLC Site Information ELLENWOOD, GEORGIA Venue Name Latitude (NAD 83) 33° 39' 52.4" N Longitude (NAD 83) 84° 16' 13.7" W Climate Zone A Rain Zone 1 Ground Elevation (AMSL) 236.0 m / 774.3 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 37° W to 110° West Longitude Azimuth Range 117.1° to 221.0° Corresponding Elevation Angles 26.6° / 42.1° Antenna Centerline (AGL) 8.4 m / 27.6 ft Antenna Information Receive Transmit Manufacturer Vertex Vertex Model 13.1 Meter 13.1 Meter Gain / Diameter 62.5 dBi / 13.1 m 63.8 dBi / 13.1 m 3-dB / 15-dB Beamwidth 0.80° / 1.40° 0.60° / 1.20° 750KF2D 64K0G7W to 36M0G7W Max Available RF Power (dBW/4 kHz) -1.5 -14.0 -18.3 (dBW/MHz) 21.2 -2.0 5.7 Maximum EIRP (dBW/4 kHz) 62.3 49.8 45.5 (dBW/MHz) 85.0 61.8 69.5 (dBW) 85.0 61.8 85.0 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 11.0 GHz Transmit 14.0 GHz Emission / Frequency Range (MHz) 750KF2D / 10950.0 - 11200.0 36M0G7W / 14000.0 - 14500.0 64K0G7W / 10950.0 - 11200.0 64K0G7W / 14000.0 - 14500.0 36M0G7W / 10950.0 - 11200.0 750KF2D / 14000.0 - 14500.0 750KF2D / 11450.0 - 12200.0 64K0G7W / 11450.0 - 12200.0 36M0G7W / 11450.0 - 12200.0 Max Great Circle Coordination Distance 234.8 km / 145.9 mi 152.0 km / 94.5 mi Precipitation Scatter Contour Radius 528.2 km / 328.1 mi 116.8 km / 72.6 mi Frequency Coordination and Interference Analysis Report 03/02/2012 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 ELLENWOOD, GA Licensee Name Intelsat License LLC Latitude (NAD 83) 33° 39' 52.4" N Longitude (NAD 83) 84° 16' 13.7" W Ground Elevation (AMSL) 236.0 m / 774.3 ft Antenna Centerline (AGL) 8.4 m / 27.6 ft Antenna Model Vertex 13.1 Meter Antenna Mode Receive 11.0 GHz Transmit 14.0 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 -1.5 (dBW/4 kHz) Receive 11.0 GHz Transmit 14.0 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 0 0.35 114.13 -10.00 216.85 -10.00 135.12 5 0.35 109.73 -10.00 217.28 -10.00 135.52 10 0.38 105.31 -10.00 214.86 -10.00 133.25 15 0.39 100.85 -10.00 213.41 -10.00 131.91 20 0.38 96.38 -10.00 214.35 -10.00 132.79 25 0.34 91.90 -10.00 218.48 -10.00 136.66 30 0.40 87.41 -10.00 213.08 -10.00 131.61 35 0.25 82.94 -10.00 226.38 -10.00 144.33 40 0.49 78.45 -10.00 205.04 -10.00 125.49 45 0.49 74.00 -10.00 205.64 -10.00 126.05 50 0.54 69.56 -10.00 204.81 -10.00 123.04 55 0.58 65.15 -10.00 203.19 -10.00 121.52 60 0.55 60.81 -10.00 204.65 -10.00 122.89 65 0.31 56.60 -10.00 220.95 -10.00 139.02 70 0.40 52.37 -10.00 212.38 -10.00 130.97 75 0.38 48.29 -10.00 214.75 -10.00 133.16 80 0.00 44.53 -9.22 234.83 -9.22 152.04 85 0.40 40.55 -8.20 220.59 -8.20 136.93 90 0.84 36.72 -7.12 202.04 -7.12 117.81 95 0.87 33.44 -6.11 204.80 -6.11 119.40 100 0.99 30.49 -5.11 203.88 -5.11 117.51 105 0.79 28.34 -4.31 213.68 -4.31 127.99 110 1.03 26.50 -3.58 206.54 -3.58 120.68 115 0.96 25.74 -3.26 210.57 -3.26 124.06 120 1.02 25.74 -3.27 208.03 -3.27 121.73 125 1.15 26.58 -3.61 203.08 -3.61 117.44 130 1.23 28.27 -4.28 200.57 -4.28 113.57 135 1.16 30.76 -5.20 198.30 -5.20 112.47 140 1.26 33.63 -6.17 191.13 -6.17 107.20 145 1.86 36.47 -7.05 168.28 -7.05 100.00 150 2.00 39.39 -7.88 156.68 -7.88 100.00 155 1.56 42.45 -8.70 169.71 -8.70 100.00 160 1.28 45.04 -9.34 175.67 -9.34 100.00 165 1.22 47.02 -9.81 175.26 -9.81 100.00 170 0.98 48.69 -10.00 182.72 -10.00 103.97 175 1.29 49.27 -10.00 172.07 -10.00 100.00 180 1.05 49.81 -10.00 180.10 -10.00 101.91 185 0.71 49.85 -10.00 196.85 -10.00 115.77 Frequency Coordination and Interference Analysis Report 03/02/2012 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 ELLENWOOD, GA Licensee Name Intelsat License LLC Latitude (NAD 83) 33° 39' 52.4" N Longitude (NAD 83) 84° 16' 13.7" W Ground Elevation (AMSL) 236.0 m / 774.3 ft Antenna Centerline (AGL) 8.4 m / 27.6 ft Antenna Model Vertex 13.1 Meter Antenna Mode Receive 11.0 GHz Transmit 14.0 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 -1.5 (dBW/4 kHz) Receive 11.0 GHz Transmit 14.0 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 190 0.61 49.03 -10.00 201.39 -10.00 119.86 195 0.63 47.54 -9.93 200.75 -9.93 119.21 200 0.63 45.64 -9.48 202.74 -9.48 120.64 205 0.70 43.88 -9.06 200.77 -9.06 118.45 210 0.64 42.67 -8.75 205.02 -8.75 122.12 215 0.93 41.56 -8.47 192.15 -8.47 110.30 220 0.87 41.28 -8.39 195.63 -8.39 113.24 225 0.45 41.84 -8.54 214.40 -8.54 131.49 230 0.41 42.51 -8.71 217.42 -8.71 134.45 235 0.36 43.64 -9.00 220.58 -9.00 137.70 240 0.30 45.21 -9.38 224.44 -9.38 141.80 245 0.00 47.35 -9.88 231.88 -9.88 149.73 250 0.24 49.38 -10.00 227.79 -10.00 145.74 255 0.35 51.82 -10.00 217.38 -10.00 135.61 260 0.60 54.43 -10.00 202.19 -10.00 120.59 265 0.62 57.41 -10.00 201.20 -10.00 119.69 270 0.86 60.46 -10.00 188.96 -10.00 109.02 275 1.06 63.70 -10.00 179.55 -10.00 101.48 280 1.69 66.92 -10.00 155.89 -10.00 100.00 285 2.69 70.21 -10.00 131.63 -10.00 100.00 290 4.12 73.60 -10.00 108.82 -10.00 100.00 295 4.86 77.33 -10.00 100.00 -10.00 100.00 300 5.10 81.24 -10.00 100.00 -10.00 100.00 305 5.69 85.18 -10.00 100.00 -10.00 100.00 310 5.57 89.20 -10.00 100.00 -10.00 100.00 315 5.22 93.20 -10.00 100.00 -10.00 100.00 320 4.83 97.15 -10.00 100.01 -10.00 100.00 325 4.63 101.07 -10.00 102.44 -10.00 100.00 330 3.78 104.79 -10.00 113.92 -10.00 100.00 335 3.27 108.46 -10.00 122.63 -10.00 100.00 340 2.31 111.86 -10.00 139.48 -10.00 100.00 345 1.07 114.94 -10.00 179.42 -10.00 101.38 350 0.47 118.05 -10.00 206.75 -10.00 127.08 355 0.45 118.50 -10.00 208.14 -10.00 128.37 Frequency Coordination and Interference Analysis Report 03/02/2012 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. Jeffrey E. Cowles Engineer III, Telecommunications COMSEARCH 19700 Janelia Farm Boulevard Ashburn, Va. 20147 DATED: March 2, 2012 Frequency Coordination and Interference Analysis Report 03/02/2012 Page 11 of 11


Document Created: 2012-03-13 10:47:16
Document Modified: 2012-03-13 10:47:16
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