Attachment Exhibit C

This document pretains to SES-MFS-20111118-01379 for Modification w/ Foreign Satellite (earth station) on a Satellite Earth Station filing.

IBFS_SESMFS2011111801379_926899

Exhibit C FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for Intelsat License LLC Hagerstown, Maryland (Call Sign: E000296) Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, Virginia 20147 August 30, 2011

TABLE OF CONTENTS 1. CONCLUSIONS ............................................................................................................................................ 3 2. SUMMARY OF RESULTS ............................................................................................................................ 4 3. SUPPLEMENTAL SHOWING ....................................................................................................................... 5 4. EARTH STATION COORDINATION DATA .................................................................................................. 8 5. CERTIFICATION ......................................................................................................................................... 15 Frequency Coordination and Interference Analysis Report 08/30/2011 Page 2 of 15

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 08/30/2011 Page 3 of 15

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 AT&T Communications of Maryland, Inc. Baltimore County of Maryland Baltimore Gas and Electric Company Cellco Partnership – Newark-Dallas Verizon County of Frederick Eastern Communications, Inc. Exelon Generation Company, L.L.C. Hardy Cellular Telephone MCI Communication Services Inc. New Cingular Wireless PCS, LLC – PA New Cingular Wireless PCS, LLC – VA/DC.MD SCTF Net State of Maryland, MIEMSS State of WV DHHR/BPH STECS USCOC of Cumberland, Inc. Washington Gas Light Company No other carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 08/30/2011 Page 4 of 15

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 April 4, 2011. Company AB Services LLC ALLTEL Communications, LLC AMERICAN ELECTRIC POWER SERVICE CORP. AT&T COMMUNICATIONS OF MARYLAND INC AT&T COMMUNICATIONS OF VIRGINIA INC AT&T CORP Alltel Communications LLC - SOVA Alltel Communications of Petersburg Inc Atlantic Broadband (Delmar), LLC Atlantic Broadband (Penn), LLC Atlantic City Electric Company Auburn Data Systems, LLC BAY BROADBAND COMMUNICATIONS LLC Baltimore County of Maryland Baltimore Gas and Electric Company Bedford, County of Berks, County of Borough of Huntingdon BringCom Incorporated CHESTER, COUNTY OF CLEARFIELD, COUNTY OF CNG Transmission Corporation COLLEGE OF SOUTHERN MARYLAND CROWN COMMUNICATION, INC. Cambria, County of Cellco Partnership - Bridgeville, PA Cellco Partnership - Southern Virginia Cellco Partnership- PA Region Cellco Partnership-Newark-Dallas Verizon Cellco Partnership-WA/Baltimore/VA Cellco Prtnrshp - Phil. Tri-State Rgn Charles, County of Commonwealth of Pennsylvania-Radio Proj. Comprehensive Wireless LLC Conterra Ultra Broadband, LLC Coral Reef Tecnologies Ltd Frequency Coordination and Interference Analysis Report 08/30/2011 Page 5 of 15

Company (Continued) County of Frederick County of Stafford DAUPHIN COUNTY EMERGENCY MANAGEMENT DELAWARE STATE - DTI Delmarva Power & Light Company Enoch Pratt Free Library Exelon Generation Company, L.L.C FELHC, Inc. FMLD Holdings, LLC Fayette, County of Frederick County Fundamental Broadcasting LLC Greene, County of (PA) Hardy Cellular Telephone Company Harrison County Emergency Services Harrisonburg-Rockingham ECC International Communications Group, Inc. Juniata County Emergency Services Kryptic Technologies LB Tower Company LLC Last Mile Inc. Loudoun, County of MCI Communications Services Inc. METROPOLITAN AREA NETWORKS, INC. Maryland Public Broadcasting Commission Maryland State Highway Administration Maryland, State of - Dept.of Info & Tech NTELOS Telephone, Inc. National Radio Astronomy Observatory New Cingular Wireless PCS LLC -NJ New Cingular Wireless PCS - VA/DC/MD New Cingular Wireless PCS LLC - DC New Cingular Wireless PCS LLC - Ohio New Cingular Wireless PCS LLC - WV/VA/SC New Cingular Wireless PCS LLC- DE/NH/RI New Cingular Wireless PCS, LLC - PA New Jersey, State of -NJ Transit Norfolk Southern Railway Northern Virginia Electric Cooperative Open Range Communications PENNSYLVANIA TURNPIKE COMMISSION PSEG Services Corporation Peco Energy Company Penn Service Microwave Co., Inc. Pittsburgh SMSA Limited Partnership Prince George's County Prince William, County of RAPPAHANNOCK ELECTRIC COOPERATIVE SCTF NET SHENANDOAH VALLEY ELECTRIC COOPERATIVE SOMERSET COUNTY Frequency Coordination and Interference Analysis Report 08/30/2011 Page 6 of 15

Company (Continued) Southern Maryland Electric Cooperative I St. Mary's County of State of Maryland, MIEMSS State of WV DHHR/BPH STECS Texas Eastern Communications, Inc. Thought Transmissions, LLC USCOC of Cumberland, Inc. Verizon Maryland, Inc. Virginia Broadband, LLC Virginia Cellular LLC Virginia Department of State Police Virginia Electric & Power Company Virginia PCS Alliance, L.C. WASHINGTON SUBURBAN SANITARY COMMISSION WITF Inc. Washington D.C. SMSA L.P. Washington Gas Light Company York County Dept of Emergency Services Frequency Coordination and Interference Analysis Report 08/30/2011 Page 7 of 15

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 08/30/2011 Page 8 of 15

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 08/30/2011 Job Number: 110404COMSJC01 Administrative Information Status ENGINEER PROPOSAL Call Sign E000296 Licensee Code INTELS Licensee Name Intelsat License LLC Site Information HAGERSTOWN, MARYLAND Venue Name Latitude (NAD 83) 39° 35' 54.0" N Longitude (NAD 83) 77° 45' 35.0" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 173.74 m / 570.0 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 6° W to 149° West Longitude Azimuth Range 101.9° to 257.8° Corresponding Elevation Angles 5.3° / 5.7° Antenna Centerline (AGL) 5.79 m / 19.0 ft Antenna Information Receive Transmit Manufacturer Vertex Comm. Vertex Comm. Model 9 KPC 9 KPC Gain / Diameter 50.1 dBi / 9.0 m 53.5 dBi / 9.0 m 3-dB / 15-dB Beamwidth 0.65° / 1.00° 0.36° / 0.67° Max Available RF Power (dBW/4 kHz) SEE ATTACHMENT 1 (dBW/MHz) SEE ATTACHMENT 1 Maximum EIRP (dBW/4 kHz) SEE ATTACHMENT 1 (dBW/MHz) SEE ATTACHMENT 1 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) SEE ATTACHMENT 1 SEE ATTACHMENT 1 Max Great Circle Coordination Distance 662.2 km / 411.4 mi 394.4 km / 245.0 mi Precipitation Scatter Contour Radius 613.5 km / 381.2 mi 101.4 km / 63.0 mi Frequency Coordination and Interference Analysis Report 08/30/2011 Page 9 of 15

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com ATTACHMENT 1 Page 1 of 3 Vertex Commuinications: Model: 9.0 KPC 6.175 GHz Gain: 53.5 dBi 3.950 GHz Gain: 50.1 dBi Satellite Arc: 6.0 to 149.0 West Longitude Receive Band: 3700.0 to 4200.0 MHz Emissions 660KF2D to 1M08F2D 250KG9D 800KF9D 900KF9D 56K0G7W to 72M0G7W ------------------------------------------------------------------------- Satellite Arc: 6.0 to 149.0 West Longitude Transmit Band: 5925.0 to 6425.0 MHz EIRP RF Power Density EIRP Density Emission (dBW) (dBW/4 kHz) (dBW/ 4 kHz) 660KF2D - 73.0 -2.7 50.8 1M08F2D 75.1 -2,7 50.8 800KF9D 73.8 -2.7 50.8 900KF9D 74.3 -2.7 50.8 56K0G7W – 62.3 -2.7 50.8 72M0G7W 86.5 -9.6 43.9 ------------------------------------------------------------------------- Frequency Coordination and Interference Analysis Report 08/30/2011 Page 10 of 15

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com ATTACHMENT 1 Page 2 of 3 Satellite Arc: 18.0 to 55.5 West Longitude Receive Band: 3625.0 to 4200.0 MHz Emissions 800KF9D 56K0G7W to 72M0G7W ------------------------------------------------------------------------- Satellite Arc: 18.0 to 55.5 West Longitude Transmit Band: 5925.0 to 6425.0 MHz EIRP RF Power Density EIRP Density Emission (dBW) (dBW/4 kHz) (dBW/ 4 kHz) 56K0G7W – 62.3 -2.7 50.8 72M0G7W 86.5 -9.6 43.9 ------------------------------------------------------------------------- Satellite Arc: 0.0 to 360.0 West Longitude Receive Band: 3700.0 to 4200.0 MHz Emissions 660KF2D to 1M08F2D 250KG9D 800KF9D 900KF9D 56K0G7W to 72M0G7W Frequency Coordination and Interference Analysis Report 08/30/2011 Page 11 of 15

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com ATTACHMENT 1 Page 3 of 3 Transmit Band: 5925.0 to 6425.0 MHz EIRP RF Power Density EIRP Density Emission (dBW) (dBW/4 kHz) (dBW/ 4 kHz) 660KF2D - 73.0 -2.7 50.8 1M08F2D 75.1 -2,7 50.8 800KF9D 73.8 -2.7 50.8 900KF9D 74.3 -2.7 50.8 56K0G7W – 62.3 -2.7 50.8 72M0G7W 86.5 -9.6 43.9 Frequency Coordination and Interference Analysis Report 08/30/2011 Page 12 of 15

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Coordination Values HAGERSTOWN, MD Licensee Name Intelsat License LLC Latitude (NAD 83) 39° 35' 54.0" N Longitude (NAD 83) 77° 45' 35.0" W Ground Elevation (AMSL) 173.74 m / 570.0 ft Antenna Centerline (AGL) 5.79 m / 19.0 ft Antenna Model Vertex Comm. 9 KPC 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 -2.7 (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 0.00 101.81 -10.00 285.28 -10.00 170.66 5 0.00 96.84 -10.00 285.28 -10.00 170.66 10 0.00 91.86 -10.00 285.28 -10.00 170.66 15 0.00 86.88 -10.00 285.28 -10.00 170.66 20 0.00 81.90 -10.00 285.28 -10.00 170.66 25 0.00 76.92 -10.00 285.28 -10.00 170.66 30 0.00 71.95 -10.00 285.28 -10.00 170.66 35 0.00 66.97 -10.00 285.28 -10.00 170.66 40 0.00 62.00 -10.00 285.28 -10.00 170.66 45 0.00 57.03 -10.00 285.28 -10.00 170.66 50 0.00 52.06 -10.00 285.28 -10.00 170.66 55 0.00 47.09 -9.82 286.40 -9.82 171.34 60 0.00 42.14 -8.62 294.23 -8.62 176.03 65 0.00 37.19 -7.26 303.30 -7.26 181.28 70 0.00 32.26 -5.72 314.62 -5.72 187.24 75 0.00 27.34 -3.92 327.41 -3.92 194.13 80 0.00 22.47 -1.79 343.08 -1.79 202.28 85 0.00 17.65 0.83 362.99 0.83 210.76 90 0.00 12.98 4.17 388.88 4.17 224.77 95 0.00 8.66 8.56 426.09 8.56 245.21 100 0.00 5.61 13.27 662.20 13.27 394.41 105 0.00 6.15 12.28 510.47 12.28 290.85 110 0.00 9.60 7.45 416.37 7.45 239.82 115 0.00 13.27 3.93 387.53 3.93 223.71 120 0.00 16.89 1.31 366.72 1.31 212.69 125 0.00 20.41 -0.75 350.91 -0.75 204.62 130 0.00 23.83 -2.43 338.33 -2.43 199.84 135 0.00 27.11 -3.83 328.09 -3.83 194.49 140 0.00 30.23 -5.01 319.61 -5.01 189.96 145 0.00 33.14 -6.01 311.94 -6.01 186.11 150 0.00 35.82 -6.85 306.09 -6.85 182.86 155 0.00 38.20 -7.55 301.33 -7.55 180.15 160 0.00 40.26 -8.12 297.51 -8.12 177.95 165 0.00 41.93 -8.56 294.59 -8.56 176.24 170 0.00 43.16 -8.88 292.52 -8.88 175.02 175 0.00 43.92 -9.07 291.29 -9.07 174.29 180 0.00 44.18 -9.13 290.88 -9.13 174.04 185 0.00 43.92 -9.07 291.28 -9.07 174.28 Frequency Coordination and Interference Analysis Report 08/30/2011 Page 13 of 15

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Coordination Values HAGERSTOWN, MD Licensee Name Intelsat License LLC Latitude (NAD 83) 39° 35' 54.0" N Longitude (NAD 83) 77° 45' 35.0" W Ground Elevation (AMSL) 173.74 m / 570.0 ft Antenna Centerline (AGL) 5.79 m / 19.0 ft Antenna Model Vertex Comm. 9 KPC 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 -2.7 (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 0.00 43.16 -8.88 292.52 -8.88 175.02 195 0.00 41.93 -8.56 294.59 -8.56 176.24 200 0.00 40.26 -8.12 297.51 -8.12 177.95 205 0.00 38.20 -7.55 301.32 -7.55 180.15 210 0.00 35.81 -6.85 306.10 -6.85 182.86 215 0.00 33.14 -6.01 311.94 -6.01 186.11 220 0.00 30.22 -5.01 319.62 -5.01 189.96 225 0.00 27.11 -3.83 328.08 -3.83 194.49 230 0.00 23.83 -2.43 338.32 -2.43 199.84 235 0.00 20.42 -0.75 350.90 -0.75 204.61 240 0.00 16.89 1.31 366.75 1.31 212.70 245 0.00 13.28 3.92 387.51 3.92 223.69 250 0.00 9.59 7.46 416.47 7.46 239.87 255 0.00 6.33 11.96 518.47 11.96 295.99 260 0.00 6.11 12.35 641.44 12.35 379.91 265 0.00 9.18 7.93 420.53 7.93 242.12 270 0.00 13.46 3.77 386.29 3.77 223.04 275 0.00 18.11 0.55 360.86 0.55 209.67 280 0.00 22.90 -2.00 341.54 -2.00 201.49 285 0.00 27.76 -4.09 326.22 -4.09 193.50 290 0.00 32.66 -5.85 313.67 -5.85 186.72 295 0.00 37.59 -7.38 302.52 -7.38 180.83 300 0.00 42.53 -8.72 293.57 -8.72 175.64 305 0.00 47.48 -9.91 285.84 -9.91 171.00 310 0.00 52.44 -10.00 285.28 -10.00 170.66 315 0.00 57.40 -10.00 285.28 -10.00 170.66 320 0.00 62.37 -10.00 285.28 -10.00 170.66 325 0.00 67.34 -10.00 285.28 -10.00 170.66 330 0.00 72.31 -10.00 285.28 -10.00 170.66 335 0.00 77.28 -10.00 285.28 -10.00 170.66 340 0.00 82.26 -10.00 285.28 -10.00 170.66 345 0.00 87.23 -10.00 285.28 -10.00 170.66 350 0.00 92.21 -10.00 285.28 -10.00 170.66 355 0.00 97.18 -10.00 285.28 -10.00 170.66 Frequency Coordination and Interference Analysis Report 08/30/2011 Page 14 of 15

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: August 30, 2011 Frequency Coordination and Interference Analysis Report 08/30/2011 Page 15 of 15


Document Created: 2011-11-18 14:08:12
Document Modified: 2011-11-18 14:08:12
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