Attachment Exhibit C

This document pretains to SES-LIC-20050112-00037 for License on a Satellite Earth Station filing.

IBFS_SESLIC2005011200037_413011

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for INTELSAT, LLC HAGERSTOWN, MD - IMT-07X Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 December 29, 2004

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 12/29/2004 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 12/29/2004 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 AT&T COMMUNICATIONS OF MARYLAND INC Cellco Partnership - Newark-Dallas-Route Cellco Partnership - Virginia Cellco Partnership- PA Region Dobson Cellular Systems, Inc. Hardy Cellular Telephone Company Intermedia Services, LLC. Local Communications Network, Inc. MCI Worldcom Network Services, Inc. USCOC of Cumberland, Inc. Vanguard Cellular Pennsylvania, LLC Washington D.C. SMSA L.P. West Virginia Ems Tsn, Inc. No other carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 12/29/2004 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 10/07/2004. Company ALLTEL Communications of VA No. 1, Inc. ALLTEL Communications of Virginia, Inc. AT&T COMMUNICATIONS OF MARYLAND INC AT&T COMMUNICATIONS OF VIRGINIA INC AT&T COMMUNICATIONS OF WEST VIRGINIA AT&T CORP American Cellular Corporation Atlantic Broadband (Delmar), LLC Atlantic Broadband (Penn), LLC Atlantic City Electric Company BAY BROADBAND COMMUNICATIONS LLC CNG Transmission Corporation COLLEGE OF SOUTHERN MARYLAND CROWN COMMUNICATION, INC. Cellco Partnership - Newark-Dallas-Route Cellco Partnership - Virginia Cellco Partnership- PA Region Charles County Cingular Pennsylvania, LLC Corban Networks, Inc. DELAWARE STATE Delmarva Power & Light Company Dobson Cellular Systems, Inc. EASTERBROOKE CELLULAR CORPORATION Exelon Generation Company, L.L.C FAYETTE COUNTY EMERGENCY MANAGEMENT FIRST TELEVISION CORP.(MID-ATLANTIC) Frederick County Em. Comm. Center Hardy Cellular Telephone Company Intermedia Services, LLC. LB Tower Company LLC LOUDOUN COUNTY GOVERNMENT Lenfest MNC, Inc. Local Communications Network, Inc. MARYLAND PUBLIC BROADCASTING COMMISSION MCI Worldcom Network Services, Inc. Maryland RSA 2, LLC Maryland State Highway Administration Maryland, State of - DBM NATIONAL RADIO ASTRONOMY OBSERVATORY Frequency Coordination and Interference Analysis Report 12/29/2004 Page 5 of 11

NTELOS Telephone, Inc. Nera Networks Inc. PENN SERVICE MICROWAVE CO. INC. PENNSYLVANIA TURNPIKE COMMISSION PITTSBURGH CELLULAR TELEPHONE COMPANY PRINCE WILLIAM COUNTY PSEG Services Corporation Peco Energy Company STATE OF MARYLAND, MIEMSS Southern & Central Wireless, LLC Southwestern Bell Mobile Sys LLC - DC Susquehanna Electric Company Time Warner Cable USCOC of Cumberland, Inc. Vanguard Cellular Pennsylvania, LLC Verizon Maryland, Inc. Virginia Cellular Inc./Cellular One Virginia Electric & Power Company Virginia PCS Alliance, L.C. WEST VIRGINIA HEALTH & HUMAN RESOURCES Washington D.C. SMSA L.P. West Virginia Ems Tsn, Inc. Frequency Coordination and Interference Analysis Report 12/29/2004 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 12/29/2004 Page 7 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 12/29/2004 Job Number: 041007COMSTC01 Administrative Information Licensee Name IntelSat, LLC Site Information HAGERSTOWN, MD Venue Name IMT-07X Latitude (NAD 83) 39° 35' 59.6" N Longitude (NAD 83) 77° 45' 27.5" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 169.47 m / 556.0 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 6° W to 143° West Longitude Azimuth Range 101.9° to 253.6° Corresponding Elevation Angles 5.3° / 10.3° Antenna Centerline (AGL) 6.1 m / 20.0 ft Antenna Information Receive Transmit Manufacturer Vertex KPCC Vertex KPCC Gain / Diameter 50.2 dBi / 9.3 m 53.9 dBi / 9.3 m 3-dB / 15-dB Beamwidth 0.53° / 1.11° 0.35° / 0.71° 36M0F8W 43K0G7W – 72M0G7W Max Available RF Power (dBW/4 kHz) -2.7 -2.7 -12.6 (dBW/MHz) 21.3 7.7 11.4 Maximum EIRP (dBW/4 kHz) 51.2 51.2 41.3 (dBW/MHz) 75.2 61.6 65.5 (dBW) 78.2 61.6 83.9 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) 36M0F8W / 3700.0 - 4200.0 36M0F8W / 5925.0 - 6425.0 43K0G7W - 72M0G7W / 3700.0 - 4200.0 43K0G7W - 72K0G7W / 5925.0 - 6425.0 Max Great Circle Coordination Distance 663.7 km / 412.4 mi 398.5 km / 247.6 mi Precipitation Scatter Contour Radius 613.5 km / 381.2 mi 101.4 km / 63.0 mi Frequency Coordination and Interference Analysis Report 12/29/2004 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 HAGERSTOWN, MD Licensee Name IntelSat, LLC Latitude (NAD 83) 39° 35' 59.6" N Longitude (NAD 83) 77° 45' 27.5" W Ground Elevation (AMSL) 169.47 m / 556.0 ft Antenna Centerline (AGL) 6.1 m / 20.0 ft 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 0.26 101.82 -10.00 277.19 -10.00 161.95 5 0.23 96.84 -10.00 281.74 -10.00 165.94 10 0.21 91.86 -10.00 284.33 -10.00 169.83 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 47.10 -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 27.35 -3.92 327.41 -3.92 194.13 80 0.00 22.47 -1.79 343.07 -1.79 202.28 85 0.00 17.66 0.83 362.98 0.83 210.76 90 0.00 12.98 4.17 388.86 4.17 224.76 95 0.00 8.66 8.56 426.07 8.56 245.20 100 0.00 5.61 13.27 663.74 13.27 398.52 105 0.00 6.15 12.28 511.01 12.28 292.45 110 0.00 9.60 7.45 416.38 7.45 239.82 115 0.00 13.27 3.93 387.54 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 -2.43 338.34 -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 35.81 -6.85 306.10 -6.85 182.86 155 0.00 38.20 -7.55 301.33 -7.55 180.16 160 0.00 40.26 -8.12 297.51 -8.12 177.95 165 0.00 41.92 -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 44.17 -9.13 290.88 -9.13 174.04 185 0.00 43.92 -9.07 291.29 -9.07 174.29 Frequency Coordination and Interference Analysis Report 12/29/2004 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 HAGERSTOWN, MD Licensee Name IntelSat, LLC Latitude (NAD 83) 39° 35' 59.6" N Longitude (NAD 83) 77° 45' 27.5" W Ground Elevation (AMSL) 169.47 m / 556.0 ft Antenna Centerline (AGL) 6.1 m / 20.0 ft 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 41.92 -8.56 294.59 -8.56 176.24 200 0.00 40.26 -8.12 297.52 -8.12 177.95 205 0.00 38.20 -7.55 301.33 -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 0.21 26.96 -3.77 327.66 -3.77 194.06 230 0.22 23.67 -2.36 336.27 -2.36 198.20 235 0.22 20.26 -0.67 348.91 -0.67 204.67 240 0.23 16.72 1.42 362.89 1.42 209.70 245 0.26 13.18 4.01 380.16 4.01 217.99 250 0.26 10.64 6.33 399.45 6.33 228.82 255 0.24 10.13 6.87 446.59 6.87 253.84 260 0.21 11.89 5.12 395.17 5.12 227.84 265 0.26 15.11 2.52 368.51 2.52 211.95 270 0.31 19.10 -0.02 341.29 -0.02 198.12 275 0.24 23.52 -2.28 333.94 -2.28 196.35 280 0.00 28.18 -4.25 325.06 -4.25 192.88 285 0.00 32.86 -5.92 313.22 -5.92 186.47 290 0.00 37.61 -7.38 302.47 -7.38 180.81 295 0.00 42.41 -8.69 293.76 -8.69 175.76 300 0.00 47.25 -9.86 286.17 -9.86 171.20 305 0.28 52.07 -10.00 275.29 -10.00 160.31 310 0.24 56.96 -10.00 280.06 -10.00 164.46 315 0.00 61.88 -10.00 285.28 -10.00 170.66 320 0.00 66.78 -10.00 285.28 -10.00 170.66 325 0.00 71.69 -10.00 285.28 -10.00 170.66 330 0.00 76.61 -10.00 285.28 -10.00 170.66 335 0.00 81.52 -10.00 285.28 -10.00 170.66 340 0.32 86.44 -10.00 270.80 -10.00 156.46 345 0.29 91.36 -10.00 274.59 -10.00 159.71 350 0.23 96.29 -10.00 281.42 -10.00 165.66 355 0.00 101.20 -10.00 285.28 -10.00 170.66 Frequency Coordination and Interference Analysis Report 12/29/2004 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. I AM FAMILIAR WITH PARTS 101 AND 25 OF THE FCC RULES AND REGULATIONS. 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. Timothy O. Crutcher Frequency Planner COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 DATED: December 29, 2004 Frequency Coordination and Interference Analysis Report 12/29/2004 Page 11 of 11


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Document Modified: 2005-01-05 16:51:26
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