Attachment Exhibit C

This document pretains to SES-MOD-20130401-00300 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2013040100300_991800

Exhibit C FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for Intelsat License LLC Hagerstown, Maryland (Call Sign: E980200) Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, Virginia 20147 March 7, 2013

TABLE OF CONTENTS 1. CONCLUSIONS ............................................................................................................................................ 3 2. SUMMARY OF RESULTS ............................................................................................................................ 4 3. SUPPLEMENTAL SHOWING....................................................................................................................... 5 4. EARTH STATION COORDINATION DATA.................................................................................................. 8 5. CERTIFICATION......................................................................................................................................... 13 Frequency Coordination and Interference Analysis Report 03/07/2013 Page 2 of 13

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 03/07/2013 Page 3 of 13

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 Adams County Emergency Management Agency B20 LLC Baltimore, County of Maryland Baltimore Gas & Electric Company Blue Ridge Carriers Capital Communications of America Cellco Partnership – PA Region ECW Wireless, LLC Exelon Generation Company LLC FELHC, Inc. Garden State Transmissions Hardy Cellular Telephone Company New Cingular Wireless PCS, LLC - DC New Cingular Wireless PCS, LLC – PA SCTF NET State of Maryland, MIEMSS State of WV DHHR/BPH STECS Thought Transmissions, LLC USCOC of Cumberland, Inc. Washington Gas Light Company No other carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 03/07/2013 Page 4 of 13

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 December 20, 2012. Company AB Services LLC ADAMS COUNTY EMERGENCY MANAGEMENT AGENCY AT&T COMMUNICATIONS OF MARYLAND INC AT&T Communications of Virginia, LLC AT&T Corp. Alltel Communications LLC-Southern VA Alltel Communications of Petersburg Inc Appalachia Engineering Services Appalachian Broadcasting Atlantic Broadband (Delmar), LLC Atlantic Broadband (Penn), LLC Atlantic City Electric Company Auburn Data Systems, LLC B20 LLC BAY BROADBAND COMMUNICATIONS LLC BLAIR COUNTY 911 Baltimore County of Maryland Baltimore Gas and Electric Company Bedford, County of Believe Wireless, LLC Berks, County of Blue Ridge Carriers CHESTER, COUNTY OF CLEARFIELD, COUNTY OF CNG Transmission Corporation COLLEGE OF SOUTHERN MARYLAND CROWN COMMUNICATION, INC. Cable Of The Carolinas Cambria, County of Capital Communications of America Cellco Partnership - Bridgeville, PA/WV Cellco Partnership - Southern Virginia Cellco Partnership- PA Region Cellco Partnership-Newark-Dallas Verizon Cellco Partnership-WDC/Baltimore Cellco Prtnrshp - Phil. Tri-State Rgn Frequency Coordination and Interference Analysis Report 03/07/2013 Page 5 of 13

Company (Continued) Charles, County of Commonwealth of Pennsylvania-Radio Proj. Comprehensive Wireless LLC Conterra Ultra Broadband, LLC Converge Towers LLC Coral Reef Technologies Ltd Coralinks County of Frederick DAUPHIN COUNTY EMERGENCY MANAGEMENT Delaware Division of Communications Delmarva Power & Light Company ECW Wireless, LLC EG Broadcast Newco Corp Eastern MLG LLC Enoch Pratt Free Library Exelon Generation Company, L.L.C FELHC, Inc. Fayette, County of Frederick County Fundamental Broadcasting LLC Garden State Transmissions Greene, County of (PA) Hardy Cellular Telephone Company Harrisonburg-Rockingham ECC High Voltage Communications LLC Huntingdon, County of INDIANA, COUNTY OF Jefferson Microwave, LLC Juniata County Emergency Services Kreider Networks Kryptic Technologies Last Mile Inc. Loudoun, County of MCI Communications Services Inc. MVC Research. LLC Maryland Public Broadcasting Commission Maryland State Highway Administration Maryland, State of - Dept.of Info & Tech National Radio Astronomy Observatory New Cingular Wireless PCS LLC -NJ New Cingular Wireless PCS - Maryland New Cingular Wireless PCS LLC - DC New Cingular Wireless PCS LLC - VA New Cingular Wireless PCS LLC- WV/NC/SC New Cingular Wireless PCS LLC-DE/NH/RI New Cingular Wireless PCS, LLC - PA New Jersey, State of -NJ Transit Newgig Networks, LLC Norfolk Southern Railway PENNSYLVANIA TURNPIKE COMMISSION PSEG Services Corporation Frequency Coordination and Interference Analysis Report 03/07/2013 Page 6 of 13

Company (Continued) 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 SW Networks Southern Maryland Electric Cooperative I St. Mary's County of (MD) Stafford, County of State of Maryland, MIEMSS State of WV DHHR/BPH STECS Texas Eastern Communications, Inc. Thought Transmissions, LLC Turtle Networks 6386 US Cellular Operating Company, LLC (WI) USCOC of Cumberland, Inc. Velox Networks LLC Verizon Maryland, Inc. Verizon Wireless (VAW) LLC - Delaware Verizon Wireless (VAW) LLC - Maryland Verizon Wireless (VAW) LLC - W/B/V Mkts Verizon Wireless (VAW) LLC-Pennsylvania Verizon Wireless LLC - West Virginia Verizon Wireless VAW LLC-Southern VA Virginia Broadband, LLC Virginia Cellular LLC Virginia Department of State Police Virginia Electric & Power Company Virginia PCS Alliance, L.C. WITF Inc. Washington D.C. SMSA L.P. Washington Gas Light Company Washington Suburban Sanitary Commission Webline Holdings LLC Wireless Backhaul Infrastructure, LLC Wireless Internet Work ll. Wireless Internetwork LLC World Class Wireless LLC York County Dept of Emergency Services Zen Networks, Inc iSignal Frequency Coordination and Interference Analysis Report 03/07/2013 Page 7 of 13

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 03/07/2013 Page 8 of 13

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 03/07/2013 Job Number: 121220COMSJC04 Administrative Information Status ENGINEER PROPOSAL Call Sign E980200 Licensee Code INTELS Licensee Name Intelsat License LLC Site Information HAGERSTOWN, MARYLAND Venue Name Latitude (NAD 83) 39° 35' 53.7" N Longitude (NAD 83) 77° 45' 34.2" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 175.26 m / 575.0 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Analog and 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) 2.74 m / 9.0 ft Antenna Information Receive Transmit Manufacturer ASC Signal ASC Signal Model 4.6 Meter 4.6 Meter Gain / Diameter 44.4 dBi / 4.6 m 48.2 dBi / 4.6 m 3-dB / 15-dB Beamwidth 0.92° / 1.82° 0.64° / 1.22° 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 (dBW) 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) N0N / 3700.0 - 4200.0 N0N / 5925.0 - 6425.0 660KF2D - 1M00F2D / 3700.0 - 4200.0 660KF2D - 1M00F2D / 5925.0 - 6425.0 56K0G7W - 72M0G7W / 3700.0 - 4200.0 56K0G7W - 72M0G7W / 5925.0 - 6425.0 Max Great Circle Coordination Distance 582.3 km / 361.8 mi 343.0 km / 213.1 mi Precipitation Scatter Contour Radius 613.5 km / 381.2 mi 101.4 km / 63.0 mi Frequency Coordination and Interference Analysis Report 03/07/2013 Page 9 of 13

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com ATTACHMENT 1 Page 1 of 1 ASC Signal Model: 4.6 Meter Call Sign: E980200 6.175 GHz Gain: 48.2 dBi 3.950 GHz Gain: 44.4 dBi Satellite Arc: 6.0° to 149.0° West Longitude Receive Band: 3700.0 to 4200.0 MHz Emissions N0N 660KF2D to 1M00F2D 56K0G7W to 72M0G7W Transmit Band: 5925.0 to 6425.0 MHz EIRP RF Power Density EIRP Density Emission (dBW) (dBW/4 kHz) (dBW/ 4 kHz) N0N 45.5 -2.7 45.5 660KF2D to 62.2 -8.2 40.0 1M00F2D 62.2 -10.0 38.2 56K0G7W to 57.0 -2.7 45.5 72M0G7W 62.2 -28.6 19.6 Frequency Coordination and Interference Analysis Report 03/07/2013 Page 10 of 13

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' 53.7" N Longitude (NAD 83) 77° 45' 34.2" W Ground Elevation (AMSL) 175.26 m / 575.0 ft Antenna Centerline (AGL) 2.74 m / 9.0 ft Antenna Model ASC Signal 4.6 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 -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 13.27 582.31 13.27 343.01 105 0.00 6.15 12.28 482.04 12.28 271.25 110 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 03/07/2013 Page 11 of 13

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' 53.7" N Longitude (NAD 83) 77° 45' 34.2" W Ground Elevation (AMSL) 175.26 m / 575.0 ft Antenna Centerline (AGL) 2.74 m / 9.0 ft Antenna Model ASC Signal 4.6 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 -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 11.96 486.37 11.96 273.61 260 0.00 6.11 12.35 567.67 12.35 332.03 265 0.00 9.18 7.93 420.53 7.93 242.12 270 0.00 13.46 3.77 386.30 3.77 223.04 275 0.20 18.05 0.59 361.00 0.59 209.70 280 0.25 22.84 -1.97 335.09 -1.97 196.69 285 0.22 27.72 -4.07 323.75 -4.07 191.58 290 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 03/07/2013 Page 12 of 13

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 7, 2013 Frequency Coordination and Interference Analysis Report 03/07/2013 Page 13 of 13


Document Created: 2013-03-28 12:35:00
Document Modified: 2013-03-28 12:35:00
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