Attachment FCC_Bristow65rpt

This document pretains to SES-MOD-20120824-00783 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2012082400783_964424

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for SES Americom, Inc. Bristow, Virginia Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, Virginia 20147 August 16, 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 08/16/2012 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 08/16/2012 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 Capital Communications of Americe ECW Wireless, LLC Northern Virginia Electric Cooperative Prince William, County of Washington DC SMSA L.P. No other carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 08/16/2012 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 June 15, 2012. Company AT&T COMMUNICATIONS OF MARYLAND INC AT&T COMMUNICATIONS OF VIRGINIA INC AT&T CORP Alltel Communications LLC-Southern VA Alltel Communications of Petersburg Inc Appalachia Engineering Services Atlantic Broadband (Delmar), LLC Atlantic Broadband (Penn), LLC B20 LLC BAY BROADBAND COMMUNICATIONS LLC Baltimore County of Maryland Baltimore Gas and Electric Company Blue Ridge Carriers COLLEGE OF SOUTHERN MARYLAND Capital Communications of America Cellco Partnership - Southern Virginia Cellco Partnership- PA Region Cellco Partnership-Newark-Dallas Verizon Cellco Partnership-WA/Baltimore Cellco Prtnrshp - Phil. Tri-State Rgn Charles, County of Chesterfield, County of Comprehensive Wireless LLC Conterra Ultra Broadband, LLC County of Frederick County of Stafford DELAWARE STATE - DTI ECW Wireless, LLC Eastern MLG LLC Enoch Pratt Free Library FELHC, Inc. Frederick County Fundamental Broadcasting LLC Garden State Transmissions Goochland County HENRICO COUNTY Frequency Coordination and Interference Analysis Report 08/16/2012 Page 5 of 11

Company (Continued) Hanover, County of Hardy Cellular Telephone Company Harrisonburg-Rockingham ECC King and Queen County 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 National Radio Astronomy Observatory 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 Kent County Norfolk Southern Railway Northern Virginia Electric Cooperative Petersburg Cellular Partnership Prince George's County Prince William, County of RAPPAHANNOCK ELECTRIC COOPERATIVE RCTC Wholesale Corporation RICHMOND, CITY OF SCTF NET SHENANDOAH VALLEY ELECTRIC COOPERATIVE 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 US Cellular Operating Company, LLC (WI) USCOC of Cumberland, Inc. USCOC of Virginia RSA #2, Inc. USCOC of Virginia RSA #3, Inc. Verizon Maryland, Inc. Verizon Wireless VAW LLC-Southern VA Verizon Wireless(VAW) LLC-AZ/CO/NM/NV/UT Virginia RSA 5 Limited Partnership Virginia Broadband, LLC Virginia Cellular LLC Virginia Department of State Police Virginia Electric & Power Company Virginia PCS Alliance, L.C. WASHINGTON SUBURBAN SANITARY COMMISSION Washington D.C. SMSA L.P. Washington Gas Light Company World Class Wireless LLC iSignal Frequency Coordination and Interference Analysis Report 08/16/2012 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 08/16/2012 Page 7 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 08/16/2012 Job Number: 120615COMSJC03 Administrative Information Status ENGINEER PROPOSAL Call Sign E000152 Licensee Code P3210 Licensee Name SES Americom, Inc. Site Information BRISTOW, VIRGINIA Venue Name Latitude (NAD 83) 38° 47' 1.6" N Longitude (NAD 83) 77° 34' 24.3" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 86.47 m / 283.7 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Analog and Digital Satellite Arc 10° W to 139° West Longitude Azimuth Range 104.5° to 251.2° Corresponding Elevation Angles 8.7° / 13.4° Antenna Centerline (AGL) 4.0 m / 13.1 ft Antenna Information Receive Transmit Manufacturer Andrew Corporation Andrew Corporation Model ES65-1 ES65-1 Gain / Diameter 47.4 dBi / 6.5 m 51.0 dBi / 6.5 m 3-dB / 15-dB Beamwidth 0.68° / 1.32° 0.42° / 0.84° 1M00F8D, 77M0G7W, 43K8G7D to 4M80G7D Max Available RF Power (dBW/4 kHz) -0.5 -16.0 -2.7 -4.0 (dBW/MHz) 23.5 8.0 7.7 20.0 Maximum EIRP (dBW/4 kHz) 50.5 35.0 48.3 47.0 (dBW/MHz) 74.5 59.0 58.7 71.0 (dBW) 74.5 77.8 58.7 77.8 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) 43K8G7W - 4M80G7W / 3700.0 - 4200.0 43K8G7D - 4M80G7D / 5925.0 - 6425.0 1M00F8D / 3700.0 - 4200.0 1M00F8D / 5925.0 - 6425.0 77M0G7W / 3700.0 - 4200.0 77M0G7W / 5925.0 - 6425.0 Max Great Circle Coordination Distance 440.1 km / 273.4 mi 255.7 km / 158.9 mi Precipitation Scatter Contour Radius 555.5 km / 345.1 mi 153.6 km / 95.5 mi Frequency Coordination and Interference Analysis Report 08/16/2012 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 BRISTOW, VA Licensee Name SES Americom, Inc. Latitude (NAD 83) 38° 47' 1.6" N Longitude (NAD 83) 77° 34' 24.3" W Ground Elevation (AMSL) 86.47 m / 283.7 ft Antenna Centerline (AGL) 4.0 m / 13.1 ft Antenna Model Andrew Corporation ES65-1 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 -0.5 (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 0.78 104.36 -10.00 232.78 -10.00 133.03 5 0.90 99.41 -10.00 225.64 -10.00 128.64 10 0.82 94.45 -10.00 230.46 -10.00 132.48 15 0.87 89.50 -10.00 227.64 -10.00 130.25 20 0.81 84.55 -10.00 231.00 -10.00 132.90 25 0.83 79.60 -10.00 229.62 -10.00 131.81 30 0.67 74.65 -10.00 239.13 -10.00 138.05 35 0.59 69.71 -10.00 243.89 -10.00 141.90 40 0.48 64.78 -10.00 251.52 -10.00 148.13 45 0.53 59.84 -10.00 248.03 -10.00 145.32 50 0.51 54.91 -10.00 249.29 -10.00 146.36 55 0.31 50.02 -10.00 271.51 -10.00 165.56 60 0.00 45.16 -9.37 289.32 -9.37 181.63 65 0.00 40.29 -8.13 297.45 -8.13 186.41 70 0.00 35.45 -6.74 306.87 -6.74 191.76 75 0.00 30.64 -5.16 318.56 -5.16 197.82 80 0.00 25.91 -3.34 331.67 -3.34 204.77 85 0.00 21.28 -1.20 347.49 -1.20 211.45 90 0.00 16.86 1.33 366.88 1.33 221.98 95 0.29 12.66 4.44 380.04 4.44 226.88 100 0.58 9.28 7.82 375.42 7.82 217.52 105 0.69 8.03 9.39 440.12 9.39 255.68 110 0.92 9.52 7.54 348.27 7.54 200.35 115 0.89 13.01 4.14 322.37 4.14 187.14 120 0.92 16.64 1.47 297.99 1.47 173.05 125 1.05 20.13 -0.60 275.79 -0.60 156.11 130 1.11 23.54 -2.29 261.69 -2.29 146.90 135 1.21 26.77 -3.69 248.81 -3.69 138.56 140 1.25 29.89 -4.89 240.22 -4.89 133.31 145 1.19 32.87 -5.92 236.15 -5.92 132.50 150 0.84 35.85 -6.86 246.98 -6.86 140.52 155 0.85 38.25 -7.56 241.97 -7.56 137.34 160 0.76 40.39 -8.16 243.76 -8.16 139.43 165 0.43 42.38 -8.68 265.94 -8.68 158.61 170 0.49 43.57 -8.98 256.67 -8.98 151.07 175 0.51 44.32 -9.17 254.26 -9.17 149.30 180 0.39 44.70 -9.26 266.62 -9.26 160.08 185 0.00 44.83 -9.29 289.85 -9.29 181.95 Frequency Coordination and Interference Analysis Report 08/16/2012 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 BRISTOW, VA Licensee Name SES Americom, Inc. Latitude (NAD 83) 38° 47' 1.6" N Longitude (NAD 83) 77° 34' 24.3" W Ground Elevation (AMSL) 86.47 m / 283.7 ft Antenna Centerline (AGL) 4.0 m / 13.1 ft Antenna Model Andrew Corporation ES65-1 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 -0.5 (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 44.04 -9.10 291.09 -9.10 182.69 195 0.30 42.50 -8.71 280.49 -8.71 173.12 200 0.00 41.06 -8.34 296.08 -8.34 185.62 205 0.00 38.96 -7.77 299.89 -7.77 187.82 210 0.20 36.35 -7.01 304.34 -7.01 190.20 215 0.23 33.61 -6.16 306.89 -6.16 190.91 220 0.27 30.62 -5.15 308.88 -5.15 190.94 225 0.24 27.47 -3.97 321.50 -3.97 198.26 230 0.26 24.13 -2.56 328.93 -2.56 201.67 235 0.34 20.61 -0.85 332.16 -0.85 201.57 240 0.44 17.07 1.20 334.80 1.20 200.58 245 0.46 14.34 3.09 346.72 3.09 204.61 250 0.39 13.09 4.08 363.81 4.08 215.29 255 0.41 13.56 3.69 357.63 3.69 211.42 260 0.48 15.63 2.15 336.47 2.15 200.44 265 0.54 18.83 0.13 315.78 0.13 188.16 270 0.56 22.68 -1.89 298.59 -1.89 178.19 275 0.56 26.91 -3.75 285.66 -3.75 170.18 280 0.53 31.36 -5.41 276.01 -5.41 162.65 285 0.55 35.93 -6.89 265.71 -6.89 155.86 290 0.54 40.60 -8.21 257.88 -8.21 151.00 295 0.57 45.31 -9.41 248.35 -9.41 144.80 300 0.57 50.08 -10.00 245.37 -10.00 143.12 305 0.54 54.89 -10.00 247.30 -10.00 144.71 310 0.55 59.71 -10.00 246.31 -10.00 143.89 315 0.67 64.53 -10.00 239.26 -10.00 138.15 320 0.76 69.38 -10.00 233.44 -10.00 133.55 325 0.82 74.24 -10.00 230.27 -10.00 132.33 330 0.83 79.11 -10.00 229.35 -10.00 131.60 335 0.74 83.99 -10.00 234.78 -10.00 134.60 340 0.78 88.87 -10.00 232.25 -10.00 133.87 345 0.75 93.75 -10.00 234.08 -10.00 134.05 350 0.72 98.62 -10.00 235.84 -10.00 135.43 355 0.68 103.49 -10.00 238.58 -10.00 137.61 Frequency Coordination and Interference Analysis Report 08/16/2012 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: August 16, 2012 Frequency Coordination and Interference Analysis Report 08/16/2012 Page 11 of 11


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