Attachment FCC_Bristrpt

This document pretains to SES-MOD-20100615-00701 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2010061500701_821532

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for SES Americom, Inc. Bristow, Virginia (Call Sign: E980076) Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, Virginia 20147 June 4, 2010

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 06/04/2010 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 06/04/2010 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 transmit-receive earth station. Company Allegheny Power Service Corporation Baltimore County of Maryland Cellco Paetnership –Newark-Dallas Verizon Cellco Partnership – Southern Virginia New Cingular Wireless PCS LLC - DC Northern Virginia Electric Cooperative Southern Maryland Electric Cooperative State of Maryland MIEMSS Verizon Maryland Inc. Washington DC SMSA L.P. Washington Gas Light Company Washington Suburban Sanitary Commission No other carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 06/04/2010 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 March 26, 2010. Company ALLTEL Communications of VA No. 1, Inc. AT&T COMMUNICATIONS OF MARYLAND INC AT&T COMMUNICATIONS OF VIRGINIA INC AT&T CORP Allegheny Power Service Corporation Alltel Communications of Virginia #1 LLC Alltel Communications of Virginia, Inc. Atlantic Broadband (Delmar), LLC Atlantic Broadband (Penn), LLC BAY BROADBAND COMMUNICATIONS LLC Baltimore County of Maryland Baltimore Gas and Electric Company COLLEGE OF SOUTHERN MARYLAND Cellco Partnership - Southern Virginia Cellco Partnership- PA Region Cellco Partnership-Newark-Dallas Verizon Cellco Partnership-Washington/Baltimore Charles, County of Charlottesville Cellular Partnership Conterra Ultra Broadband, LLC County of Frederick County of Stafford DELAWARE STATE - DTI Enoch Pratt Free Library Frederick County HANOVER COUNTY Hardy Cellular Telephone Company Harrisonburg-Rockingham ECC Local Communications Network, Inc. Loudoun, County of MARYLAND PUBLIC BROADCASTING COMMISSION MCI Communication Services, Inc. METROPOLITAN AREA NETWORKS, INC. Frequency Coordination and Interference Analysis Report 06/04/2010 Page 5 of 11

Company (Continued) Maryland State Highway Administration Maryland, State of - Budget & Management NTELOS Telephone, Inc. National Radio Astronomy Observatory New Cingular Wireless PCS - VA/DC/MD New Cingular Wireless PCS LLC - DC New Cingular Wireless PCS LLC- DE/NH/RI New Cingular Wireless PCS, LLC - PA Northern Virginia Electric Cooperative PRINCE WILLIAM COUNTY Prince George's County RAPPAHANNOCK ELECTRIC COOPERATIVE RCTC Wholesale Corporation - Verizon SCTF NET South & Central Wireless, LLC - SOVA Southern Maryland Electric Cooperative I State of Maryland, MIEMSS State of WV DHHR/BPH STECS Texas Eastern Communications, Inc. USCOC of Cumberland, Inc. USCOC of Virginia RSA #2, Inc. USCOC of Virginia RSA #3, Inc. Verizon Maryland, Inc. Virginia Broadband, LLC Virginia Cellular LLC Virginia Department of State Police Virginia Electric & Power Company Virginia PCS Alliance, L.C. Virginia RSA #7, Inc. WASHINGTON SUBURBAN SANITARY COMMISSION Washington D.C. SMSA L.P. Washington Gas Light Company Wireless Strategies, Inc. Frequency Coordination and Interference Analysis Report 06/04/2010 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 06/04/2010 Page 7 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 06/04/2010 Job Number: 100326COMSJC01 Administrative Information Status ENGINEER PROPOSAL Call Sign E980076 Licensee Code P3210 Licensee Name SES Americom, Inc. Site Information BRISTOW, VIRGINIA Venue Name Latitude (NAD 83) 38° 47' 1.0" N Longitude (NAD 83) 77° 34' 23.0" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 85.34 m / 280.0 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 20° W to 60° West Longitude Azimuth Range 111.7° to 153.2° Corresponding Elevation Angles 16.4° / 41.5° Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Information Receive Transmit Manufacturer Vertex Corporation Vertex Corporation Model 9.3 Meter KPC 9.3 Meter KPC Gain / Diameter 50.5 dBi / 9.3 m 53.8 dBi / 9.3 m 3-dB / 15-dB Beamwidth 0.50° / 1.00° 0.36° / 0.72° 48K3G7W to 77M0G7W Max Available RF Power (dBW/4 kHz) -2.7 -15.8 (dBW/MHz) 7.7 8.2 Maximum EIRP (dBW/4 kHz) 51.1 38.0 (dBW/MHz) 61.5 62.0 (dBW) 61.5 80.8 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 - 77M0G7W / 3700.0 - 4200.0 48K3G7W - 77M0G7W / 5925.0 - 6425.0 Max Great Circle Coordination Distance 352.5 km / 219.0 mi 205.4 km / 127.6 mi Precipitation Scatter Contour Radius 514.1 km / 319.4 mi 100.0 km / 62.1 mi Frequency Coordination and Interference Analysis Report 06/04/2010 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' 1.0" N Longitude (NAD 83) 77° 34' 23.0" W Ground Elevation (AMSL) 85.34 m / 280.0 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model Vertex Corp. 9.3 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 0.83 110.87 -10.00 229.81 -10.00 125.35 5 0.91 106.08 -10.00 225.27 -10.00 121.71 10 0.90 101.27 -10.00 225.85 -10.00 122.18 15 0.81 96.45 -10.00 230.51 -10.00 125.89 20 0.85 91.64 -10.00 228.61 -10.00 124.39 25 0.69 86.82 -10.00 238.06 -10.00 131.73 30 0.60 82.02 -10.00 243.14 -10.00 134.29 35 0.36 77.23 -10.00 265.59 -10.00 152.06 40 0.57 72.42 -10.00 245.38 -10.00 135.99 45 0.56 67.63 -10.00 245.64 -10.00 136.19 50 0.43 62.88 -10.00 257.05 -10.00 145.05 55 0.24 58.17 -10.00 280.41 -10.00 164.77 60 0.00 53.51 -10.00 285.28 -10.00 170.66 65 0.00 48.85 -10.00 285.28 -10.00 170.66 70 0.00 44.24 -9.15 290.77 -9.15 173.98 75 0.00 39.71 -7.97 298.50 -7.97 178.53 80 0.00 35.28 -6.69 307.22 -6.69 183.49 85 0.00 31.00 -5.28 317.67 -5.28 188.90 90 0.00 26.94 -3.76 328.58 -3.76 194.75 95 0.00 23.22 -2.15 340.42 -2.15 200.92 100 0.00 20.02 -0.54 352.49 -0.54 205.41 105 0.44 17.24 1.08 333.74 1.08 190.76 110 0.52 15.93 1.94 331.40 1.94 187.63 115 0.94 15.77 2.06 301.45 2.06 162.90 120 0.94 17.47 0.94 292.81 0.94 157.73 125 0.99 20.22 -0.65 277.73 -0.65 148.27 130 1.06 23.57 -2.31 263.42 -2.31 139.64 135 1.13 26.83 -3.72 251.63 -3.72 133.99 140 1.18 29.94 -4.90 242.35 -4.90 128.65 145 1.23 32.84 -5.91 234.93 -5.91 124.18 150 1.39 35.40 -6.73 225.15 -6.73 117.54 155 1.34 37.84 -7.45 222.91 -7.45 116.63 160 0.76 40.40 -8.16 244.22 -8.16 134.05 165 0.73 42.11 -8.61 243.50 -8.61 134.08 170 0.49 43.75 -9.02 256.70 -9.02 143.41 175 0.46 45.55 -9.46 257.25 -9.46 144.46 180 0.50 47.66 -9.95 250.62 -9.95 139.88 185 0.00 50.47 -10.00 285.28 -10.00 170.66 Frequency Coordination and Interference Analysis Report 06/04/2010 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' 1.0" N Longitude (NAD 83) 77° 34' 23.0" W Ground Elevation (AMSL) 85.34 m / 280.0 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model Vertex Corp. 9.3 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 53.16 -10.00 285.28 -10.00 170.66 195 0.00 56.07 -10.00 285.28 -10.00 170.66 200 0.00 59.17 -10.00 285.28 -10.00 170.66 205 0.00 62.42 -10.00 285.28 -10.00 170.66 210 0.00 65.80 -10.00 285.28 -10.00 170.66 215 0.22 69.21 -10.00 283.26 -10.00 168.90 220 0.25 72.79 -10.00 279.42 -10.00 163.90 225 0.26 76.43 -10.00 277.35 -10.00 162.09 230 0.28 80.12 -10.00 275.63 -10.00 160.60 235 0.29 83.85 -10.00 273.92 -10.00 159.13 240 0.38 87.60 -10.00 263.09 -10.00 149.99 245 0.42 91.37 -10.00 258.37 -10.00 146.12 250 0.43 95.14 -10.00 257.51 -10.00 145.42 255 0.41 98.88 -10.00 260.28 -10.00 147.68 260 0.43 102.60 -10.00 257.91 -10.00 145.74 265 0.55 106.30 -10.00 246.37 -10.00 136.74 270 0.55 109.93 -10.00 246.33 -10.00 136.72 275 0.56 113.47 -10.00 245.68 -10.00 136.22 280 0.52 116.90 -10.00 248.68 -10.00 138.53 285 0.54 120.23 -10.00 247.40 -10.00 137.54 290 0.53 123.41 -10.00 247.83 -10.00 137.87 295 0.55 126.42 -10.00 246.48 -10.00 136.83 300 0.56 129.22 -10.00 245.75 -10.00 136.27 305 0.53 131.73 -10.00 247.62 -10.00 137.71 310 0.54 133.96 -10.00 247.34 -10.00 137.49 315 0.62 135.92 -10.00 241.96 -10.00 133.40 320 0.76 137.54 -10.00 233.51 -10.00 128.23 325 0.63 138.47 -10.00 241.44 -10.00 133.01 330 0.63 139.03 -10.00 241.50 -10.00 133.06 335 0.69 134.48 -10.00 238.10 -10.00 131.76 340 0.79 129.85 -10.00 232.10 -10.00 127.14 345 0.69 125.13 -10.00 237.54 -10.00 131.33 350 0.72 120.40 -10.00 236.29 -10.00 130.38 355 0.68 115.63 -10.00 238.15 -10.00 131.79 Frequency Coordination and Interference Analysis Report 06/04/2010 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 Principal Frequency Planner COMSEARCH 19700 Janelia Farm Boulevard Ashburn, Va. 20147 DATED: June 4, 2010 Frequency Coordination and Interference Analysis Report 06/04/2010 Page 11 of 11


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Document Modified: 2019-04-23 03:41:43
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