Attachment Coordination Report

This document pretains to SES-LIC-20110427-00512 for License on a Satellite Earth Station filing.

IBFS_SESLIC2011042700512_886366

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for CACI Technologies, Inc. ABERDEEN PROVING GROUND, MD Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 April 26, 2011

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 04/26/2011 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 04/26/2011 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 DELAWARE STATE - DTI SCTF NET Baltimore Gas and Electric Company Delmarva Power & Light Company New Jersey, State of -NJ Transit State of Maryland, MIEMSS Atlantic City Electric Company New Cingular Wireless PCS LLC- DE/NH/RI Baltimore County of Maryland New Cingular Wireless PCS LLC - DC St. Mary's County Dept. of Public Safety WASHINGTON SUBURBAN SANITARY COMMISSION New Cingular Wireless PCS - VA/DC/MD Open Range Communications Cellco Prtnrshp - Phil. Tri-State Rgn Exelon Generation Company, L.L.C Cellco Partnership-Newark-Dallas Verizon MCI Communications Services Inc. No other carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 04/26/2011 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 03/04/2011. Company AB Services LLC AT&T COMMUNICATIONS OF MARYLAND INC AT&T COMMUNICATIONS OF VIRGINIA INC AT&T CORP Allentown SMSA Limited Partnership Alltel Communications of Petersburg Inc Atlantic Broadband (Delmar), LLC Atlantic Broadband (Penn), LLC Atlantic City Electric Company BAY BROADBAND COMMUNICATIONS LLC Baltimore County of Maryland Baltimore Gas and Electric Company Berks, County of CHESTER, COUNTY OF COLLEGE OF SOUTHERN MARYLAND Cellco Partnership - Southern Virginia Cellco Partnership- PA Region Cellco Partnership-Newark-Dallas Verizon Cellco Partnership-Washington/Baltimore Cellco Prtnrshp - Phil. Tri-State Rgn Charles, County of Comprehensive Wireless LLC Conterra Ultra Broadband, LLC Coral Reef Tecnologies Ltd County of Frederick County of Stafford County of Warren DAUPHIN COUNTY EMERGENCY MANAGEMENT DELAWARE STATE - DTI Delmarva Power & Light Company Direct Broadcast Services, Inc. EASTERN PENNSYLVANIA EMS COUNCIL Enoch Pratt Free Library Exelon Generation Company, L.L.C FELHC, Inc. Frederick County Fundamental Broadcasting LLC Gloucester, County of Hardy Cellular Telephone Company International Communications Group, Inc. Frequency Coordination and Interference Analysis Report 04/26/2011 Page 5 of 11

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 NEW JERSEY STATE POLICE 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 -NE Reg New Cingular Wireless PCS LLC- DE/NH/RI New Cingular Wireless PCS of PA LLC New Cingular Wireless PCS, LLC - PA New Jersey Turnpike Authority-Pkwy Div New Jersey, State of -NJ Transit Norfolk Southern Railway Northern Virginia Electric Cooperative OCEAN, COUNTY OF Ocean, County of-Div of Wireless Tech. Open Range Communications PENNSYLVANIA TURNPIKE COMMISSION PSEG Services Corporation Peco Energy Company Penn Service Microwave Co., Inc. Prince George's County Prince William, County of RAPPAHANNOCK ELECTRIC COOPERATIVE SCTF NET SHENANDOAH VALLEY ELECTRIC COOPERATIVE Southern Maryland Electric Cooperative I St. Mary's County Dept. of Public Safety 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 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 04/26/2011 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 04/26/2011 Page 7 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 04/26/2011 Job Number: 110304COMSGE02 Administrative Information Status ENGINEER PROPOSAL Call Sign Licensee Code CACII Licensee Name CACI Technologies, Inc. Site Information ABERDEEN PROVING GROUND, MD Venue Name OBJECTIVE SITE Latitude (NAD 83) 39° 28' 33.2" N Longitude (NAD 83) 76° 7' 34.7" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 8.53 m / 28.0 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 5° W to 143° West Longitude Azimuth Range 102.3° to 254.8° Corresponding Elevation Angles 5.8° / 9.1° Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Information Receive - FCC32 Transmit - FCC32 Manufacturer General Dynamics General Dynamics Model 9.0 Meter 9.0 Meter Gain / Diameter 50.0 dBi / 9.0 m 53.7 dBi / 9.0 m 3-dB / 15-dB Beamwidth 0.54° / 1.20° 0.40° / 0.80° Max Available RF Power (dBW/4 kHz) -2.7 (dBW/MHz) 21.3 Maximum EIRP (dBW/4 kHz) 51.0 (dBW/MHz) 75.0 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) 250KG7D - 36M0F8W / 3700.0 - 4200.0 250KG7D - 36M0F8W / 5925.0 - 6425.0 Max Great Circle Coordination Distance 634.2 km / 394.0 mi 377.8 km / 234.7 mi Precipitation Scatter Contour Radius 602.9 km / 374.6 mi 101.0 km / 62.8 mi Frequency Coordination and Interference Analysis Report 04/26/2011 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 ABERDEEN PROVING GROUND, MD Licensee Name CACI Technologies, Inc. Latitude (NAD 83) 39° 28' 33.2" N Longitude (NAD 83) 76° 7' 34.7" W Ground Elevation (AMSL) 8.53 m / 28.0 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model General Dynamics 9.0 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 0.32 102.21 -10.00 271.00 -10.00 156.63 5 0.30 97.23 -10.00 272.92 -10.00 158.27 10 0.00 92.25 -10.00 285.28 -10.00 170.66 15 0.00 87.28 -10.00 285.28 -10.00 170.66 20 0.00 82.30 -10.00 285.28 -10.00 170.66 25 0.00 77.33 -10.00 285.28 -10.00 170.66 30 0.00 72.36 -10.00 285.28 -10.00 170.66 35 0.00 67.39 -10.00 285.28 -10.00 170.66 40 0.00 62.42 -10.00 285.28 -10.00 170.66 45 0.00 57.45 -10.00 285.28 -10.00 170.66 50 0.00 52.49 -10.00 285.28 -10.00 170.66 55 0.00 47.54 -9.93 285.75 -9.93 170.95 60 0.00 42.59 -8.73 293.47 -8.73 175.58 65 0.00 37.65 -7.39 302.40 -7.39 180.77 70 0.00 32.73 -5.87 313.52 -5.87 186.64 75 0.00 27.83 -4.11 326.03 -4.11 193.40 80 0.00 22.97 -2.03 341.28 -2.03 201.36 85 0.00 18.19 0.51 360.50 0.51 209.48 90 0.00 13.55 3.70 385.71 3.70 222.73 95 0.00 9.29 7.80 419.44 7.80 241.51 100 0.00 6.23 12.14 634.16 12.14 377.75 105 0.00 6.42 11.82 513.85 11.82 294.37 110 0.00 9.63 7.41 416.04 7.41 239.63 115 0.00 13.32 3.89 387.20 3.89 223.53 120 0.00 16.94 1.27 366.45 1.27 212.55 125 0.00 20.48 -0.78 350.63 -0.78 206.10 130 0.00 23.90 -2.46 338.08 -2.46 199.71 135 0.00 27.19 -3.86 327.84 -3.86 194.36 140 0.00 30.31 -5.04 319.39 -5.04 189.84 145 0.00 33.24 -6.04 311.71 -6.04 185.99 150 0.00 35.92 -6.88 305.88 -6.88 182.74 155 0.00 38.32 -7.58 301.11 -7.58 180.03 160 0.00 40.38 -8.15 297.30 -8.15 177.83 165 0.00 42.05 -8.59 294.37 -8.59 176.12 170 0.00 43.29 -8.91 292.30 -8.91 174.89 175 0.00 44.06 -9.10 291.07 -9.10 174.16 180 0.00 44.31 -9.16 290.66 -9.16 173.91 185 0.00 44.06 -9.10 291.07 -9.10 174.16 Frequency Coordination and Interference Analysis Report 04/26/2011 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 ABERDEEN PROVING GROUND, MD Licensee Name CACI Technologies, Inc. Latitude (NAD 83) 39° 28' 33.2" N Longitude (NAD 83) 76° 7' 34.7" W Ground Elevation (AMSL) 8.53 m / 28.0 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model General Dynamics 9.0 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 43.29 -8.91 292.30 -8.91 174.89 195 0.00 42.05 -8.59 294.37 -8.59 176.12 200 0.00 40.38 -8.15 297.29 -8.15 177.83 205 0.00 38.32 -7.58 301.11 -7.58 180.03 210 0.00 35.92 -6.88 305.87 -6.88 182.74 215 0.00 33.24 -6.04 311.71 -6.04 185.99 220 0.00 30.32 -5.04 319.38 -5.04 189.83 225 0.00 27.19 -3.86 327.85 -3.86 194.36 230 0.00 23.90 -2.46 338.09 -2.46 199.72 235 0.00 20.48 -0.78 350.64 -0.78 206.11 240 0.00 16.95 1.27 366.43 1.27 212.54 245 0.00 13.32 3.89 387.21 3.89 223.53 250 0.00 10.25 6.74 410.26 6.74 236.44 255 0.00 9.06 8.07 489.08 8.07 280.28 260 0.00 10.43 6.54 408.61 6.54 235.53 265 0.00 13.60 3.66 385.36 3.66 222.54 270 0.00 17.63 0.84 363.09 0.84 210.81 275 0.00 22.05 -1.59 344.59 -1.59 203.05 280 0.00 26.67 -3.65 329.37 -3.65 195.17 285 0.00 31.40 -5.42 316.68 -5.42 188.37 290 0.00 36.19 -6.97 305.31 -6.97 182.42 295 0.00 41.03 -8.33 296.14 -8.33 177.15 300 0.28 45.86 -9.53 278.41 -9.53 162.27 305 0.28 50.75 -10.00 274.78 -10.00 159.87 310 0.31 55.66 -10.00 271.87 -10.00 157.37 315 0.46 60.56 -10.00 253.99 -10.00 142.60 320 0.44 65.49 -10.00 256.91 -10.00 144.94 325 0.43 70.43 -10.00 257.57 -10.00 145.47 330 0.38 75.37 -10.00 263.79 -10.00 150.57 335 0.45 80.30 -10.00 255.37 -10.00 143.70 340 0.44 85.25 -10.00 255.93 -10.00 144.15 345 0.68 90.19 -10.00 238.68 -10.00 132.19 350 0.56 95.14 -10.00 246.01 -10.00 136.47 355 0.46 100.08 -10.00 254.08 -10.00 142.67 Frequency Coordination and Interference Analysis Report 04/26/2011 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. BY: _ Gary K. Edwards Senior Manager COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 DATED: April 26, 2011 Frequency Coordination and Interference Analysis Report 04/26/2011 Page 11 of 11


Document Created: 2011-04-27 09:56:27
Document Modified: 2011-04-27 09:56:27
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