Attachment Exhibit B

This document pretains to SES-LIC-20100910-01154 for License on a Satellite Earth Station filing.

IBFS_SESLIC2010091001154_839427

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for CACI ABERDEEN PROVING GROUND, MD Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 September 10, 2010

TABLE OF CONTENTS 1. CONCLUSIONS ............................................................................................................................................ 3 2. SUMMARY OF RESULTS ............................................................................................................................ 4 3. SUPPLEMENTAL SHOWING....................................................................................................................... 5 4. EARTH STATION COORDINATION DATA.................................................................................................. 9 5. CERTIFICATION......................................................................................................................................... 13 Frequency Coordination and Interference Analysis Report 09/10/2010 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 09/10/2010 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 METRO NETWORKS COMMUNICATIONS INC No other carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 09/10/2010 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 06/22/2010. Company ACCELACOM-BALTIMORE LLC ALLEGANY COLLEGE OF MARYLAND AMFM RADIO LICENSES, LLC ART Licensing Corp. AT&T COMMUNICATIONS OF MARYLAND INC AT&T COMMUNICATIONS OF VIRGINIA INC AT&T CORP Airband Communications Inc Albermarle, County of, Virginia Allegheny Industries Inc. Allegheny Power Service Corporation Allentown SMSA Limited Partnership Alltel Communications of Virginia #1 LLC Alltel Communications of Virginia, Inc. Atlantic Broadband (Delmar), LLC Atlantic Broadband (Penn), LLC BAY BROADBAND COMMUNICATIONS LLC BEDFORD COUNTY 911 Baltimore County of Maryland Baltimore Gas and Electric Company Believe Wireless, LLC Berks, County of Blaze Broadband Bucks, County of Business Only Broadband, LLC CBS Communications Services CHESTER, COUNTY OF COMMONWEALTH OF PENNSYLVANIA,RADIO PROJ. COUNTY OF MORRIS Cape May County Municipal Utilities Auth Cape May County, MIS Department Cellco Partnership - Southern Virginia Cellco Partnership- PA Region Cellco Partnership-Newark-Dallas Verizon Cellco Prtnrshp - Phil. Tri-State Rgn City of Laurel City of Ocean City, MD Clearwire Spectrum Holdings III, LLC Clearwire Spectrum Holdings LLC Conterra Ultra Broadband, LLC Frequency Coordination and Interference Analysis Report 09/10/2010 Page 5 of 13

County of Burlington County of Orange Div of Wireless Tech County of Stafford County of Warren County of York Cricket Communications, Inc Cumberland, County of D&E Systems, Inc. DELAWARE STATE - DTI Direct Broadcast Services, Inc. ESSEX, COUNTY OF-SHERIFF'S OFFICE Eduro Networks LLC Enoch Pratt Free Library Exelon Generation Company, L.L.C FiberTower Network Services Corp. Franklin County Dept. of Emergency Servi Frederick County GEORGE MASON UNIVERSITY INSTR FNDTION Gannett Company, Inc. Globecomm Systems, Inc. HANOVER COUNTY HENRICO COUNTY Hardy Cellular Telephone Company Harrisonburg-Rockingham ECC Hopewell Radiology Group Hudson County MIS Department Hudson County Prosecutor's Office Huntingdon County of International Communications Group, Inc. JUNIATA COUNTY OF Kent County Levy Court LANCASTER COUNTY OF LB Tower Company LLC LOWER SHORE BROADBAND COOPERATIVE Last Mile Inc. Lehigh, County of Loudoun County Public Schools Loudoun Wireless LLC Loudoun, County of M&T Bank MARYLAND PUBLIC BROADCASTING COMMISSION METRO NETWORKS COMMUNICATIONS INC METROPOLITAN AREA NETWORKS, INC. MIFFLIN COUNTY MIT LINCOLN LABORATORY MONROE COUNTY CONTROL CENTER Manchester, Township of Maryland Port Administration Maryland State Highway Administration Maryland, State of - Budget & Management Middle East Broadcasting Networks, Inc. Montgomery, County of NEW JERSEY STATE POLICE NEW JERSEY TRANSIT RAIL OPERATIONS,INC NEW YORK CITY POLICE DEPARTMENT NOROC Broadband LLC Frequency Coordination and Interference Analysis Report 09/10/2010 Page 6 of 13

NSAC LLC National Radio Astronomy Observatory Netrepid, Inc. New Cingular Wireless PCS LLC -NJ New Cingular Wireless PCS - VA/DC/MD New Cingular Wireless PCS LLC - DC New Cingular Wireless PCS of PA LLC New Cingular Wireless PCS, LLC - PA New Cingular Wireless PCS, LLC - WV/VA New Jersey Turnpike Authority New Jersey, State of -NJ Transit New York SMSA LP (NY Metro Region) New York, CIty of Nextlink Wireless, Inc Northeast Pennsylvania SMSA LTD Prtnrsh Northern Virginia Electric Cooperative ORBCOMM GLOBAL LP Open Range Communications PENNSYLVANIA MICROWAVE NETWORK INC. PENNSYLVANIA TURNPIKE COMMISSION PSEG Services Corporation Philly Sports Wireless Pontis Communications, Inc. Port Authority of New York & New Jersey Port Networks, LLC Public Broadcasting Service QUALCOMM INC. QUICK LINK CONNECTIONS INC RAYTHEON COMPANY Roadstar Internet, Inc. Rural Broadband Network Services LLC SANOFI PASTEUR SCHUYLKILL, COUNTY OF SCTF NET SECOM NET SOUTHEASTERN PENNSYLVANIA TRANSIT AUTH Salem County Information Technology State of Maryland, MIEMSS Stevens Institute of Technology Sussex, County of Synergy Telecommunications Corp TELEMARK NETWORKS, INC Telecom Transport Management, Inc Thacher, Proffitt & Wood LLP Towerstream, Inc Town of Woodbridge, Police Department Township of Jackson Trans Video Communications, Inc UNION, COUNTY OF UNIVERSITY OF MARYLAND USCOC of Cumberland, Inc. Verizon New Jersey, Inc. Verizon Virginia, Inc. Virginia Broadband, LLC Virginia Electric & Power Company WASHINGTON SUBURBAN SANITARY COMMISSION Frequency Coordination and Interference Analysis Report 09/10/2010 Page 7 of 13

WEST VIRGINIA RADIO CORPORATION WHYY, INC. WICOMICO BOARD OF EDUCATION Warrenton Fauquier Joint Communications Washington Gas Light Company Wayne, Township of Frequency Coordination and Interference Analysis Report 09/10/2010 Page 8 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 09/10/2010 Page 9 of 13

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 09/09/2010 Job Number: 100622COMSGE02 Administrative Information Status ENGINEER PROPOSAL Call Sign Licensee Code CACII Licensee Name CACI Site Information ABERDEEN PG, MD Venue Name Latitude (NAD 83) 39° 29' 6.7" N Longitude (NAD 83) 76° 9' 33.4" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 17.98 m / 59.0 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 5° W to 143° West Longitude Azimuth Range 102.2° 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 FSC-133 FSC-133 Gain / Diameter 58.0 dBi / 9.2 m 60.1 dBi / 9.2 m 3-dB / 15-dB Beamwidth 0.20° / 0.49° 0.16° / 0.39° Max Available RF Power (dBW/4 kHz) -14.0 (dBW/MHz) 10.0 Maximum EIRP (dBW/4 kHz) 46.1 (dBW/MHz) 70.1 Interference Objectives: Long Term -156.0 dBW/MHz 20% -151.0 dBW/4 kHz 20% Short Term -146.0 dBW/MHz 0.01% -128.0 dBW/4 kHz 0.0025% Frequency Information Receive 11.0 GHz Transmit 14.0 GHz Emission / Frequency Range (MHz) 250KG7D - 36M0F8W / 10950.0 - 11200.0 250KG7D - 36M0F8W / 14000.0 - 14500.0 250KG7D - 36M0F8W / 11450.0 - 12700.0 Max Great Circle Coordination Distance 602.5 km / 374.3 mi 272.4 km / 169.2 mi Precipitation Scatter Contour Radius 592.4 km / 368.1 mi 100.0 km / 62.1 mi Frequency Coordination and Interference Analysis Report 09/10/2010 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 ABERDEEN PG, MD Licensee Name CACI Latitude (NAD 83) 39° 29' 6.7" N Longitude (NAD 83) 76° 9' 33.4" W Ground Elevation (AMSL) 17.98 m / 59.0 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model General Dynamics 9.2 meter Antenna Mode Receive 11.0 GHz Transmit 14.0 GHz Interference Objectives: Long Term -156.0 dBW/MHz 20% -151.0 dBW/4 kHz 20% Short Term -146.0 dBW/MHz 0.01% -128.0 dBW/4 kHz 0.0025% Max Available RF Power -14.0 (dBW/4 kHz) Receive 11.0 GHz Transmit 14.0 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 0 0.51 102.19 -10.00 203.78 -10.00 100.00 5 0.74 97.22 -10.00 195.06 -10.00 100.00 10 0.65 92.24 -10.00 199.41 -10.00 100.00 15 0.59 87.26 -10.00 202.32 -10.00 100.00 20 0.44 82.28 -10.00 209.15 -10.00 100.00 25 0.34 77.30 -10.00 218.22 -10.00 105.06 30 0.00 72.34 -10.00 231.37 -10.00 115.80 35 0.00 67.37 -10.00 231.37 -10.00 115.80 40 0.00 62.40 -10.00 231.37 -10.00 115.80 45 0.00 57.43 -10.00 231.37 -10.00 115.80 50 0.00 52.47 -10.00 231.37 -10.00 115.80 55 0.00 47.51 -9.92 231.72 -9.92 116.00 60 0.00 42.56 -8.73 237.03 -8.73 118.98 65 0.00 37.63 -7.39 243.19 -7.39 122.36 70 0.00 32.70 -5.86 250.56 -5.86 126.24 75 0.00 27.80 -4.10 259.28 -4.10 129.54 80 0.00 22.95 -2.02 270.03 -2.02 135.23 85 0.00 18.16 0.52 283.78 0.52 142.86 90 0.00 13.52 3.73 299.22 3.73 153.59 95 0.00 9.26 7.84 327.39 7.84 170.44 100 0.00 6.20 12.19 602.48 12.19 272.41 105 0.00 6.40 11.85 453.08 11.85 211.08 110 0.00 9.63 7.41 324.21 7.41 168.82 115 0.00 13.32 3.89 300.23 3.89 154.16 120 0.00 16.94 1.28 288.00 1.28 145.28 125 0.00 20.48 -0.78 276.62 -0.78 138.84 130 0.00 23.90 -2.46 267.71 -2.46 133.98 135 0.00 27.19 -3.86 260.51 -3.86 130.18 140 0.00 30.31 -5.04 254.61 -5.04 128.37 145 0.00 33.23 -6.04 249.72 -6.04 125.80 150 0.00 35.91 -6.88 245.69 -6.88 123.64 155 0.00 38.31 -7.58 242.27 -7.58 121.86 160 0.00 40.37 -8.15 239.65 -8.15 120.43 165 0.00 42.04 -8.59 237.63 -8.59 119.32 170 0.00 43.28 -8.91 236.21 -8.91 118.53 175 0.00 44.05 -9.10 235.36 -9.10 118.05 180 0.00 44.30 -9.16 235.07 -9.16 117.89 185 0.00 44.04 -9.10 235.36 -9.10 118.05 Frequency Coordination and Interference Analysis Report 09/10/2010 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 ABERDEEN PG, MD Licensee Name CACI Latitude (NAD 83) 39° 29' 6.7" N Longitude (NAD 83) 76° 9' 33.4" W Ground Elevation (AMSL) 17.98 m / 59.0 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model General Dynamics 9.2 meter Antenna Mode Receive 11.0 GHz Transmit 14.0 GHz Interference Objectives: Long Term -156.0 dBW/MHz 20% -151.0 dBW/4 kHz 20% Short Term -146.0 dBW/MHz 0.01% -128.0 dBW/4 kHz 0.0025% Max Available RF Power -14.0 (dBW/4 kHz) Receive 11.0 GHz Transmit 14.0 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 190 0.00 43.28 -8.91 236.21 -8.91 118.53 195 0.00 42.04 -8.59 237.63 -8.59 119.32 200 0.00 40.37 -8.15 239.64 -8.15 120.43 205 0.00 38.31 -7.58 242.27 -7.58 121.86 210 0.00 35.91 -6.88 245.69 -6.88 123.64 215 0.00 33.23 -6.04 249.72 -6.04 125.79 220 0.00 30.31 -5.04 254.60 -5.04 128.37 225 0.00 27.19 -3.86 260.51 -3.86 130.18 230 0.00 23.90 -2.46 267.72 -2.46 133.98 235 0.00 20.47 -0.78 276.64 -0.78 138.85 240 0.00 16.95 1.27 287.97 1.27 145.26 245 0.00 13.32 3.89 300.24 3.89 154.17 250 0.00 10.25 6.73 319.20 6.73 166.22 255 0.00 9.08 8.04 425.70 8.04 199.92 260 0.00 10.46 6.51 317.64 6.51 165.38 265 0.00 13.64 3.63 298.64 3.63 153.25 270 0.00 17.67 0.82 285.44 0.82 143.81 275 0.23 22.00 -1.56 269.62 -1.56 134.24 280 0.42 26.57 -3.61 239.70 -3.61 115.01 285 0.54 31.29 -5.39 221.78 -5.39 102.64 290 0.65 36.09 -6.93 209.32 -6.93 100.00 295 0.70 40.94 -8.30 204.00 -8.30 100.00 300 0.79 45.81 -9.52 194.79 -9.52 100.00 305 0.66 50.73 -10.00 199.04 -10.00 100.00 310 0.78 55.63 -10.00 192.99 -10.00 100.00 315 0.75 60.56 -10.00 194.43 -10.00 100.00 320 0.67 65.50 -10.00 198.61 -10.00 100.00 325 0.73 70.44 -10.00 195.78 -10.00 100.00 330 0.77 75.38 -10.00 193.49 -10.00 100.00 335 0.70 80.32 -10.00 197.19 -10.00 100.00 340 0.60 85.27 -10.00 201.83 -10.00 100.00 345 0.62 90.22 -10.00 201.14 -10.00 100.00 350 0.60 95.16 -10.00 202.08 -10.00 100.00 355 0.51 100.10 -10.00 203.96 -10.00 100.00 Frequency Coordination and Interference Analysis Report 09/10/2010 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. BY: _ Gary K. Edwards Senior Manager COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 DATED: September 10, 2010 Frequency Coordination and Interference Analysis Report 09/10/2010 Page 13 of 13


Document Created: 2010-09-09 15:41:05
Document Modified: 2010-09-09 15:41:05
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