Attachment Frequency Coordinati

This document pretains to SES-MOD-20101206-01515 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2010120601515_854368

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for Globecomm Systems, Inc. LAUREL, MD (9.3 Meter) Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 November 29, 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 11/17/2010 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 11/17/2010 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 proposed transmit-receive earth station. Company Baltimore County of Maryland Cellco Partnership-Washington/Baltimore MCI Communications Services Inc. New Cingular Wireless PCS - VA/DC/MD New Cingular Wireless PCS LLC - DC State of Maryland, MIEMSS WASHINGTON SUBURBAN SANITARY COMMISSION No other carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 11/17/2010 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 10/07/2010. Company 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 Atlantic City Electric Company 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 Cellco Prtnrshp - Phil. Tri-State Rgn Charles, County of Conterra Ultra Broadband, LLC County of Frederick County of Stafford DELAWARE STATE - DTI Delmarva Power & Light Company Enoch Pratt Free Library Exelon Generation Company, L.L.C Frederick County Hardy Cellular Telephone Company Harrisonburg-Rockingham ECC International Communications Group, Inc. LB Tower Company LLC Local Communications Network, Inc. Loudoun, County of MCI Communications Services Inc. METROPOLITAN AREA NETWORKS, INC. Maryland Public Broadcasting Commission Maryland State Highway Administration Maryland, State of - Budget & Management 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- DE/NH/RI Frequency Coordination and Interference Analysis Report 11/17/2010 Page 5 of 11

New Cingular Wireless PCS, LLC - PA Northern Virginia Electric Cooperative Open Range Communications PSEG Services Corporation Peco Energy Company Prince George's County Prince William, County of RAPPAHANNOCK ELECTRIC COOPERATIVE SCTF NET SHENANDOAH VALLEY ELECTRIC COOPERATIVE Southern Maryland Electric Cooperative I State of Maryland, MIEMSS State of WV DHHR/BPH STECS Texas Eastern Communications, Inc. 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 Washington D.C. SMSA L.P. Washington Gas Light Company York County Dept of Emergency Services Frequency Coordination and Interference Analysis Report 11/17/2010 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 11/17/2010 Page 7 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 11/17/2010 Job Number: 101007COMSGE01 Administrative Information Status ENGINEER PROPOSAL Call Sign E010177 Licensee Code SWSITE Licensee Name Globecomm Systems, Inc. Site Information LAUREL, MD Venue Name Latitude (NAD 83) 39° 6' 45.5" N Longitude (NAD 83) 76° 49' 58.0" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 73.2 m / 240.2 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 5° W to 149° West Longitude Azimuth Range 101.7° to 258.5° Corresponding Elevation Angles 5.3° / 5.1° Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Information Receive - FCC32 Transmit - FCC32 Manufacturer Andrew Andrew Model 9.3 Meter 9.3 Meter Gain / Diameter 50.7 dBi / 9.3 m 53.9 dBi / 9.3 m 3-dB / 15-dB Beamwidth 0.50° / 1.00° 0.32° / 0.65°             !  "#"$%    & '    '  %() *  (+ , - +) ./ 0(12 " -156.0 dBW/MHz 20% -154.0 dBW/4 kHz 20%  34)2 " -146.0 dBW/MHz 0.01% -131.0 dBW/4 kHz 0.0025% Frequency Information Receive 4.0 GHz Transmit 6.1 GHz $"..(  5# (+6 (1  789: &;: & ;;;9;;; 789: &;: 7!97;97;   : )<+ <()(=.)(+ 683.3 km / 424.5 mi 280.1 km / 174.0 mi  +>))(3+)) <()# #. 618.2 km / 384.1 mi 100.0 km / 62.1 mi Frequency Coordination and Interference Analysis Report 11/17/2010 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 LAUREL, MD Licensee Name Globecomm Systems, Inc. Latitude (NAD 83) 39° 6' 45.5" N Longitude (NAD 83) 76° 49' 58.0" W Ground Elevation (AMSL) 73.2 m / 240.2 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model Andrew 9.3 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 -16.1 (dBW/4 kHz)    Receive 4.0 GHz Transmit 6.1 GHz  ( () (( ( <()( ( <()( "#)4? $ )(? =.+"()(? :( =.)(+ " :( =.)(+ " 0 0.32 101.43 -10.00 270.97 -10.00 117.82 5 0.33 96.67 -10.00 269.16 -10.00 116.60 10 0.30 91.69 -10.00 273.23 -10.00 119.33 15 0.27 86.71 -10.00 277.06 -10.00 121.87 20 0.21 81.73 -10.00 284.55 -10.00 126.77 25 0.25 76.75 -10.00 279.15 -10.00 123.24 30 0.00 71.78 -10.00 285.28 -10.00 127.24 35 0.00 66.81 -10.00 285.28 -10.00 127.24 40 0.00 61.83 -10.00 285.28 -10.00 127.24 45 0.00 56.86 -10.00 285.28 -10.00 127.24 50 0.00 51.89 -10.00 285.28 -10.00 127.24 55 0.00 46.93 -9.79 286.64 -9.79 127.80 60 0.00 41.98 -8.58 294.50 -8.58 131.03 65 0.00 37.03 -7.21 303.62 -7.21 133.45 70 0.00 32.10 -5.66 315.00 -5.66 137.81 75 0.00 27.19 -3.86 327.86 -3.86 143.24 80 0.00 22.31 -1.71 343.63 -1.71 150.22 85 0.00 17.51 0.92 363.69 0.92 159.53 90 0.00 12.84 4.28 389.80 4.28 174.09 95 0.00 8.56 8.69 427.25 8.69 191.11 100 0.00 5.60 13.29 669.53 13.29 273.88 105 0.00 6.28 12.06 510.77 12.06 212.29 110 0.00 9.76 7.26 414.76 7.26 185.61 115 0.00 13.47 3.77 386.24 3.77 172.09 120 0.00 17.12 1.16 365.60 1.16 160.45 125 0.00 20.67 -0.88 349.88 -0.88 153.07 130 0.22 23.96 -2.49 335.75 -2.49 146.08 135 0.00 27.43 -3.96 327.17 -3.96 142.94 140 0.00 30.58 -5.14 318.71 -5.14 139.35 145 0.00 33.53 -6.13 311.06 -6.13 136.45 150 0.00 36.23 -6.98 305.23 -6.98 134.09 155 0.00 38.65 -7.68 300.47 -7.68 133.44 160 0.00 40.74 -8.25 296.65 -8.25 131.90 165 0.00 42.43 -8.69 293.73 -8.69 130.72 170 0.00 43.69 -9.01 291.66 -9.01 129.87 175 0.00 44.46 -9.20 290.43 -9.20 129.37 180 0.00 44.72 -9.26 290.01 -9.26 129.20 185 0.00 44.46 -9.20 290.43 -9.20 129.37 Frequency Coordination and Interference Analysis Report 11/17/2010 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 LAUREL, MD Licensee Name Globecomm Systems, Inc. Latitude (NAD 83) 39° 6' 45.5" N Longitude (NAD 83) 76° 49' 58.0" W Ground Elevation (AMSL) 73.2 m / 240.2 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model Andrew 9.3 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 -16.1 (dBW/4 kHz)    Receive 4.0 GHz Transmit 6.1 GHz  ( () (( ( <()( ( <()( "#)4? $ )(? =.+"()(? :( =.)(+ " :( =.)(+ " 190 0.00 43.69 -9.01 291.66 -9.01 129.87 195 0.00 42.43 -8.69 293.73 -8.69 130.72 200 0.00 40.74 -8.25 296.66 -8.25 131.90 205 0.00 38.65 -7.68 300.47 -7.68 133.44 210 0.00 36.23 -6.98 305.23 -6.98 134.09 215 0.00 33.53 -6.14 311.05 -6.14 136.45 220 0.00 30.58 -5.14 318.72 -5.14 139.36 225 0.00 27.43 -3.96 327.16 -3.96 142.94 230 0.00 24.12 -2.56 337.37 -2.56 147.41 235 0.00 20.67 -0.88 349.87 -0.88 153.06 240 0.00 17.11 1.17 365.61 1.17 160.45 245 0.24 13.31 3.89 382.04 3.89 168.25 250 0.28 9.57 7.47 406.58 7.47 178.48 255 0.43 5.83 12.86 504.44 12.86 203.27 260 0.42 4.89 14.77 683.31 14.77 280.13 265 0.49 7.93 9.51 397.36 9.51 163.25 270 0.45 12.36 4.70 361.52 4.70 148.27 275 0.41 17.11 1.17 337.91 1.17 139.81 280 0.44 21.95 -1.53 314.27 -1.53 131.11 285 0.50 26.84 -3.72 290.44 -3.72 120.26 290 0.37 31.79 -5.56 293.38 -5.56 125.42 295 0.42 36.73 -7.13 276.25 -7.13 116.82 300 0.58 41.67 -8.50 253.57 -8.50 103.54 305 0.60 46.64 -9.72 244.70 -9.72 100.00 310 0.48 51.62 -10.00 252.20 -10.00 104.94 315 0.38 56.60 -10.00 263.26 -10.00 112.60 320 0.47 61.58 -10.00 253.37 -10.00 105.75 325 0.47 66.56 -10.00 253.25 -10.00 105.68 330 0.71 71.53 -10.00 236.74 -10.00 100.00 335 0.54 76.52 -10.00 247.44 -10.00 101.65 340 0.37 81.50 -10.00 264.02 -10.00 113.12 345 0.50 86.49 -10.00 250.31 -10.00 103.60 350 0.35 91.47 -10.00 267.34 -10.00 115.37 355 0.33 96.45 -10.00 268.78 -10.00 116.35 Frequency Coordination and Interference Analysis Report 11/17/2010 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. BY: _ Gary K. Edwards Senior Manager COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 DATED: November 29, 2010 Frequency Coordination and Interference Analysis Report 11/17/2010 Page 11 of 11


Document Created: 2010-12-01 14:23:02
Document Modified: 2010-12-01 14:23:02
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