Attachment Exhibit A

This document pretains to SES-LIC-20100615-00698 for License on a Satellite Earth Station filing.

IBFS_SESLIC2010061500698_822158

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for Glacier Technologies, LLC FORT BRAGG, NC Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 June 15, 2010

TABLE OF CONTENTS 1. CONCLUSIONS ............................................................................................................................................ 3 2. SUMMARY OF RESULTS ............................................................................................................................ 4 3. SUPPLEMENTAL SHOWING....................................................................................................................... 5 4. EARTH STATION COORDINATION DATA.................................................................................................. 6 5. CERTIFICATION......................................................................................................................................... 10 Frequency Coordination and Interference Analysis Report 06/15/2010 Page 2 of 10

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 06/15/2010 Page 3 of 10

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 Clearwire Spectrum Holdings LLC Conterra Ultra Broadband, LLC No other carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 06/15/2010 Page 4 of 10

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 05/18/2010. Company Airband Communications Inc Bellsouth Telecommunications, Inc. Board of Trustees UNC at Chapel Hill Cellco Partnership - Southern Virginia City of Durham Clearwire Spectrum Holdings II, LLC Clearwire Spectrum Holdings III, LLC Clearwire Spectrum Holdings LLC Conterra Ultra Broadband, LLC County of Franklin, VA Farmers Telecommunications Cooperative Henry County School District Henry, County of METROPOLITAN AREA NETWORKS, INC. Microspace Communications Corporation National Radio Astronomy Observatory Network Dynamic North Carolina State Highway Patrol North Carolina Wireless, LLC Open Range Communications South Carolina Public Service Authority SunCom Wireless Company, LLC Time Warner NY Cable LLC Triad Telecom, Inc. WS/FC Interagency Communications Wilmington Cellular Telephone Company Frequency Coordination and Interference Analysis Report 06/15/2010 Page 5 of 10

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 06/15/2010 Page 6 of 10

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 06/15/2010 Job Number: 100518COMSGE01 Administrative Information Status ENGINEER PROPOSAL Call Sign Licensee Code GLATEC Licensee Name Glacier Technologies, LLC Site Information FORT BRAGG, NC Venue Name Latitude (NAD 83) 35° 8' 21.3" N Longitude (NAD 83) 78° 58' 56.6" W Climate Zone A Rain Zone 1 Ground Elevation (AMSL) 80.47 m / 264.0 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 7° W to 143° West Longitude Azimuth Range 100.6° to 254.3° Corresponding Elevation Angles 6.0° / 12.5° Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Information Receive - FCC32 Transmit - FCC32 Manufacturer Vertex RSI Vertex RSI Model 9.2 meter 9.2 meter Gain / Diameter 58.0 dBi / 9.2 m 60.0 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) 46.0 (dBW/MHz) 70.0 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 11.0 GHz Transmit 14.0 GHz Emission / Frequency Range (MHz) 1K60G7D - 6M20G7D / 10950.0 - 11200.0 1K60G7D - 6M20G7D / 14000.0 - 14500.0 1K60G7D - 6M20G7D / 11450.0 - 12700.0 Max Great Circle Coordination Distance 590.3 km / 366.8 mi 286.2 km / 177.8 mi Precipitation Scatter Contour Radius 648.6 km / 403.0 mi 100.0 km / 62.1 mi Frequency Coordination and Interference Analysis Report 06/15/2010 Page 7 of 10

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Coordination Values FORT BRAGG, NC Licensee Name Glacier Technologies, LLC Latitude (NAD 83) 35° 8' 21.3" N Longitude (NAD 83) 78° 58' 56.6" W Ground Elevation (AMSL) 80.47 m / 264.0 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model Vertex RSI 9.2 meter Antenna Mode Receive 11.0 GHz Transmit 14.0 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 -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 0.21 100.55 -10.00 230.84 -10.00 122.91 5 0.00 95.58 -10.00 231.37 -10.00 123.34 10 0.00 90.60 -10.00 231.37 -10.00 123.34 15 0.00 85.63 -10.00 231.37 -10.00 123.34 20 0.00 80.66 -10.00 231.37 -10.00 123.34 25 0.36 75.68 -10.00 216.40 -10.00 110.92 30 0.38 70.70 -10.00 214.69 -10.00 109.45 35 0.40 65.73 -10.00 212.95 -10.00 107.93 40 0.46 60.76 -10.00 207.62 -10.00 103.21 45 0.35 55.80 -10.00 217.16 -10.00 111.57 50 0.36 50.83 -10.00 216.65 -10.00 111.13 55 0.49 45.86 -9.54 206.70 -9.54 101.88 60 0.44 40.92 -8.30 216.43 -8.30 109.12 65 0.46 35.98 -6.90 220.78 -6.90 111.25 70 0.44 31.06 -5.30 229.40 -5.30 116.55 75 0.36 26.18 -3.45 245.79 -3.45 127.36 80 0.33 21.34 -1.23 260.87 -1.23 135.22 85 0.32 16.58 1.51 275.91 1.51 144.00 90 0.23 12.06 4.97 302.96 4.97 167.22 95 0.00 8.20 9.15 337.60 9.15 186.81 100 0.00 6.03 12.49 590.31 12.49 286.16 105 0.00 7.43 10.22 353.50 10.22 192.63 110 0.00 11.10 5.87 313.17 5.87 174.35 115 0.00 15.04 2.57 295.37 2.57 160.32 120 0.00 18.92 0.08 281.31 0.08 151.31 125 0.00 22.72 -1.91 270.60 -1.91 144.67 130 0.00 26.42 -3.55 262.09 -3.55 139.55 135 0.00 29.99 -4.93 255.16 -4.93 135.49 140 0.00 33.41 -6.10 249.44 -6.10 132.22 145 0.00 36.63 -7.10 244.68 -7.10 129.56 150 0.00 39.62 -7.95 240.59 -7.95 128.60 155 0.00 42.31 -8.66 237.32 -8.66 126.77 160 0.00 44.65 -9.24 234.70 -9.24 125.27 165 0.00 46.57 -9.70 232.67 -9.70 124.10 170 0.00 48.00 -10.00 231.37 -10.00 123.34 175 0.00 48.89 -10.00 231.37 -10.00 123.34 180 0.00 49.19 -10.00 231.37 -10.00 123.34 185 0.00 48.89 -10.00 231.37 -10.00 123.34 Frequency Coordination and Interference Analysis Report 06/15/2010 Page 8 of 10

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Coordination Values FORT BRAGG, NC Licensee Name Glacier Technologies, LLC Latitude (NAD 83) 35° 8' 21.3" N Longitude (NAD 83) 78° 58' 56.6" W Ground Elevation (AMSL) 80.47 m / 264.0 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model Vertex RSI 9.2 meter Antenna Mode Receive 11.0 GHz Transmit 14.0 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 -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 48.00 -10.00 231.37 -10.00 123.34 195 0.00 46.57 -9.70 232.67 -9.70 124.10 200 0.00 44.65 -9.24 234.70 -9.24 125.27 205 0.00 42.31 -8.66 237.32 -8.66 126.77 210 0.00 39.62 -7.95 240.58 -7.95 128.60 215 0.23 36.47 -7.05 242.11 -7.05 128.84 220 0.36 33.16 -6.02 234.13 -6.02 121.30 225 0.51 29.66 -4.80 226.16 -4.80 113.21 230 0.48 26.11 -3.42 234.76 -3.42 118.53 235 0.42 22.46 -1.78 249.13 -1.78 127.80 240 0.64 18.52 0.31 243.72 0.31 120.84 245 0.61 15.07 2.55 257.41 2.55 128.47 250 0.59 12.66 4.44 269.04 4.44 133.55 255 0.61 11.91 5.10 271.68 5.10 134.63 260 0.50 13.26 3.94 271.61 3.94 136.41 265 0.50 16.01 1.89 260.37 1.89 130.42 270 0.65 19.56 -0.28 240.45 -0.28 119.00 275 0.77 23.64 -2.34 224.06 -2.34 108.06 280 0.73 28.07 -4.21 217.25 -4.21 104.78 285 0.61 32.68 -5.86 215.85 -5.86 105.71 290 0.41 37.40 -7.32 222.83 -7.32 113.47 295 0.31 42.15 -8.62 227.13 -8.62 118.49 300 0.22 46.94 -9.79 230.06 -9.79 122.08 305 0.20 51.74 -10.00 231.15 -10.00 123.16 310 0.00 56.59 -10.00 231.37 -10.00 123.34 315 0.00 61.43 -10.00 231.37 -10.00 123.34 320 0.00 66.28 -10.00 231.37 -10.00 123.34 325 0.00 71.15 -10.00 231.37 -10.00 123.34 330 0.00 76.02 -10.00 231.37 -10.00 123.34 335 0.00 80.89 -10.00 231.37 -10.00 123.34 340 0.23 85.77 -10.00 228.84 -10.00 121.30 345 0.29 90.66 -10.00 223.02 -10.00 116.51 350 0.29 95.54 -10.00 223.02 -10.00 116.52 355 0.25 100.43 -10.00 226.22 -10.00 119.16 Frequency Coordination and Interference Analysis Report 06/15/2010 Page 9 of 10

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: June 15, 2010 Frequency Coordination and Interference Analysis Report 06/15/2010 Page 10 of 10


Document Created: 2010-06-15 11:13:58
Document Modified: 2010-06-15 11:13:58
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