Attachment Exhibit A

This document pretains to SES-LIC-20110930-01158 for License on a Satellite Earth Station filing.

IBFS_SESLIC2011093001158_918217

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for GCI Communication Corporation EAGLE, AK Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 September 19, 2011

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 07/15/2011 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 07/15/2011 Page 3 of 10

2. SUMMARY OF RESULTS There were no great circle interference cases which exceeded the interference objective on a line-of-sight basis identified during the interference study of the proposed earth station. No carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 07/15/2011 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. Company GCI Communication Corporation Frequency Coordination and Interference Analysis Report 07/15/2011 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 07/15/2011 Page 6 of 10

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 09/19/2011 Job Number: 110919COMSTC03 Administrative Information Licensee Name GCI Communication Corporation Site Information EAGLE, AK Venue Name Latitude (NAD 83) 64° 47' 5.0" N Longitude (NAD 83) 141° 12' 25.5" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 274.0 m / 899.0 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 91° W to 194° West Longitude Azimuth Range 127.0° to 235.5° Corresponding Elevation Angles 7.2° / 6.3° Antenna Centerline (AGL) 2.13 m / 7.0 ft Antenna Information Receive Transmit Manufacturer Patriot Patriot Model 380AZ 380AZ Gain / Diameter 42.3 dBi / 3.8 m 46.3 dBi / 3.8 m 3-dB / 15-dB Beamwidth 1.20° / 2.40° 0.60° / 1.20° 6K72G7W - 36M0G7W 6K72D7W - 36M0D7W Max Available RF Power (dBW/4 kHz) -2.7 -16.53 (dBW/MHz) -0.45 7.47 Maximum EIRP (dBW/4 kHz) 43.6 29.77 (dBW/MHz) 45.85 53.77 (dBW) 45.85 69.31 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) 6K72G7W - 36M0G7W / 3700.0 - 4200.0 6K72G7W - 36M0G7W / 5925.0 - 6425.0 6K72D7W - 36M0D7W / 3700.0 - 4200.0 6K72D7W - 36M0D7W / 5925.0 - 6425.0 Max Great Circle Coordination Distance 519.2 km / 322.6 mi 295.2 km / 183.4 mi Precipitation Scatter Contour Radius 593.6 km / 368.8 mi 100.6 km / 62.5 mi Frequency Coordination and Interference Analysis Report 07/15/2011 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 EAGLE VILLAG, AK Licensee Name GCI Communication Corporation Latitude (NAD 83) 64° 47' 5.0" N Longitude (NAD 83) 141° 12' 25.5" W Ground Elevation (AMSL) 274.0 m / 899.0 ft Antenna Centerline (AGL) 2.13 m / 7.0 ft 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 0.00 124.25 -10.00 285.28 -10.00 170.66 5 0.00 121.72 -10.00 285.28 -10.00 170.66 10 0.00 116.77 -10.00 285.28 -10.00 170.66 15 0.00 111.82 -10.00 285.28 -10.00 170.66 20 0.00 106.87 -10.00 285.28 -10.00 170.66 25 0.00 101.91 -10.00 285.28 -10.00 170.66 30 0.00 96.95 -10.00 285.28 -10.00 170.66 35 0.00 91.99 -10.00 285.28 -10.00 170.66 40 0.00 87.03 -10.00 285.28 -10.00 170.66 45 0.00 82.07 -10.00 285.28 -10.00 170.66 50 0.00 77.11 -10.00 285.28 -10.00 170.66 55 0.00 72.15 -10.00 285.28 -10.00 170.66 60 0.00 67.20 -10.00 285.28 -10.00 170.66 65 0.00 62.24 -10.00 285.28 -10.00 170.66 70 0.00 57.30 -10.00 285.28 -10.00 170.66 75 0.00 52.36 -10.00 285.28 -10.00 170.66 80 0.00 47.42 -9.90 285.92 -9.90 171.05 85 0.00 42.50 -8.71 293.62 -8.71 175.67 90 0.00 37.60 -7.38 302.50 -7.38 180.82 95 0.00 32.72 -5.87 313.54 -5.87 186.65 100 0.00 27.88 -4.13 325.90 -4.13 193.33 105 0.00 23.09 -2.09 340.85 -2.09 201.14 110 0.00 18.42 0.37 359.42 0.37 208.93 115 0.00 13.97 3.37 383.06 3.37 221.31 120 0.00 10.03 6.97 412.27 6.97 237.55 125 0.00 7.47 10.17 499.05 10.17 282.04 130 0.00 7.79 9.71 472.97 9.71 265.75 135 0.00 9.38 7.69 435.43 7.69 246.19 140 0.00 10.87 6.10 409.37 6.10 234.46 145 0.00 12.22 4.83 394.26 4.83 227.69 150 0.00 13.42 3.81 386.59 3.81 223.20 155 0.00 14.45 3.00 380.09 3.00 219.72 160 0.00 15.32 2.37 375.06 2.37 217.06 165 0.00 16.00 1.90 371.32 1.90 215.09 170 0.00 16.50 1.57 368.73 1.57 213.74 175 0.00 16.79 1.37 367.21 1.37 212.94 180 0.00 16.90 1.31 366.70 1.31 212.68 185 0.00 16.80 1.37 367.19 1.37 212.93 Frequency Coordination and Interference Analysis Report 07/15/2011 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 EAGLE VILLAG, AK Licensee Name GCI Communication Corporation Latitude (NAD 83) 64° 47' 5.0" N Longitude (NAD 83) 141° 12' 25.5" W Ground Elevation (AMSL) 274.0 m / 899.0 ft Antenna Centerline (AGL) 2.13 m / 7.0 ft 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 16.50 1.56 368.69 1.56 213.72 195 0.00 16.01 1.89 371.31 1.89 215.08 200 0.00 15.32 2.37 375.06 2.37 217.05 205 0.00 14.45 3.00 380.09 3.00 219.72 210 0.00 13.42 3.81 386.59 3.81 223.20 215 0.00 12.22 4.82 394.23 4.82 227.67 220 0.00 10.88 6.09 408.39 6.09 234.16 225 0.00 9.39 7.69 433.74 7.69 245.41 230 0.00 7.78 9.73 470.36 9.73 264.23 235 0.00 6.30 12.01 519.18 12.01 295.24 240 0.00 7.72 9.82 437.32 9.82 250.88 245 0.00 11.36 5.61 400.77 5.61 231.24 250 0.00 15.76 2.06 372.60 2.06 215.76 255 0.00 20.44 -0.76 350.81 -0.76 204.57 260 0.00 25.23 -3.05 333.76 -3.05 197.47 265 0.00 30.09 -4.96 319.96 -4.96 190.14 270 0.00 34.99 -6.60 307.85 -6.60 183.84 275 0.00 39.90 -8.03 298.15 -8.03 178.32 280 0.00 44.84 -9.29 289.83 -9.29 173.41 285 0.00 49.78 -10.00 285.28 -10.00 170.66 290 0.00 54.73 -10.00 285.28 -10.00 170.66 295 0.00 59.69 -10.00 285.28 -10.00 170.66 300 0.00 64.65 -10.00 285.28 -10.00 170.66 305 0.00 69.62 -10.00 285.28 -10.00 170.66 310 0.00 74.58 -10.00 285.28 -10.00 170.66 315 0.00 79.55 -10.00 285.28 -10.00 170.66 320 0.00 84.52 -10.00 285.28 -10.00 170.66 325 0.00 89.49 -10.00 285.28 -10.00 170.66 330 0.00 94.46 -10.00 285.28 -10.00 170.66 335 0.00 99.43 -10.00 285.28 -10.00 170.66 340 0.00 104.40 -10.00 285.28 -10.00 170.66 345 0.00 109.37 -10.00 285.28 -10.00 170.66 350 0.00 114.33 -10.00 285.28 -10.00 170.66 355 0.00 119.29 -10.00 285.28 -10.00 170.66 Frequency Coordination and Interference Analysis Report 07/15/2011 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. Timothy O. Crutcher Frequency Planner COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 DATED: September 19 2011 Frequency Coordination and Interference Analysis Report 07/15/2011 Page 10 of 10


Document Created: 2011-09-20 17:25:06
Document Modified: 2011-09-20 17:25:06
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