Attachment Coordination Report

This document pretains to SES-LIC-20111027-01267 for License on a Satellite Earth Station filing.

IBFS_SESLIC2011102701267_922900

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for ViaSat, Inc DULUTH, GA Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 October 24, 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 10/24/2011 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 shared terrestrial microwave environment. Further, there will be no restrictions of its operation due to interference considerations. Frequency Coordination and Interference Analysis Report 10/24/2011 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. When considering the path loss toward these predicted cases and the limited transmit frequency of the proposed uplink at 2085.6875 MHz, the losses were found to be sufficient to reduce the signal levels to acceptable magnitudes in every case. Frequency Coordination and Interference Analysis Report 10/24/2011 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 09/14/2011. Company CNN America, Inc. Fox24 of Macon License LLC Georgia Television Company MEDIA GENERAL COMMUNICATIONS HOLDINGS, L MEREDITH CORPORATION - WGCL-TV NVT Birmingham Licensee, LLC New Age Media of Tennessee License, LLC New World Communications of Atlanta, Inc PAPPAS TELECASTING OF OPELIKA Pacific and Southern Company, Inc. SARKES TARZIAN INC TV ALABAMA, INC. - WCFT-TV UNIVERSITY OF GEORGIA WAFF License Subsidiary, LLC WBRC License Subsidiary, LLC WDEF-TV, Inc. WTVM License Subsidiary, LLC Ying Hua Benns SBE Coordinator - Georgia Northern Region (1 GHz Up) 3G Wireless, LLC Borgeson, Tom R Broadcast Sports Corp Broadcast Sports Enterprises Inc. Casper, John Citywide News Network, Inc. Cohen, Elana CP Communications PA, LLC Cowboys Stadium LP DCI II Inc. FISHMAN BROTHERS ENTERPRISES GOODYEAR TIRE AND RUBBER COMPANY Global Microwave Systems Inc. Heiden Mr, William Information Super Station LLC NSM Surveillance Onboard Images Production & Satellite Services, Inc. Randy Hermes Production dba Aerial Video Sys. Regulus Media Services, Inc. REMOTE FACILITIES CONSULTING SERVICES Frequency Coordination and Interference Analysis Report 10/24/2011 Page 5 of 11

RF Film, Inc RF Technology, LLC Total RF Marketing Inc Universal Satellite Communications Inc. Village Video Productions Inc WOLFE AIR AVIATION Western Technical Services Wexler Video, Inc. Winged Vision Inc Frequency Coordination and Interference Analysis Report 10/24/2011 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 10/24/2011 Page 7 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 10/24/2011 Job Number: 110914COMSGE01 Administrative Information Status ENGINEER PROPOSAL Call Sign Licensee Code ZVIASA Licensee Name ViaSat, Inc Site Information DULUTH, GA Venue Name Latitude (NAD 83) 33° 57' 47.2" N Longitude (NAD 83) 84° 5' 43.0" W Climate Zone A Rain Zone 1 Ground Elevation (AMSL) 286.21 m / 939.0 ft Link Information Satellite Type Low Earth Orbit Mode TO - Transmit-Only Modulation Digital Minimum Elevation Angle 5.0° Azimuth Range 0.0° to 360° Antenna Centerline (AGL) 3.66 m / 12.0 ft Antenna Information Transmit - FCC32 Manufacturer ViaSat Model 7.3 Meter Gain / Diameter 40.7 dBi / 7.3 m 3-dB / 15-dB Beamwidth 1.40° / 2.80° Max Available RF Power (dBW/4 kHz) -2.8 (dBW/MHz) 21.2 Maximum EIRP (dBW/4 kHz) 37.9 (dBW/MHz) 61.9 Interference Objectives: Long Term -154.0 dBW/4 kHz 20% Short Term -131.0 dBW/4 kHz 0.0025% Frequency Information Transmit 2.0 GHz Emission / Frequency Range (MHz) 128KG1D / 2085.6875 Max Great Circle Coordination Distance 180.7 km / 112.3 mi Precipitation Scatter Contour Radius 130.9 km / 81.3 mi Frequency Coordination and Interference Analysis Report 10/24/2011 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 DULUTH, GA Licensee Name ViaSat, Inc Latitude (NAD 83) 33° 57' 47.2" N Longitude (NAD 83) 84° 5' 43.0" W Ground Elevation (AMSL) 286.21 m / 939.0 ft Antenna Centerline (AGL) 3.66 m / 12.0 ft Antenna Model ViaSat 7.3 Meter Antenna Mode Transmit 2.0 GHz Interference Objectives: Long Term -154.0 dBW/4 kHz 20% Short Term -131.0 dBW/4 kHz 0.0025% Max Available RF Power -2.8 (dBW/4 kHz) Transmit 2.0 GHz Horizon Antenna Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) 0 0.00 93.30 7.00 180.70 5 0.00 88.31 7.00 180.70 10 0.00 83.32 7.00 180.70 15 0.00 78.33 7.00 180.70 20 0.00 73.35 7.00 180.70 25 0.00 68.36 7.00 180.70 30 0.00 63.37 7.00 180.70 35 0.00 58.39 7.00 180.70 40 0.00 53.40 7.00 180.70 45 0.00 48.42 7.00 180.70 50 0.00 43.44 7.00 180.70 55 0.00 38.47 7.00 180.70 60 0.00 33.50 7.00 180.70 65 0.00 28.54 7.00 180.70 70 0.00 23.60 7.00 180.70 75 0.00 18.68 7.00 180.70 80 0.00 13.83 7.00 180.70 85 0.00 9.13 7.00 180.70 90 0.00 5.03 7.00 180.70 95 0.00 4.15 7.00 180.70 100 0.00 7.68 7.00 180.70 105 0.00 12.28 7.00 180.70 110 0.00 17.10 7.00 180.70 115 0.00 22.00 7.00 180.70 120 0.00 26.94 7.00 180.70 125 0.00 31.89 7.00 180.70 130 0.00 36.86 7.00 180.70 135 0.00 41.83 7.00 180.70 140 0.00 46.81 7.00 180.70 145 0.00 51.79 7.00 180.70 150 0.00 56.77 7.00 180.70 155 0.00 61.76 7.00 180.70 160 0.00 66.74 7.00 180.70 165 0.00 71.73 7.00 180.70 170 0.00 76.72 7.00 180.70 175 0.00 81.71 7.00 180.70 180 0.00 86.70 7.00 180.70 185 0.00 91.69 7.00 180.70 Frequency Coordination and Interference Analysis Report 10/24/2011 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 DULUTH, GA Licensee Name ViaSat, Inc Latitude (NAD 83) 33° 57' 47.2" N Longitude (NAD 83) 84° 5' 43.0" W Ground Elevation (AMSL) 286.21 m / 939.0 ft Antenna Centerline (AGL) 3.66 m / 12.0 ft Antenna Model ViaSat 7.3 Meter Antenna Mode Transmit 2.0 GHz Interference Objectives: Long Term -154.0 dBW/4 kHz 20% Short Term -131.0 dBW/4 kHz 0.0025% Max Available RF Power -2.8 (dBW/4 kHz) Transmit 2.0 GHz Horizon Antenna Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) 190 0.00 96.68 7.00 180.70 195 0.00 101.67 7.00 180.70 200 0.00 106.65 7.00 180.70 205 0.00 111.64 7.00 180.70 210 0.00 116.63 7.00 180.70 215 0.00 121.61 7.00 180.70 220 0.00 126.60 7.00 180.70 225 0.00 131.58 7.00 180.70 230 0.00 136.56 7.00 180.70 235 0.00 141.53 7.00 180.70 240 0.00 146.50 7.00 180.70 245 0.00 151.46 7.00 180.70 250 0.00 156.40 7.00 180.70 255 0.00 161.32 7.00 180.70 260 0.00 166.17 7.00 180.70 265 0.00 170.87 7.00 180.70 270 0.00 174.97 7.00 180.70 275 0.00 175.85 7.00 180.70 280 0.00 172.32 7.00 180.70 285 0.00 167.72 7.00 180.70 290 0.00 162.90 7.00 180.70 295 0.00 158.00 7.00 180.70 300 0.00 153.06 7.00 180.70 305 0.00 148.11 7.00 180.70 310 0.00 143.14 7.00 180.70 315 0.00 138.17 7.00 180.70 320 0.00 133.19 7.00 180.70 325 0.00 128.21 7.00 180.70 330 0.00 123.23 7.00 180.70 335 0.00 118.24 7.00 180.70 340 0.00 113.26 7.00 180.70 345 0.00 108.27 7.00 180.70 350 0.00 103.28 7.00 180.70 355 0.00 98.29 7.00 180.70 Frequency Coordination and Interference Analysis Report 10/24/2011 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: October 24, 2011 Frequency Coordination and Interference Analysis Report 10/24/2011 Page 11 of 11


Document Created: 2011-10-24 10:06:03
Document Modified: 2011-10-24 10:06:03
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