Attachment FreqCoord

This document pretains to SES-MOD-20110720-00843 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2011072000843_906644

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for Allen Holdings, Inc MARCH AFB, CA Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 July 15, 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 was no great circle interference cases were 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.An information only coordination data for this earth station was sent to the below listed carriers with a letter dated 07/15/2011. Company ANAHEIM CITY, COMMUNICATIONS DIVISION AT&T California AirSites2000, LLC BNSF Railway Company CNG Communications, Inc. COAST COMMUNITY COLLEGE DISTRICT California, State of Cellco Partnership - California Coachella Valley Water District Cox Communications - San Diego Mkt FALCON CABLEVISION, A CALIFORNIA L.P. KTLA INC LOS ANGELES CITY WATER & POWER LOS ANGELES UNIFIED SCHOOL DISTRICT Los Angeles City Info Technology Agency Los Angeles County Dept of Public Works Los Angeles County FCC Licensing Section Los Angeles SMSA Ltd. Partnership METROPOLITAN AREA NETWORKS, INC. MONTEBELLO CITY CALIFORNIA Metropolitan Water Dist of So California NEXTEL OF CALIFORNIA INC New Cingular Wireless PCS - Los Angeles New Cingular Wireless PCS LLC -San Diego Nextweb Inc ORANGE, COUNTY OF, CA QUALCOMM INC. Regional 3Cs Riverside, County of SAN DIEGO COUNTY SAN DIEGO, CITY OF SKYRIVER COMMUNICATIONS INC SOUTHERN CALIFORNIA REGIONAL RAIL AUTH. San Bernardino County of California San Diego Gas & Electric Company Southern California Edison Company Southern California Gas Company T-Mobile License LLC TV MICROWAVES CO Turn Wireless, LLC University of California,HPWREN Verizon California Inc. Verizon Wireless (VAW) LLC (CA) Western Pacific Mobile Microwave Western Technical Services 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: 07/15/2011 Job Number: 110715COMSTC11 Administrative Information Call Sign E000232 Licensee Name Allen Holdings, Inc Site Information MARCH AFB, CA Venue Name Latitude (NAD 83) 33° 54' 21.7" N Longitude (NAD 83) 117° 14' 57.8" W Climate Zone A Rain Zone 4 Ground Elevation (AMSL) 468.5 m / 1537.1 ft Link Information Satellite Type Geostationary Mode TO - Transmit-Only Modulation Digital Satellite Arc 177° W to 177° West Longitude Azimuth Range 252.0° to 252.0° Corresponding Elevation Angles 16.4° / 16.4° Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Information Transmit - V61103 Manufacturer VERTEX COMMUNICATIONS Model 11 KPC Gain / Diameter 55.4 dBi / 11.0 m 3-dB / 15-dB Beamwidth 0.30° / 0.60° 1M23G7W - 9M00G7W Max Available RF Power (dBW/4 kHz) -14.7 -14.7 (dBW/MHz) 9.3 9.3 Maximum EIRP (dBW/4 kHz) 40.7 40.7 (dBW/MHz) 64.7 64.7 (dBW) 65.6 74.22 Interference Objectives: Long Term -154.0 dBW/4 kHz 20% Short Term -131.0 dBW/4 kHz 0.0025% Frequency Information Transmit 6.1 GHz Emission / Frequency Range (MHz) 1M23G7W - 9M00G7W / 5850.0 - 5925.0 Max Great Circle Coordination Distance 137.8 km / 85.6 mi Precipitation Scatter Contour Radius 100.0 km / 62.1 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 MARCH AFB, CA Licensee Name Allen Holdings, Inc Latitude (NAD 83) 33° 54' 21.7" N Longitude (NAD 83) 117° 14' 57.8" W Ground Elevation (AMSL) 468.5 m / 1537.1 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model VERTEX COMMUNICATIONS 11 KPC Antenna Mode Transmit 6.1 GHz Interference Objectives: Long Term -154.0 dBW/4 kHz 20% Short Term -131.0 dBW/4 kHz 0.0025% Max Available RF Power -14.7 (dBW/4 kHz) Transmit 6.1 GHz Horizon Antenna Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) 0 0.85 107.34 -9.60 100.00 5 1.82 112.24 -10.95 100.00 10 0.93 116.93 -12.60 100.00 15 1.14 121.72 -12.60 100.00 20 2.69 126.76 -12.60 100.00 25 3.05 131.60 -12.60 100.00 30 2.37 136.16 -12.60 100.00 35 1.92 140.68 -12.60 100.00 40 1.90 145.22 -12.60 100.00 45 1.48 149.46 -12.60 100.00 50 0.88 153.33 -12.60 100.00 55 0.62 157.00 -12.60 100.00 60 0.54 160.24 -12.60 100.00 65 0.80 162.97 -12.60 100.00 70 0.92 164.43 -12.60 100.00 75 0.54 163.89 -12.60 100.00 80 0.00 161.82 -12.60 124.08 85 0.00 159.19 -12.60 124.08 90 0.00 155.84 -12.60 124.08 95 0.50 152.28 -12.60 100.19 100 0.78 148.24 -12.60 100.00 105 0.62 143.80 -12.60 100.00 110 1.07 139.45 -12.60 100.00 115 1.87 135.06 -12.60 100.00 120 2.38 130.47 -12.60 100.00 125 2.52 125.73 -12.60 100.00 130 1.78 120.83 -12.60 100.00 135 0.78 115.91 -12.60 100.00 140 0.00 111.04 -10.23 130.36 145 0.00 106.27 -9.60 132.04 150 0.00 101.49 -9.60 132.04 155 0.00 96.69 -9.60 132.04 160 0.00 91.90 -10.22 130.38 165 0.00 87.10 -10.60 129.36 170 0.00 82.30 -11.14 127.93 175 0.00 77.51 -12.10 125.40 180 0.00 72.73 -12.60 124.08 185 0.00 67.96 -12.60 124.08 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 MARCH AFB, CA Licensee Name Allen Holdings, Inc Latitude (NAD 83) 33° 54' 21.7" N Longitude (NAD 83) 117° 14' 57.8" W Ground Elevation (AMSL) 468.5 m / 1537.1 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model VERTEX COMMUNICATIONS 11 KPC Antenna Mode Transmit 6.1 GHz Interference Objectives: Long Term -154.0 dBW/4 kHz 20% Short Term -131.0 dBW/4 kHz 0.0025% Max Available RF Power -14.7 (dBW/4 kHz) Transmit 6.1 GHz Horizon Antenna Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) 190 0.00 63.21 -12.60 124.08 195 0.27 58.43 -12.60 118.56 200 0.55 53.66 -12.06 100.00 205 0.48 48.99 -10.20 107.82 210 0.43 44.37 -8.47 116.33 215 0.55 39.77 -7.51 111.10 220 0.56 35.30 -5.72 115.65 225 0.54 30.98 -4.80 119.12 230 0.49 26.88 -3.35 125.32 235 0.51 23.08 -1.45 129.93 240 0.54 19.76 0.54 133.13 245 0.59 17.22 2.07 135.06 250 0.65 15.84 2.90 134.75 255 0.74 15.91 2.85 131.65 260 0.78 17.49 1.91 127.04 265 0.72 20.26 0.25 125.07 270 0.72 23.70 -1.82 118.99 275 0.53 27.70 -3.68 122.61 280 0.32 31.97 -4.99 133.63 285 0.23 36.35 -6.14 137.80 290 0.00 40.90 -7.78 135.75 295 0.00 45.46 -8.78 134.24 300 0.00 50.08 -10.63 129.28 305 0.20 54.71 -12.48 124.23 310 0.00 59.46 -12.60 124.08 315 0.00 64.20 -12.60 124.08 320 0.22 68.93 -12.60 122.28 325 0.61 73.68 -12.60 100.00 330 2.95 78.35 -11.93 100.00 335 3.92 83.19 -10.96 100.00 340 2.72 88.08 -10.60 100.00 345 1.57 92.92 -10.02 100.00 350 0.62 97.72 -9.60 102.57 355 0.57 102.52 -9.60 104.82 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: July 15, 2011 Frequency Coordination and Interference Analysis Report 07/15/2011 Page 10 of 10


Document Created: 2011-07-18 17:47:57
Document Modified: 2011-07-18 17:47:57
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