Attachment Coordination Report

This document pretains to SES-REG-20160512-00413 for Earth Station Registration on a Satellite Earth Station filing.

IBFS_SESREG2016051200413_1135907

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for Wrangell Radio Group WRANGELL, AK Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 May 12, 2016

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 05/12/2016 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 05/12/2016 Page 3 of 10

2. SUMMARY OF RESULTS No great circle interference cases were identified during the interference study of the proposed earth station. Frequency Coordination and Interference Analysis Report 05/12/2016 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 03/22/2016. Company Comsearch Frequency Coordination and Interference Analysis Report 05/12/2016 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 05/12/2016 Page 6 of 10

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 05/12/2016 Job Number: 160322COMSGE04 Administrative Information Status ENGINEER PROPOSAL Call Sign Licensee Code ZWRRAD Licensee Name Wrangell Radio Group Site Information WRANGELL, AK Venue Name Latitude (NAD 83) 56° 28' 17.7" N Longitude (NAD 83) 132° 22' 46.8" W Climate Zone A Rain Zone 3 Ground Elevation (AMSL) 22.3 m / 73.2 ft Link Information Satellite Type Geostationary Mode RO - Receive-Only Modulation Digital Satellite Arc 68° W to 143° West Longitude Azimuth Range 111.8° to 192.7° Corresponding Elevation Angles 5.2° / 25.0° Antenna Centerline (AGL) 2.74 m / 9.0 ft Antenna Information Receive - FCC32 Manufacturer Prodelin Model 1383 Gain / Diameter 41.2 dBi / 3.8 m 3-dB / 15-dB Beamwidth 1.40° / 2.40° Interference Objectives: Long Term -156.0 dBW/MHz 20% Short Term -146.0 dBW/MHz 0.01% Frequency Information Receive 4.0 GHz Emission / Frequency Range (MHz) 30K0F1D - 10M3G7W / 3700.0 - 4200.0 Max Great Circle Coordination Distance 548.6 km / 340.8 mi Precipitation Scatter Contour Radius 431.5 km / 268.1 mi Frequency Coordination and Interference Analysis Report 05/12/2016 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 WRANGELL, AK Licensee Name Wrangell Radio Group Latitude (NAD 83) 56° 28' 17.7" N Longitude (NAD 83) 132° 22' 46.8" W Ground Elevation (AMSL) 22.3 m / 73.2 ft Antenna Centerline (AGL) 2.74 m / 9.0 ft Antenna Model Prodelin 3.8 meter Antenna Mode Receive 4.0 GHz Interference Objectives: Long Term -156.0 dBW/MHz 20% Short Term -146.0 dBW/MHz 0.01% Receive 4.0 GHz Horizon Antenna Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) 0 3.14 111.78 -10.00 166.31 5 3.14 106.78 -10.00 166.31 10 3.10 101.78 -10.00 169.00 15 3.10 96.79 -10.00 169.01 20 4.64 91.79 -10.00 138.41 25 7.00 86.79 -10.00 114.33 30 5.81 81.79 -10.00 127.08 35 5.03 76.79 -10.00 134.56 40 3.70 71.80 -10.00 154.06 45 3.36 66.80 -10.00 161.35 50 2.16 61.83 -10.00 190.92 55 1.86 56.85 -10.00 198.40 60 1.73 51.87 -10.00 201.95 65 1.04 46.93 -9.79 220.11 70 0.79 41.98 -8.58 239.51 75 0.20 37.08 -7.23 302.99 80 0.56 32.09 -5.66 272.49 85 3.39 26.85 -3.72 194.67 90 5.32 21.79 -1.46 173.48 95 7.29 16.92 1.29 161.38 100 8.20 12.17 4.86 173.52 105 7.84 7.30 10.42 208.96 110 8.40 3.70 17.78 548.57 115 7.08 0.39 41.20 514.87 120 9.45 0.27 41.20 466.39 125 11.04 1.15 30.51 330.02 130 10.00 4.24 16.30 222.63 135 11.00 5.37 13.75 200.74 140 11.08 7.12 10.69 181.68 145 11.13 8.78 8.41 165.19 150 10.10 11.25 5.72 156.62 155 9.83 12.81 4.31 150.67 160 9.14 14.57 2.92 149.58 165 7.11 17.44 0.96 161.86 170 3.22 21.94 -1.53 206.76 175 1.76 23.80 -2.42 238.03 180 0.35 25.34 -3.10 313.07 185 0.00 25.56 -3.19 332.75 Frequency Coordination and Interference Analysis Report 05/12/2016 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 WRANGELL, AK Licensee Name Wrangell Radio Group Latitude (NAD 83) 56° 28' 17.7" N Longitude (NAD 83) 132° 22' 46.8" W Ground Elevation (AMSL) 22.3 m / 73.2 ft Antenna Centerline (AGL) 2.74 m / 9.0 ft Antenna Model Prodelin 3.8 meter Antenna Mode Receive 4.0 GHz Interference Objectives: Long Term -156.0 dBW/MHz 20% Short Term -146.0 dBW/MHz 0.01% Receive 4.0 GHz Horizon Antenna Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) 190 0.00 25.14 -3.01 334.06 195 1.64 23.47 -2.26 242.77 200 2.80 23.32 -2.19 212.27 205 3.37 24.75 -2.84 199.66 210 2.08 28.45 -4.35 217.31 215 2.02 31.61 -5.50 212.92 220 2.60 34.78 -6.53 197.69 225 1.89 39.00 -7.78 205.30 230 1.63 43.12 -8.87 207.14 235 0.64 47.66 -9.95 240.94 240 0.00 52.10 -10.00 285.28 245 0.00 56.37 -10.00 285.28 250 0.00 60.71 -10.00 285.28 255 0.00 65.11 -10.00 285.28 260 0.00 69.55 -10.00 285.28 265 0.00 74.03 -10.00 285.28 270 0.00 78.53 -10.00 285.28 275 0.00 83.05 -10.00 285.28 280 0.00 87.58 -10.00 285.28 285 0.00 92.11 -10.00 285.28 290 0.00 96.64 -10.00 285.28 295 0.23 101.18 -10.00 282.11 300 0.00 105.66 -10.00 285.28 305 0.25 110.18 -10.00 278.95 310 1.16 114.83 -10.00 215.36 315 2.78 119.67 -10.00 176.64 320 5.94 124.97 -10.00 125.82 325 6.45 129.67 -10.00 120.28 330 5.23 133.78 -10.00 132.66 335 4.15 136.78 -10.00 145.55 340 3.82 131.78 -10.00 151.51 345 3.62 126.78 -10.00 155.75 350 3.25 121.77 -10.00 163.78 355 3.25 116.78 -10.00 163.79 Frequency Coordination and Interference Analysis Report 05/12/2016 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: May 12, 2016 Frequency Coordination and Interference Analysis Report 05/12/2016 Page 10 of 10


Document Created: 2016-05-12 13:51:43
Document Modified: 2016-05-12 13:51:43
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