Attachment Coordination report

This document pretains to SES-MOD-20170817-00922 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2017081700922_1262668

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for University of Oklahoma NORMAN, OK Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 July 28, 2017

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 07/28/2017 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 07/28/2017 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 07/28/2017 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 07/13/2017. Company RAYTHEON COMPANY Frequency Coordination and Interference Analysis Report 07/28/2017 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 07/28/2017 Page 6 of 10

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 07/28/2017 Job Number: 170713COMSGE01 Administrative Information Status ENGINEER PROPOSAL Call Sign E5589 Licensee Code S12760 Licensee Name University of Oklahoma Site Information NORMAN, OK Venue Name Latitude (NAD 83) 35° 12' 17.0" N Longitude (NAD 83) 97° 26' 48.0" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 354.92 m / 1164.4 ft Link Information Satellite Type Geostationary Mode RO - Receive-Only Modulation Digital Satellite Arc 60° W to 143° West Longitude Azimuth Range 127.0° to 240.5° Corresponding Elevation Angles 33.2° / 27.2° Antenna Centerline (AGL) 11.58 m / 38.0 ft Antenna Information Receive - FCC29 Manufacturer Comtech Model 3.8 meter Gain / Diameter 41.7 dBi / 3.8 m 3-dB / 15-dB Beamwidth 1.50° / 2.60° 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 327.9 km / 203.7 mi Precipitation Scatter Contour Radius 492.5 km / 306.0 mi Frequency Coordination and Interference Analysis Report 07/28/2017 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 NORMAN, OK Licensee Name University of Oklahoma Latitude (NAD 83) 35° 12' 17.0" N Longitude (NAD 83) 97° 26' 48.0" W Ground Elevation (AMSL) 354.92 m / 1164.4 ft Antenna Centerline (AGL) 11.58 m / 38.0 ft Antenna Model Comtech 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 0.00 115.97 -10.00 285.28 5 0.00 116.31 -10.00 285.28 10 0.00 112.31 -10.00 285.28 15 0.00 108.25 -10.00 285.28 20 0.00 104.14 -10.00 285.28 25 0.00 100.00 -10.00 285.28 30 0.00 95.83 -10.00 285.28 35 0.00 91.65 -10.00 285.28 40 0.00 87.47 -10.00 285.28 45 0.00 83.29 -10.00 285.28 50 0.00 79.12 -10.00 285.28 55 0.00 74.99 -10.00 285.28 60 0.00 70.89 -10.00 285.28 65 0.00 66.84 -10.00 285.28 70 0.00 62.86 -10.00 285.28 75 0.00 58.96 -10.00 285.28 80 0.00 55.17 -10.00 285.28 85 0.00 51.52 -10.00 285.28 90 0.00 48.03 -10.00 285.28 95 0.00 44.76 -9.27 289.95 100 0.00 41.76 -8.52 294.88 105 0.00 39.08 -7.80 299.66 110 0.00 36.82 -7.15 304.05 115 0.00 35.03 -6.61 307.75 120 0.00 33.82 -6.23 310.41 125 0.00 33.22 -6.04 311.74 130 0.00 33.29 -6.06 311.58 135 0.00 34.02 -6.29 309.95 140 0.00 35.36 -6.71 307.04 145 0.00 37.26 -7.28 303.17 150 0.00 39.62 -7.95 298.68 155 0.00 42.25 -8.65 294.04 160 0.00 44.58 -9.23 290.23 165 0.00 46.50 -9.69 287.28 170 0.00 47.93 -10.00 285.28 175 0.00 48.82 -10.00 285.28 180 0.00 49.12 -10.00 285.28 185 0.00 48.82 -10.00 285.28 Frequency Coordination and Interference Analysis Report 07/28/2017 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 NORMAN, OK Licensee Name University of Oklahoma Latitude (NAD 83) 35° 12' 17.0" N Longitude (NAD 83) 97° 26' 48.0" W Ground Elevation (AMSL) 354.92 m / 1164.4 ft Antenna Centerline (AGL) 11.58 m / 38.0 ft Antenna Model Comtech 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 47.93 -10.00 285.28 195 0.00 46.50 -9.69 287.28 200 0.00 44.58 -9.23 290.23 205 0.00 42.25 -8.65 294.04 210 0.00 39.56 -7.93 298.78 215 0.00 36.58 -7.08 304.52 220 0.00 33.56 -6.15 310.97 225 0.00 30.99 -5.28 317.69 230 0.00 28.99 -4.56 322.85 235 0.00 27.68 -4.05 326.45 240 0.00 27.17 -3.85 327.90 245 0.00 27.51 -3.99 326.94 250 0.00 28.66 -4.43 323.74 255 0.00 30.53 -5.12 318.84 260 0.00 33.00 -5.96 312.89 265 0.00 35.94 -6.89 305.84 270 0.00 39.25 -7.85 299.35 275 0.00 42.84 -8.80 293.06 280 0.00 46.64 -9.72 287.07 285 0.00 50.60 -10.00 285.28 290 0.00 54.70 -10.00 285.28 295 0.00 58.88 -10.00 285.28 300 0.00 63.15 -10.00 285.28 305 0.00 67.47 -10.00 285.28 310 0.00 71.84 -10.00 285.28 315 0.00 76.24 -10.00 285.28 320 0.00 80.66 -10.00 285.28 325 0.00 85.10 -10.00 285.28 330 0.00 89.55 -10.00 285.28 335 0.00 93.99 -10.00 285.28 340 0.00 98.43 -10.00 285.28 345 0.00 102.86 -10.00 285.28 350 0.00 107.27 -10.00 285.28 355 0.00 111.64 -10.00 285.28 Frequency Coordination and Interference Analysis Report 07/28/2017 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: July 28, 2017 Frequency Coordination and Interference Analysis Report 07/28/2017 Page 10 of 10


Document Created: 2017-07-28 11:12:12
Document Modified: 2017-07-28 11:12:12
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