Attachment Exhibit A

This document pretains to SES-MOD-20140811-00647 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2014081100647_1056816

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for Brigham Young University Provo, Utah (Call Sign: E110056) Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, Virginia 20147 August 8, 2014

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 08/08/2014 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, based upon the restrictions noted in the Summary of Results (Section 2). Frequency Coordination and Interference Analysis Report 08/08/2014 Page 3 of 10

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. The losses were found to be sufficient to reduce the signal levels to acceptable magnitudes in most cases. The following companies reported potential great circle interference conflicts that did not meet the objectives on a line-of-sight basis. When over-the-horizon losses and frequency separation are considered on the interfering paths, sufficient losses exist to negate harmful interference from occurring with the proposed transmit-receive earth station. Further, the transmit spectrum will be limited to frequencies 5925.0 to 6107.0 MHz, 6141.0 to 6270.0 MHz, 6303.0 to 6359.0 MHz, and 6392.0 to 6425.0 MHz. Company None No carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 08/08/2014 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. Expedited coordination data for this earth station was sent to the below listed carriers with a letter dated June 25, 2014. A minor revision was forwarded for the earth station on August 2, 2014. Company AT&T Mobility Wireless Operations Hldgs All West Communications, Inc. Beehive Telephone Company, Inc. Bonneville International Corporation Brigham Young University Carbon County Cellular, Inc. Financial Corporation Citizens Telecommunications Co of Utah Deseret Generation and Transmission Coop Emery County Sheriff's Office Great Basin Electronics, Inc. Intermountain Health Care New Cingular Wireless PCS LLC-Utah Nextel License Holdings 4 Inc. PacifiCorp Questar Infocomm, Inc. Qwest Corporation SALT LAKE COUNTY OF Sprint Spectrum L.P. T-MOBILE LIC LLC - VOICESTREAM PCS BTA I T-Mobile License LLC TOOELE COUNTY DEPT OF EMERGENCY MGMT UTAH, COUNTY OF Union Pacific Railroad Company Union Telephone Company, Inc. Utah Communications Agency Network Utah Transit Authority, State of Utah Utah, State of Verizon Wireless (VAW) LLC - (UTAH) Wasatch Utah RSA No. 2 Ltd Partnership Frequency Coordination and Interference Analysis Report 08/08/2014 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 08/08/2014 Page 6 of 10

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 08/08/2014 Job Number: 140802COMSJC01 Administrative Information Status ENGINEER PROPOSAL Call Sign E110056 Licensee Code BYUBRD Licensee Name Brigham Young University Site Information PROVO, UTAH Venue Name Latitude (NAD 83) 40° 15' 16.9" N Longitude (NAD 83) 111° 38' 52.3" W Climate Zone A Rain Zone 5 Ground Elevation (AMSL) 1433.78 m / 4704.0 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 90° W to 92° West Longitude Azimuth Range 148.4° to 151.1° Corresponding Elevation Angles 38.4° / 39.2° Antenna Centerline (AGL) 21.34 m / 70.0 ft Antenna Information Receive Transmit Manufacturer ASC Signal ASC Signal Model 4.5 Meter 4.5 Meter Gain / Diameter 43.8 dBi / 4.5 m 46.6 dBi / 4.5 m 3-dB / 15-dB Beamwidth 1.10° / 2.10° 0.80° / 1.50° 5M06G7W to 30M0G7W Max Available RF Power (dBW/4 kHz) -16.3 -16.3 (dBW/MHz) 7.7 7.7 Maximum EIRP (dBW/4 kHz) 30.3 30.3 (dBW/MHz) 54.3 54.3 (dBW) 61.3 69.05 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) 5M06G7W - 30M0G7W / 3700.0 - 4200.0 5M06G7W - 30M0G7W / 5925.0 - 6107.0 5M06G7W - 30M0G7W / 6141.0 - 6270.0 5M06G7W - 30M0G7W / 6303.0 - 6359.0 5M06G7W - 30M0G7W / 6392.0 - 6425.0 Max Great Circle Coordination Distance 298.3 km / 185.3 mi 132.0 km / 82.0 mi Precipitation Scatter Contour Radius 383.4 km / 238.2 mi 100.0 km / 62.1 mi Frequency Coordination and Interference Analysis Report 08/08/2014 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 PROVO, UT Licensee Name Brigham Young University Latitude (NAD 83) 40° 15' 16.9" N Longitude (NAD 83) 111° 38' 52.3" W Ground Elevation (AMSL) 1433.78 m / 4704.0 ft Antenna Centerline (AGL) 21.34 m / 70.0 ft Antenna Model ASC Signal 4.5 Meter 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 -16.3 (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 1.87 133.23 -10.00 198.17 -10.00 100.00 5 2.54 130.64 -10.00 182.12 -10.00 100.00 10 3.54 127.90 -10.00 157.39 -10.00 100.00 15 4.52 124.82 -10.00 140.13 -10.00 100.00 20 6.00 121.67 -10.00 125.27 -10.00 100.00 25 6.97 118.06 -10.00 114.62 -10.00 100.00 30 8.78 114.47 -10.00 100.00 -10.00 100.00 35 11.07 110.70 -10.00 100.00 -10.00 100.00 40 13.15 106.63 -10.00 100.00 -10.00 100.00 45 13.71 102.20 -10.00 100.00 -10.00 100.00 50 14.85 97.74 -10.00 100.00 -10.00 100.00 55 15.98 93.18 -10.00 100.00 -10.00 100.00 60 13.57 88.59 -10.00 100.00 -10.00 100.00 65 12.22 84.12 -10.00 100.00 -10.00 100.00 70 11.75 79.68 -10.00 100.00 -10.00 100.00 75 13.01 75.08 -10.00 100.00 -10.00 100.00 80 17.70 69.89 -10.00 100.00 -10.00 100.00 85 18.61 65.12 -10.00 100.00 -10.00 100.00 90 19.82 60.26 -10.00 100.00 -10.00 100.00 95 19.04 55.80 -10.00 100.00 -10.00 100.00 100 17.22 51.78 -10.00 100.00 -10.00 100.00 105 15.18 48.14 -10.00 100.00 -10.00 100.00 110 15.27 43.91 -9.06 100.00 -9.06 100.00 115 15.72 39.64 -7.95 100.00 -7.95 100.00 120 14.38 36.55 -7.07 100.00 -7.07 100.00 125 12.93 34.06 -6.30 100.00 -6.30 100.00 130 11.90 31.88 -5.59 100.00 -5.59 100.00 135 10.33 30.86 -5.24 103.53 -5.24 100.00 140 8.36 31.07 -5.31 119.59 -5.31 100.00 145 6.19 32.35 -5.75 139.15 -5.75 100.00 150 3.80 34.61 -6.48 171.61 -6.48 100.00 155 0.73 38.13 -7.53 249.61 -7.53 100.00 160 0.00 39.82 -8.00 298.31 -8.00 132.03 165 0.00 41.24 -8.38 295.77 -8.38 131.01 170 0.00 42.88 -8.81 292.99 -8.81 129.88 175 0.00 44.91 -9.31 289.71 -9.31 128.54 180 0.00 47.31 -9.87 286.09 -9.87 127.05 Frequency Coordination and Interference Analysis Report 08/08/2014 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 PROVO, UT Licensee Name Brigham Young University Latitude (NAD 83) 40° 15' 16.9" N Longitude (NAD 83) 111° 38' 52.3" W Ground Elevation (AMSL) 1433.78 m / 4704.0 ft Antenna Centerline (AGL) 21.34 m / 70.0 ft Antenna Model ASC Signal 4.5 Meter 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 -16.3 (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) 185 0.00 49.99 -10.00 285.28 -10.00 126.71 190 0.00 52.93 -10.00 285.28 -10.00 126.71 195 0.00 56.08 -10.00 285.28 -10.00 126.71 200 0.00 59.40 -10.00 285.28 -10.00 126.71 205 0.00 62.86 -10.00 285.28 -10.00 126.71 210 0.00 66.43 -10.00 285.28 -10.00 126.71 215 0.00 70.09 -10.00 285.28 -10.00 126.71 220 0.00 73.82 -10.00 285.28 -10.00 126.71 225 0.00 77.61 -10.00 285.28 -10.00 126.71 230 0.00 81.44 -10.00 285.28 -10.00 126.71 235 0.00 85.29 -10.00 285.28 -10.00 126.71 240 0.00 89.16 -10.00 285.28 -10.00 126.71 245 0.00 93.03 -10.00 285.28 -10.00 126.71 250 0.00 96.90 -10.00 285.28 -10.00 126.71 255 0.00 100.74 -10.00 285.28 -10.00 126.71 260 0.00 104.55 -10.00 285.28 -10.00 126.71 265 0.00 108.31 -10.00 285.28 -10.00 126.71 270 0.00 112.00 -10.00 285.28 -10.00 126.71 275 0.00 115.61 -10.00 285.28 -10.00 126.71 280 0.00 119.12 -10.00 285.28 -10.00 126.71 285 0.00 122.50 -10.00 285.28 -10.00 126.71 290 0.00 125.73 -10.00 285.28 -10.00 126.71 295 0.00 128.76 -10.00 285.28 -10.00 126.71 300 0.00 131.56 -10.00 285.28 -10.00 126.71 305 0.00 134.09 -10.00 285.28 -10.00 126.71 310 0.00 136.29 -10.00 285.28 -10.00 126.71 315 0.00 138.10 -10.00 285.28 -10.00 126.71 320 0.00 139.49 -10.00 285.28 -10.00 126.71 325 0.00 140.38 -10.00 285.28 -10.00 126.71 330 0.00 140.76 -10.00 285.28 -10.00 126.71 335 0.00 140.61 -10.00 285.28 -10.00 126.71 340 0.00 139.94 -10.00 285.28 -10.00 126.71 345 0.41 139.08 -10.00 260.36 -10.00 110.10 350 1.17 137.80 -10.00 215.11 -10.00 100.00 355 2.01 136.08 -10.00 194.26 -10.00 100.00 Frequency Coordination and Interference Analysis Report 08/08/2014 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. Jeffrey E. Cowles Engineer III, Telecommunications COMSEARCH 19700 Janelia Farm Boulevard Ashburn, Virginia 20147 DATED: August 8, 2014 Frequency Coordination and Interference Analysis Report 08/08/2014 Page 10 of 10


Document Created: 2014-08-11 10:41:41
Document Modified: 2014-08-11 10:41:41
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