Attachment Comsearch Report

This document pretains to SES-AMD-20190410-00524 for Amended Filing on a Satellite Earth Station filing.

IBFS_SESAMD2019041000524_1648372

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for Space Exploration Holdings CONRAD, MT Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 March 22, 2019

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 03/22/2019 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 common carrier microwave environment. Further, there will be no restrictions of its operation due to interference considerations. Frequency Coordination and Interference Analysis Report 03/22/2019 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. The losses were found to be sufficient to reduce the signal levels to acceptable magnitudes in every case. Frequency Coordination and Interference Analysis Report 03/22/2019 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 02/21/2019. Company 3 Rivers Communications AC BidCO LLC AT&T Mobility Spectrum LLC - ID, MT, WY AT&T Mobility Spectrum-MN/IA/ND/NE/MT/SD Big Sky Internet, Inc. Blackfoot Communications, Inc. Centric Internet Services Cowles Montana Media (KHQ, Inc.) Gallatin County 911 Communications Gallatin Wireless Internet, LLC Global Net, Inc. Gold Creek Cellular of Montana LP Granite County Sheriffs Department Grizzly Broadband, LLC Hellfire, LLC Jefferson, County of Lewis & Clark County Lewis and Clark County Sheriff's Office Little Apple Technologies, LLC Missoula, City of Montana Internet Corporation Montana State University Montana West MontanaSky Networks, Inc. New Cingular Wireless PCS LLC - Montana NorthWestern Corporation Omnicom Paging Plus LLC Qwest Corporation RF Wave LLC Rocky Mountain Internet Inc Ronan Telephone Co SpeedConnect, LLC Sprint Spectrum L.P. State of Montana T-Mobile License LLC The University of Montana Trouser, LLC Truphone, Inc Verizon Wireless (VAW) LLC -CO/ID/MT/WY Vision Net, Inc Frequency Coordination and Interference Analysis Report 03/22/2019 Page 5 of 11

Frequency Coordination and Interference Analysis Report 03/22/2019 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 03/22/2019 Page 7 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 03/22/2019 Job Number: 190221COMSGE08 Administrative Information Status ENGINEER PROPOSAL Call Sign Licensee Code SPACEX Licensee Name Space Exploration Holdings Site Information CONRAD, MT Venue Name Latitude (NAD 83) 48° 12' 11.9" N Longitude (NAD 83) 111° 56' 43.0" W Climate Zone A Rain Zone 5 Ground Elevation (AMSL) 1058.97 m / 3474.3 ft Link Information Satellite Type Low Earth Orbit Mode TR - Transmit-Receive Modulation Digital Minimum Elevation Angle 25.0° Azimuth Range 0.0° to 360° Antenna Centerline (AGL) 0.91 m / 3.0 ft Antenna Information Receive - FCC32 Transmit - FCC32 Manufacturer Cobham Cobham Model MK3 series MK3 series Gain / Diameter 39.3 dBi / 1.0 m 40.1 dBi / 1.0 m 3-dB / 15-dB Beamwidth 1.50° / 3.40° 1.20° / 2.80° Max Available RF Power (dBW/4 kHz) -1.2 (dBW/MHz) 22.8 Maximum EIRP (dBW/4 kHz) 38.9 (dBW/MHz) 62.9 Interference Objectives: Long Term -156.0 dBW/MHz 20% -151.0 dBW/4 kHz 20% Short Term -146.0 dBW/MHz 0.01% -128.0 dBW/4 kHz 0.0025% Frequency Information Receive 11.0 GHz Transmit 14.0 GHz Emission / Frequency Range (MHz) 240MD7W / 10700.0 - 12700.0 62M5D7W - 240MD7W / 14000.0 - 14500.0 Max Great Circle Coordination Distance 265.5 km / 165.0 mi 202.3 km / 125.7 mi Precipitation Scatter Contour Radius 355.1 km / 220.6 mi 100.0 km / 62.1 mi Frequency Coordination and Interference Analysis Report 03/22/2019 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 CONRAD, MT Licensee Name Space Exploration Holdings Latitude (NAD 83) 48° 12' 11.9" N Longitude (NAD 83) 111° 56' 43.0" W Ground Elevation (AMSL) 1058.97 m / 3474.3 ft Antenna Centerline (AGL) 0.91 m / 3.0 ft Antenna Model Cobham 1 meter Antenna Mode Receive 11.0 GHz Transmit 14.0 GHz Interference Objectives: Long Term -156.0 dBW/MHz 20% -151.0 dBW/4 kHz 20% Short Term -146.0 dBW/MHz 0.01% -128.0 dBW/4 kHz 0.0025% Max Available RF Power -1.2 (dBW/4 kHz) Receive 11.0 GHz Transmit 14.0 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 0 0.00 74.58 -5.50 265.50 -5.50 202.30 5 0.00 70.00 -5.50 265.50 -5.50 202.30 10 0.00 65.45 -5.50 265.50 -5.50 202.30 15 0.00 60.93 -5.50 265.50 -5.50 202.30 20 0.00 56.46 -5.50 265.50 -5.50 202.30 25 0.00 52.05 -5.50 265.50 -5.50 202.30 30 0.00 47.72 -5.50 265.50 -5.50 202.30 35 0.00 43.50 -5.50 265.50 -5.50 202.30 40 0.00 39.42 -5.50 265.50 -5.50 202.30 45 0.00 35.53 -5.50 265.50 -5.50 202.30 50 0.00 31.91 -5.50 265.50 -5.50 202.30 55 0.00 28.66 -5.50 265.50 -5.50 202.30 60 0.00 25.92 -5.50 265.50 -5.50 202.30 65 0.00 23.86 -5.50 265.50 -5.50 202.30 70 0.00 22.69 -5.50 265.50 -5.50 202.30 75 0.00 22.52 -5.50 265.50 -5.50 202.30 80 0.00 23.39 -5.50 265.50 -5.50 202.30 85 0.00 25.19 -5.50 265.50 -5.50 202.30 90 0.00 27.74 -5.50 265.50 -5.50 202.30 95 0.00 30.84 -5.50 265.50 -5.50 202.30 100 0.00 34.36 -5.50 265.50 -5.50 202.30 105 0.00 38.17 -5.50 265.50 -5.50 202.30 110 0.00 42.20 -5.50 265.50 -5.50 202.30 115 0.00 46.38 -5.50 265.50 -5.50 202.30 120 0.00 50.68 -5.50 265.50 -5.50 202.30 125 0.00 55.07 -5.50 265.50 -5.50 202.30 130 0.00 59.52 -5.50 265.50 -5.50 202.30 135 0.00 64.03 -5.50 265.50 -5.50 202.30 140 0.00 68.57 -5.50 265.50 -5.50 202.30 145 0.00 73.15 -5.50 265.50 -5.50 202.30 150 0.00 77.74 -5.50 265.50 -5.50 202.30 155 0.00 82.35 -5.50 265.50 -5.50 202.30 160 0.00 86.97 -5.50 265.50 -5.50 202.30 165 0.00 91.59 -5.50 265.50 -5.50 202.30 170 0.00 96.20 -5.50 265.50 -5.50 202.30 175 0.00 100.82 -5.50 265.50 -5.50 202.30 180 0.00 105.42 -5.50 265.50 -5.50 202.30 185 0.00 110.00 -5.50 265.50 -5.50 202.30 Frequency Coordination and Interference Analysis Report 03/22/2019 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 CONRAD, MT Licensee Name Space Exploration Holdings Latitude (NAD 83) 48° 12' 11.9" N Longitude (NAD 83) 111° 56' 43.0" W Ground Elevation (AMSL) 1058.97 m / 3474.3 ft Antenna Centerline (AGL) 0.91 m / 3.0 ft Antenna Model Cobham 1 meter Antenna Mode Receive 11.0 GHz Transmit 14.0 GHz Interference Objectives: Long Term -156.0 dBW/MHz 20% -151.0 dBW/4 kHz 20% Short Term -146.0 dBW/MHz 0.01% -128.0 dBW/4 kHz 0.0025% Max Available RF Power -1.2 (dBW/4 kHz) Receive 11.0 GHz Transmit 14.0 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 190 0.00 114.55 -5.50 265.50 -5.50 202.30 195 0.00 119.07 -5.50 265.50 -5.50 202.30 200 0.00 123.54 -5.50 265.50 -5.50 202.30 205 0.00 127.95 -5.50 265.50 -5.50 202.30 210 0.00 132.28 -5.50 265.50 -5.50 202.30 215 0.00 136.50 -5.50 265.50 -5.50 202.30 220 0.00 140.58 -5.50 265.50 -5.50 202.30 225 0.00 144.47 -5.50 265.50 -5.50 202.30 230 0.00 148.09 -5.50 265.50 -5.50 202.30 235 0.00 151.34 -5.50 265.50 -5.50 202.30 240 0.00 154.08 -5.50 265.50 -5.50 202.30 245 0.00 156.14 -5.50 265.50 -5.50 202.30 250 0.00 157.31 -5.50 265.50 -5.50 202.30 255 0.00 157.48 -5.50 265.50 -5.50 202.30 260 0.00 156.61 -5.50 265.50 -5.50 202.30 265 0.00 154.81 -5.50 265.50 -5.50 202.30 270 0.00 152.26 -5.50 265.50 -5.50 202.30 275 0.00 149.16 -5.50 265.50 -5.50 202.30 280 0.00 145.64 -5.50 265.50 -5.50 202.30 285 0.00 141.83 -5.50 265.50 -5.50 202.30 290 0.00 137.80 -5.50 265.50 -5.50 202.30 295 0.00 133.62 -5.50 265.50 -5.50 202.30 300 0.00 129.32 -5.50 265.50 -5.50 202.30 305 0.00 124.93 -5.50 265.50 -5.50 202.30 310 0.00 120.48 -5.50 265.50 -5.50 202.30 315 0.00 115.97 -5.50 265.50 -5.50 202.30 320 0.00 111.43 -5.50 265.50 -5.50 202.30 325 0.00 106.85 -5.50 265.50 -5.50 202.30 330 0.00 102.26 -5.50 265.50 -5.50 202.30 335 0.00 97.65 -5.50 265.50 -5.50 202.30 340 0.00 93.03 -5.50 265.50 -5.50 202.30 345 0.00 88.41 -5.50 265.50 -5.50 202.30 350 0.00 83.80 -5.50 265.50 -5.50 202.30 355 0.00 79.18 -5.50 265.50 -5.50 202.30 Frequency Coordination and Interference Analysis Report 03/22/2019 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: March 22, 2019 Frequency Coordination and Interference Analysis Report 03/22/2019 Page 11 of 11


Document Created: 2019-03-22 14:48:04
Document Modified: 2019-03-22 14:48:04
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