Attachment Coordination report

This document pretains to SES-LIC-20190308-00300 for License on a Satellite Earth Station filing.

IBFS_SESLIC2019030800300_1635082

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for Denali 20020, LLC BREWSTER, WA Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 March 08, 2019

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 03/08/2019 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 03/08/2019 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 every case. 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 are considered on the interfering paths, sufficient blockage exists to negate harmful interference from occurring with the proposed transmit-only earth station. Company <Companies Responding with Cases> No other carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 03/08/2019 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 01/17/2019. Company Avista Corporation BNSF Railway Company Bookbinder, LLC Chelan County PUD #1 Inland Cellular LLC Kittcom Multi Agency Communications Center New Cingular Wireless PCS LLC-Washington Nextel License Holdings 4 Inc. Noel Communications, Inc. Northwest Pipeline GP Pick Two LLC Public Utility Dist #2 of Grant County Puget Sound Energy, Inc Rivercom 911 USCOC of Richland, Inc. Verizon Wireless (VAW) LLC - (WA) Washington State of Dept of Transportat Washington, State of Western Sub-RSA LTD Partnership Yakima MSA Limited Partnership Frequency Coordination and Interference Analysis Report 03/08/2019 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 03/08/2019 Page 6 of 10

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 03/08/2019 Job Number: 190117COMSGE01 Administrative Information Status ENGINEER PROPOSAL Call Sign Licensee Code DENALI Licensee Name Denali 20020, LLC Site Information BREWSTER, WA Venue Name Latitude (NAD 83) 48° 8' 49.9" N Longitude (NAD 83) 119° 41' 44.5" W Climate Zone A Rain Zone 5 Ground Elevation (AMSL) 385.35 m / 1264.3 ft Link Information Satellite Type Geostationary Mode TO - Transmit-Only Modulation Digital Satellite Arc 125° W to 125° West Longitude Azimuth Range 187.1° to 187.1° Corresponding Elevation Angles 34.5° / 34.5° Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Information Transmit - FCC32 Manufacturer General Dynamics Model 11.1 meter Gain / Diameter 55.5 dBi / 11.1 m 3-dB / 15-dB Beamwidth 0.50° / 1.00° Max Available RF Power (dBW/4 kHz) -5.8 (dBW/MHz) 18.2 Maximum EIRP (dBW/4 kHz) 49.7 (dBW/MHz) 73.7 Interference Objectives: Long Term -154.0 dBW/4 kHz 20% Short Term -131.0 dBW/4 kHz 0.0025% Frequency Information Transmit 6.7 GHz Emission / Frequency Range (MHz) 20M5G7D / 6608.58 20M5G7D / 6659.73 Max Great Circle Coordination Distance 172.4 km / 107.1 mi Precipitation Scatter Contour Radius 100.0 km / 62.1 mi Frequency Coordination and Interference Analysis Report 03/08/2019 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 BREWSTER, WA Licensee Name Denali 20020, LLC Latitude (NAD 83) 48° 8' 49.9" N Longitude (NAD 83) 119° 41' 44.5" W Ground Elevation (AMSL) 385.35 m / 1264.3 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model General Dynamics 11.1 meter Antenna Mode Transmit 6.7 GHz Interference Objectives: Long Term -154.0 dBW/4 kHz 20% Short Term -131.0 dBW/4 kHz 0.0025% Max Available RF Power -5.8 (dBW/4 kHz) Transmit 6.7 GHz Horizon Antenna Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) 0 0.33 145.21 -10.00 144.45 5 1.00 146.47 -10.00 108.59 10 0.45 145.87 -10.00 133.97 15 0.85 145.57 -10.00 114.98 20 1.64 144.99 -10.00 100.00 25 0.76 142.34 -10.00 119.15 30 0.37 139.71 -10.00 140.34 35 0.61 137.21 -10.00 126.18 40 0.92 134.40 -10.00 112.23 45 0.88 131.10 -10.00 113.81 50 1.51 127.92 -10.00 100.00 55 1.43 124.20 -10.00 100.00 60 1.71 120.48 -10.00 100.00 65 1.84 116.59 -10.00 100.00 70 1.95 112.59 -10.00 100.00 75 2.10 108.53 -10.00 100.00 80 2.43 104.44 -10.00 100.00 85 2.44 100.24 -10.00 100.00 90 2.55 96.02 -10.00 100.00 95 2.72 91.79 -10.00 100.00 100 2.54 87.54 -10.00 100.00 105 2.22 83.33 -10.00 100.00 110 2.10 79.13 -10.00 100.00 115 1.86 75.00 -10.00 100.00 120 2.02 70.83 -10.00 100.00 125 1.75 66.82 -10.00 100.00 130 1.07 63.04 -10.00 106.71 135 0.65 59.32 -10.00 124.26 140 0.36 55.70 -10.00 141.62 145 0.00 52.29 -10.00 157.27 150 0.00 48.89 -10.00 157.27 155 0.00 45.70 -9.50 159.10 160 0.00 42.79 -8.78 161.76 165 0.00 40.20 -8.11 164.35 170 0.00 38.01 -7.50 168.33 175 0.00 36.29 -6.99 170.29 180 0.00 35.11 -6.63 171.69 185 0.00 34.53 -6.45 172.39 Frequency Coordination and Interference Analysis Report 03/08/2019 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 BREWSTER, WA Licensee Name Denali 20020, LLC Latitude (NAD 83) 48° 8' 49.9" N Longitude (NAD 83) 119° 41' 44.5" W Ground Elevation (AMSL) 385.35 m / 1264.3 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model General Dynamics 11.1 meter Antenna Mode Transmit 6.7 GHz Interference Objectives: Long Term -154.0 dBW/4 kHz 20% Short Term -131.0 dBW/4 kHz 0.0025% Max Available RF Power -5.8 (dBW/4 kHz) Transmit 6.7 GHz Horizon Antenna Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) 190 0.00 34.58 -6.47 172.33 195 0.00 35.26 -6.68 171.51 200 0.00 36.52 -7.06 170.02 205 0.00 38.32 -7.59 167.98 210 0.00 40.59 -8.21 163.95 215 0.00 43.23 -8.89 161.34 220 0.00 46.20 -9.61 158.67 225 0.00 49.42 -10.00 157.27 230 0.00 52.85 -10.00 157.27 235 0.00 56.45 -10.00 157.27 240 0.00 60.18 -10.00 157.27 245 0.46 63.86 -10.00 133.49 250 1.93 67.41 -10.00 100.00 255 3.02 71.28 -10.00 100.00 260 2.12 75.62 -10.00 100.00 265 2.96 79.70 -10.00 100.00 270 3.72 83.90 -10.00 100.00 275 3.83 88.19 -10.00 100.00 280 3.45 92.48 -10.00 100.00 285 3.34 96.75 -10.00 100.00 290 3.38 101.02 -10.00 100.00 295 2.22 105.06 -10.00 100.00 300 1.66 109.09 -10.00 100.00 305 2.49 113.38 -10.00 100.00 310 2.18 117.33 -10.00 100.00 315 1.89 121.17 -10.00 100.00 320 1.59 124.86 -10.00 100.00 325 1.80 128.65 -10.00 100.00 330 2.30 132.46 -10.00 100.00 335 2.09 135.67 -10.00 100.00 340 1.92 138.62 -10.00 100.00 345 1.47 140.99 -10.00 100.00 350 0.63 142.55 -10.00 125.16 355 0.00 143.71 -10.00 157.27 Frequency Coordination and Interference Analysis Report 03/08/2019 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: March 08, 2019 Frequency Coordination and Interference Analysis Report 03/08/2019 Page 10 of 10


Document Created: 2019-03-08 14:51:59
Document Modified: 2019-03-08 14:51:59
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