Attachment Coordination report

This document pretains to SES-MOD-20180423-00395 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2018042300395_1378303

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for Comcast Cable Communications Mgt LLC (National Digital Television Center, Inc.) LITTLETON, CO Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 April 21, 2018

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 04/18/2018 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 04/18/2018 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. 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-receive earth station. Company AT&T Mobility Spectrum LLC – CO Community Radio for Northern Colorado New Cingular Wireless PCS LLC -Colorado Tribune Broadcasting Denver License, LLC LP Broadband, Inc. City of Lakewood, CO State of Colorado No other carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 04/18/2018 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 03/09/2018. Company AC BidCO LLC AT&T Mobility Spectrum LLC - CO AirLife Denver Arvada Police Dept. BNSF Railway Company Basin Electric Power Cooperative Black Hawk Police Department Black Hills Power and Light Bonanza Creek Energy Inc Boulder, County of CBS Communications Services Inc CBS Television Stations Cellular Inc. Network Corporation Cellular, Inc. Financial Corporation Chaffee County Telecom, LLC Citicasters Licenses, Inc. City of Aurora City of Colorado Springs City of Lakewood, CO Colorado Interstate Gas Company Colorado Springs Utilities Community Radio for Northern Colorado Directlink, LLC Douglas County Sheriff's Office Elbert County Communications Authority Entravision Holdings, LLC Fones West Digital Systems Inc. Front Range Internet, Inc. Gilpin County Sheriff's Office Gray Television Licensee, LLC Holy Cross Electric Association, Inc. Industrial Tower and Wireless, LLC Intermountain Rural Electric Association KSE Radio Ventures, LLC Kellin Communications LP Broadband, Inc. Larimer County Technical Communications Live Wire Networks, Inc. MHO Networks Morgan County Communications Morgan County Rural Electric Association Frequency Coordination and Interference Analysis Report 04/18/2018 Page 5 of 11

Mountain Broadband LLC Mountain Parks Electric Inc. Mountain View Electric Assocation, Inc. Multimedia Holdings Corporation NE Colorado Cellular, Inc. New Cingular Wireless PCS - ID, WY New Cingular Wireless PCS LLC -Colorado Nex-Tech Wireless, LLC Olympic Wireless, LLC Pitkin County Platte River Power Authority Qwest Corporation Roggen Telephone Enterprises, Inc. Sangre de Cristo Communications, LLC Sprint Communications Company, LP Sprint Spectrum L.P. State of Colorado T-Mobile License LLC Tallgrass Operations, LLC Tri-State Generation & Transmission Assn Tribune Broadcasting Denver License, LLC Union Pacific Railroad Company Union Telephone Company, Inc. University Corp for Atmospheric Research Verizon Wireless (VAW) LLC -CO/ID/MT/WY Xcel Energy Services, Inc. Y-W Electric Association, Inc Frequency Coordination and Interference Analysis Report 04/18/2018 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 04/18/2018 Page 7 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 04/18/2018 Job Number: 180309COMSGE01 Administrative Information Status ENGINEER PROPOSAL Call Sign E930368 Licensee Code COMGTL Licensee Name Comcast Cable Communications Mgt LLC (National Digital Television Center, Inc) Site Information LITTLETON, CO Venue Name Latitude (NAD 83) 39° 34' 45.3" N Longitude (NAD 83) 104° 56' 19.4" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 1731.6 m / 5681.1 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 65° W to 145° West Longitude Azimuth Range 127.3° to 232.8° Corresponding Elevation Angles 28.6° / 28.5° Antenna Centerline (AGL) 8.99 m / 29.5 ft Antenna Information Receive - FCC32 Transmit - FCC32 Manufacturer Vertex Vertex Model 9 meter 9 meter Gain / Diameter 50.1 dBi / 9.0 m 53.5 dBi / 9.0 m 3-dB / 15-dB Beamwidth 0.55° / 1.20° 0.40° / 0.80° Max Available RF Power (dBW/4 kHz) -2.7 (dBW/MHz) 21.3 Maximum EIRP (dBW/4 kHz) 50.8 (dBW/MHz) 74.8 Interference Objectives: Long Term -144.0 dBW/MHz 20% -154.0 dBW/4 kHz 20% Short Term -134.0 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) 2M50G7W - 36M0G7W / 3700.0 - 4200.0 2M50G7W - 36M0G7W / 5925.0 - 6425.0 Max Great Circle Coordination Distance 247.7 km / 153.9 mi 192.3 km / 119.5 mi Precipitation Scatter Contour Radius 457.4 km / 284.2 mi 100.0 km / 62.1 mi Frequency Coordination and Interference Analysis Report 04/18/2018 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 LITTLETON, CO Licensee Name Comcast Cable Communications Mgt LLC Latitude (NAD 83) 39° 34' 45.3" N Longitude (NAD 83) 104° 56' 19.4" W Ground Elevation (AMSL) 1731.6 m / 5681.1 ft Antenna Centerline (AGL) 8.99 m / 29.5 ft Antenna Model Vertex 9 meter Antenna Mode Receive 4.0 GHz Transmit 6.1 GHz Interference Objectives: Long Term -144.0 dBW/MHz 20% -154.0 dBW/4 kHz 20% Short Term -134.0 dBW/MHz 0.01% -131.0 dBW/4 kHz 0.0025% Max Available RF Power -2.7 (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 0.00 122.05 -10.00 220.54 -10.00 170.66 5 0.00 117.96 -10.00 220.54 -10.00 170.66 10 0.00 113.72 -10.00 220.54 -10.00 170.66 15 0.00 109.44 -10.00 220.54 -10.00 170.66 20 0.00 105.11 -10.00 220.54 -10.00 170.66 25 0.00 100.76 -10.00 220.54 -10.00 170.66 30 0.00 96.38 -10.00 220.54 -10.00 170.66 35 0.00 92.00 -10.00 220.54 -10.00 170.66 40 0.00 87.61 -10.00 220.54 -10.00 170.66 45 0.00 83.22 -10.00 220.54 -10.00 170.66 50 0.00 78.85 -10.00 220.54 -10.00 170.66 55 0.00 74.49 -10.00 220.54 -10.00 170.66 60 0.00 70.17 -10.00 220.54 -10.00 170.66 65 0.00 65.89 -10.00 220.54 -10.00 170.66 70 0.24 61.59 -10.00 216.26 -10.00 164.40 75 0.35 57.38 -10.00 206.03 -10.00 153.12 80 0.40 53.27 -10.00 204.23 -10.00 148.55 85 0.46 49.27 -10.00 198.76 -10.00 142.90 90 0.43 45.45 -9.44 203.60 -9.44 147.42 95 0.49 41.77 -8.52 202.46 -8.52 145.49 100 0.48 38.37 -7.60 206.60 -7.60 149.19 105 0.48 35.30 -6.69 208.39 -6.69 153.00 110 0.53 32.58 -5.82 208.28 -5.82 152.13 115 0.53 30.43 -5.08 211.83 -5.08 155.43 120 0.55 28.89 -4.52 212.82 -4.52 156.06 125 0.61 28.07 -4.21 211.41 -4.21 154.32 130 0.67 28.05 -4.20 208.18 -4.20 150.86 135 0.86 28.71 -4.45 200.19 -4.45 140.20 140 0.92 30.25 -5.02 194.67 -5.02 135.32 145 1.24 32.22 -5.70 180.11 -5.70 124.40 150 1.23 34.84 -6.55 176.67 -6.55 122.18 155 0.80 37.54 -7.36 190.51 -7.36 133.22 160 0.99 39.40 -7.89 178.09 -7.89 124.32 165 1.33 40.71 -8.24 163.67 -8.24 114.31 170 0.87 42.34 -8.67 180.88 -8.67 127.18 175 0.90 43.05 -8.85 178.71 -8.85 125.51 180 0.97 43.23 -8.89 174.64 -8.89 122.20 185 1.22 42.74 -8.77 164.87 -8.77 115.65 Frequency Coordination and Interference Analysis Report 04/18/2018 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 LITTLETON, CO Licensee Name Comcast Cable Communications Mgt LLC Latitude (NAD 83) 39° 34' 45.3" N Longitude (NAD 83) 104° 56' 19.4" W Ground Elevation (AMSL) 1731.6 m / 5681.1 ft Antenna Centerline (AGL) 8.99 m / 29.5 ft Antenna Model Vertex 9 meter Antenna Mode Receive 4.0 GHz Transmit 6.1 GHz Interference Objectives: Long Term -144.0 dBW/MHz 20% -154.0 dBW/4 kHz 20% Short Term -134.0 dBW/MHz 0.01% -131.0 dBW/4 kHz 0.0025% Max Available RF Power -2.7 (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) 190 1.29 41.94 -8.57 163.58 -8.57 114.46 195 0.98 41.04 -8.33 176.89 -8.33 123.64 200 0.95 39.43 -7.90 180.12 -7.90 126.01 205 0.95 37.42 -7.33 183.14 -7.33 128.14 210 0.84 35.15 -6.65 191.76 -6.65 133.79 215 0.76 32.61 -5.83 199.18 -5.83 140.07 220 0.55 30.56 -5.13 210.45 -5.13 153.96 225 0.42 29.08 -4.59 223.25 -4.59 168.92 230 0.24 28.40 -4.33 242.98 -4.33 188.00 235 0.00 28.59 -4.40 247.70 -4.40 192.28 240 0.00 29.32 -4.68 246.24 -4.68 191.22 245 0.00 30.79 -5.21 243.46 -5.21 189.18 250 0.00 32.90 -5.93 239.77 -5.93 186.42 255 0.00 35.53 -6.76 235.60 -6.76 183.20 260 0.00 38.57 -7.66 231.27 -7.66 179.75 265 0.00 41.93 -8.56 227.00 -8.56 176.24 270 0.00 45.54 -9.46 222.92 -9.46 172.75 275 0.00 49.35 -10.00 220.54 -10.00 170.66 280 0.00 53.30 -10.00 220.54 -10.00 170.66 285 0.00 57.37 -10.00 220.54 -10.00 170.66 290 0.00 61.54 -10.00 220.54 -10.00 170.66 295 0.00 65.77 -10.00 220.54 -10.00 170.66 300 0.00 70.05 -10.00 220.54 -10.00 170.66 305 0.00 74.38 -10.00 220.54 -10.00 170.66 310 0.00 78.73 -10.00 220.54 -10.00 170.66 315 0.00 83.11 -10.00 220.54 -10.00 170.66 320 0.00 87.50 -10.00 220.54 -10.00 170.66 325 0.00 91.89 -10.00 220.54 -10.00 170.66 330 0.00 96.28 -10.00 220.54 -10.00 170.66 335 0.00 100.66 -10.00 220.54 -10.00 170.66 340 0.00 105.02 -10.00 220.54 -10.00 170.66 345 0.00 109.35 -10.00 220.54 -10.00 170.66 350 0.00 113.64 -10.00 220.54 -10.00 170.66 355 0.00 117.88 -10.00 220.54 -10.00 170.66 Frequency Coordination and Interference Analysis Report 04/18/2018 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: April 21, 2018 Frequency Coordination and Interference Analysis Report 04/18/2018 Page 11 of 11


Document Created: 2018-04-21 10:48:53
Document Modified: 2018-04-21 10:48:53
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