Attachment Coordination report SES-REG-20180615-01230

Attachment Coordination report

This document pretains to SES-REG-20180615-01230 for Earth Station Registration on a Satellite Earth Station filing.

IBFS_SESREG2018061501230_1413415

FREQUENCY COORDINATION AND INTERFERENCE
ANALYSIS REPORT

Prepared for
Comcast Cable Communications, LLC
WILMINGTON, DE
Satellite Earth Station

Prepared By:
COMSEARCH
19700 Janelia Farm Boulevard
Ashburn, VA 20147
June 05, 2018

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 06/05/2018 Page 2 of 20

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 06/05/2018 Page 3 of 20

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 06/05/2018 Page 4 of 20

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 06/05/2018.

Company
MCI Communications Services Inc.

Frequency Coordination and Interference Analysis Report 06/05/2018 Page 5 of 20

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 06/05/2018 Page 6 of 20

COMSEARCH
Earth Station Data Sheet
19700 Janelia Farm Boulevard, Ashburn, VA 20147
(703)726-5500 http://www.comsearch.com

Date: 06/05/2018
Job Number: 180605COMSGE14
Administrative Information
Status ENGINEER PROPOSAL
Call Sign
Licensee Code ZCATEC
Licensee Name Comcast Cable Communications, LLC
Site Information WILMINGTON, DE
Venue Name
Latitude (NAD 83) 39° 42' 12.0" N
Longitude (NAD 83) 75° 34' 20.0" W
Climate Zone A
Rain Zone 2
Ground Elevation (AMSL) 20.32 m / 66.7 ft
Link Information
Satellite Type Geostationary
Mode RO - Receive-Only
Modulation Digital
Satellite Arc 60° W to 143° West Longitude
Azimuth Range 156.4° to 255.1°
Corresponding Elevation Angles 41.3° / 8.6°
Antenna Centerline (AGL) 2.74 m / 9.0 ft
Antenna Information Receive - C40381
Manufacturer COMTECH ANTENNA SYSTEMS
Model 3.8 METER PF
Gain / Diameter 42.9 dBi / 3.8 m
3-dB / 15-dB Beamwidth 1.40° / 2.80°

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) 36M0G7W / 3700.0 - 4200.0

Max Great Circle Coordination Distance 477.3 km / 296.6 mi
Precipitation Scatter Contour Radius 557.2 km / 346.2 mi

Frequency Coordination and Interference Analysis Report 06/05/2018 Page 7 of 20

COMSEARCH
Earth Station Data Sheet
19700 Janelia Farm Boulevard, Ashburn, VA 20147
(703)726-5500 http://www.comsearch.com

Coordination Values WILMINGTON, DE
Licensee Name Comcast Cable Communications, LLC
Latitude (NAD 83) 39° 42' 12.0" N
Longitude (NAD 83) 75° 34' 20.0" W
Ground Elevation (AMSL) 20.32 m / 66.7 ft
Antenna Centerline (AGL) 2.74 m / 9.0 ft
Antenna Model COMTECH ANTENNA SYSTEMS 3.8 METER PF
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 0.35 104.72 -8.10 278.60
5 0.48 109.67 -8.10 264.04
10 0.32 114.60 -8.10 282.77
15 0.37 119.54 -9.92 264.74
20 0.32 123.16 -10.73 265.75
25 0.00 119.81 -10.02 285.13
30 0.00 116.50 -8.70 293.69
35 0.00 113.06 -8.10 297.65
40 0.00 109.54 -8.10 297.65
45 0.00 105.93 -8.10 297.65
50 0.00 102.27 -8.10 297.65
55 0.00 98.56 -8.10 297.65
60 0.00 94.83 -8.10 297.65
65 0.00 91.08 -8.10 297.65
70 0.00 87.32 -8.10 297.65
75 0.00 83.58 -8.10 297.65
80 0.00 79.85 -8.10 297.65
85 0.00 76.16 -8.10 297.65
90 0.00 72.52 -8.10 297.65
95 0.00 68.95 -8.10 297.65
100 0.00 65.46 -8.10 297.65
105 0.00 62.07 -8.10 297.65
110 0.23 58.70 -8.10 293.46
115 0.26 55.57 -8.10 289.83
120 0.21 52.67 -8.10 295.82
125 0.00 50.14 -8.10 297.65
130 0.00 47.73 -8.10 297.65
135 0.00 45.63 -8.10 297.65
140 0.00 43.90 -8.10 297.65
145 0.20 42.39 -8.05 297.36
150 0.21 41.51 -7.70 299.39
155 0.00 41.32 -7.63 300.80
160 0.00 41.43 -7.67 300.52
165 0.00 42.03 -7.91 298.92
170 0.00 43.05 -8.32 296.20
175 0.00 43.80 -8.62 294.20
180 0.00 44.06 -8.72 293.53
185 0.00 43.80 -8.62 294.20

Frequency Coordination and Interference Analysis Report 06/05/2018 Page 8 of 20

COMSEARCH
Earth Station Data Sheet
19700 Janelia Farm Boulevard, Ashburn, VA 20147
(703)726-5500 http://www.comsearch.com

Coordination Values WILMINGTON, DE
Licensee Name Comcast Cable Communications, LLC
Latitude (NAD 83) 39° 42' 12.0" N
Longitude (NAD 83) 75° 34' 20.0" W
Ground Elevation (AMSL) 20.32 m / 66.7 ft
Antenna Centerline (AGL) 2.74 m / 9.0 ft
Antenna Model COMTECH ANTENNA SYSTEMS 3.8 METER PF
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 43.05 -8.32 296.20
195 0.00 41.82 -7.83 299.47
200 0.00 40.15 -7.16 303.98
205 0.00 38.11 -6.72 306.99
210 0.00 35.72 -6.24 310.29
215 0.00 33.06 -6.10 311.30
220 0.00 30.15 -6.10 311.30
225 0.00 27.04 -4.92 320.28
230 0.00 23.77 -3.61 329.69
235 0.00 20.36 -2.24 339.70
240 0.00 16.84 1.06 364.80
245 0.00 13.24 5.43 399.24
250 0.00 9.98 9.92 438.24
255 0.00 8.58 11.32 477.31
260 0.00 9.86 10.04 439.39
265 0.00 13.05 5.80 402.33
270 0.00 17.12 0.78 362.61
275 0.00 21.58 -2.73 336.10
280 0.00 26.22 -4.59 322.61
285 0.00 30.97 -6.10 311.30
290 0.00 35.78 -6.26 310.21
295 0.00 40.63 -7.35 302.67
300 0.00 45.51 -8.10 297.65
305 0.00 50.41 -8.10 297.65
310 0.21 55.30 -8.10 295.99
315 0.26 60.22 -8.10 290.28
320 0.29 65.15 -8.10 285.84
325 0.33 70.09 -8.10 281.79
330 0.29 75.04 -8.10 286.18
335 0.25 79.98 -8.10 291.02
340 0.33 84.93 -8.10 281.14
345 0.38 89.88 -8.10 275.44
350 0.41 94.82 -8.10 272.15
355 0.35 99.77 -8.10 279.31

Frequency Coordination and Interference Analysis Report 06/05/2018 Page 9 of 20

COMSEARCH
Earth Station Data Sheet
19700 Janelia Farm Boulevard, Ashburn, VA 20147
(703)726-5500 http://www.comsearch.com

FREQUENCY COORDINATION AND INTERFERENCE
ANALYSIS REPORT

Prepared for
Comcast Cable Communications, LLC
WILMINGTON, DE
Satellite Earth Station

Prepared By:
COMSEARCH
19700 Janelia Farm Boulevard
Ashburn, VA 20147
June 05, 2018

Frequency Coordination and Interference Analysis Report 06/05/2018 Page 11 of 20

COMSEARCH
Earth Station Data Sheet
19700 Janelia Farm Boulevard, Ashburn, VA 20147
(703)726-5500 http://www.comsearch.com

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 06/05/2018 Page 12 of 20

COMSEARCH
Earth Station Data Sheet
19700 Janelia Farm Boulevard, Ashburn, VA 20147
(703)726-5500 http://www.comsearch.com

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 06/05/2018 Page 13 of 20

COMSEARCH
Earth Station Data Sheet
19700 Janelia Farm Boulevard, Ashburn, VA 20147
(703)726-5500 http://www.comsearch.com

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 receive-only earth station.

Company

<Companies Responding with Cases>

No other carriers reported potential interference cases.

Frequency Coordination and Interference Analysis Report 06/05/2018 Page 14 of 20

COMSEARCH
Earth Station Data Sheet
19700 Janelia Farm Boulevard, Ashburn, VA 20147
(703)726-5500 http://www.comsearch.com

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 06/05/2018.

Company
MCI Communications Services Inc.

Frequency Coordination and Interference Analysis Report 06/05/2018 Page 15 of 20

COMSEARCH
Earth Station Data Sheet
19700 Janelia Farm Boulevard, Ashburn, VA 20147
(703)726-5500 http://www.comsearch.com

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 06/05/2018 Page 16 of 20

COMSEARCH
Earth Station Data Sheet
19700 Janelia Farm Boulevard, Ashburn, VA 20147
(703)726-5500 http://www.comsearch.com

Date: 06/05/2018
Job Number: 180605COMSGE13
Administrative Information
Status ENGINEER PROPOSAL
Call Sign
Licensee Code ZCATEC
Licensee Name Comcast Cable Communications, LLC
Site Information WILMINGTON, DE
Venue Name
Latitude (NAD 83) 39° 42' 12.0" N
Longitude (NAD 83) 75° 34' 20.0" W
Climate Zone A
Rain Zone 2
Ground Elevation (AMSL) 20.32 m / 66.7 ft
Link Information
Satellite Type Geostationary
Mode RO - Receive-Only
Modulation Digital
Satellite Arc 60° W to 143° West Longitude
Azimuth Range 156.4° to 255.1°
Corresponding Elevation Angles 41.3° / 8.6°
Antenna Centerline (AGL) 2.74 m / 9.0 ft
Antenna Information Receive - FCC32
Manufacturer Patriot
Model 3.8 meter
Gain / Diameter 42.1 dBi / 3.8 m
3-dB / 15-dB Beamwidth 1.40° / 2.80°

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) 36M0G7W / 3700.0 - 4200.0

Max Great Circle Coordination Distance 460.2 km / 285.9 mi
Precipitation Scatter Contour Radius 557.2 km / 346.2 mi

Frequency Coordination and Interference Analysis Report 06/05/2018 Page 17 of 20

COMSEARCH
Earth Station Data Sheet
19700 Janelia Farm Boulevard, Ashburn, VA 20147
(703)726-5500 http://www.comsearch.com

Coordination Values WILMINGTON, DE
Licensee Name Comcast Cable Communications, LLC
Latitude (NAD 83) 39° 42' 12.0" N
Longitude (NAD 83) 75° 34' 20.0" W
Ground Elevation (AMSL) 20.32 m / 66.7 ft
Antenna Centerline (AGL) 2.74 m / 9.0 ft
Antenna Model Patriot 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 0.35 104.72 -10.00 266.71
5 0.48 109.67 -10.00 252.59
10 0.32 114.60 -10.00 270.77
15 0.37 119.54 -10.00 264.23
20 0.32 123.16 -10.00 270.21
25 0.00 119.81 -10.00 285.28
30 0.00 116.50 -10.00 285.28
35 0.00 113.06 -10.00 285.28
40 0.00 109.54 -10.00 285.28
45 0.00 105.93 -10.00 285.28
50 0.00 102.27 -10.00 285.28
55 0.00 98.56 -10.00 285.28
60 0.00 94.83 -10.00 285.28
65 0.00 91.08 -10.00 285.28
70 0.00 87.32 -10.00 285.28
75 0.00 83.58 -10.00 285.28
80 0.00 79.85 -10.00 285.28
85 0.00 76.16 -10.00 285.28
90 0.00 72.52 -10.00 285.28
95 0.00 68.95 -10.00 285.28
100 0.00 65.46 -10.00 285.28
105 0.00 62.07 -10.00 285.28
110 0.23 58.70 -10.00 281.18
115 0.26 55.57 -10.00 277.64
120 0.21 52.67 -10.00 283.49
125 0.00 50.14 -10.00 285.28
130 0.00 47.73 -9.97 285.48
135 0.00 45.63 -9.48 288.60
140 0.00 43.90 -9.06 291.32
145 0.20 42.39 -8.68 293.22
150 0.21 41.51 -8.45 294.40
155 0.00 41.32 -8.41 295.63
160 0.00 41.43 -8.43 295.44
165 0.00 42.03 -8.59 294.42
170 0.00 43.05 -8.85 292.71
175 0.00 43.80 -9.04 291.47
180 0.00 44.06 -9.10 291.06
185 0.00 43.80 -9.04 291.47

Frequency Coordination and Interference Analysis Report 06/05/2018 Page 18 of 20

COMSEARCH
Earth Station Data Sheet
19700 Janelia Farm Boulevard, Ashburn, VA 20147
(703)726-5500 http://www.comsearch.com

Coordination Values WILMINGTON, DE
Licensee Name Comcast Cable Communications, LLC
Latitude (NAD 83) 39° 42' 12.0" N
Longitude (NAD 83) 75° 34' 20.0" W
Ground Elevation (AMSL) 20.32 m / 66.7 ft
Antenna Centerline (AGL) 2.74 m / 9.0 ft
Antenna Model Patriot 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 43.05 -8.85 292.71
195 0.00 41.82 -8.53 294.77
200 0.00 40.15 -8.09 297.70
205 0.00 38.11 -7.53 301.51
210 0.00 35.72 -6.82 306.29
215 0.00 33.06 -5.98 312.76
220 0.00 30.15 -4.98 319.81
225 0.00 27.04 -3.80 328.29
230 0.00 23.77 -2.40 338.54
235 0.00 20.36 -0.72 351.13
240 0.00 16.84 1.34 366.99
245 0.00 13.24 3.96 387.77
250 0.00 9.98 7.02 412.69
255 0.00 8.58 8.67 460.21
260 0.00 9.86 7.16 413.88
265 0.00 13.05 4.11 388.39
270 0.00 17.12 1.16 365.58
275 0.00 21.58 -1.35 346.37
280 0.00 26.22 -3.47 330.71
285 0.00 30.97 -5.27 317.74
290 0.00 35.78 -6.84 306.16
295 0.00 40.63 -8.22 296.84
300 0.00 45.51 -9.45 288.78
305 0.00 50.41 -10.00 285.28
310 0.21 55.30 -10.00 283.65
315 0.26 60.22 -10.00 278.08
320 0.29 65.15 -10.00 273.75
325 0.33 70.09 -10.00 269.81
330 0.29 75.04 -10.00 274.08
335 0.25 79.98 -10.00 278.80
340 0.33 84.93 -10.00 269.17
345 0.38 89.88 -10.00 263.63
350 0.41 94.82 -10.00 260.44
355 0.35 99.77 -10.00 267.40

Frequency Coordination and Interference Analysis Report 06/05/2018 Page 19 of 20

Document Created: 2018-06-05 15:46:03
Document Modified: 2018-06-05 15:46:03

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