Attachment Exhibit A SES-LIC-20190918-01165

Attachment Exhibit A

This document pretains to SES-LIC-20190918-01165 for License on a Satellite Earth Station filing.

IBFS_SESLIC2019091801165_1910640

FREQUENCY COORDINATION AND INTERFERENCE
ANALYSIS REPORT

Prepared for
GCI Communications Corp.
MOUNTAIN VILLAGE, AK
Satellite Earth Station

Prepared By:
COMSEARCH
19700 Janelia Farm Boulevard
Ashburn, VA 20147
April 01, 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

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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 04/01/2019 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 following companies reported potential great circle interference conflicts that did not
meet the objectives on a line-of-sight basis. These cases have been resolved by an
agreement between United2, LLC and GCI Communications Corp.

Company

United Utilities, Inc.
United2, LLC

No other carriers reported potential interference cases.

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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 03/18/2019.

Company
United Utilities, Inc.
United2, LLC

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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.

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

Date: 04/01/2019
Job Number: 190318COMSTC10
Administrative Information
Licensee Code P3203
Licensee Name GCI Communications Corp.
Site Information MOUNTAIN VILLAGE, AK
Latitude (NAD 83) 62° 5' 16.3" N
Longitude (NAD 83) 163° 43' 36.2" W
Climate Zone A
Rain Zone 2
Ground Elevation (AMSL) 36.4 m / 119.4 ft
Link Information
Satellite Type Geostationary
Mode TR - Transmit-Receive
Modulation Digital
Satellite Arc 104° W to 139° West Longitude
Azimuth Range 117.3° to 152.5°
Corresponding Elevation Angles 5.0° / 16.8°
Antenna Centerline (AGL) 4.57 m / 15.0 ft
Antenna Information Receive Transmit
Manufacturer Scientific Atlanta Scientific Atlanta
Model 8060 8060
Gain / Diameter 46.0 dBi / 6.1 m 49.8 dBi / 6.1 m
3-dB / 15-dB Beamwidth 0.70° / 1.40° 0.50° / 1.00°

45K0G7W - 72M0G7W & 60K0D7W - 72M0D7W
Max Available RF Power (dBW/4 kHz) -2.7 -19.54 -2.7 -19.54
(dBW/MHz) 21.3 4.46 21.3 4.46

Maximum EIRP (dBW/4 kHz) 47.1 33.27 47.1 33.27
(dBW/MHz) 47.1 57.27 42.9 57.27
(dBW) 57.61 72.81 58.86 72.81

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) 45K0G7W - 72M0G7W / 3700.0 - 4200.0 45K0G7W - 72M0G7W / 5925.0 - 6425.0
60K0D7W - 72M0D7W / 3700.0 - 4200.0 60K0D7W - 72M0D7W / 5925.0 - 6425.0

Max Great Circle Coordination Distance 615.4 km / 382.3 mi 367.3 km / 228.2 mi
Precipitation Scatter Contour Radius 620.6 km / 385.6 mi 101.7 km / 63.2 mi

Frequency Coordination and Interference Analysis Report 04/01/2019 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 MOUNTAIN VIL, AK
Licensee Name GCI Communications Corp.
Latitude (NAD 83) 62° 5' 16.3" N
Longitude (NAD 83) 163° 43' 36.2" W
Ground Elevation (AMSL) 36.4 m / 119.4 ft
Antenna Centerline (AGL) 4.57 m / 15.0 ft
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 -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 1.52 117.23 -10.00 205.01 -10.00 104.15
5 1.44 112.24 -10.00 207.37 -10.00 106.34
10 1.45 107.25 -10.00 207.12 -10.00 106.11
15 1.45 102.26 -10.00 207.11 -10.00 106.10
20 1.23 97.27 -10.00 213.18 -10.00 111.55
25 1.03 92.28 -10.00 219.35 -10.00 116.84
30 0.94 87.30 -10.00 223.74 -10.00 120.47
35 0.87 82.31 -10.00 227.47 -10.00 123.48
40 0.75 77.32 -10.00 234.46 -10.00 128.97
45 0.75 72.34 -10.00 234.46 -10.00 128.97
50 0.87 67.35 -10.00 227.27 -10.00 123.33
55 1.10 62.36 -10.00 217.31 -10.00 115.11
60 1.11 57.37 -10.00 217.02 -10.00 114.86
65 1.17 52.39 -10.00 215.19 -10.00 113.29
70 1.30 47.40 -9.89 211.69 -9.89 110.10
75 1.30 42.42 -8.69 217.64 -8.69 113.79
80 1.20 37.45 -7.34 227.91 -7.34 120.53
85 1.11 32.50 -5.80 239.64 -5.80 127.60
90 1.04 27.55 -4.00 253.33 -4.00 134.26
95 1.02 22.62 -1.86 268.08 -1.86 142.55
100 0.88 17.75 0.77 295.35 0.77 160.02
105 0.82 12.96 4.18 327.28 4.18 180.95
110 0.69 8.45 8.83 376.14 8.83 206.35
115 0.00 5.48 13.52 615.40 13.52 367.33
120 0.00 5.67 13.16 567.29 13.16 331.38
125 0.00 7.66 9.90 497.77 9.90 281.65
130 0.00 9.56 7.49 442.62 7.49 250.79
135 0.00 11.34 5.63 401.71 5.63 231.60
140 0.00 12.98 4.16 388.83 4.16 224.75
145 0.00 14.49 2.98 379.89 2.98 219.61
150 0.00 15.82 2.02 372.28 2.02 215.59
155 0.00 16.99 1.25 366.25 1.25 212.45
160 0.00 18.40 0.38 359.52 0.38 208.98
165 0.00 20.88 -0.99 349.06 -0.99 205.31
170 0.00 24.12 -2.56 337.36 -2.56 199.34
175 0.00 27.86 -4.12 325.95 -4.12 193.36
180 0.00 31.92 -5.60 315.42 -5.60 187.68
185 0.00 36.19 -6.97 305.31 -6.97 182.42

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

Coordination Values MOUNTAIN VILLAGE, AK
Licensee Name GCI Communications Corp.
Latitude (NAD 83) 62° 5' 16.3" N
Longitude (NAD 83) 163° 43' 36.2" W
Ground Elevation (AMSL) 36.4 m / 119.4 ft
Antenna Centerline (AGL) 4.57 m / 15.0 ft
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 -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 0.00 40.62 -8.22 296.87 -8.22 177.58
195 0.00 45.14 -9.36 289.36 -9.36 173.13
200 0.00 49.73 -10.00 285.28 -10.00 170.66
205 0.00 54.38 -10.00 285.28 -10.00 170.66
210 0.00 59.07 -10.00 285.28 -10.00 170.66
215 0.00 63.79 -10.00 285.28 -10.00 170.66
220 0.00 68.54 -10.00 285.28 -10.00 170.66
225 0.00 73.30 -10.00 285.28 -10.00 170.66
230 0.00 78.07 -10.00 285.28 -10.00 170.66
235 0.00 82.85 -10.00 285.28 -10.00 170.66
240 0.00 87.63 -10.00 285.28 -10.00 170.66
245 0.00 92.41 -10.00 285.28 -10.00 170.66
250 1.95 97.27 -10.00 195.88 -10.00 100.00
255 2.39 102.12 -10.00 185.51 -10.00 100.00
260 4.57 107.11 -10.00 139.46 -10.00 100.00
265 6.49 112.14 -10.00 119.83 -10.00 100.00
270 6.18 117.01 -10.00 123.27 -10.00 100.00
275 5.71 121.84 -10.00 128.00 -10.00 100.00
280 5.49 126.67 -10.00 130.10 -10.00 100.00
285 5.21 131.45 -10.00 132.78 -10.00 100.00
290 4.76 136.16 -10.00 136.78 -10.00 100.00
295 4.15 140.73 -10.00 145.57 -10.00 100.00
300 4.07 145.36 -10.00 146.75 -10.00 100.00
305 3.92 149.85 -10.00 149.55 -10.00 100.00
310 3.63 154.10 -10.00 155.49 -10.00 100.00
315 3.43 158.10 -10.00 159.86 -10.00 100.00
320 3.17 157.22 -10.00 165.81 -10.00 100.00
325 3.13 152.23 -10.00 166.61 -10.00 100.00
330 3.00 147.24 -10.00 171.35 -10.00 100.00
335 2.68 142.23 -10.00 179.01 -10.00 100.00
340 2.40 137.23 -10.00 185.40 -10.00 100.00
345 2.38 132.23 -10.00 185.86 -10.00 100.00
350 1.83 127.22 -10.00 199.09 -10.00 100.00
355 1.70 122.23 -10.00 202.73 -10.00 100.00

Frequency Coordination and Interference Analysis Report 04/01/2019 Page 9 of 10

Document Created: 2019-04-01 09:39:14
Document Modified: 2019-04-01 09:39:14

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