Attachment Supplement Infor SES-LIC-20081205-01600

Attachment Supplement Infor

This document pretains to SES-LIC-20081205-01600 for License on a Satellite Earth Station filing.

IBFS_SESLIC2008120501600_686477

FREQUENCY COORDINATION AND INTERFERENCE
ANALYSIS REPORT

Prepared for
Telalaska, Inc.
ANCHORAGE, AK
Satellite Earth Station

Prepared By:
COMSEARCH
19700 Janelia Farm Boulevard
Ashburn, VA 20147
August 20, 2008

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 08/20/2008 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 08/20/2008 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-receive earth station.

Company

ACS LONG DISTANCE LICENSE SUB, INC.
ACS OF ANCHORAGE LICENSE SUB, INC.
CHUGACH ELECTRIC ASSOCIATION, INC.
MATANUSKA KENAI INC
Matanuska Telephone Association, Inc.
STATE OF ALASKA

No other carriers reported potential interference cases.

Frequency Coordination and Interference Analysis Report 08/20/2008 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.

Company
ACS LONG DISTANCE LICENSE SUB, INC.
ACS OF ANCHORAGE LICENSE SUB, INC.
ACS WIRELESS LICENSE SUB, INC.
ALASCOM, INC.
CHUGACH ELECTRIC ASSOCIATION, INC.
ENSTAR NATURAL GAS COMPANY
GCI Communication Corporation
MATANUSKA KENAI INC
MTA Communications, Inc.
Matanuska Telephone Association, Inc.
Norstar Pipeline Company
STATE OF ALASKA

Frequency Coordination and Interference Analysis Report 08/20/2008 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 08/20/2008 Page 6 of 10

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

Date: 08/20/2008
Job Number: 080820COMSTC09
Administrative Information
Licensee Name Telalaska, Inc.
Site Information ANCHORAGE, AK
Latitude (NAD 83) 61° 10' 13.0" N
Longitude (NAD 83) 149° 52' 47.0" W
Climate Zone A
Rain Zone 2
Ground Elevation (AMSL) 48.0 m / 157.5 ft

Link Information
Satellite Type Geostationary
Mode TR - Transmit-Receive
Modulation Digital
Satellite Arc 119° W to 119° West Longitude
Azimuth Range 145.7° to 145.7°
Corresponding Elevation Angles 16.1° / 16.1°
Antenna Centerline (AGL) 3.05 m / 10.0 ft
Antenna Information Receive Transmit
Manufacturer ANDREW CORP. ANDREW CORP.
Gain / Diameter 43.9 dBi / 4.6 m 47.5 dBi / 4.6 m
3-dB / 15-dB Beamwidth 1.00° / 2.00° 0.50° / 1.00°

117KG7W - 9M00G7W
Max Available RF Power (dBW/4 kHz) -13.2 -16.04
(dBW/MHz) 10.8 7.96

Maximum EIRP (dBW/4 kHz) 34.3 31.46
(dBW/MHz) 58.3 55.46
(dBW) 51.39 64.98

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) 117KG7W - 9M00G7W / 4162.0 - 4179.0 117KG7W - 9M00G7W / 6387.0 - 6404.0

Max Great Circle Coordination Distance 342.4 km / 212.7 mi 158.3 km / 98.3 mi
Precipitation Scatter Contour Radius 515.0 km / 320.0 mi 100.0 km / 62.1 mi

Frequency Coordination and Interference Analysis Report 08/20/2008 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 ANCHORAGE, AK
Licensee Name Telalaska, Inc.
Latitude (NAD 83) 61° 10' 13.0" N
Longitude (NAD 83) 149° 52' 47.0" W
Ground Elevation (AMSL) 48.0 m / 157.5 ft
Antenna Centerline (AGL) 3.05 m / 10.0 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 -13.2 (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 0.00 142.52 -10.00 285.28 -10.00 133.76
5 0.00 138.02 -10.00 285.28 -10.00 133.76
10 0.00 133.43 -10.00 285.28 -10.00 133.76
15 0.00 128.78 -10.00 285.28 -10.00 133.76
20 0.00 124.09 -10.00 285.28 -10.00 133.76
25 0.00 119.36 -10.00 285.28 -10.00 133.76
30 0.00 114.61 -10.00 285.28 -10.00 133.76
35 0.00 109.84 -10.00 285.28 -10.00 133.76
40 0.00 105.06 -10.00 285.28 -10.00 133.76
45 0.00 100.26 -10.00 285.28 -10.00 133.76
50 0.00 95.46 -10.00 285.28 -10.00 133.76
55 0.00 90.66 -10.00 285.28 -10.00 133.76
60 0.00 85.85 -10.00 285.28 -10.00 133.76
65 0.00 81.05 -10.00 285.28 -10.00 133.76
70 0.26 76.24 -10.00 277.77 -10.00 130.06
75 0.34 71.44 -10.00 267.58 -10.00 123.22
80 0.38 66.65 -10.00 263.26 -10.00 120.27
85 0.42 61.87 -10.00 259.18 -10.00 117.44
90 0.45 57.12 -10.00 255.67 -10.00 114.98
95 0.53 52.39 -10.00 248.04 -10.00 109.65
100 0.60 47.68 -9.96 243.52 -9.96 106.29
105 0.61 43.05 -8.85 249.19 -8.85 108.70
110 0.78 38.43 -7.62 246.23 -7.62 104.58
115 0.73 33.98 -6.28 257.11 -6.28 110.06
120 0.78 29.63 -4.79 263.37 -4.79 111.93
125 0.89 25.47 -3.15 267.24 -3.15 111.86
130 0.87 21.72 -1.42 280.22 -1.42 117.65
135 0.90 18.50 0.32 290.68 0.32 121.36
140 0.89 16.20 1.76 302.40 1.76 126.20
145 0.82 15.29 2.39 313.01 2.39 131.30
150 0.56 16.11 1.82 327.53 1.82 140.65
155 0.35 18.23 0.48 340.90 0.48 153.36
160 0.24 21.24 -1.18 342.35 -1.18 158.27
165 0.00 24.94 -2.92 334.68 -2.92 156.10
170 0.00 28.89 -4.52 323.13 -4.52 150.55
175 0.00 33.09 -5.99 312.67 -5.99 145.67
180 0.00 37.48 -7.34 302.73 -7.34 141.44
185 0.00 41.98 -8.58 294.50 -8.58 137.77

Frequency Coordination and Interference Analysis Report 08/20/2008 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 ANCHORAGE, AK
Licensee Name Telalaska, Inc.
Latitude (NAD 83) 61° 10' 13.0" N
Longitude (NAD 83) 149° 52' 47.0" W
Ground Elevation (AMSL) 48.0 m / 157.5 ft
Antenna Centerline (AGL) 3.05 m / 10.0 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 -13.2 (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 46.57 -9.70 287.18 -9.70 134.57
195 0.00 51.22 -10.00 285.28 -10.00 133.76
200 0.00 55.91 -10.00 285.28 -10.00 133.76
205 0.00 60.64 -10.00 285.28 -10.00 133.76
210 0.00 65.39 -10.00 285.28 -10.00 133.76
215 0.00 70.16 -10.00 285.28 -10.00 133.76
220 0.00 74.94 -10.00 285.28 -10.00 133.76
225 0.00 79.74 -10.00 285.28 -10.00 133.76
230 0.00 84.54 -10.00 285.28 -10.00 133.76
235 0.00 89.34 -10.00 285.28 -10.00 133.76
240 0.00 94.15 -10.00 285.28 -10.00 133.76
245 0.00 98.95 -10.00 285.28 -10.00 133.76
250 0.22 103.76 -10.00 282.92 -10.00 133.46
255 0.00 108.53 -10.00 285.28 -10.00 133.76
260 0.00 113.30 -10.00 285.28 -10.00 133.76
265 0.00 118.06 -10.00 285.28 -10.00 133.76
270 0.00 122.80 -10.00 285.28 -10.00 133.76
275 0.00 127.50 -10.00 285.28 -10.00 133.76
280 0.00 132.16 -10.00 285.28 -10.00 133.76
285 0.00 136.77 -10.00 285.28 -10.00 133.76
290 0.00 141.30 -10.00 285.28 -10.00 133.76
295 0.00 145.72 -10.00 285.28 -10.00 133.76
300 0.00 149.98 -10.00 285.28 -10.00 133.76
305 0.00 154.01 -10.00 285.28 -10.00 133.76
310 0.00 157.67 -10.00 285.28 -10.00 133.76
315 0.00 160.76 -10.00 285.28 -10.00 133.76
320 0.00 162.96 -10.00 285.28 -10.00 133.76
325 0.00 163.89 -10.00 285.28 -10.00 133.76
330 0.00 163.35 -10.00 285.28 -10.00 133.76
335 0.00 161.47 -10.00 285.28 -10.00 133.76
340 0.00 158.59 -10.00 285.28 -10.00 133.76
345 0.00 155.06 -10.00 285.28 -10.00 133.76
350 0.00 151.11 -10.00 285.28 -10.00 133.76
355 0.00 146.91 -10.00 285.28 -10.00 133.76

Frequency Coordination and Interference Analysis Report 08/20/2008 Page 9 of 10

Document Created: 2008-12-24 11:39:33
Document Modified: 2008-12-24 11:39:33

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