Attachment Talkeetna

This document pretains to SES-DBM-20150522-00309 for Database Entry MOD on a Satellite Earth Station filing.

IBFS_SESDBM2015052200309_1081552

FREQUENCY COORDINATION AND INTERFERENCE
            ANALYSIS REPORT


                     Prepared for
            Federal Aviation Administration
                   TALKEETNA, AK
                Satellite Earth Station




                     Prepared By:
                    COMSEARCH
             19700 Janelia Farm Boulevard
                 Ashburn, VA 20147
                    March 11, 2015


                                                      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                                             03/11/2015                        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   03/11/2015         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.




Frequency Coordination and Interference Analysis Report    03/11/2015         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 01/28/2015.

        Company
        ACS Long Distance License Sub, Inc.
        ACS Wireless License Sub, Inc.
        ACS of Anchorage License Sub, Inc.
        Alascom Inc
        Alaska Pipeline Company
        Alaska Railroad Corporation
        Alaska Wireless Network, LLC
        Chugach Electric Association, Inc.
        ENSTAR NATURAL GAS COMPANY
        GCI Communications Corporation
        MATANUSKA KENAI INC
        MATANUSKA SUSITNA BOROUGH SCHOOL DIST
        MTA Communications, LLC
        Matanuska Telephone Association, Inc.
        Matanuska-Susitna, Bourough of
        New Cingular Wireless PCS LLC - Alaska
        Norstar Pipeline Company
        State of Alaska
        Verizon Wireless (VAW) LLC - Alaska




Frequency Coordination and Interference Analysis Report                 03/11/2015              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            03/11/2015            Page 6 of 10


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

Date:                                    03/11/2015
Job Number:                              150128COMSGE01
Administrative Information
Status                                   ENGINEER PROPOSAL
Call Sign                                E960333
Licensee Code                            FEDFAA
Licensee Name                            Federal Aviation Administration
Site Information                         TALKEETNA, AK
Venue Name
Latitude (NAD 83)                        62° 17' 56.0" N
Longitude (NAD 83)                       150° 6' 16.0" W
Climate Zone                             A
Rain Zone                                2
Ground Elevation (AMSL)                  170.0 m / 557.7 ft
Link Information
Satellite Type                           Geostationary
Mode                                     TR - Transmit-Receive
Modulation                               Digital
Satellite Arc                            115° W to 188° West Longitude
Azimuth Range                            141.6° to 221.3°
Corresponding Elevation Angles           13.9° / 13.0°
Antenna Centerline (AGL)                 2.13 m / 7.0 ft
Antenna Information                            Receive - FCC32                        Transmit - FCC32
Manufacturer                                   Scientific-Atlanta                     Scientific-Atlanta
Model                                          8136                                   8136
Gain / Diameter                                41.8 dBi / 3.6 m                       45.3 dBi / 3.6 m
3-dB / 15-dB Beamwidth                         1.40° / 3.00°                          0.90° / 1.70°

Max Available RF Power        (dBW/4 kHz)                                             -12.3
                              (dBW/MHz)                                               11.7

Maximum EIRP                  (dBW/4 kHz)                                             33.0
                              (dBW/MHz)                                               57.0

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)               131KG7D - 153KG7D / 3700.0 - 4200.0    114KG7D - 153KG7D / 5925.0 - 6425.0


Max Great Circle Coordination Distance         388.0 km / 241.0 mi                    187.9 km / 116.7 mi
Precipitation Scatter Contour Radius           526.2 km / 326.9 mi                    100.0 km / 62.1 mi




Frequency Coordination and Interference Analysis Report                      03/11/2015            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              TALKEETNA, AK
Licensee Name                     Federal Aviation Administration
Latitude (NAD 83)                 62° 17' 56.0" N
Longitude (NAD 83)                150° 6' 16.0" W
Ground Elevation (AMSL)           170.0 m / 557.7 ft
Antenna Centerline (AGL)          2.13 m / 7.0 ft
Antenna Model                     Scientific-Atlanta 3.6 meter
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                                                            -12.3 (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              137.03                  -10.00          285.28                -10.00         136.26
 5              0.00              134.81                  -10.00          285.28                -10.00         136.26
 10             0.00              130.08                  -10.00          285.28                -10.00         136.26
 15             0.00              125.32                  -10.00          285.28                -10.00         136.26
 20             0.00              120.53                  -10.00          285.28                -10.00         136.26
 25             0.00              115.72                  -10.00          285.28                -10.00         136.26
 30             0.00              110.89                  -10.00          285.28                -10.00         136.26
 35             0.00              106.06                  -10.00          285.28                -10.00         136.26
 40             0.00              101.21                  -10.00          285.28                -10.00         136.26
 45             0.00               96.36                  -10.00          285.28                -10.00         136.26
 50             0.90               91.52                  -10.00          225.69                -10.00         100.00
 55             0.84               86.65                  -10.00          228.89                -10.00         100.00
 60             1.04               81.77                  -10.00          219.02                -10.00         100.00
 65             0.78               76.91                  -10.00          232.67                -10.00         100.58
 70             0.78               72.05                  -10.00          232.60                -10.00         100.53
 75             1.37               67.15                  -10.00          209.24                -10.00         100.00
 80             1.41               62.29                  -10.00          208.11                -10.00         100.00
 85             1.71               57.41                  -10.00          202.39                -10.00         100.00
 90             1.91               52.54                  -10.00          197.00                -10.00         100.00
 95             2.49               47.62                   -9.95          183.67                 -9.95         100.00
100             2.37               42.85                   -8.80          191.74                 -8.80         100.00
105             2.41               38.08                   -7.52          197.03                 -7.52         100.00
110             1.95               33.53                   -6.13          211.48                 -6.13         100.00
115             1.62               29.07                   -4.59          229.67                 -4.59         100.00
120             0.92               25.01                   -2.95          266.60                 -2.95         113.69
125             0.41               21.24                   -1.18          319.83                 -1.18         144.46
130             0.00               18.01                    0.61          361.31                  0.61         174.59
135             0.00               15.35                    2.35          374.88                  2.35         181.31
140             0.00               14.00                    3.35          382.88                  3.35         185.18
145             0.00               14.32                    3.10          380.87                  3.10         184.22
150             0.00               15.64                    2.15          373.30                  2.15         180.53
155             0.00               16.79                    1.37          367.24                  1.37         177.55
160             0.00               17.75                    0.77          362.53                  0.77         175.20
165             0.00               18.52                    0.31          359.00                  0.31         173.42
170             0.00               19.06                   -0.00          356.57                 -0.00         172.19
175             0.00               19.39                   -0.19          355.14                 -0.19         171.47
180             0.00               19.51                   -0.25          354.66                 -0.25         171.22
185             0.00               19.40                   -0.19          355.13                 -0.19         171.46




Frequency Coordination and Interference Analysis Report                03/11/2015             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              TALKEETNA, AK
Licensee Name                     Federal Aviation Administration
Latitude (NAD 83)                 62° 17' 56.0" N
Longitude (NAD 83)                150° 6' 16.0" W
Ground Elevation (AMSL)           170.0 m / 557.7 ft
Antenna Centerline (AGL)          2.13 m / 7.0 ft
Antenna Model                     Scientific-Atlanta 3.6 meter
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                                                            -12.3 (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               19.07                   -0.01          356.56                 -0.01         172.19
195             0.00               18.51                    0.31          359.02                  0.31         173.43
200             0.00               17.75                    0.77          362.54                  0.77         175.21
205             0.00               16.79                    1.38          367.25                  1.38         177.55
210             0.00               15.63                    2.15          373.31                  2.15         180.54
215             0.00               14.31                    3.11          380.96                  3.11         184.26
220             0.00               13.11                    4.06          387.96                  4.06         187.91
225             0.00               13.55                    3.70          385.71                  3.70         186.54
230             0.00               15.63                    2.15          373.33                  2.15         180.55
235             0.00               18.82                    0.13          357.63                  0.13         172.73
240             0.00               22.65                   -1.88          342.41                 -1.88         163.30
245             0.00               26.86                   -3.73          328.82                 -3.73         156.45
250             0.00               31.28                   -5.38          316.97                 -5.38         150.67
255             0.00               35.84                   -6.86          306.04                 -6.86         145.78
260             0.00               40.50                   -8.19          297.09                 -8.19         141.62
265             0.00               45.21                   -9.38          289.25                 -9.38         138.05
270             0.00               49.97                  -10.00          285.28                -10.00         136.26
275             0.00               54.76                  -10.00          285.28                -10.00         136.26
280             0.00               59.58                  -10.00          285.28                -10.00         136.26
285             0.00               64.41                  -10.00          285.28                -10.00         136.26
290             0.00               69.26                  -10.00          285.28                -10.00         136.26
295             0.00               74.12                  -10.00          285.28                -10.00         136.26
300             0.00               78.98                  -10.00          285.28                -10.00         136.26
305             0.00               83.85                  -10.00          285.28                -10.00         136.26
310             0.00               88.72                  -10.00          285.28                -10.00         136.26
315             0.00               93.59                  -10.00          285.28                -10.00         136.26
320             0.00               98.46                  -10.00          285.28                -10.00         136.26
325             0.00              103.32                  -10.00          285.28                -10.00         136.26
330             0.00              108.18                  -10.00          285.28                -10.00         136.26
335             0.00              113.04                  -10.00          285.28                -10.00         136.26
340             0.00              117.88                  -10.00          285.28                -10.00         136.26
345             0.00              122.70                  -10.00          285.28                -10.00         136.26
350             0.00              127.51                  -10.00          285.28                -10.00         136.26
355             0.00              132.29                  -10.00          285.28                -10.00         136.26




Frequency Coordination and Interference Analysis Report                03/11/2015             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 11, 2015




Frequency Coordination and Interference Analysis Report   03/11/2015   Page 10 of 10



Document Created: 2015-03-27 13:34:03
Document Modified: 2015-03-27 13:34:03

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