Attachment St.George Final Repo

This document pretains to SES-DBM-20170919-01038 for Database Entry MOD on a Satellite Earth Station filing.

IBFS_SESDBM2017091901038_1278387

FREQUENCY COORDINATION AND INTERFERENCE
            ANALYSIS REPORT


                     Prepared for
            Federal Aviation Administration
                   ST. GEORGE, AK
                Satellite Earth Station




                     Prepared By:
                    COMSEARCH
             19700 Janelia Farm Boulevard
                 Ashburn, VA 20147
                   August 21, 2017


                                                      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                                             08/21/2017                        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   08/21/2017         Page 3 of 10


2. SUMMARY OF RESULTS


No great circle interference cases were identified during the interference study of the
proposed earth station.




Frequency Coordination and Interference Analysis Report   08/21/2017      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 08/21/2017.

        Company
        Comsearch




Frequency Coordination and Interference Analysis Report                 08/21/2017              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            08/21/2017            Page 6 of 10


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

Date:                                    08/21/2017
Job Number:                              170821COMSGE01
Administrative Information
Status                                   ENGINEER PROPOSAL
Call Sign                                E050312
Licensee Code                            FEDFAA
Licensee Name                            Federal Aviation Administration
Site Information                         ST. GEORGE, AK
Venue Name
Latitude (NAD 83)                        56° 34' 20.2" N
Longitude (NAD 83)                       169° 38' 50.5" W
Climate Zone                             B
Rain Zone                                2
Ground Elevation (AMSL)                  49.7 m / 163.1 ft
Link Information
Satellite Type                           Geostationary
Mode                                     TR - Transmit-Receive
Modulation                               Digital
Satellite Arc                            115° W to 150° West Longitude
Azimuth Range                            120.6° to 156.8°
Corresponding Elevation Angles           10.0° / 23.3°
Antenna Centerline (AGL)                 3.96 m / 13.0 ft
Antenna Information                            Receive - FCC32                        Transmit - FCC32
Manufacturer                                   Scientific-Atlanta                     Scientific-Atlanta
Model                                          8345                                   8345
Gain / Diameter                                43.3 dBi / 4.5 m                       46.7 dBi / 4.5 m
3-dB / 15-dB Beamwidth                         1.20° / 2.50°                          0.76° / 1.52°

Max Available RF Power        (dBW/4 kHz)                                             -13.7
                              (dBW/MHz)                                               10.3

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)               64K0G7W - 262KG7W / 3700.0 - 4200.0    64K0G7W - 262KG7W / 5925.0 - 6425.0


Max Great Circle Coordination Distance         412.2 km / 256.1 mi                    147.2 km / 91.5 mi
Precipitation Scatter Contour Radius           540.0 km / 335.5 mi                    100.0 km / 62.1 mi




Frequency Coordination and Interference Analysis Report                      08/21/2017             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              ST. GEORGE, AK
Licensee Name                    Federal Aviation Administration
Latitude (NAD 83)                56° 34' 20.2" N
Longitude (NAD 83)               169° 38' 50.5" W
Ground Elevation (AMSL)          49.7 m / 163.1 ft
Antenna Centerline (AGL)         3.96 m / 13.0 ft
Antenna Model                    Scientific-Atlanta 4.5 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                                                               -13.7 (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               1.49                 120.26                    -10.00       225.93                -10.00         100.00
 5               1.49                 115.33                    -10.00       225.96                -10.00         100.00
 10              1.56                 110.40                    -10.00       221.94                -10.00         100.00
 15              1.57                 105.46                    -10.00       221.19                -10.00         100.00
 20              1.58                 100.51                    -10.00       221.17                -10.00         100.00
 25              1.59                  95.57                    -10.00       220.33                -10.00         100.00
 30              1.58                  90.62                    -10.00       221.00                -10.00         100.00
 35              1.60                  85.68                    -10.00       219.79                -10.00         100.00
 40              1.56                  80.73                    -10.00       221.82                -10.00         100.00
 45              1.50                  75.79                    -10.00       225.15                -10.00         100.00
 50              1.44                  70.86                    -10.00       228.73                -10.00         100.00
 55              1.72                  65.90                    -10.00       213.45                -10.00         100.00
 60              1.70                  60.97                    -10.00       214.53                -10.00         100.00
 65              1.83                  56.03                    -10.00       208.05                -10.00         100.00
 70              2.07                  51.08                    -10.00       196.81                -10.00         100.00
 75              2.79                  46.08                     -9.59       173.47                 -9.59         100.00
 80              2.64                  41.18                     -8.37       185.22                 -8.37         100.00
 85              2.68                  36.28                     -6.99       191.97                 -6.99         100.00
 90              2.69                  31.41                     -5.43       201.03                 -5.43         100.00
 95              2.66                  26.60                     -3.62       213.81                 -3.62         100.00
100              2.59                  21.87                     -1.50       230.94                 -1.50         100.00
105              2.61                  17.26                      1.07       248.20                  1.07         100.00
110              2.58                  12.95                      4.19       271.67                  4.19         100.00
115              2.69                   9.24                      7.86       297.45                  7.86         105.36
120              2.92                   7.13                     10.67       358.75                 10.67         131.50
125              2.95                   8.30                      9.02       293.24                  9.02         103.84
130              3.04                  10.45                      6.52       267.84                  6.52         100.00
135              3.02                  12.58                      4.51       254.71                  4.51         100.00
140              2.98                  14.56                      2.92       244.62                  2.92         100.00
145              2.98                  16.35                      1.66       235.75                  1.66         100.00
150              2.88                  18.04                      0.59       232.86                  0.59         100.00
155              2.54                  19.76                     -0.39       241.04                 -0.39         100.00
160              2.28                  21.17                     -1.14       247.20                 -1.14         100.00
165              2.06                  22.65                     -1.88       252.05                 -1.88         100.00
170              1.95                  24.89                     -2.90       250.44                 -2.90         100.00
175              1.70                  27.91                     -4.15       255.81                 -4.15         100.00
180              1.53                  31.35                     -5.40       256.40                 -5.40         100.00
185              1.32                  35.14                     -6.64       259.29                 -6.64         100.00



Frequency Coordination and Interference Analysis Report                   08/21/2017             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              ST. GEORGE, AK
Licensee Name                    Federal Aviation Administration
Latitude (NAD 83)                56° 34' 20.2" N
Longitude (NAD 83)               169° 38' 50.5" W
Ground Elevation (AMSL)          49.7 m / 163.1 ft
Antenna Centerline (AGL)         3.96 m / 13.0 ft
Antenna Model                    Scientific-Atlanta 4.5 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                                                               -13.7 (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              1.12                  39.16                     -7.82       261.04                 -7.82         100.00
195              0.94                  43.33                     -8.92       267.81                 -8.92         100.00
200              0.72                  47.64                     -9.95       288.68                 -9.95         107.36
205              0.58                  52.02                    -10.00       309.91                -10.00         114.31
210              0.45                  56.45                    -10.00       335.99                -10.00         120.54
215              0.34                  60.93                    -10.00       366.49                -10.00         131.21
220              0.28                  65.44                    -10.00       383.27                -10.00         137.01
225              0.00                  70.01                    -10.00       412.20                -10.00         147.24
230              0.00                  74.56                    -10.00       412.20                -10.00         147.24
235              0.00                  79.13                    -10.00       412.20                -10.00         147.24
240              0.00                  83.72                    -10.00       412.20                -10.00         147.24
245              0.00                  88.31                    -10.00       412.20                -10.00         147.24
250              0.00                  92.90                    -10.00       412.20                -10.00         147.24
255              0.00                  97.49                    -10.00       412.20                -10.00         147.24
260              0.00                 102.07                    -10.00       412.20                -10.00         147.24
265              0.00                 106.64                    -10.00       412.20                -10.00         147.24
270              0.00                 111.18                    -10.00       412.20                -10.00         147.24
275              0.00                 115.69                    -10.00       412.20                -10.00         147.24
280              0.00                 120.16                    -10.00       412.20                -10.00         147.24
285              0.00                 124.58                    -10.00       412.20                -10.00         147.24
290              0.23                 129.01                    -10.00       403.22                -10.00         144.04
295              0.65                 133.45                    -10.00       298.47                -10.00         110.64
300              1.14                 137.85                    -10.00       245.41                -10.00         100.00
305              1.44                 142.06                    -10.00       228.41                -10.00         100.00
310              1.68                 146.06                    -10.00       215.75                -10.00         100.00
315              1.84                 149.77                    -10.00       207.54                -10.00         100.00
320              2.00                 153.12                    -10.00       199.44                -10.00         100.00
325              2.38                 154.53                    -10.00       185.46                -10.00         100.00
330              2.57                 149.78                    -10.00       178.61                -10.00         100.00
335              2.66                 144.95                    -10.00       175.57                -10.00         100.00
340              2.76                 140.07                    -10.00       172.37                -10.00         100.00
345              1.34                 134.96                    -10.00       234.27                -10.00         100.00
350              1.34                 130.07                    -10.00       234.27                -10.00         100.00
355              1.41                 125.17                    -10.00       230.16                -10.00         100.00




Frequency Coordination and Interference Analysis Report                   08/21/2017             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.




Gary K. Edwards
Senior Manager
COMSEARCH
19700 Janelia Farm Boulevard
Ashburn, VA 20147


DATED: August 21, 2017




Frequency Coordination and Interference Analysis Report   08/21/2017   Page 10 of 10



Document Created: 2017-08-21 15:32:50
Document Modified: 2017-08-21 15:32:50

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