Attachment Exhibit B2

This document pretains to SES-MOD-20130204-00149 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2013020400149_984618

FREQUENCY COORDINATION AND INTERFERENCE
            ANALYSIS REPORT


                      Prepared for
            GCI Communication Corporation
                    TAKOTNA, AK
                 Satellite Earth Station




                     Prepared By:
                    COMSEARCH
             19700 Janelia Farm Boulevard
                 Ashburn, VA 20147
                   February 1, 2013


                                                      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                                             02/01/2013                        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   02/01/2013         Page 3 of 10


2. SUMMARY OF RESULTS


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

No carriers reported potential interference cases.




Frequency Coordination and Interference Analysis Report    02/01/2013          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.




Frequency Coordination and Interference Analysis Report            02/01/2013            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            02/01/2013            Page 6 of 10


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

Date:                                    02/01/2013
Job Number:                              130201COMSTC02
Administrative Information
Call Sign                                E120235
Licensee Code                            P3203
Licensee Name                            GCI Communication Corporation
Site Information                         TAKOTNA, AK
Latitude (NAD 83)                        62° 59' 17.8" N
Longitude (NAD 83)                       156° 4' 12.2" W
Climate Zone                             A
Rain Zone                                2
Ground Elevation (AMSL)                  124.1 m / 407.2 ft
Link Information
Satellite Type                           Geostationary
Mode                                     TR - Transmit-Receive
Modulation                               Digital
Satellite Arc                            99° W to 194° West Longitude
Azimuth Range                            120.0° to 221.2°
Corresponding Elevation Angles           5.6° / 12.5°
Antenna Centerline (AGL)                 3.66 m / 12.0 ft
Antenna Information                            Receive                                 Transmit
Manufacturer                                   Skyware Global                          Skyware Global
Model                                          243                                     243
Gain / Diameter                                38.0 dBi / 2.4 m                        42.0 dBi / 2.4 m
3-dB / 15-dB Beamwidth                         2.10° / 4.00°                          1.30° / 2.60°

                                                                                     45K0G7W - 36M0G7W
                                                                                     45K0D7W - 36M0D7W
Max Available RF Power        (dBW/4 kHz)                                               -8.1    -16.53
                              (dBW/MHz)                                                 15.9      7.47

Maximum EIRP                  (dBW/4 kHz)                                              33.9     25.47
                              (dBW/MHz)                                                57.88    49.45
                              (dBW)                                                    44.4     65.01

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 - 36M0G7W / 3700.0 - 4200.0     45K0G7W - 36M0G7W / 5925.0 - 6425.0
                                               45K0D7W - 36M0D7W / 3700.0 - 4200.0     45K0D7W - 36M0D7W / 5925.0 - 6425.0


Max Great Circle Coordination Distance         498.4 km / 309.7 mi                     239.8 km / 149.0 mi
Precipitation Scatter Contour Radius           606.3 km / 376.7 mi                     100.0 km / 62.1 mi




Frequency Coordination and Interference Analysis Report                      02/01/2013             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             TAKOTNA, AK
Licensee Name                     GCI Communication Corporation
Latitude (NAD 83)                 62° 59' 17.8" N
Longitude (NAD 83)                156° 4' 12.2" W
Ground Elevation (AMSL)           124.1 m / 407.2 ft
Antenna Centerline (AGL)          3.66 m / 12.0 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                                                            -8.1 (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             21.75             118.70                  -10.00          100.00               -10.00         100.00
  5             21.75             113.94                  -10.00          100.00               -10.00         100.00
 10             24.36             108.89                  -10.00          100.00               -10.00         100.00
 15             24.36             104.18                  -10.00          100.00               -10.00         100.00
 20             26.09              99.35                  -10.00          100.00               -10.00         100.00
 25             18.53              94.86                  -10.00          100.00               -10.00         100.00
 30             17.32              89.99                  -10.00          100.00               -10.00         100.00
 35             17.62              85.10                  -10.00          100.00               -10.00         100.00
 40             17.62              80.21                  -10.00          100.00               -10.00         100.00
 45             17.62              75.32                  -10.00          100.00               -10.00         100.00
 50             17.73              70.45                  -10.00          100.00               -10.00         100.00
 55             17.73              65.58                  -10.00          100.00               -10.00         100.00
 60             17.73              60.72                  -10.00          100.00               -10.00         100.00
 65              6.68              55.00                  -10.00          117.77               -10.00         100.00
 70              6.92              50.00                  -10.00          115.18               -10.00         100.00
 75              6.92              45.00                   -9.33          117.83                -9.33         100.00
 80              6.92              40.01                   -8.05          122.93                -8.05         100.00
 85              6.92              35.01                   -6.60          128.81                -6.60         100.00
 90              0.30              30.42                   -5.08          305.36                -5.08         156.44
 95              0.30              25.52                   -3.17          319.65                -3.17         163.70
100              0.65              20.58                   -0.83          299.61                -0.83         144.07
105              0.74              15.75                    2.07          316.02                 2.07         150.33
110              0.80              11.09                    5.88          343.17                 5.88         163.59
115              1.09               6.74                   11.28          371.80                11.28         176.13
120              1.40               4.23                   16.33          498.41                16.33         239.80
125              1.72               5.53                   13.43          427.58                13.43         198.40
130              3.38               5.81                   12.90          351.08                12.90         154.05
135              5.84               5.18                   14.14          280.78                14.14         109.97
140              5.26               7.27                   10.47          244.52                10.47         100.00
145              6.02               7.93                    9.51          227.82                 9.51         100.00
150              5.70               9.49                    7.57          218.88                 7.57         100.00
155              6.42               9.86                    7.16          207.24                 7.16         100.00
160              7.73               9.46                    7.61          196.31                 7.61         100.00
165              8.00               9.89                    7.12          189.98                 7.12         100.00
170              5.87              12.50                    4.58          201.50                 4.58         100.00
175              4.31              14.37                    3.06          210.91                 3.06         100.00
180              2.59              16.19                    1.77          241.08                 1.77         100.94
185              2.55              16.13                    1.81          242.51                 1.81         101.93




Frequency Coordination and Interference Analysis Report                02/01/2013            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             TAKOTNA, AK
Licensee Name                     GCI Communication Corporation
Latitude (NAD 83)                 62° 59' 17.8" N
Longitude (NAD 83)                156° 4' 12.2" W
Ground Elevation (AMSL)           124.1 m / 407.2 ft
Antenna Centerline (AGL)          3.66 m / 12.0 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                                                            -8.1 (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             2.08               16.28                    1.71          254.83                 1.71         110.84
195             1.77               16.06                    1.86          266.15                 1.86         118.47
200             1.43               15.67                    2.12          280.78                 2.12         127.87
205             1.08               15.09                    2.53          297.82                 2.53         137.12
210             0.72               14.33                    3.09          326.05                 3.09         155.93
215             0.62               13.14                    4.04          340.65                 4.04         165.52
220             0.27               12.29                    4.77          384.92                 4.77         199.81
225             0.93               12.18                    4.86          325.40                 4.86         152.00
230             1.47               14.09                    3.27          288.13                 3.27         130.94
235             3.05               16.69                    1.44          227.33                 1.44         100.00
240             5.95               19.89                   -0.47          171.31                -0.47         100.00
245             7.23               24.37                   -2.67          141.02                -2.67         100.00
250             7.38               29.24                   -4.65          132.06                -4.65         100.00
255             7.63               34.13                   -6.33          122.40                -6.33         100.00
260             7.70               39.07                   -7.80          115.73                -7.80         100.00
265             7.05               44.09                   -9.11          117.31                -9.11         100.00
270             6.75               49.08                  -10.00          117.05               -10.00         100.00
275             6.97               54.02                  -10.00          114.68               -10.00         100.00
280             6.44               59.02                  -10.00          120.38               -10.00         100.00
285             6.44               63.98                  -10.00          120.39               -10.00         100.00
290             6.44               68.95                  -10.00          120.38               -10.00         100.00
295             6.44               73.92                  -10.00          120.38               -10.00         100.00
300             9.03               78.85                  -10.00          100.00               -10.00         100.00
305             9.03               83.84                  -10.00          100.00               -10.00         100.00
310             9.03               88.83                  -10.00          100.00               -10.00         100.00
315             10.07              93.82                  -10.00          100.00               -10.00         100.00
320             10.21              98.82                  -10.00          100.00               -10.00         100.00
325             11.06             103.82                  -10.00          100.00               -10.00         100.00
330             12.08             108.82                  -10.00          100.00               -10.00         100.00
335             14.21             113.81                  -10.00          100.00               -10.00         100.00
340             16.54             118.75                  -10.00          100.00               -10.00         100.00
345             19.37             123.55                  -10.00          100.00               -10.00         100.00
350             19.37             128.49                  -10.00          100.00               -10.00         100.00
355             19.37             123.85                  -10.00          100.00               -10.00         100.00




Frequency Coordination and Interference Analysis Report                02/01/2013            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.




Timothy O. Crutcher
Frequency Planner
COMSEARCH
19700 Janelia Farm Boulevard
Ashburn, VA 20147


DATED: February 1, 2013




Frequency Coordination and Interference Analysis Report   02/01/2013   Page 10 of 10



Document Created: 2013-02-01 10:58:53
Document Modified: 2013-02-01 10:58:53

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