Attachment Coordination report

This document pretains to SES-MOD-20180628-01619 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2018062801619_1424265

FREQUENCY COORDINATION AND INTERFERENCE
            ANALYSIS REPORT


                        Prepared for
          Comcast of California/MD/PA/VA/WV, LLC
                     FORT BRAGG, CA
                  Satellite Earth Station




                        Prepared By:
                       COMSEARCH
                19700 Janelia Farm Boulevard
                    Ashburn, VA 20147
                       June 15, 2018


                                                      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                                             06/15/2018                        Page 2 of 20


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   06/15/2018         Page 3 of 20


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    06/15/2018         Page 4 of 20


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 06/15/2018.

        Company
        American Tower, LLC
        Pacific Bell Tel Com dba AT&T California




Frequency Coordination and Interference Analysis Report                 06/15/2018              Page 5 of 20


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            06/15/2018            Page 6 of 20


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

Date:                                    06/15/2018
Job Number:                              180615COMSGE32
Administrative Information
Status                                   ENGINEER PROPOSAL
Call Sign                                E3634
Licensee Code                            COMCAM
Licensee Name                            Comcast of California/MD/PA/VA/WV, LLC

Site Information                         FORT BRAGG, CA
Venue Name
Latitude (NAD 83)                        39° 27' 52.3" N
Longitude (NAD 83)                       123° 45' 31.0" W
Climate Zone                             A
Rain Zone                                3
Ground Elevation (AMSL)                  222.63 m / 730.42 ft

Link Information
Satellite Type                           Geostationary
Mode                                     RO - Receive-Only
Modulation                               DIGITAL
Satellite Arc                            70° W to 140° West Longitude
Azimuth Range                            115.0° to 204.6°
Corresponding Elevation Angles           18.9° / 41.3°
Antenna Centerline (AGL)                 4.57 m / 15.0 ft

Antenna Information                            Receive - P40381
Manufacturer                                   Patriot
Model                                          3.8 meter
Gain / Diameter                                42.0 dBi / 3.8 m
3-dB / 15-dB Beamwidth                         1.40° / 2.80°

Interference Objectives:    Long Term          -156.0 dBW/MHz        20%
                            Short Term         -146.0 dBW/MHz        0.01%
Frequency Information                          Receive 4.0 GHz
Emission / Frequency Range (MHz)               36M0G7W / 3700.0 - 4200.0


Max Great Circle Coordination Distance         345.8 km / 214.8 mi
Precipitation Scatter Contour Radius           370.3 km / 230.0 mi




Frequency Coordination and Interference Analysis Report                      06/15/2018        Page 7 of 20


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



Coordination Values             FORT BRAGG, CA
Licensee Name                     Comcast of California/MD/PA/VA/WV, LLC
Latitude (NAD 83)                 39° 27' 52.3" N
Longitude (NAD 83)                123° 45' 31.0" W
Ground Elevation (AMSL)           222.63 m / 730.42 ft
Antenna Centerline (AGL)          4.57 m / 15.0 ft
Antenna Model                     Patriot 3.8 meter
Antenna Mode                             Receive 4.0 GHz
Interference Objectives: Long Term       -156.0 dBW/MHz 20%
                         Short Term      -146.0 dBW/MHz 0.01%

                                                              Receive 4.0 GHz
               Horizon            Antenna                 Horizon        Coordination
Azimuth (°)    Elevation (°)      Discrimination (°)      Gain (dBi)     Distance (km)
 0              0.00              113.55                   -9.90          285.92
 5              0.00              108.86                   -9.90          285.92
 10             0.00              104.15                   -9.90          285.92
 15             0.00               99.44                   -9.90          285.92
 20             0.00               94.71                   -9.90          285.92
 25             0.00               89.98                   -9.90          285.92
 30             0.64               85.24                   -9.90          241.54
 35             0.62               80.49                   -9.90          242.98
 40             0.48               75.77                   -9.90          253.15
 45             0.83               71.01                   -9.90          230.26
 50             0.74               66.31                   -9.90          235.61
 55             0.67               61.63                   -9.90          239.48
 60             1.04               56.90                   -9.90          219.59
 65             1.12               52.25                   -9.90          217.01
 70             0.80               47.76                   -9.45          234.23
 75             1.31               43.09                   -8.52          218.23
 80             1.59               38.54                   -7.61          214.28
 85             0.93               34.53                   -6.71          242.16
 90             0.61               30.62                   -5.15          272.35
 95             0.95               26.63                   -3.55          260.72
100             1.06               23.16                   -2.16          264.37
105             0.40               20.96                   -1.29          321.08
110             0.97               18.61                   -0.07          283.19
115             0.63               18.29                    0.12          308.20
120             0.34               19.23                   -0.44          334.33
125             0.00               21.33                   -1.43          345.75
130             0.00               23.99                   -2.50          337.83
135             0.00               27.20                   -3.78          328.45
140             0.00               30.32                   -5.03          319.48
145             0.00               33.24                   -6.20          310.62
150             0.00               35.93                   -7.09          304.50
155             0.00               38.32                   -7.56          301.24
160             0.00               40.39                   -7.98          298.47
165             0.00               42.06                   -8.31          296.24
170             0.00               43.30                   -8.56          294.60
175             0.00               44.06                   -8.71          293.60
180             0.00               44.32                   -8.76          293.26
185             0.00               44.06                   -8.71          293.60




Frequency Coordination and Interference Analysis Report                06/15/2018        Page 8 of 20


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



Coordination Values             FORT BRAGG, CA
Licensee Name                     Comcast of California/MD/PA/VA/WV, LLC
Latitude (NAD 83)                 39° 27' 52.3" N
Longitude (NAD 83)                123° 45' 31.0" W
Ground Elevation (AMSL)           222.63 m / 730.42 ft
Antenna Centerline (AGL)          4.57 m / 15.0 ft
Antenna Model                     Patriot 3.8 meter
Antenna Mode                             Receive 4.0 GHz
Interference Objectives: Long Term       -156.0 dBW/MHz 20%
                         Short Term      -146.0 dBW/MHz 0.01%

                                                              Receive 4.0 GHz
               Horizon            Antenna                 Horizon        Coordination
Azimuth (°)    Elevation (°)      Discrimination (°)      Gain (dBi)     Distance (km)
190             0.00               43.30                   -8.56          294.60
195             0.00               42.22                   -8.34          296.04
200             0.00               41.52                   -8.20          296.96
205             0.00               41.31                   -8.16          297.24
210             0.00               41.60                   -8.22          296.86
215             0.00               42.37                   -8.37          295.84
220             0.00               43.59                   -8.62          294.22
225             0.00               45.24                   -8.95          292.06
230             0.00               47.26                   -9.35          289.43
235             0.00               49.61                   -9.82          286.41
240             0.00               52.24                   -9.90          285.92
245             0.00               55.10                   -9.90          285.92
250             0.00               58.16                   -9.90          285.92
255             0.00               61.38                   -9.90          285.92
260             0.00               64.74                   -9.90          285.92
265             0.00               68.21                   -9.90          285.92
270             0.00               71.77                   -9.90          285.92
275             0.00               75.40                   -9.90          285.92
280             0.00               79.08                   -9.90          285.92
285             0.00               82.79                   -9.90          285.92
290             0.00               86.54                   -9.90          285.92
295             0.00               90.29                   -9.90          285.92
300             0.00               94.04                   -9.90          285.92
305             0.00               97.78                   -9.90          285.92
310             0.00              101.50                   -9.90          285.92
315             0.00              105.17                   -9.90          285.92
320             0.00              108.79                   -9.90          285.92
325             0.00              112.33                   -9.90          285.92
330             0.00              115.78                   -9.90          285.92
335             0.00              119.12                   -9.90          285.92
340             0.00              122.32                   -9.90          285.92
345             0.00              125.36                   -9.90          285.92
350             0.00              122.84                   -9.90          285.92
355             0.00              118.21                   -9.90          285.92




Frequency Coordination and Interference Analysis Report                06/15/2018        Page 9 of 20


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




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: June 15, 2018




Frequency Coordination and Interference Analysis Report               06/15/2018   Page 10 of 20


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




   FREQUENCY COORDINATION AND INTERFERENCE
               ANALYSIS REPORT


                                            Prepared for
                              Comcast of California/MD/PA/VA/WV, LLC
                                         FORT BRAGG, CA
                                      Satellite Earth Station




                                             Prepared By:
                                            COMSEARCH
                                     19700 Janelia Farm Boulevard
                                         Ashburn, VA 20147
                                            June 15, 2018




Frequency Coordination and Interference Analysis Report             06/15/2018   Page 11 of 20


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




                                                      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                                             06/15/2018                      Page 12 of 20


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




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             06/15/2018   Page 13 of 20


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




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             06/15/2018   Page 14 of 20


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




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 06/15/2018.

        Company
        American Tower, LLC
        Pacific Bell Tel Com dba AT&T California




Frequency Coordination and Interference Analysis Report                 06/15/2018             Page 15 of 20


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




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             06/15/2018          Page 16 of 20


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

Date:                                    06/15/2018
Job Number:                              180615COMSGE32
Administrative Information
Status                                   ENGINEER PROPOSAL
Call Sign                                E3634
Licensee Code                            COMCAM
Licensee Name                            Comcast of California/MD/PA/VA/WV, LLC

Site Information                         FORT BRAGG, CA
Venue Name
Latitude (NAD 83)                        39° 27' 52.3" N
Longitude (NAD 83)                       123° 45' 31.0" W
Climate Zone                             A
Rain Zone                                3
Ground Elevation (AMSL)                  222.63 m / 730.42 ft

Link Information
Satellite Type                           Geostationary
Mode                                     RO - Receive-Only
Modulation                               DIGITAL
Satellite Arc                            70° W to 140° West Longitude
Azimuth Range                            115.0° to 204.6°
Corresponding Elevation Angles           18.9° / 41.3°
Antenna Centerline (AGL)                 4.57 m / 15.0 ft

Antenna Information                            Receive - P40381
Manufacturer                                   PRODELIN CORPORATION
Model                                          1380
Gain / Diameter                                42.1 dBi / 3.8 m
3-dB / 15-dB Beamwidth                         1.40° / 2.80°

Interference Objectives:    Long Term          -156.0 dBW/MHz         20%
                            Short Term         -146.0 dBW/MHz         0.01%
Frequency Information                          Receive 4.0 GHz
Emission / Frequency Range (MHz)               36M0G7W / 3700.0 - 4200.0


Max Great Circle Coordination Distance         345.8 km / 214.8 mi
Precipitation Scatter Contour Radius           370.3 km / 230.0 mi




Frequency Coordination and Interference Analysis Report                       06/15/2018       Page 17 of 20


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



Coordination Values             FORT BRAGG, CA
Licensee Name                     Comcast of California/MD/PA/VA/WV, LLC
Latitude (NAD 83)                 39° 27' 52.3" N
Longitude (NAD 83)                123° 45' 31.0" W
Ground Elevation (AMSL)           222.63 m / 730.42 ft
Antenna Centerline (AGL)          4.57 m / 15.0 ft
Antenna Model                     PRODELIN CORPORATION 1380
Antenna Mode                             Receive 4.0 GHz
Interference Objectives: Long Term       -156.0 dBW/MHz 20%
                         Short Term      -146.0 dBW/MHz 0.01%

                                                              Receive 4.0 GHz
               Horizon            Antenna                 Horizon        Coordination
Azimuth (°)    Elevation (°)      Discrimination (°)      Gain (dBi)     Distance (km)
 0              0.00              113.55                   -9.90          285.92
 5              0.00              108.86                   -9.90          285.92
 10             0.00              104.15                   -9.90          285.92
 15             0.00               99.44                   -9.90          285.92
 20             0.00               94.71                   -9.90          285.92
 25             0.00               89.98                   -9.90          285.92
 30             0.64               85.24                   -9.90          241.54
 35             0.62               80.49                   -9.90          242.98
 40             0.48               75.77                   -9.90          253.15
 45             0.83               71.01                   -9.90          230.26
 50             0.74               66.31                   -9.90          235.61
 55             0.67               61.63                   -9.90          239.48
 60             1.04               56.90                   -9.90          219.59
 65             1.12               52.25                   -9.90          217.01
 70             0.80               47.76                   -9.45          234.23
 75             1.31               43.09                   -8.52          218.23
 80             1.59               38.54                   -7.61          214.28
 85             0.93               34.53                   -6.71          242.16
 90             0.61               30.62                   -5.15          272.35
 95             0.95               26.63                   -3.55          260.72
100             1.06               23.16                   -2.16          264.37
105             0.40               20.96                   -1.29          321.08
110             0.97               18.61                   -0.07          283.19
115             0.63               18.29                    0.12          308.20
120             0.34               19.23                   -0.44          334.33
125             0.00               21.33                   -1.43          345.75
130             0.00               23.99                   -2.50          337.83
135             0.00               27.20                   -3.78          328.45
140             0.00               30.32                   -5.03          319.48
145             0.00               33.24                   -6.20          310.62
150             0.00               35.93                   -7.09          304.50
155             0.00               38.32                   -7.56          301.24
160             0.00               40.39                   -7.98          298.47
165             0.00               42.06                   -8.31          296.24
170             0.00               43.30                   -8.56          294.60
175             0.00               44.06                   -8.71          293.60
180             0.00               44.32                   -8.76          293.26
185             0.00               44.06                   -8.71          293.60




Frequency Coordination and Interference Analysis Report                06/15/2018        Page 18 of 20


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



Coordination Values             FORT BRAGG, CA
Licensee Name                     Comcast of California/MD/PA/VA/WV, LLC
Latitude (NAD 83)                 39° 27' 52.3" N
Longitude (NAD 83)                123° 45' 31.0" W
Ground Elevation (AMSL)           222.63 m / 730.42 ft
Antenna Centerline (AGL)          4.57 m / 15.0 ft
Antenna Model                     PRODELIN CORPORATION 1380
Antenna Mode                             Receive 4.0 GHz
Interference Objectives: Long Term       -156.0 dBW/MHz 20%
                         Short Term      -146.0 dBW/MHz 0.01%

                                                              Receive 4.0 GHz
               Horizon            Antenna                 Horizon        Coordination
Azimuth (°)    Elevation (°)      Discrimination (°)      Gain (dBi)     Distance (km)
190             0.00               43.30                   -8.56          294.60
195             0.00               42.22                   -8.34          296.04
200             0.00               41.52                   -8.20          296.96
205             0.00               41.31                   -8.16          297.24
210             0.00               41.60                   -8.22          296.86
215             0.00               42.37                   -8.37          295.84
220             0.00               43.59                   -8.62          294.22
225             0.00               45.24                   -8.95          292.06
230             0.00               47.26                   -9.35          289.43
235             0.00               49.61                   -9.82          286.41
240             0.00               52.24                   -9.90          285.92
245             0.00               55.10                   -9.90          285.92
250             0.00               58.16                   -9.90          285.92
255             0.00               61.38                   -9.90          285.92
260             0.00               64.74                   -9.90          285.92
265             0.00               68.21                   -9.90          285.92
270             0.00               71.77                   -9.90          285.92
275             0.00               75.40                   -9.90          285.92
280             0.00               79.08                   -9.90          285.92
285             0.00               82.79                   -9.90          285.92
290             0.00               86.54                   -9.90          285.92
295             0.00               90.29                   -9.90          285.92
300             0.00               94.04                   -9.90          285.92
305             0.00               97.78                   -9.90          285.92
310             0.00              101.50                   -9.90          285.92
315             0.00              105.17                   -9.90          285.92
320             0.00              108.79                   -9.90          285.92
325             0.00              112.33                   -9.90          285.92
330             0.00              115.78                   -9.90          285.92
335             0.00              119.12                   -9.90          285.92
340             0.00              122.32                   -9.90          285.92
345             0.00              125.36                   -9.90          285.92
350             0.00              122.84                   -9.90          285.92
355             0.00              118.21                   -9.90          285.92




Frequency Coordination and Interference Analysis Report                06/15/2018        Page 19 of 20


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: June 15, 2018




Frequency Coordination and Interference Analysis Report   06/15/2018   Page 20 of 20



Document Created: 2018-06-15 17:24:51
Document Modified: 2018-06-15 17:24:51

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