Attachment Coordination

This document pretains to SES-LIC-20190228-00464 for License on a Satellite Earth Station filing.

IBFS_SESLIC2019022800464_1631421

FREQUENCY COORDINATION AND INTERFERENCE
            ANALYSIS REPORT


                     Prepared for
                 Pacific Public Media
                    TACOMA, WA
                Satellite Earth Station




                     Prepared By:
                    COMSEARCH
             19700 Janelia Farm Boulevard
                 Ashburn, VA 20147
                  February 27, 2019


                                                      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                                             02/27/2019                        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.
Operation will be restricted to the bandwidth shown in Section 4 of this report.




Frequency Coordination and Interference Analysis Report   02/27/2019         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. Existing shielding by buildings or other structures were
included OH loss calculations

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 and frequency
separation are considered on the interfering paths, sufficient blockage or frequency
separation exists to negate harmful interference from occurring with the proposed
transmit-only earth station.


       Company
       City of Tacoma / Tacoma Public Utilities
       King, County of
       Northwest Pipeline GP
       Puget Sound Energy, Inc
       Puyallup, City of
       Pierce County
       Verizon Wireless (VAW) LLC - (WA)


No other carriers reported potential interference cases.




Frequency Coordination and Interference Analysis Report    02/27/2019         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
        Accel Net, Inc.
        Bearclaw, LLC
        Boeing Company
        Cencom - Kitsap 911
        CenturyTel of Cowiche, Inc.
        CenturyTel of Washington, Inc.
        City of Tacoma / Tacoma Public Utilities
        Community Transit Snohomish County PTBA
        Eastside Public Safety Com Agency
        Frontier Communications Northwest Inc.
        Grays Harbor, County of
        Inland Cellular LLC
        King County DOT Metro Transit Division
        King, County of
        McDaniel Cellular Telephone Company
        New Cingular Wireless PCS LLC-Washington
        Noel Communications, Inc.
        Northwest Pipeline GP
        Olympic Wireless, LLC
        Pick Two LLC
        Pierce County
        Port of Seattle
        Public Util Dist. #1 of Snohomish County
        Puget Sound Energy, Inc
        Puyallup, City of
        Qwest Corporation
        Seattle City Light
        Seattle SMSA Limited Partnership
        Seattle, City of
        Silke Communications, Inc.
        Skagit 911
        Snohomish County Emergency Radio System
        Startouch, Inc.
        Thurston 9-1-1 Communications
        Tribune Broadcasting Seattle, LLC
        USCOC of Washington 4 Inc.
        Verizon Wireless (VAW) LLC - (WA)
        Washington State Military Dept, Emerg. M
        Washington State of Dept of Transportat
        Washington, State of
        Whidbey Telephone Co
        Yakima MSA Limited Partnership




Frequency Coordination and Interference Analysis Report                 02/27/2019       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            02/27/2019            Page 6 of 10


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

Date:                                    02/27/2019
Job Number:                              190227COMSTC10
Administrative Information
Licensee Code                            FRI885
Licensee Name                            Pacific Public Media
Site Information                         TACOMA, WA
Latitude (NAD 83)                        47° 15' 15.3" N
Longitude (NAD 83)                       122° 26' 26.6" W
Climate Zone                             A
Rain Zone                                3
Ground Elevation (AMSL)                  41.15 m / 135.0 ft
Link Information
Satellite Type                           Geostationary
Mode                                     TO - Transmit-Only
Modulation                               Digital
Satellite Arc                            58° W to 139° West Longitude
Azimuth Range                            109.4° to 202.0°
Corresponding Elevation Angles           8.4° / 33.3°
Antenna Centerline (AGL)                 16.15 m / 53.0 ft
Antenna Information                            Transmit
Manufacturer                                   PRODELIN CORPORATION
Model                                          1385
Gain / Diameter                                46.0 dBi / 3.8 m
3-dB / 15-dB Beamwidth                         1.00° / 2.00°

                                             30K0G7W - 500KG7W
Max Available RF Power        (dBW/4 kHz)      -14.0    -14.0
                              (dBW/MHz)        10.0      10.0

Maximum EIRP                  (dBW/4 kHz)      32.0       32.0
                              (dBW/MHz)        32.0       32.0
                              (dBW)            40.75      52.97

Interference Objectives:    Long Term          -154.0 dBW/4 kHz 20%
                            Short Term         -131.0 dBW/4 kHz 0.0025%

Frequency Information                          Transmit 6.1 GHz
Emission / Frequency Range (MHz)               30K0G7W - 500KG7W / 5925.0 - 6078.47 Band Edges
                                               30K0G7W - 500KG7W / 6088.67 - 6137.0 Band Edges
                                               30K0G7W - 500KG7W / 6168.0 - 6211.0 Band Edges
                                               30K0G7W - 500KG7W / 6242.0 - 6300.0 Band Edges
                                               30K0G7W - 500KG7W / 6406.0 - 6425.0 Band Edges


Max Great Circle Coordination Distance         196.5 km / 122.1 mi
Precipitation Scatter Contour Radius           100.0 km / 62.1 mi




Frequency Coordination and Interference Analysis Report                     02/27/2019           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             TACOMA, WA
Licensee Name                     Pacific Public Media
Latitude (NAD 83)                 47° 15' 15.3" N
Longitude (NAD 83)                122° 26' 26.6" W
Ground Elevation (AMSL)           41.15 m / 135.0 ft
Antenna Centerline (AGL)          16.15 m / 53.0 ft
Antenna Mode                             Transmit 6.1 GHz
Interference Objectives: Long Term       -154.0 dBW/4 kHz 20%
                         Short Term      -131.0 dBW/4 kHz 0.0025%
Max Available RF Power                   -14.0 (dBW/4 kHz)

                                                              Transmit 6.1 GHz
               Horizon            Antenna                 Horizon        Coordination
Azimuth (°)    Elevation (°)      Discrimination (°)      Gain (dBi)     Distance (km)
 0              0.00              109.14                  -10.00          132.84
 5              0.00              104.20                  -10.00          132.84
 10             0.54               99.27                  -10.00          106.90
 15             0.82               94.32                  -10.00          100.00
 20             0.88               89.36                  -10.00          100.00
 25             0.90               84.40                  -10.00          100.00
 30             0.85               79.45                  -10.00          100.00
 35             0.93               74.49                  -10.00          100.00
 40             0.78               69.55                  -10.00          100.00
 45             0.67               64.61                  -10.00          100.87
 50             0.80               59.65                  -10.00          100.00
 55             0.77               54.72                  -10.00          100.00
 60             0.68               49.80                   -9.96          100.45
 65             0.70               44.88                   -8.98          102.40
 70             0.62               40.00                   -8.00          108.32
 75             0.53               35.14                   -7.03          115.16
 80             0.52               30.31                   -5.12          120.87
 85             0.53               25.53                   -3.21          126.00
 90             0.30               20.93                   -1.37          148.70
 95             0.00               16.60                    1.72          172.29
100             0.00               12.56                    4.44          182.82
105             0.00                9.48                    7.52          194.69
110             0.00                8.45                    8.00          196.51
115             0.00               10.13                    6.87          192.18
120             0.00               13.21                    3.79          180.33
125             0.00               16.23                    2.01          173.43
130             0.00               19.15                   -0.32          162.77
135             0.33               21.64                   -1.65          144.40
140             0.84               23.81                   -2.52          113.65
145             0.71               26.30                   -3.52          116.45
150             0.60               28.57                   -4.43          119.05
155             0.73               30.35                   -5.14          111.34
160             0.79               31.90                   -5.76          106.65
165             0.71               33.27                   -6.31          108.94
170             0.80               34.13                   -6.65          103.95
175             0.89               34.61                   -6.84          100.00
180             0.83               34.86                   -6.94          101.70
185             0.84               34.66                   -6.86          101.59




Frequency Coordination and Interference Analysis Report                02/27/2019        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             TACOMA, WA
Licensee Name                     Pacific Public Media
Latitude (NAD 83)                 47° 15' 15.3" N
Longitude (NAD 83)                122° 26' 26.6" W
Ground Elevation (AMSL)           41.15 m / 135.0 ft
Antenna Centerline (AGL)          16.15 m / 53.0 ft
Antenna Mode                             Transmit 6.1 GHz
Interference Objectives: Long Term       -154.0 dBW/4 kHz 20%
                         Short Term      -131.0 dBW/4 kHz 0.0025%
Max Available RF Power                   -14.0 (dBW/4 kHz)

                                                              Transmit 6.1 GHz
               Horizon            Antenna                 Horizon        Coordination
Azimuth (°)    Elevation (°)      Discrimination (°)      Gain (dBi)     Distance (km)
190             1.24               33.70                   -6.48          100.00
195             1.84               32.19                   -5.87          100.00
200             2.17               31.22                   -5.49          100.00
205             2.44               31.02                   -5.41          100.00
210             2.72               31.53                   -5.61          100.00
215             2.82               32.90                   -6.16          100.00
220             2.99               34.81                   -6.92          100.00
225             3.17               37.23                   -7.45          100.00
230             3.34               40.09                   -8.02          100.00
235             3.52               43.28                   -8.66          100.00
240             3.69               46.74                   -9.35          100.00
245             3.80               50.45                  -10.00          100.00
250             3.93               54.31                  -10.00          100.00
255             4.01               58.32                  -10.00          100.00
260             3.99               62.45                  -10.00          100.00
265             4.02               66.65                  -10.00          100.00
270             4.10               70.88                  -10.00          100.00
275             4.01               75.20                  -10.00          100.00
280             4.06               79.52                  -10.00          100.00
285             4.10               83.86                  -10.00          100.00
290             3.99               88.22                  -10.00          100.00
295             3.95               92.58                  -10.00          100.00
300             3.86               96.92                  -10.00          100.00
305             3.63              101.23                  -10.00          100.00
310             3.46              105.51                  -10.00          100.00
315             3.25              109.73                  -10.00          100.00
320             3.01              113.88                  -10.00          100.00
325             2.77              117.94                  -10.00          100.00
330             2.43              121.86                  -10.00          100.00
335             1.96              125.58                  -10.00          100.00
340             1.36              129.00                  -10.00          100.00
345             0.60              123.99                  -10.00          103.93
350             0.00              119.01                  -10.00          132.84
355             0.00              114.07                  -10.00          132.84




Frequency Coordination and Interference Analysis Report                02/27/2019        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 27, 2019




Frequency Coordination and Interference Analysis Report   02/27/2019   Page 10 of 10



Document Created: 2019-02-27 15:42:06
Document Modified: 2019-02-27 15:42:06

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