Attachment Exhibit A

This document pretains to SES-LIC-20111103-01313 for License on a Satellite Earth Station filing.

IBFS_SESLIC2011110301313_923333

FREQUENCY COORDINATION AND INTERFERENCE
            ANALYSIS REPORT


                      Prepared for

             Educational Media Foundation
                  Rocklin, California

                 Satellite Earth Station




                     Prepared By:
                    COMSEARCH
             19700 Janelia Farm Boulevard
                 Ashburn, VA 20147
                   October 28, 2011


                                                     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                                             10/28/2011                       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, based
upon the restrictions noted in the Summary of Results (Section 2).




Frequency Coordination and Interference Analysis Report   10/28/2011         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 most cases.

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 losses exist to negate
harmful interference from occurring with the proposed transmit-receive earth station.
Further, the transmit band will be limited to frequencies 5925.0 to 5958.5 MHz, 5991.0 to
6028.0 MHz, 6040.5 to 6210.0 MHz, and 6243.0 to 6425.0 MHz.


       Company

       MCI Communications Services Inc.
       Sacramento Municipal Utility District



No other carriers reported potential interference cases.




Frequency Coordination and Interference Analysis Report    10/28/2011         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 August 15,
2011.


        Company

        AT&T California
        CALIFORNIA RSA NO. 3 LIMITED PARTNERSHIP
        CBS Broadcasting Inc
        California, State of
        EAST BAY MUNICIPAL UTILITY DISTRICT
        GTE Mobilnet of California LTD Partnersh
        ICG Telecom Group, Inc. - Debtor in poss
        KQED INC
        M.U.T. Licensing, LLC
        MCI Communications Services Inc.
        METROPOLITAN AREA NETWORKS, INC.
        Marin County of California
        New Cingular Wireless PCS LLC - N CAL
        Nextel of California Inc.
        Open Range Communications
        Pacific Gas and Electric Company
        Placer, County of
        Sacramento County
        Sacramento Municipal Utility District
        Sacramento Valley Limited Partnership
        San Joaquin County
        Solano County Communications Division
        Union Pacific Railroad Company
        Volcano Telephone Company
        Western Technical Services
        Yolo Emergency Communications Agency
        Yolo, County of




Frequency Coordination and Interference Analysis Report              10/28/2011              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            10/28/2011            Page 6 of 10


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

Date:                                    10/28/2011
Job Number:                              110815COMSJC02
Administrative Information
Status                                   ENGINEER PROPOSAL
Call Sign
Licensee Code                            EDUMED
Licensee Name                            Educational Media Foundation
Site Information                         ROCKLIN, CALIFORNIA
Venue Name
Latitude (NAD 83)                        38° 48' 56.3" N
Longitude (NAD 83)                       121° 16' 40.8" W
Climate Zone                             A
Rain Zone                                3
Ground Elevation (AMSL)                  61.57 m / 202.0 ft
Link Information
Satellite Type                           Geostationary
Mode                                     TR - Transmit-Receive
Modulation                               Digital
Satellite Arc                            83° W to 125° West Longitude
Azimuth Range                            128.5° to 185.9°
Corresponding Elevation Angles           30.2° / 44.9°
Antenna Centerline (AGL)                 4.88 m / 16.0 ft
Antenna Information                            Receive                                Transmit
Manufacturer                                   Andrew Corporation                     Andrew Corporation
Model                                          7.3 Meter                              7.3 Meter
Gain / Diameter                                48.5 dBi / 7.3 m                       51.8 dBi / 7.3 m
3-dB / 15-dB Beamwidth                         0.66° / 1.22°                          0.44° / 0.88°

Max Available RF Power        (dBW/4 kHz)                                             -25.7
                              (dBW/MHz)                                                -1.7

Maximum EIRP                  (dBW/4 kHz)                                             26.1
                              (dBW/MHz)                                               50.1


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)               3M40G7W / 3700.0 - 4200.0              3M40G7W / 5925.0 - 5958.5
                                                                                      3M40G7W / 5991.0 - 6028.0
                                                                                      3M40G7W / 6040.5 - 6210.0
                                                                                      3M40G7W / 6243.0 - 6425.0


Max Great Circle Coordination Distance         291.1 km / 180.9 mi                    105.0 km / 65.2 mi
Precipitation Scatter Contour Radius           360.5 km / 224.0 mi                    100.0 km / 62.1 mi




Frequency Coordination and Interference Analysis Report                      10/28/2011            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              ROCKLIN, CA
Licensee Name                     Educational Media Foundation
Latitude (NAD 83)                 38° 48' 56.3" N
Longitude (NAD 83)                121° 16' 40.8" W
Ground Elevation (AMSL)           61.57 m / 202.0 ft
Antenna Centerline (AGL)          4.88 m / 16.0 ft
Antenna Model                     Andrew Corporation 7.3 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                                                            -25.7 (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              0.54              122.72                  -10.00          247.09                -10.00         100.00
 5              0.65              118.66                  -10.00          240.30                -10.00         100.00
10              0.74              114.52                  -10.00          234.86                -10.00         100.00
15              0.83              110.30                  -10.00          229.36                -10.00         100.00
20              0.91              106.03                  -10.00          225.12                -10.00         100.00
25              1.04              101.73                  -10.00          219.20                -10.00         100.00
30              1.12              97.39                   -10.00          216.46                -10.00         100.00
 35             0.95              93.02                   -10.00          223.00                -10.00         100.00
 40             1.04              88.66                   -10.00          219.16                -10.00         100.00
 45             1.15              84.29                   -10.00          215.65                -10.00         100.00
 50             1.12              79.93                   -10.00          216.61                -10.00         100.00
 55             1.28              75.57                   -10.00          211.77                -10.00         100.00
 60             1.25              71.26                   -10.00          212.79                -10.00         100.00
 65             1.26              66.98                   -10.00          212.49                -10.00         100.00
 70             1.19              62.78                   -10.00          214.42                -10.00         100.00
 75             1.28              58.59                   -10.00          211.86                -10.00         100.00
 80             1.20              54.55                   -10.00          214.19                -10.00         100.00
 85             1.28              50.56                   -10.00          211.84                -10.00         100.00
 90             1.23              46.76                    -9.75          214.49                 -9.75         100.00
 95             1.21              43.14                    -8.87          219.50                 -8.87         100.00
100             1.21              39.74                    -7.98          223.94                 -7.98         100.00
105             1.18              36.66                    -7.11          229.74                 -7.11         100.00
110             1.16              33.98                    -6.28          235.19                 -6.28         100.00
115             1.07              31.84                    -5.58          242.44                 -5.58         100.00
120             0.98              30.32                    -5.04          249.36                 -5.04         100.00
125             0.92              29.47                    -4.73          255.18                 -4.73         100.00
130             0.86              29.37                    -4.70          258.69                 -4.70         100.00
135             0.76              30.10                    -4.96          263.94                 -4.96         100.00
140             0.64              31.54                    -5.47          268.11                 -5.47         100.00
145             0.51              33.62                    -6.16          273.13                 -6.16         100.00
150             0.42              36.15                    -6.95          277.41                 -6.95         100.00
155             0.42              38.58                    -7.66          272.82                 -7.66         100.00
160             0.43              40.65                    -8.23          268.44                 -8.23         100.00
165             0.30              42.46                    -8.70          280.54                 -8.70         100.00
170             0.00              44.01                    -9.09          291.14                 -9.09         104.99
175             0.00              44.79                    -9.28          289.90                 -9.28         104.52
180             0.00              45.05                    -9.34          289.49                 -9.34         104.36
185             0.00              44.89                    -9.30          289.74                 -9.30         104.46



Frequency Coordination and Interference Analysis Report                10/28/2011             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              ROCKLIN, CA
Licensee Name                     Educational Media Foundation
Latitude (NAD 83)                 38° 48' 56.3" N
Longitude (NAD 83)                121° 16' 40.8" W
Ground Elevation (AMSL)           61.57 m / 202.0 ft
Antenna Centerline (AGL)          4.88 m / 16.0 ft
Antenna Model                     Andrew Corporation 7.3 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                                                            -25.7 (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             0.00              45.03                    -9.34          289.53                 -9.34         104.38
195             0.00              45.60                    -9.47          288.65                 -9.47         104.04
200             0.00              46.59                    -9.71          287.15                 -9.71         103.47
205             0.00              47.96                   -10.00          285.28                -10.00         102.74
210             0.00              49.69                   -10.00          285.28                -10.00         102.74
215             0.00              51.74                   -10.00          285.28                -10.00         102.74
220             0.00              54.07                   -10.00          285.28                -10.00         102.74
225             0.00              56.63                   -10.00          285.28                -10.00         102.74
230             0.00              59.40                   -10.00          285.28                -10.00         102.74
235             0.00              62.35                   -10.00          285.28                -10.00         102.74
240             0.00              65.44                   -10.00          285.28                -10.00         102.74
245             0.00              68.65                   -10.00          285.28                -10.00         102.74
250             0.00              71.96                   -10.00          285.28                -10.00         102.74
255             0.00              75.34                   -10.00          285.28                -10.00         102.74
260             0.00              78.79                   -10.00          285.28                -10.00         102.74
265             0.00              82.28                   -10.00          285.28                -10.00         102.74
270             0.00              85.81                   -10.00          285.28                -10.00         102.74
275             0.00              89.35                   -10.00          285.28                -10.00         102.74
280             0.00              92.89                   -10.00          285.28                -10.00         102.74
285             0.00              96.42                   -10.00          285.28                -10.00         102.74
290             0.00              99.92                   -10.00          285.28                -10.00         102.74
295             0.00              103.39                  -10.00          285.28                -10.00         102.74
300             0.00              106.80                  -10.00          285.28                -10.00         102.74
305             0.00              110.14                  -10.00          285.28                -10.00         102.74
310             0.00              113.39                  -10.00          285.28                -10.00         102.74
315             0.00              116.53                  -10.00          285.28                -10.00         102.74
320             0.00              119.53                  -10.00          285.28                -10.00         102.74
325             0.00              122.37                  -10.00          285.28                -10.00         102.74
330             0.00              125.01                  -10.00          285.28                -10.00         102.74
335             0.00              127.43                  -10.00          285.28                -10.00         102.74
340             0.00              129.59                  -10.00          285.28                -10.00         102.74
345             0.00              131.44                  -10.00          285.28                -10.00         102.74
350             0.27              130.44                  -10.00          276.80                -10.00         100.00
355             0.40              126.65                  -10.00          261.12                -10.00         100.00




Frequency Coordination and Interference Analysis Report                10/28/2011             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.




Jeffrey E. Cowles
Engineer III, Telecommunications
COMSEARCH
19700 Janelia Farm Boulevard
Ashburn, VA 20147


DATED: October 28, 2011




Frequency Coordination and Interference Analysis Report   10/28/2011   Page 10 of 10



Document Created: 2019-04-15 03:50:02
Document Modified: 2019-04-15 03:50:02

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