Attachment A

This document pretains to SES-AMD-20110323-00336 for Amended Filing on a Satellite Earth Station filing.

IBFS_SESAMD2011032300336_878129

FREQUENCY COORDINATION AND INTERFERENCE
            ANALYSIS REPORT


                     Prepared for
             Computer Sciences Raytheon
                CAPE CANAVER, FL
                Satellite Earth Station




                     Prepared By:
                    COMSEARCH
             19700 Janelia Farm Boulevard
                 Ashburn, VA 20147
                 December 01, 2010


                                                      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                                             12/01/2010                        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   12/01/2010         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 every case.

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 are considered
on the interfering paths, sufficient blockage exists to negate harmful interference from
occurring with the proposed transmit-receive earth station.


       Company

       ALLTEL Wireless Holdings, LLC.
       Central Florida Cellular Telephone Co
       New Cingular Wireless PCS LLC - S FL
       Orlando SMSA Ltd Partnership
       Verizon Wireless Personal Comm, LP(S FL)


No other carriers reported potential interference cases.




Frequency Coordination and Interference Analysis Report    12/01/2010         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 09/28/2010.

        Company
        ALLTEL Wireless Holdings, LLC.
        Central Florida Cellular Telephone Co
        FLORIDA POWER AND LIGHT COMPANY
        Florida RSA No. 2B (Indian River) LP
        Harris Corporation - Orlando, FL
        Hernando County Board of Co Commissioner
        Hillsborough County Sheriff's Office
        Hillsborough County Tax Collector
        Lake, County of
        METROPOLITAN AREA NETWORKS, INC.
        New Cingular Wireless PCS LLC - S FL
        Orlando SMSA Ltd Partnership
        PINELLAS COUNTY
        POLK, COUNTY OF
        Saint Lucie, County of
        South Florida Water Management District
        Sumter Electric Cooperative, Inc.
        Tampa Electric Company
        Verizon Wireless Personal Comm, LP(S FL)
        Villages Public Saftey




Frequency Coordination and Interference Analysis Report                 12/01/2010              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            12/01/2010            Page 6 of 10


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

Date:                                    12/01/2010
Job Number:                              100928COMSTC02
Administrative Information
Licensee Name                            Computer Sciences Raytheon
Site Information                         CAPE CANAVER, FL
Venue Name                               WEST TERMIMAL
Latitude (NAD 83)                        28° 25' 51.7" N
Longitude (NAD 83)                       80° 35' 42.5" W
Climate Zone                             B
Rain Zone                                1
Ground Elevation (AMSL)                  2.6 m / 8.5 ft
Link Information
Satellite Type                           Geostationary
Mode                                     TR - Transmit-Receive
Modulation                               Digital
Satellite Arc                            18° W to 143° West Longitude
Azimuth Range                            103.9° to 256.0°
Corresponding Elevation Angles           15.5° / 15.7°
Antenna Centerline (AGL)                 9.0 m / 29.5 ft
Antenna Information                            Receive                                 Transmit
Manufacturer                                   VERTEX RSI                              VERTEX RSI
Gain / Diameter                                55.1 dBi / 16.4 m                       59.0 dBi / 16.4 m
3-dB / 15-dB Beamwidth                         0.30° / 0.60°                           0.20° / 0.40°
                                                                                     51K2G7W - 36M0G7W
Max Available RF Power        (dBW/4 kHz)                                              -13.52     -13.52
                              (dBW/MHz)                                                 10.48      10.48

Maximum EIRP                  (dBW/4 kHz)                                              45.48        45.48
                              (dBW/MHz)                                                69.48        59.48
                              (dBW)                                                    56.55        85.02


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)               51K2G7W - 36M0G7W / 3700.0 - 4200.0     51K2G7W - 36M0G7W / 5925.0 - 6425.0


Max Great Circle Coordination Distance         594.6 km / 369.4 mi                     209.0 km / 129.8 mi
Precipitation Scatter Contour Radius           596.7 km / 370.7 mi                     100.0 km / 62.1 mi




Frequency Coordination and Interference Analysis Report                      12/01/2010               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             CAPE CANAVER, FL
Licensee Name                     Computer Sciences Raytheon
Latitude (NAD 83)                 28° 25' 51.7" N
Longitude (NAD 83)                80° 35' 42.5" W
Ground Elevation (AMSL)           2.6 m / 8.5 ft
Antenna Centerline (AGL)          9.0 m / 29.5 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                                                            -13.5 (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              0.00              103.35                  -10.00          412.20                -10.00         148.04
 5              0.00               98.54                  -10.00          412.20                -10.00         148.04
10              0.00               93.73                  -10.00          412.20                -10.00         148.04
15              0.00               88.91                  -10.00          412.20                -10.00         148.04
20              0.00               84.09                  -10.00          412.20                -10.00         148.04
25              0.00               79.28                  -10.00          412.20                -10.00         148.04
30              0.00               74.47                  -10.00          412.20                -10.00         148.04
35              0.00               69.67                  -10.00          412.20                -10.00         148.04
40              0.00               64.89                  -10.00          412.20                -10.00         148.04
45              0.00               60.12                  -10.00          412.20                -10.00         148.04
50              0.00               55.37                  -10.00          412.20                -10.00         148.04
55              0.00               50.66                  -10.00          412.20                -10.00         148.04
60              0.00               45.99                   -9.57          417.60                 -9.57         149.66
65              0.00               41.38                   -8.42          432.28                 -8.42         154.42
70              0.00               36.86                   -7.16          448.99                 -7.16         159.90
75              0.00               32.45                   -5.78          467.48                 -5.78         166.21
80              0.00               28.21                   -4.26          489.43                 -4.26         173.49
85              0.00               24.24                   -2.61          514.40                 -2.61         181.81
90              0.00               20.68                   -0.89          541.80                 -0.89         190.96
95              0.00               17.80                    0.74          568.95                  0.74         200.43
100             0.00               15.96                    1.92          589.44                  1.92         207.26
105             0.00               15.54                    2.22          594.59                  2.22         208.98
110             0.00               16.64                    1.47          581.55                  1.47         204.64
115             0.00               19.00                    0.03          556.99                  0.03         196.43
120             0.00               22.23                   -1.67          529.19                 -1.67         186.75
125             0.00               25.99                   -3.37          502.73                 -3.37         177.92
130             0.00               30.05                   -4.95          479.37                 -4.95         170.15
135             0.00               34.05                   -6.30          460.79                 -6.30         163.79
140             0.00               37.91                   -7.47          444.87                 -7.47         158.54
145             0.00               41.60                   -8.48          431.53                 -8.48         154.18
150             0.00               45.08                   -9.35          420.35                 -9.35         150.55
155             0.00               48.27                  -10.00          412.20                -10.00         148.04
160             0.00               51.11                  -10.00          412.20                -10.00         148.04
165             0.00               53.48                  -10.00          412.20                -10.00         148.04
170             0.00               55.29                  -10.00          412.20                -10.00         148.04
175             0.00               56.43                  -10.00          412.20                -10.00         148.04
180             0.00               56.82                  -10.00          412.20                -10.00         148.04
185             0.00               56.43                  -10.00          412.20                -10.00         148.04




Frequency Coordination and Interference Analysis Report                12/01/2010             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             CAPE CANAVER, FL
Licensee Name                     Computer Sciences Raytheon
Latitude (NAD 83)                 28° 25' 51.7" N
Longitude (NAD 83)                80° 35' 42.5" W
Ground Elevation (AMSL)           2.6 m / 8.5 ft
Antenna Centerline (AGL)          9.0 m / 29.5 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                                                            -13.5 (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               55.29                  -10.00          412.20                -10.00         148.04
195             0.00               53.48                  -10.00          412.20                -10.00         148.04
200             0.00               51.10                  -10.00          412.20                -10.00         148.04
205             0.00               48.27                  -10.00          412.20                -10.00         148.04
210             0.00               45.08                   -9.35          420.36                 -9.35         150.55
215             0.00               41.60                   -8.48          431.54                 -8.48         154.18
220             0.00               37.91                   -7.47          444.88                 -7.47         158.54
225             0.00               34.05                   -6.30          460.80                 -6.30         163.79
230             0.00               30.05                   -4.95          479.36                 -4.95         170.15
235             0.00               26.00                   -3.38          502.66                 -3.38         177.89
240             0.00               22.26                   -1.69          528.89                 -1.69         186.65
245             0.00               19.08                   -0.01          556.27                 -0.01         195.81
250             0.00               16.76                    1.40          580.21                  1.40         204.19
255             0.00               15.70                    2.10          592.60                  2.10         208.32
260             0.00               16.15                    1.80          587.19                  1.80         206.51
265             0.00               18.00                    0.62          566.89                  0.62         199.74
270             0.00               20.88                   -0.99          540.14                 -0.99         190.41
275             0.00               24.42                   -2.69          513.11                 -2.69         181.38
280             0.00               28.39                   -4.33          488.42                 -4.33         173.16
285             0.00               32.61                   -5.83          466.69                 -5.83         165.95
290             0.00               37.02                   -7.21          448.36                 -7.21         159.69
295             0.00               41.54                   -8.46          431.76                 -8.46         154.25
300             0.00               46.14                   -9.60          417.17                 -9.60         149.52
305             0.00               50.80                  -10.00          412.20                -10.00         148.04
310             0.00               55.51                  -10.00          412.20                -10.00         148.04
315             0.00               60.25                  -10.00          412.20                -10.00         148.04
320             0.00               65.01                  -10.00          412.20                -10.00         148.04
325             0.00               69.79                  -10.00          412.20                -10.00         148.04
330             0.00               74.59                  -10.00          412.20                -10.00         148.04
335             0.00               79.39                  -10.00          412.20                -10.00         148.04
340             0.00               84.20                  -10.00          412.20                -10.00         148.04
345             0.00               89.01                  -10.00          412.20                -10.00         148.04
350             0.00               93.83                  -10.00          412.20                -10.00         148.04
355             0.00               98.64                  -10.00          412.20                -10.00         148.04




Frequency Coordination and Interference Analysis Report                12/01/2010             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: December 01, 2010




Frequency Coordination and Interference Analysis Report   12/01/2010   Page 10 of 10



Document Created: 2010-12-01 10:50:38
Document Modified: 2010-12-01 10:50:38

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