Attachment Exhibit A

This document pretains to SES-AMD-20120203-00139 for Amended Filing on a Satellite Earth Station filing.

IBFS_SESAMD2012020300139_938218

FREQUENCY COORDINATION AND INTERFERENCE
            ANALYSIS REPORT


                     Prepared for

                  Google Fiber, Inc.
                 Council Bluffs, Iowa

                Satellite Earth Station




                     Prepared By:
                    COMSEARCH
             19700 Janelia Farm Boulevard
                Ashburn, Virginia 20147
                  December 2, 2011


                                                     TABLE OF CONTENTS
1. CONCLUSIONS.............................................................................................................................................3
2. SUMMARY OF RESULTS.............................................................................................................................4
3. SUPPLEMENTAL SHOWING .......................................................................................................................5
4. EARTH STATION COORDINATION DATA ..................................................................................................7
5. CERTIFICATION .........................................................................................................................................11




Frequency Coordination and Interference Analysis Report                                             12/02/2011                       Page 2 of 11


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   12/02/2011         Page 3 of 11


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 receive-only earth station.


       Company

       Union Pacific Railroad Company



No other carriers reported potential interference cases.




Frequency Coordination and Interference Analysis Report    12/02/2011         Page 4 of 11


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 November 2,
2011.


        Company

        Airband Communications Inc
        BNSF Railway Company
        Cherokee Regional Medical Center
        City of St. Joseph
        Clearwire Spectrum Holdings III, LLC
        Community Internet System Inc.
        Cox Communications Kansas LLC
        Douglas County Communications Department
        EVERTEK, Inc.
        Future Technologies
        GRAND ISLAND, CITY OF
        Giant Communications Inc
        Jagwire Enterprises
        KCP&L Greater Missouri Operations Compan
        Kansas Department of Transportation
        KeyOn Communications, Inc.
        Long Lines Wireless, LLC
        Loup River Public Power District
        METROPOLITAN AREA NETWORKS, INC.
        NE Colorado Cellular, Inc.
        NEBRASKA PUBLIC POWER DISTRICT
        NEBRASKA, STATE OF
        New Cingular Wireless PCS, LLC (was WWC)
        New Cingular Wireless PCS, LLC - KS/MO
        Nex-Tech, Inc.
        Northwest Communications Inc.
        OEM Communications
        OMAHA PUBLIC POWER DISTRICT
        Papillion Public Schools
        Pottawattamie, County of
        SIOUX VALLEY MEMORIAL HOSPITAL
        Sparkplug Central, Inc.
        Superior iNET
        Telebeep, Inc.




Frequency Coordination and Interference Analysis Report               12/02/2011              Page 5 of 11


       Company (Continued)

       USCOC of Greater Iowa, LLC
       USCOC of Greater Missouri, LLC
       USCOC of Iowa RSA 16 Inc.
       USD111 Doniphan West Schools
       Union Pacific Railroad Company
       United States Cellular OP Co Des Moines




Frequency Coordination and Interference Analysis Report   12/02/2011   Page 6 of 11


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            12/02/2011            Page 7 of 11


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

Date:                                    12/02/2011
Job Number:                              111102COMSJC09
Administrative Information
Status                                   ENGINEER PROPOSAL
Call Sign
Licensee Code                            GOOFIB
Licensee Name                            Google Fiber, Inc.
Site Information                         COUNCIL BLUFFS, IOWA
Venue Name
Latitude (NAD 83)                        41° 13' 14.2" N
Longitude (NAD 83)                       95° 52' 1.3" W
Climate Zone                             A
Rain Zone                                2
Ground Elevation (AMSL)                  300.0 m / 984.3 ft
Link Information
Satellite Type                           Geostationary
Mode                                     RO - Receive-Only
Modulation                               Analog and Digital
Satellite Arc                            50° W to 143° West Longitude
Azimuth Range                            122.6° to 238.5°
Corresponding Elevation Angles           23.6° / 22.8°
Antenna Centerline (AGL)                 3.05 m / 10.0 ft
Antenna Information                            Receive
Manufacturer                                   ViaSat
Model                                          4.5 Meter
Gain / Diameter                                53.1 dBi / 4.5 m
3-dB / 15-dB Beamwidth                         0.40° / 0.75°

Interference Objectives:    Long Term          -156.0 dBW/MHz        20%
                            Short Term         -146.0 dBW/MHz        0.01%

Frequency Information                          Receive 11.0 GHz
Emission / Frequency Range (MHz)               36M0F8W / 10950.0 - 11200.0
                                               36M0G7W / 10950.0 - 11200.0
                                               36M0F8W / 11450.0 - 11700.0
                                               36M0G7W / 11450.0 - 11700.0


Max Great Circle Coordination Distance         268.1 km / 166.6 mi
Precipitation Scatter Contour Radius           491.0 km / 305.0 mi




Frequency Coordination and Interference Analysis Report                      12/02/2011        Page 8 of 11


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



Coordination Values              COUNCIL BLUFFS, IA
Licensee Name                     Google Fiber, Inc.
Latitude (NAD 83)                 41° 13' 14.2" N
Longitude (NAD 83)                95° 52' 1.3" W
Ground Elevation (AMSL)           300.0 m / 984.3 ft
Antenna Centerline (AGL)          3.05 m / 10.0 ft
Antenna Model                     ViaSat 4.5 Meter
Antenna Mode                             Receive 11.0 GHz
Interference Objectives: Long Term       -156.0 dBW/MHz 20%
                         Short Term      -146.0 dBW/MHz 0.01%

                                                              Receive 11.0 GHz
               Horizon            Antenna                 Horizon        Coordination
Azimuth (°)    Elevation (°)      Discrimination (°)      Gain (dBi)     Distance (km)
 0              0.00              118.76                  -10.00          231.37
  5             0.00              115.11                  -10.00          231.37
 10             0.53              110.70                  -10.00          203.07
 15             0.57              106.15                  -10.00          203.58
 20             0.60              101.58                  -10.00          201.94
 25             0.70              96.99                   -10.00          197.09
 30             1.01              92.39                   -10.00          181.39
 35             1.02              87.78                   -10.00          181.05
 40             1.11              83.16                   -10.00          178.11
 45             0.96              78.57                   -10.00          183.91
 50             0.90              73.98                   -10.00          186.86
 55             0.84              69.43                   -10.00          190.17
 60             0.40              64.98                   -10.00          213.22
 65             0.57              60.45                   -10.00          203.58
 70             0.59              56.01                   -10.00          202.60
 75             0.53              51.66                   -10.00          205.18
 80             0.47              47.40                    -9.89          206.98
 85             0.44              43.25                    -8.90          213.54
 90             0.60              39.16                    -7.82          208.41
 95             0.54              35.38                    -6.72          215.87
100             0.39              31.96                    -5.62          233.12
105             0.00              29.15                    -4.62          256.71
110             0.00              26.60                    -3.62          261.72
115             0.00              24.74                    -2.84          265.75
120             0.00              23.75                    -2.39          268.06
125             0.00              23.74                    -2.39          268.10
130             0.00              24.69                    -2.81          265.87
135             0.00              26.51                    -3.59          261.89
140             0.00              29.04                    -4.58          256.90
145             0.00              31.84                    -5.57          251.97
150             0.00              34.41                    -6.42          247.91
155             0.00              36.69                    -7.11          244.59
160             0.00              38.65                    -7.68          241.82
165             0.00              40.24                    -8.12          239.81
170             0.00              41.40                    -8.43          238.39
175             0.00              42.12                    -8.61          237.54
180             0.00              42.36                    -8.68          237.26




Frequency Coordination and Interference Analysis Report                12/02/2011        Page 9 of 11


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



Coordination Values              COUNCIL BLUFFS, IA
Licensee Name                     Google Fiber, Inc.
Latitude (NAD 83)                 41° 13' 14.2" N
Longitude (NAD 83)                95° 52' 1.3" W
Ground Elevation (AMSL)           300.0 m / 984.3 ft
Antenna Centerline (AGL)          3.05 m / 10.0 ft
Antenna Model                     ViaSat 4.5 Meter
Antenna Mode                             Receive 11.0 GHz
Interference Objectives: Long Term       -156.0 dBW/MHz 20%
                         Short Term      -146.0 dBW/MHz 0.01%

                                                              Receive 11.0 GHz
               Horizon            Antenna                 Horizon        Coordination
Azimuth (°)    Elevation (°)      Discrimination (°)      Gain (dBi)     Distance (km)
185             0.00              42.12                    -8.61          237.54
190             0.00              41.40                    -8.43          238.39
195             0.25              40.00                    -8.05          235.03
200             0.46              38.23                    -7.56          217.62
205             0.58              36.19                    -6.97          212.98
210             0.55              33.95                    -6.27          217.49
215             0.47              31.46                    -5.44          225.93
220             0.45              28.69                    -4.44          233.02
225             0.33              26.02                    -3.38          249.14
230             0.41              23.85                    -2.44          246.13
235             0.46              22.57                    -1.84          245.03
240             0.42              22.39                    -1.75          249.09
245             0.40              23.23                    -2.15          248.88
250             0.50              24.91                    -2.91          235.90
255             0.48              27.45                    -3.96          232.27
260             0.40              30.60                    -5.14          234.05
265             0.52              34.03                    -6.30          218.57
270             0.54              37.84                    -7.45          212.84
275             0.55              41.87                    -8.55          207.94
280             0.57              46.06                    -9.58          205.33
285             0.61              50.35                   -10.00          201.57
290             0.65              54.74                   -10.00          199.69
295             0.50              59.24                   -10.00          204.26
300             0.39              63.78                   -10.00          214.05
305             0.32              68.33                   -10.00          220.27
310             0.00              72.94                   -10.00          231.37
315             0.00              77.53                   -10.00          231.37
320             0.00              82.12                   -10.00          231.37
325             0.00              86.73                   -10.00          231.37
330             0.00              91.34                   -10.00          231.37
335             0.00              95.95                   -10.00          231.37
340             0.00              100.55                  -10.00          231.37
345             0.00              105.14                  -10.00          231.37
350             0.00              109.71                  -10.00          231.37
355             0.00              114.25                  -10.00          231.37




Frequency Coordination and Interference Analysis Report                12/02/2011        Page 10 of 11


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: December 2, 2011




Frequency Coordination and Interference Analysis Report   12/02/2011   Page 11 of 11



Document Created: 2019-04-17 12:46:33
Document Modified: 2019-04-17 12:46:33

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