Attachment Exhibit A

This document pretains to SES-REG-20110321-00324 for Earth Station Registration on a Satellite Earth Station filing.

IBFS_SESREG2011032100324_877860

FREQUENCY COORDINATION AND INTERFERENCE
            ANALYSIS REPORT


                      Prepared for

            CHARTER COMMUNICATIONS, LLC
                 SLIDELL, LOUISIANA

                 Satellite Earth Station




                      Prepared By:
                     COMSEARCH
              19700 Janelia Farm Boulevard
                 Ashburn, Virginia 20147
                     March 21, 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                                             03/21/2011                       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.
Further, there will be no restrictions of its operation due to interference considerations.




Frequency Coordination and Interference Analysis Report   03/21/2011         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 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

       None



No carriers reported potential interference cases.




Frequency Coordination and Interference Analysis Report    03/21/2011         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 February 18,
2011.


        Company

        AT&T COMM. OF THE SOUTH CENTRAL STATES




Frequency Coordination and Interference Analysis Report                03/21/2011              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            03/21/2011            Page 6 of 10


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

Date:                                    03/21/2011
Job Number:                              110218COMSJC04
Administrative Information
Status                                   ENGINEER PROPOSAL
Call Sign
Licensee Code                            CHRCLC
Licensee Name                            CHARTER COMMUNICATIONS, LLC
Site Information                         SLIDELL, LOUISIANA
Venue Name
Latitude (NAD 83)                        30° 18' 8.4" N
Longitude (NAD 83)                       89° 46' 37.5" W
Climate Zone                             B
Rain Zone                                1
Ground Elevation (AMSL)                  4.27 m / 14.0 ft
Link Information
Satellite Type                           Geostationary
Mode                                     RO - Receive-Only
Modulation                               Analog and Digital
Satellite Arc                            60° W to 143° West Longitude
Azimuth Range                            131.4° to 249.3°
Corresponding Elevation Angles           42.1° / 23.1°
Antenna Centerline (AGL)                 6.1 m / 20.0 ft
Antenna Information                            Receive
Manufacturer                                   ATCi
Model                                          Simulsat 7
Gain / Diameter                                46.0 dBi / 7.0 m
3-dB / 15-dB Beamwidth                         0.85° / 1.60°

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)               36M0F8W / 3700.0 - 4200.0
                                               36M0G7W / 3700.0 - 4200.0


Max Great Circle Coordination Distance         522.3 km / 324.5 mi
Precipitation Scatter Contour Radius           572.4 km / 355.6 mi




Frequency Coordination and Interference Analysis Report                      03/21/2011        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              SLIDELL, LA
Licensee Name                     CHARTER COMMUNICATIONS, LLC
Latitude (NAD 83)                 30° 18' 8.4" N
Longitude (NAD 83)                89° 46' 37.5" W
Ground Elevation (AMSL)           4.27 m / 14.0 ft
Antenna Centerline (AGL)          6.1 m / 20.0 ft
Antenna Model                     ATCi Simulsat 7
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              108.94                  -10.00          412.20
  5             0.00              113.47                  -10.00          412.20
 10             0.00              112.75                  -10.00          412.20
 15             0.00              109.27                  -10.00          412.20
 20             0.00              105.72                  -10.00          412.20
 25             0.00              102.10                  -10.00          412.20
 30             0.00              98.44                   -10.00          412.20
 35             0.00              94.75                   -10.00          412.20
 40             0.00              91.05                   -10.00          412.20
 45             0.00              87.34                   -10.00          412.20
 50             0.00              83.64                   -10.00          412.20
 55             0.00              79.96                   -10.00          412.20
 60             0.00              76.32                   -10.00          412.20
 65             0.00              72.72                   -10.00          412.20
 70             0.00              69.20                   -10.00          412.20
 75             0.00              65.76                   -10.00          412.20
 80             0.00              62.43                   -10.00          412.20
 85             0.00              59.23                   -10.00          412.20
 90             0.00              56.18                   -10.00          412.20
 95             0.00              53.33                   -10.00          412.20
100             0.00              50.71                   -10.00          412.20
105             0.00              48.35                   -10.00          412.20
110             0.00              46.30                    -9.64          416.69
115             0.00              44.62                    -9.24          421.77
120             0.00              43.33                    -8.92          425.82
125             0.00              42.49                    -8.71          428.57
130             0.00              42.11                    -8.61          429.82
135             0.00              42.22                    -8.64          429.47
140             0.00              42.80                    -8.79          427.54
145             0.00              43.84                    -9.05          424.20
150             0.00              45.31                    -9.40          419.66
155             0.00              47.15                    -9.84          414.21
160             0.00              49.34                   -10.00          412.20
165             0.00              51.57                   -10.00          412.20
170             0.00              53.26                   -10.00          412.20
175             0.00              54.32                   -10.00          412.20
180             0.00              54.68                   -10.00          412.20
185             0.00              54.32                   -10.00          412.20




Frequency Coordination and Interference Analysis Report                03/21/2011        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              SLIDELL, LA
Licensee Name                     CHARTER COMMUNICATIONS, LLC
Latitude (NAD 83)                 30° 18' 8.4" N
Longitude (NAD 83)                89° 46' 37.5" W
Ground Elevation (AMSL)           4.27 m / 14.0 ft
Antenna Centerline (AGL)          6.1 m / 20.0 ft
Antenna Model                     ATCi Simulsat 7
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              53.26                   -10.00          412.20
195             0.00              51.57                   -10.00          412.20
200             0.00              49.33                   -10.00          412.20
205             0.00              46.64                    -9.72          415.70
210             0.00              43.59                    -8.99          424.98
215             0.00              40.26                    -8.12          436.20
220             0.00              36.69                    -7.11          449.64
225             0.00              33.08                    -5.99          464.53
230             0.00              29.80                    -4.86          480.68
235             0.00              27.00                    -3.79          496.48
240             0.00              24.85                    -2.88          510.22
245             0.00              23.51                    -2.28          519.54
250             0.00              23.14                    -2.11          522.26
255             0.00              23.78                    -2.40          517.63
260             0.00              25.35                    -3.10          506.89
265             0.00              27.69                    -4.06          492.39
270             0.00              30.63                    -5.16          476.36
275             0.00              34.02                    -6.29          460.93
280             0.00              37.72                    -7.41          445.60
285             0.00              41.66                    -8.49          431.35
290             0.00              45.77                    -9.51          418.27
295             0.00              50.01                   -10.00          412.20
300             0.00              54.35                   -10.00          412.20
305             0.00              58.76                   -10.00          412.20
310             0.00              63.22                   -10.00          412.20
315             0.00              67.73                   -10.00          412.20
320             0.00              72.27                   -10.00          412.20
325             0.00              76.84                   -10.00          412.20
330             0.00              81.42                   -10.00          412.20
335             0.00              86.01                   -10.00          412.20
340             0.00              90.61                   -10.00          412.20
345             0.00              95.21                   -10.00          412.20
350             0.00              99.80                   -10.00          412.20
355             0.00              104.38                  -10.00          412.20




Frequency Coordination and Interference Analysis Report                03/21/2011        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: March 21, 2011




Frequency Coordination and Interference Analysis Report   03/21/2011   Page 10 of 10



Document Created: 2019-04-20 21:12:37
Document Modified: 2019-04-20 21:12:37

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