Attachment Attachment A

This document pretains to SES-LIC-20091103-01413 for License on a Satellite Earth Station filing.

IBFS_SESLIC2009110301413_774463

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for Cisco Systems, Inc. BOXBOROUGH, MA Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 October 30, 2009

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 10/30/2009 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 10/30/2009 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 transmit-receive earth station. Company FiberTower Network Services Corp. Cellco Partnership - E-MA, NH, RI Yankee Microwave, Inc. Worcester Telephone Company New Cingular Wireless PCS LLC - MA Cellco Partnership - (W-NY) No other carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 10/30/2009 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 09/24/2009. Company ALGONQUIN GAS TRANSMISSION CO AT&T CORP BAE Systems Bank of America N.A. Boston Catholic Television Inc. Boston, City of Cellco Partnership - (W-NY) Cellco Partnership - CT, W-MA Cellco Partnership - E-MA, NH, RI Cellco Prtnrshp - Phil. Tri-State Rgn City of Bristol Mayor's Office City of New Haven Police Services Clearwire Spectrum Holdings II, LLC Community Wisp Conterra Ultra Broadband, LLC EAST HAMPTON TOWN POLICE DEPARTMENT EMC CORPORATION FiberTower Network Services Corp. GREENWICH TOWN Global Crossing Telecommunications, Inc. Granite State Telephone, Inc. Greater Boston Radio Inc. Industrial Tower and Wireless, LLC LACKAWANNA COUNTY Local Communications Network, Inc. MASSACHUSETTS BAY TRANSIT AUTHORITY MASSACHUSETTS PORT AUTHORITY MASSACHUSETTS STATE POLICE MASSACHUSETTS WATER RESOURCES AUTHORITY METROPOLITAN AREA NETWORKS, INC. MVA.NET, LTD Manchester-Nashua Cellular Telephone, LP Massachusetts, Commonwealth Public Works NEW HAMPSHIRE STATE POLICE NEXTEL COMM. OF THE MID-ATLANTIC NH #1 Rural Cellular, Inc. NORTHEAST UTILITIES SERVICE COMPANY NYNEX Mobile Limited Partnership 2 Nashua City New Hampshire New Britain, City of Frequency Coordination and Interference Analysis Report 10/30/2009 Page 5 of 11

New Cingular Wireless PCS LLC - MA New Cingular Wireless PCS LLC-Maine New Cingular Wireless PCS, LLC - NY New Cingular Wireless PCS, LLC - PA New Hampshire RSA #2 Partnership New York Communcations Co Northeast Pennsylvania SMSA LTD Prtnrsh Norton, Douglas R Orange Poughkeepsie SMSA LTD Partnership Pipeline Wireless, LLC Portland Cellular Partnership - Maine RCC ATLANTIC LICENSES LLC-NE EAST NTWK RCC Atlantic Licenses, LLC RCC Minnesota, Inc - E-MA,NH, RI, ME STAMFORD, CITY OF Southwestern NH District Fire Mutual Aid State of New Hampshire Homland Security Towerstream, Inc Town of Narragansett, Rhode Island Verizon New England Inc. Worcester Telephone Company Yankee Microwave, Inc. York County Maine Frequency Coordination and Interference Analysis Report 10/30/2009 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 10/30/2009 Page 7 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 10/30/2009 Job Number: 090924COMSGE01 Administrative Information Status ENGINEER PROPOSAL Call Sign Licensee Code CISCOS Licensee Name Cisco Systems, Inc. Site Information BOXBOROUGH, MA Venue Name Latitude (NAD 83) 42° 29' 0.6" N Longitude (NAD 83) 71° 32' 26.4" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 91.68 m / 300.8 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 45° W to 142° West Longitude Azimuth Range 143.5° to 256.5° Corresponding Elevation Angles 34.1° / 5.6° Antenna Centerline (AGL) 14.94 m / 49.0 ft Antenna Information Receive - FCC32 Transmit - FCC32 Manufacturer Prodelin Prodelin Model 1251 1251 Gain / Diameter 47.6 dBi / 2.4 m 49.2 dBi / 2.4 m 3-dB / 15-dB Beamwidth 0.70° / 1.40° 0.58° / 1.18° Max Available RF Power (dBW/4 kHz) -14.0 (dBW/MHz) 10.0 Maximum EIRP (dBW/4 kHz) 35.2 (dBW/MHz) 59.2 Interference Objectives: Long Term -156.0 dBW/MHz 20% -151.0 dBW/4 kHz 20% Short Term -146.0 dBW/MHz 0.01% -128.0 dBW/4 kHz 0.0025% Frequency Information Receive 11.0 GHz Transmit 14.0 GHz Emission / Frequency Range (MHz) 1M60G7D - 6M50G7D / 10950.0 - 11200.0 1M60G7D - 6M50G7D / 14000.0 - 14500.0 1M60G7D - 6M50G7D / 11450.0 - 11700.0 Max Great Circle Coordination Distance 422.4 km / 262.4 mi 181.2 km / 112.6 mi Precipitation Scatter Contour Radius 595.5 km / 370.0 mi 100.0 km / 62.1 mi Frequency Coordination and Interference Analysis Report 10/30/2009 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 BOXBOROUGH, MA Licensee Name Cisco Systems, Inc. Latitude (NAD 83) 42° 29' 0.6" N Longitude (NAD 83) 71° 32' 26.4" W Ground Elevation (AMSL) 91.68 m / 300.8 ft Antenna Centerline (AGL) 14.94 m / 49.0 ft Antenna Model Prodelin 2.4 Meter Antenna Mode Receive 11.0 GHz Transmit 14.0 GHz Interference Objectives: Long Term -156.0 dBW/MHz 20% -151.0 dBW/4 kHz 20% Short Term -146.0 dBW/MHz 0.01% -128.0 dBW/4 kHz 0.0025% Max Available RF Power -14.0 (dBW/4 kHz) Receive 11.0 GHz Transmit 14.0 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 0 0.49 103.43 -10.00 205.23 -10.00 100.00 5 0.25 108.40 -10.00 226.48 -10.00 111.88 10 0.41 113.38 -10.00 211.99 -10.00 100.00 15 0.00 118.33 -10.00 231.37 -10.00 115.80 20 0.57 117.41 -10.00 203.40 -10.00 100.00 25 1.12 113.61 -10.00 177.80 -10.00 100.00 30 1.13 109.56 -10.00 177.30 -10.00 100.00 35 0.88 105.41 -10.00 187.77 -10.00 100.00 40 0.85 101.28 -10.00 189.44 -10.00 100.00 45 0.98 97.13 -10.00 182.91 -10.00 100.00 50 1.24 92.96 -10.00 173.74 -10.00 100.00 55 0.94 88.76 -10.00 184.53 -10.00 100.00 60 0.89 84.58 -10.00 187.64 -10.00 100.00 65 0.42 80.46 -10.00 211.14 -10.00 100.00 70 0.00 76.41 -10.00 231.37 -10.00 115.80 75 0.00 72.34 -10.00 231.37 -10.00 115.80 80 0.00 68.33 -10.00 231.37 -10.00 115.80 85 0.33 64.27 -10.00 218.98 -10.00 105.70 90 0.00 60.50 -10.00 231.37 -10.00 115.80 95 0.00 56.73 -10.00 231.37 -10.00 115.80 100 0.48 52.84 -10.00 205.70 -10.00 100.00 105 0.58 49.28 -10.00 202.76 -10.00 100.00 110 0.30 46.14 -9.60 223.78 -9.60 109.26 115 0.00 43.31 -8.91 236.18 -8.91 118.51 120 0.33 40.33 -8.14 226.66 -8.14 110.02 125 0.00 38.25 -7.57 242.35 -7.57 121.91 130 0.00 36.37 -7.02 245.05 -7.02 123.30 135 0.00 35.01 -6.60 247.01 -6.60 124.35 140 0.00 34.25 -6.37 248.15 -6.37 124.96 145 0.00 34.11 -6.32 248.35 -6.32 125.07 150 0.00 34.62 -6.48 247.58 -6.48 124.65 155 0.00 35.75 -6.83 245.93 -6.83 123.77 160 0.21 37.21 -7.27 242.93 -7.27 122.03 165 0.00 38.92 -7.75 241.47 -7.75 121.43 170 0.28 39.77 -7.99 232.65 -7.99 114.71 175 0.32 40.41 -8.16 228.02 -8.16 111.17 180 0.00 40.96 -8.31 238.92 -8.31 120.03 185 0.00 40.73 -8.25 239.20 -8.25 120.19 Frequency Coordination and Interference Analysis Report 10/30/2009 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 BOXBOROUGH, MA Licensee Name Cisco Systems, Inc. Latitude (NAD 83) 42° 29' 0.6" N Longitude (NAD 83) 71° 32' 26.4" W Ground Elevation (AMSL) 91.68 m / 300.8 ft Antenna Centerline (AGL) 14.94 m / 49.0 ft Antenna Model Prodelin 2.4 Meter Antenna Mode Receive 11.0 GHz Transmit 14.0 GHz Interference Objectives: Long Term -156.0 dBW/MHz 20% -151.0 dBW/4 kHz 20% Short Term -146.0 dBW/MHz 0.01% -128.0 dBW/4 kHz 0.0025% Max Available RF Power -14.0 (dBW/4 kHz) Receive 11.0 GHz Transmit 14.0 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 190 0.00 40.04 -8.06 240.05 -8.06 120.65 195 0.58 38.37 -7.60 209.91 -7.60 100.00 200 1.10 36.39 -7.02 192.05 -7.02 100.00 205 1.47 34.22 -6.36 184.13 -6.36 100.00 210 1.47 32.06 -5.65 187.59 -5.65 100.00 215 1.35 29.71 -4.82 194.67 -4.82 100.00 220 0.54 27.67 -4.05 227.63 -4.05 105.77 225 0.40 24.88 -2.90 245.23 -2.90 118.33 230 0.46 21.75 -1.44 246.99 -1.44 117.70 235 0.64 18.39 0.38 243.92 0.38 112.71 240 0.65 15.06 2.56 255.13 2.56 118.28 245 0.82 11.51 5.47 262.05 5.47 119.20 250 0.64 8.13 9.25 295.00 9.25 136.76 255 0.87 4.99 14.54 422.35 14.54 181.22 260 0.98 5.80 12.91 296.37 12.91 133.47 265 1.09 9.61 7.43 260.34 7.43 114.76 270 1.12 14.20 3.19 235.63 3.19 101.89 275 1.20 18.99 0.04 217.90 0.04 100.00 280 1.32 23.85 -2.44 203.65 -2.44 100.00 285 1.53 28.75 -4.47 191.41 -4.47 100.00 290 1.63 33.69 -6.19 180.04 -6.19 100.00 295 1.34 38.68 -7.69 181.59 -7.69 100.00 300 1.35 43.65 -9.00 174.89 -9.00 100.00 305 1.40 48.62 -10.00 168.19 -10.00 100.00 310 1.43 53.60 -10.00 167.33 -10.00 100.00 315 1.43 58.58 -10.00 167.15 -10.00 100.00 320 1.30 63.56 -10.00 171.77 -10.00 100.00 325 1.47 68.54 -10.00 163.11 -10.00 100.00 330 1.51 73.53 -10.00 161.87 -10.00 100.00 335 1.37 78.51 -10.00 169.23 -10.00 100.00 340 1.24 83.50 -10.00 173.64 -10.00 100.00 345 1.19 88.49 -10.00 175.38 -10.00 100.00 350 1.22 93.47 -10.00 174.33 -10.00 100.00 355 0.89 98.45 -10.00 187.50 -10.00 100.00 Frequency Coordination and Interference Analysis Report 10/30/2009 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. BY: _ Gary K. Edwards Senior Manager COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 DATED: October 30, 2009 Frequency Coordination and Interference Analysis Report 10/30/2009 Page 11 of 11


Document Created: 2009-10-30 10:45:02
Document Modified: 2009-10-30 10:45:02
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