Attachment Coordination Report

This document pretains to SES-LIC-20110728-00868 for License on a Satellite Earth Station filing.

IBFS_SESLIC2011072800868_898722

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for AT&T Corp - Extended C-Band Sites ROARING CREEK, PA (13.1 meter) Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 June 20, 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 06/20/2011 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 06/20/2011 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 transmit-receive earth station. Company Allentown SMSA Limited Partnership Appalachian Broadcasting Cellco Partnership- PA Region Cellco Prtnrshp - Phil. Tri-State Rgn Commonwealth of Pennsylvania-Radio Proj. Coral Reef Tecnologies Ltd DAUPHIN COUNTY EMERGENCY MANAGEMENT Juniata County Emergency Services Kryptic Technologies New Cingular Wireless PCS, LLC - PA Northeast Pennsylvania SMSA LTD Prtnrsh Open Range Communications Penn Service Microwave Co., Inc. No other carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 06/20/2011 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 06/01/2011. Company AB Services LLC AT&T CORP Allentown SMSA Limited Partnership Appalachian Broadcasting Auburn Data Systems, LLC Bedford, County of Berks, County of Binghamton MSA Limited Partnership Borough of Huntingdon Cellco Partnership - Bridgeville, PA Cellco Partnership- PA Region Cellco Partnership-Newark-Dallas Verizon Cellco Prtnrshp - Phil. Tri-State Rgn Commonwealth of Pennsylvania-Radio Proj. Comprehensive Wireless LLC Conterra Ultra Broadband, LLC Coral Reef Tecnologies Ltd County of Tioga County of Warren DAUPHIN COUNTY EMERGENCY MANAGEMENT Direct Broadcast Services, Inc. EASTERN PENNSYLVANIA EMS COUNCIL EMS OF NORTHEAST PENNSYLVANIA Essex County Sherrif's Office FELHC, Inc. Fibertrack, LLC Fundamental Broadcasting LLC Juniata County Emergency Services Kryptic Technologies Last Mile Inc. Luzerne County Department of Public Sfty MCI Communications Services Inc. METROPOLITAN AREA NETWORKS, INC. Monroe County Control Center (PA) NEW JERSEY TRANSIT RAIL OPERATIONS,INC NYNEX Mobile of New York LP National Radio Astronomy Observatory New Cingular Wireless PCS LLC -NJ New Cingular Wireless PCS LLC -NE Reg New Cingular Wireless PCS of PA LLC Frequency Coordination and Interference Analysis Report 06/20/2011 Page 5 of 11

New Cingular Wireless PCS, LLC - NY New Cingular Wireless PCS, LLC - PA New Jersey, State of -NJ Transit New York RSA #3 Cellular Partnership Northeast Pennsylvania SMSA LTD Prtnrsh Open Range Communications Orange Poughkeepsie SMSA LTD Partnership PENNSYLVANIA TURNPIKE COMMISSION POTTER, COUNTY OF PSEG Services Corporation Penn Service Microwave Co., Inc. Pennsylvania 3 Sector 2, L.P. SBA Broadband Services SCTF NET South Canaan Cellular Communications Co. Stevens Institute of Technology Sullivan, County of Texas Eastern Communications, Inc. Thought Transmissions, LLC Tompkins County Dept. of Emergency Respo Upstate Cellular Network WITF Inc. Frequency Coordination and Interference Analysis Report 06/20/2011 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 06/20/2011 Page 7 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 06/20/2011 Job Number: 110601COMSGE01 Administrative Information Status ENGINEER PROPOSAL Call Sign Licensee Code P1175P Licensee Name AT&T Corp - Site Information ROARING CRK, PA Venue Name Latitude (NAD 83) 40° 53' 34.1" N Longitude (NAD 83) 76° 26' 23.1" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 294.74 m / 967.0 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 10° W to 139° West Longitude Azimuth Range 105.9° to 251.2° Corresponding Elevation Angles 9.0° / 11.9° Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Information Receive - FCC32 Transmit - FCC32 Manufacturer Vertex Vertex Model 13.1 Meter 13.1 Meter Gain / Diameter 53.5 dBi / 13.1 m 56.8 dBi / 13.1 m 3-dB / 15-dB Beamwidth 0.38° / 0.76° 0.26° / 0.52° Max Available RF Power (dBW/4 kHz) -2.7 (dBW/MHz) 21.3 Maximum EIRP (dBW/4 kHz) 54.1 (dBW/MHz) 78.1 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) 44K8G7W - 36M0G7W / 3700.0 - 4200.0 44K8G7W - 36M0G7W / 5925.0 - 6425.0 Max Great Circle Coordination Distance 460.6 km / 286.2 mi 252.8 km / 157.1 mi Precipitation Scatter Contour Radius 551.8 km / 342.8 mi 100.0 km / 62.1 mi Frequency Coordination and Interference Analysis Report 06/20/2011 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 ROARING CRK, PA Licensee Name AT&T Corp - Latitude (NAD 83) 40° 53' 34.1" N Longitude (NAD 83) 76° 26' 23.1" W Ground Elevation (AMSL) 294.74 m / 967.0 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model Vertex 13.1 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 -2.7 (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 0.00 105.73 -10.00 285.28 -10.00 170.66 5 1.40 100.84 -10.00 208.44 -10.00 107.31 10 2.32 95.89 -10.00 187.27 -10.00 100.00 15 2.58 90.93 -10.00 181.23 -10.00 100.00 20 2.29 85.96 -10.00 187.98 -10.00 100.00 25 2.15 81.00 -10.00 191.16 -10.00 100.00 30 1.96 76.04 -10.00 195.65 -10.00 100.00 35 1.56 71.10 -10.00 206.44 -10.00 103.26 40 1.33 66.16 -10.00 210.49 -10.00 109.17 45 1.05 61.24 -10.00 218.65 -10.00 116.25 50 1.13 56.30 -10.00 216.16 -10.00 114.13 55 1.07 51.38 -10.00 218.27 -10.00 115.93 60 1.29 46.43 -9.67 212.96 -9.67 110.95 65 1.02 41.57 -8.47 227.73 -8.47 121.81 70 0.54 36.78 -7.14 264.32 -7.14 146.76 75 0.40 31.99 -5.63 289.25 -5.63 165.07 80 0.28 27.26 -3.89 316.95 -3.89 186.03 85 0.36 22.57 -1.84 321.87 -1.84 186.48 90 0.36 18.07 0.57 340.17 0.57 196.33 95 1.10 13.46 3.78 306.61 3.78 164.34 100 1.70 9.40 7.68 315.88 7.68 163.96 105 2.12 6.94 10.96 460.62 10.96 252.79 110 2.23 7.89 9.57 313.33 9.57 158.51 115 2.14 11.26 5.71 282.82 5.71 143.26 120 1.82 15.00 2.60 269.83 2.60 138.36 125 1.64 18.55 0.29 259.85 0.29 134.09 130 1.74 21.79 -1.45 244.56 -1.45 126.63 135 2.04 24.71 -2.82 226.84 -2.82 114.66 140 2.37 27.44 -3.96 212.68 -3.96 104.06 145 2.66 29.97 -4.92 204.13 -4.92 100.00 150 3.08 32.11 -5.67 191.44 -5.67 100.00 155 3.61 33.86 -6.24 177.01 -6.24 100.00 160 4.02 35.32 -6.70 163.72 -6.70 100.00 165 3.76 37.04 -7.22 166.86 -7.22 100.00 170 3.63 38.23 -7.56 169.52 -7.56 100.00 175 3.52 38.99 -7.77 170.97 -7.77 100.00 180 3.38 39.35 -7.87 173.59 -7.87 100.00 185 3.27 39.24 -7.84 176.31 -7.84 100.00 Frequency Coordination and Interference Analysis Report 06/20/2011 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 ROARING CRK, PA Licensee Name AT&T Corp - Latitude (NAD 83) 40° 53' 34.1" N Longitude (NAD 83) 76° 26' 23.1" W Ground Elevation (AMSL) 294.74 m / 967.0 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model Vertex 13.1 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 -2.7 (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 2.90 38.95 -7.76 185.08 -7.76 100.00 195 2.78 37.96 -7.48 188.99 -7.48 100.00 200 2.63 36.60 -7.09 194.30 -7.09 100.00 205 2.40 34.92 -6.58 201.84 -6.58 100.00 210 2.35 32.73 -5.88 206.06 -5.88 100.00 215 2.24 30.31 -5.04 210.11 -5.04 102.83 220 1.92 27.79 -4.10 223.02 -4.10 112.87 225 1.88 24.83 -2.88 231.21 -2.88 118.13 230 1.49 21.97 -1.55 252.83 -1.55 132.50 235 1.01 19.00 0.03 281.82 0.03 150.48 240 1.05 15.55 2.21 296.60 2.21 158.82 245 1.29 12.26 4.79 307.11 4.79 163.01 250 2.05 9.90 7.11 297.23 7.11 151.34 255 2.63 9.98 7.02 278.90 7.02 138.48 260 2.71 12.66 4.44 256.66 4.44 128.65 265 2.00 16.89 1.31 254.17 1.31 130.34 270 0.94 21.63 -1.38 276.22 -1.38 148.10 275 0.62 26.16 -3.44 283.35 -3.44 156.68 280 0.33 30.82 -5.22 300.75 -5.22 175.75 285 0.48 35.43 -6.73 271.86 -6.73 152.25 290 0.46 40.16 -8.10 265.27 -8.10 148.96 295 0.37 44.96 -9.32 268.65 -9.32 153.60 300 0.00 49.84 -10.00 285.28 -10.00 170.66 305 0.00 54.67 -10.00 285.28 -10.00 170.66 310 0.00 59.52 -10.00 285.28 -10.00 170.66 315 0.00 64.38 -10.00 285.28 -10.00 170.66 320 0.00 69.25 -10.00 285.28 -10.00 170.66 325 0.00 74.13 -10.00 285.28 -10.00 170.66 330 0.00 79.02 -10.00 285.28 -10.00 170.66 335 0.00 83.91 -10.00 285.28 -10.00 170.66 340 0.00 88.80 -10.00 285.28 -10.00 170.66 345 0.00 93.70 -10.00 285.28 -10.00 170.66 350 0.00 98.59 -10.00 285.28 -10.00 170.66 355 0.00 103.48 -10.00 285.28 -10.00 170.66 Frequency Coordination and Interference Analysis Report 06/20/2011 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. BY: _ Gary K. Edwards Senior Manager COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 DATED: June 23, 2011 Frequency Coordination and Interference Analysis Report 06/20/2011 Page 11 of 11


Document Created: 2011-06-23 15:17:58
Document Modified: 2011-06-23 15:17:58
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