Attachment Coordination Report

This document pretains to SES-LIC-20130222-00205 for License on a Satellite Earth Station filing.

IBFS_SESLIC2013022200205_985735

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for EchoStar Corporation MUSTANG RIDGE, TX (13.2 Meter) Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 January 10, 2013

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 01/10/2013 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 01/10/2013 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-only earth station. Company Clearwire Spectrum Holdings III, LLC FiberTower Network Services Corp. No other carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 01/10/2013 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 12/19/2012. Company AirCanopy Internet Services, Inc. Airband Communications Inc Cibolo, TX Police Dept City of Bee Cave Clearwire Spectrum Holdings II, LLC Clearwire Spectrum Holdings III, LLC Clearwire Spectrum Holdings LLC ENTERPRISE PRODUCTS OPERATING LLC Electronic Corporate Pages, Inc. FiberTower Network Services Corp. Fixed Wireless Holdings, LLC Guadalupe Valley Electric Cooperative KVUE TV Inc. KXAN INC La Vernia Holdings, Inc. MULTITECHNOLOGY SERVICES LP NW Communications of Austin, Inc. Netspend Corporation New Cingular Wireless PCS LLC - N Texas New Cingular Wireless PCS LLC - S Texas Nextlink Wireless, LLC Randolph Brooks Federal Credit Union San Antonio Water System Sprint Spectrum, LP T-Mobile License LLC TXWI NET LLC Texas Broadband, Inc UNIVERSITY OF TX HEALTH SCIENCE CENTER Verizon Wireless (VAW) LLC-Central Texas Verizon Wireless Texas LLC - Houston GC West Central Wireless Zeecon Wireless Internet LLC Frequency Coordination and Interference Analysis Report 01/10/2013 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 01/10/2013 Page 6 of 10

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 12/19/2012 Job Number: <PCNJobCode> Administrative Information Status ENGINEER PROPOSAL Call Sign <PCNCallSign> Licensee Code ZECHOS Licensee Name EchoStar Corporation Site Information MUSTANG RIDGE, TX Venue Name Latitude (NAD 83) 30° 0' 34.6" N Longitude (NAD 83) 97° 41' 8.3" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 182.88 m / 600.0 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 44° W to 148° West Longitude Azimuth Range 110.2° to 247.5° Corresponding Elevation Angles 22.8° / 25.7° Antenna Centerline (AGL) 7.92 m / 26.0 ft Antenna Information Receive - FCC32 Transmit - FCC32 Manufacturer General Dynamics General Dynamics Model 13.2 Meter 13.2 Meter Gain / Diameter 62.0 dBi / 13.2 m 65.0 dBi / 13.2 m 3-dB / 15-dB Beamwidth 0.09° / 0.18° 0.06° / 0.12° Max Available RF Power (dBW/4 kHz) -3.0 (dBW/MHz) 21.0 Maximum EIRP (dBW/4 kHz) 62.0 (dBW/MHz) 86.0 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 12.2 GHz Transmit 17.3 GHz Emission / Frequency Range (MHz) 800KG2D - 24M0G7W / 12200.0 - 12700.0 800KG2D - 24M0G7W / 17300.0 - 17800.0 Max Great Circle Coordination Distance 266.3 km / 165.5 mi 175.0 km / 108.7 mi Precipitation Scatter Contour Radius 488.1 km / 303.3 mi 100.0 km / 62.1 mi Frequency Coordination and Interference Analysis Report 01/10/2013 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 MUSTANG RIDGE, TX Licensee Name EchoStar Corporation Latitude (NAD 83) 30° 0' 34.6" N Longitude (NAD 83) 97° 41' 8.3" W Ground Elevation (AMSL) 182.88 m / 600.0 ft Antenna Centerline (AGL) 7.92 m / 26.0 ft Antenna Model General Dynamics 13.2 Meter Antenna Mode Receive 12.2 GHz Transmit 17.3 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 -3.0 (dBW/4 kHz) Receive 12.2 GHz Transmit 17.3 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 0 0.00 108.54 -10.00 227.19 -10.00 144.38 5 0.00 103.97 -10.00 227.19 -10.00 144.38 10 0.00 99.38 -10.00 227.19 -10.00 144.38 15 0.00 94.78 -10.00 227.19 -10.00 144.38 20 0.00 90.17 -10.00 227.19 -10.00 144.38 25 0.00 85.56 -10.00 227.19 -10.00 144.38 30 0.00 80.96 -10.00 227.19 -10.00 144.38 35 0.00 76.37 -10.00 227.19 -10.00 144.38 40 0.00 71.80 -10.00 227.19 -10.00 144.38 45 0.00 67.25 -10.00 227.19 -10.00 144.38 50 0.00 62.73 -10.00 227.19 -10.00 144.38 55 0.00 58.25 -10.00 227.19 -10.00 144.38 60 0.00 53.84 -10.00 227.19 -10.00 144.38 65 0.00 49.49 -10.00 227.19 -10.00 144.38 70 0.00 45.25 -9.39 229.86 -9.39 146.36 75 0.00 41.13 -8.35 234.51 -8.35 149.83 80 0.00 37.19 -7.26 239.56 -7.26 153.63 85 0.00 33.49 -6.12 245.49 -6.12 157.74 90 0.00 30.12 -4.97 251.11 -4.97 163.56 95 0.00 27.20 -3.86 256.62 -3.86 167.77 100 0.00 24.90 -2.90 261.50 -2.90 171.42 105 0.00 23.39 -2.23 264.99 -2.23 173.99 110 0.00 22.84 -1.97 266.33 -1.97 174.97 115 0.00 23.32 -2.19 265.17 -2.19 174.12 120 0.00 24.76 -2.84 261.82 -2.84 171.65 125 0.00 27.01 -3.79 257.02 -3.79 168.06 130 0.26 29.69 -4.82 245.39 -4.82 156.02 135 0.30 33.03 -5.97 235.08 -5.97 147.73 140 0.32 36.70 -7.12 228.66 -7.12 142.82 145 0.26 40.31 -8.14 229.95 -8.14 145.15 150 0.00 43.83 -9.04 231.40 -9.04 147.51 155 0.00 46.90 -9.78 228.15 -9.78 145.09 160 0.00 49.61 -10.00 227.19 -10.00 144.38 165 0.00 51.87 -10.00 227.19 -10.00 144.38 170 0.21 53.39 -10.00 225.85 -10.00 143.09 175 0.22 54.44 -10.00 225.45 -10.00 142.70 180 0.00 55.02 -10.00 227.19 -10.00 144.38 185 0.00 54.65 -10.00 227.19 -10.00 144.38 Frequency Coordination and Interference Analysis Report 01/10/2013 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 MUSTANG RIDGE, TX Licensee Name EchoStar Corporation Latitude (NAD 83) 30° 0' 34.6" N Longitude (NAD 83) 97° 41' 8.3" W Ground Elevation (AMSL) 182.88 m / 600.0 ft Antenna Centerline (AGL) 7.92 m / 26.0 ft Antenna Model General Dynamics 13.2 Meter Antenna Mode Receive 12.2 GHz Transmit 17.3 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 -3.0 (dBW/4 kHz) Receive 12.2 GHz Transmit 17.3 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 190 0.23 53.37 -10.00 224.58 -10.00 141.87 195 0.00 51.87 -10.00 227.19 -10.00 144.38 200 0.00 49.61 -10.00 227.19 -10.00 144.38 205 0.00 46.90 -9.78 228.15 -9.78 145.09 210 0.00 43.83 -9.04 231.40 -9.04 147.51 215 0.00 40.47 -8.18 235.31 -8.18 150.43 220 0.00 36.94 -7.19 239.91 -7.19 153.90 225 0.00 33.65 -6.17 245.24 -6.17 157.55 230 0.00 30.77 -5.20 249.97 -5.20 161.18 235 0.00 28.41 -4.34 254.25 -4.34 165.97 240 0.00 26.73 -3.67 257.58 -3.67 168.49 245 0.00 25.85 -3.31 259.42 -3.31 169.87 250 0.00 25.86 -3.32 259.40 -3.32 169.85 255 0.00 26.75 -3.68 257.54 -3.68 168.45 260 0.00 28.45 -4.35 254.19 -4.35 165.92 265 0.00 30.81 -5.22 249.90 -5.22 161.13 270 0.00 33.70 -6.19 245.16 -6.19 157.49 275 0.00 37.00 -7.20 239.83 -7.20 153.84 280 0.00 40.59 -8.21 235.16 -8.21 150.32 285 0.00 44.42 -9.19 230.75 -9.19 147.02 290 0.00 48.42 -10.00 227.19 -10.00 144.38 295 0.00 52.55 -10.00 227.19 -10.00 144.38 300 0.36 56.67 -10.00 212.27 -10.00 130.44 305 0.34 61.00 -10.00 214.30 -10.00 132.28 310 0.34 65.39 -10.00 214.22 -10.00 132.20 315 0.29 69.82 -10.00 218.67 -10.00 136.28 320 0.27 74.28 -10.00 219.96 -10.00 137.49 325 0.24 78.77 -10.00 223.00 -10.00 140.36 330 0.23 83.27 -10.00 224.03 -10.00 141.34 335 0.27 87.78 -10.00 220.23 -10.00 137.75 340 0.23 92.29 -10.00 224.26 -10.00 141.56 345 0.00 96.79 -10.00 227.19 -10.00 144.38 350 0.00 101.28 -10.00 227.19 -10.00 144.38 355 0.00 105.75 -10.00 227.19 -10.00 144.38 Frequency Coordination and Interference Analysis Report 01/10/2013 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. BY: _ Gary K. Edwards Senior Manager COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 DATED: January 10, 2013 Frequency Coordination and Interference Analysis Report 01/10/2013 Page 10 of 10


Document Created: 2013-01-10 10:09:56
Document Modified: 2013-01-10 10:09:56
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