Attachment Coordination Report

This document pretains to SES-MFS-20120906-00798 for Modification w/ Foreign Satellite (earth station) on a Satellite Earth Station filing.

IBFS_SESMFS2012090600798_965034

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for EchoStar Corporation CHEYENNE, WY (E080120) Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 August 29, 2012

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 08/29/2012 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 08/29/2012 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. Frequency Coordination and Interference Analysis Report 08/29/2012 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 08/09/2012. Company ACS Communications BOARD OF PUBLIC UTILITIES City of Cheyenne Clearwire Spectrum Holdings III, LLC Eagle-Net Alliance LP Broadband, Inc. Laurence Brett Glass Millhouse Electronics Inc State of Colorado Thompson School District Verizon Wireless (VAW) LLC -CO/ID/MT/WY WELD COUNTY COLORADO Frequency Coordination and Interference Analysis Report 08/29/2012 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 08/29/2012 Page 6 of 10

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 08/09/2012 Job Number: <PCNJobCode> Administrative Information Status ENGINEER PROPOSAL Call Sign <PCNCallSign> Licensee Code ZECHOS Licensee Name EchoStar Corporation Site Information CHEYENNE, WY Venue Name Latitude (NAD 83) 41° 7' 54.4" N Longitude (NAD 83) 104° 44' 13.0" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 1810.51 m / 5940.0 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 42° W to 148° West Longitude Azimuth Range 108.7° to 235.0° Corresponding Elevation Angles 11.7° / 25.4° Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Information Receive - FCC32 Transmit - FCC32 Manufacturer Vertex Vertex Model 9 Meter 9 Meter Gain / Diameter 58.6 dBi / 9.0 m 62.9 dBi / 9.0 m 3-dB / 15-dB Beamwidth 0.20° / 0.40° 0.05° / 0.15° Max Available RF Power (dBW/4 kHz) -7.8 (dBW/MHz) 16.2 Maximum EIRP (dBW/4 kHz) 55.1 (dBW/MHz) 79.1 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 - 24M0G1W / 12200.0 - 12700.0 800KG2D - 24M0G1W / 17300.0 - 17800.0 Max Great Circle Coordination Distance 303.8 km / 188.7 mi 184.2 km / 114.5 mi Precipitation Scatter Contour Radius 520.2 km / 323.2 mi 100.0 km / 62.1 mi Frequency Coordination and Interference Analysis Report 08/29/2012 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 CHEYENNE, WY Licensee Name EchoStar Corporation Latitude (NAD 83) 41° 7' 54.4" N Longitude (NAD 83) 104° 44' 13.0" W Ground Elevation (AMSL) 1810.51 m / 5940.0 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model Vertex 9 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 -7.8 (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 0.82 108.38 -10.00 186.72 -10.00 100.00 5 0.86 103.48 -10.00 184.41 -10.00 100.00 10 0.84 98.57 -10.00 185.71 -10.00 100.00 15 0.79 93.66 -10.00 188.31 -10.00 100.00 20 0.82 88.75 -10.00 186.91 -10.00 100.00 25 0.81 83.84 -10.00 187.21 -10.00 100.00 30 0.85 78.93 -10.00 185.23 -10.00 100.00 35 0.74 74.03 -10.00 190.64 -10.00 100.00 40 0.72 69.13 -10.00 192.05 -10.00 100.00 45 0.65 64.25 -10.00 195.26 -10.00 101.59 50 0.66 59.37 -10.00 195.00 -10.00 101.37 55 0.55 54.51 -10.00 200.54 -10.00 106.29 60 0.43 49.68 -10.00 205.83 -10.00 113.35 65 0.39 44.87 -9.30 212.42 -9.30 118.53 70 0.34 40.10 -8.08 221.82 -8.08 125.33 75 0.32 35.37 -6.72 229.92 -6.72 130.57 80 0.36 30.70 -5.18 233.41 -5.18 130.46 85 0.42 26.12 -3.42 236.19 -3.42 130.72 90 0.41 21.74 -1.43 247.29 -1.43 137.05 95 0.00 17.94 0.65 280.28 0.65 166.69 100 0.00 14.53 2.94 292.96 2.94 175.39 105 0.00 12.24 4.81 300.96 4.81 182.48 110 0.00 11.73 5.26 303.79 5.26 184.21 115 0.30 12.96 4.19 288.86 4.19 169.22 120 0.45 15.85 2.00 262.06 2.00 145.33 125 0.54 19.21 -0.09 242.73 -0.09 131.95 130 0.65 22.43 -1.77 228.18 -1.77 123.47 135 0.66 25.60 -3.20 220.95 -3.20 119.13 140 0.77 28.51 -4.37 210.36 -4.37 111.21 145 0.68 31.37 -5.41 210.18 -5.41 112.24 150 0.76 33.86 -6.24 202.92 -6.24 106.56 155 0.85 36.04 -6.92 198.17 -6.92 100.75 160 0.84 37.98 -7.49 196.34 -7.49 100.00 165 0.80 39.58 -7.94 196.35 -7.94 100.31 170 0.85 40.67 -8.23 192.62 -8.23 100.00 175 0.91 41.32 -8.40 189.09 -8.40 100.00 180 1.02 41.45 -8.44 183.76 -8.44 100.00 185 1.12 41.11 -8.35 181.07 -8.35 100.00 Frequency Coordination and Interference Analysis Report 08/29/2012 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 CHEYENNE, WY Licensee Name EchoStar Corporation Latitude (NAD 83) 41° 7' 54.4" N Longitude (NAD 83) 104° 44' 13.0" W Ground Elevation (AMSL) 1810.51 m / 5940.0 ft Antenna Centerline (AGL) 5.49 m / 18.0 ft Antenna Model Vertex 9 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 -7.8 (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 1.10 40.44 -8.17 182.52 -8.17 100.00 195 1.15 39.25 -7.85 182.50 -7.85 100.00 200 1.18 37.67 -7.40 183.46 -7.40 100.00 205 1.18 35.75 -6.83 186.04 -6.83 100.00 210 1.01 33.65 -6.17 194.15 -6.17 100.00 215 1.08 31.05 -5.30 195.76 -5.30 100.00 220 1.13 28.33 -4.30 198.79 -4.30 100.00 225 1.06 26.23 -3.47 204.19 -3.47 102.22 230 0.77 25.12 -3.00 216.34 -3.00 114.90 235 0.83 24.58 -2.76 214.21 -2.76 112.74 240 1.03 24.85 -2.88 205.06 -2.88 104.58 245 0.66 26.57 -3.61 219.36 -3.61 118.24 250 0.62 28.70 -4.45 217.11 -4.45 117.27 255 0.78 31.30 -5.39 205.49 -5.39 107.92 260 0.85 34.45 -6.43 200.33 -6.43 102.14 265 1.08 37.87 -7.46 186.45 -7.46 100.00 270 1.08 41.69 -8.50 181.59 -8.50 100.00 275 1.27 45.61 -9.48 170.97 -9.48 100.00 280 1.48 49.70 -10.00 158.91 -10.00 100.00 285 1.33 54.03 -10.00 163.66 -10.00 100.00 290 1.24 58.41 -10.00 169.41 -10.00 100.00 295 1.10 62.85 -10.00 173.76 -10.00 100.00 300 0.94 67.34 -10.00 180.45 -10.00 100.00 305 1.02 71.81 -10.00 176.54 -10.00 100.00 310 0.75 76.35 -10.00 190.20 -10.00 100.00 315 0.70 80.88 -10.00 192.82 -10.00 100.00 320 0.60 85.42 -10.00 198.09 -10.00 104.09 325 0.59 89.96 -10.00 198.40 -10.00 104.36 330 0.66 94.50 -10.00 194.76 -10.00 101.16 335 0.76 99.04 -10.00 190.04 -10.00 100.00 340 0.92 103.58 -10.00 181.70 -10.00 100.00 345 0.81 108.08 -10.00 187.03 -10.00 100.00 350 0.80 112.55 -10.00 187.56 -10.00 100.00 355 0.88 113.28 -10.00 183.74 -10.00 100.00 Frequency Coordination and Interference Analysis Report 08/29/2012 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: August 29, 2012 Frequency Coordination and Interference Analysis Report 08/29/2012 Page 10 of 10


Document Created: 2012-08-29 14:47:56
Document Modified: 2012-08-29 14:47:56
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