Attachment Exhibit B

This document pretains to SES-LIC-20120426-00397 for License on a Satellite Earth Station filing.

IBFS_SESLIC2012042600397_949491

Exhibit B

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for Inmarsat PLC Lino Lakes, Minnesota Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, Virginia 20147 April 17, 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 04/17/2012 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 04/17/2012 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. 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 None No carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 04/17/2012 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 March 13, 2012. Company ALLINA MEDICAL TRANSPORTATION BFI Licenses, LLC Clearwire Spectrum Holdings II, LLC Clearwire Spectrum Holdings III, LLC Dunn County Genesis Technology Communications, LLC HENNEPIN COUNTY Maximum Communications Cellular, LLP Minneapolis, City of Multimedia Holdings Corp. (KARE-TV) New Cingular Wireless PCS LLC-Minnesota Nextera Wireless North Memorial Health Care SAGAMOREHILL OF MINNESOTA LICENSES, LLC ST. MICHAEL BROADCASTING, INC. St Paul Police Department T-MOBILE USA, INC. T-Mobile License LLC Telecom Transport Management, Inc Wireless Communications Venture, LLC XCEL ENERGY SERVICES INC Frequency Coordination and Interference Analysis Report 04/17/2012 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 04/17/2012 Page 6 of 10

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 04/17/2012 Job Number: 120313COMSJC05 Administrative Information Status ENGINEER PROPOSAL Call Sign Licensee Code IMMSAT Licensee Name Inmarsat PLC Site Information LINO LAKES, MINNESOTA Venue Name Latitude (NAD 83) 45° 7' 56.0" N Longitude (NAD 83) 93° 5' 44.0" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 273.47 m / 897.2 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 55° W to 63° West Longitude Azimuth Range 132.1° to 140.7° Corresponding Elevation Angles 25.9° / 30.1° Antenna Centerline (AGL) 9.14 m / 30.0 ft Antenna Information Receive Transmit Manufacturer GD SATCOM Technologies GD SATCOM Technologies Model 13.2 Meter 13.2 Meter Gain / Diameter 65.6 dBi / 13.2 m 68.9 dBi / 13.2 m 3-dB / 15-dB Beamwidth 0.09° / 0.17° 0.06° / 0.13° Max Available RF Power (dBW/4 kHz) -30.9 (dBW/MHz) -6.9 Maximum EIRP (dBW/4 kHz) 38.0 (dBW/MHz) 62.0 (dBW) 77.0 Interference Objectives: Long Term -156.7 dBW/MHz 20% -151.0 dBW/4 kHz 20% Short Term -146.7 dBW/MHz 0.01% -128.0 dBW/4 kHz 0.0025% Frequency Information Receive 18.0 GHz Transmit 28.0 GHz Emission / Frequency Range (MHz) 32M0G7W / 17700.0 - 19700.0 32M0G7W / 27500.0 - 29500.0 Max Great Circle Coordination Distance 158.9 km / 98.7 mi 100.0 km / 62.1 mi Precipitation Scatter Contour Radius 100.0 km / 62.1 mi 100.0 km / 62.1 mi Frequency Coordination and Interference Analysis Report 04/17/2012 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 LINO LAKES, MN Licensee Name Inmarsat PLC Latitude (NAD 83) 45° 7' 56.0" N Longitude (NAD 83) 93° 5' 44.0" W Ground Elevation (AMSL) 273.47 m / 897.2 ft Antenna Centerline (AGL) 9.14 m / 30.0 ft Antenna Model GD SATCOM Technologies 13.2 Meter Antenna Mode Receive 18.0 GHz Transmit 28.0 GHz Interference Objectives: Long Term -156.7 dBW/MHz 20% -151.0 dBW/4 kHz 20% Short Term -146.7 dBW/MHz 0.01% -128.0 dBW/4 kHz 0.0025% Max Available RF Power -30.9 (dBW/4 kHz) Receive 18.0 GHz Transmit 28.0 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 0 0.00 127.10 -10.00 138.12 -10.00 100.00 5 0.00 122.87 -10.00 138.12 -10.00 100.00 10 0.00 118.57 -10.00 138.12 -10.00 100.00 15 0.00 114.21 -10.00 138.12 -10.00 100.00 20 0.00 109.80 -10.00 138.12 -10.00 100.00 25 0.00 105.35 -10.00 138.12 -10.00 100.00 30 0.00 100.88 -10.00 138.12 -10.00 100.00 35 0.00 96.40 -10.00 138.12 -10.00 100.00 40 0.00 91.90 -10.00 138.12 -10.00 100.00 45 0.00 87.41 -10.00 138.12 -10.00 100.00 50 0.00 82.91 -10.00 138.12 -10.00 100.00 55 0.00 78.43 -10.00 138.12 -10.00 100.00 60 0.00 73.97 -10.00 138.12 -10.00 100.00 65 0.00 69.53 -10.00 138.12 -10.00 100.00 70 0.00 65.12 -10.00 138.12 -10.00 100.00 75 0.00 60.77 -10.00 138.12 -10.00 100.00 80 0.00 56.47 -10.00 138.12 -10.00 100.00 85 0.00 52.26 -10.00 138.12 -10.00 100.00 90 0.00 48.15 -10.00 138.12 -10.00 100.00 95 0.00 44.17 -9.13 140.58 -9.13 100.00 100 0.00 40.37 -8.15 143.41 -8.15 100.00 105 0.00 36.81 -7.15 146.40 -7.15 100.00 110 0.00 33.56 -6.15 149.47 -6.15 100.00 115 0.00 30.72 -5.19 152.48 -5.19 100.00 120 0.00 28.42 -4.34 155.19 -4.34 100.00 125 0.00 26.80 -3.70 157.28 -3.70 100.00 130 0.00 25.99 -3.37 158.88 -3.37 100.00 135 0.00 26.05 -3.40 158.79 -3.40 100.00 140 0.00 27.00 -3.78 157.01 -3.78 100.00 145 0.22 28.54 -4.39 153.19 -4.39 100.00 150 0.00 30.98 -5.28 152.20 -5.28 100.00 155 0.26 32.79 -5.89 145.29 -5.89 100.00 160 0.20 35.08 -6.63 147.65 -6.63 100.00 165 0.34 37.68 -7.40 133.77 -7.40 100.00 170 0.21 40.86 -8.28 142.23 -8.28 100.00 175 0.00 44.36 -9.18 140.45 -9.18 100.00 180 0.00 47.95 -10.00 138.12 -10.00 100.00 Frequency Coordination and Interference Analysis Report 04/17/2012 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 LINO LAKES, MN Licensee Name Inmarsat PLC Latitude (NAD 83) 45° 7' 56.0" N Longitude (NAD 83) 93° 5' 44.0" W Ground Elevation (AMSL) 273.47 m / 897.2 ft Antenna Centerline (AGL) 9.14 m / 30.0 ft Antenna Model GD SATCOM Technologies 13.2 Meter Antenna Mode Receive 18.0 GHz Transmit 28.0 GHz Interference Objectives: Long Term -156.7 dBW/MHz 20% -151.0 dBW/4 kHz 20% Short Term -146.7 dBW/MHz 0.01% -128.0 dBW/4 kHz 0.0025% Max Available RF Power -30.9 (dBW/4 kHz) Receive 18.0 GHz Transmit 28.0 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 185 0.00 51.72 -10.00 138.12 -10.00 100.00 190 0.00 55.63 -10.00 138.12 -10.00 100.00 195 0.00 59.66 -10.00 138.12 -10.00 100.00 200 0.00 63.76 -10.00 138.12 -10.00 100.00 205 0.00 67.94 -10.00 138.12 -10.00 100.00 210 0.00 72.17 -10.00 138.12 -10.00 100.00 215 0.00 76.44 -10.00 138.12 -10.00 100.00 220 0.00 80.73 -10.00 138.12 -10.00 100.00 225 0.00 85.05 -10.00 138.12 -10.00 100.00 230 0.00 89.37 -10.00 138.12 -10.00 100.00 235 0.28 93.71 -10.00 131.76 -10.00 100.00 240 0.00 98.01 -10.00 138.12 -10.00 100.00 245 0.00 102.32 -10.00 138.12 -10.00 100.00 250 0.00 106.59 -10.00 138.12 -10.00 100.00 255 0.00 110.83 -10.00 138.12 -10.00 100.00 260 0.00 115.03 -10.00 138.12 -10.00 100.00 265 0.00 119.16 -10.00 138.12 -10.00 100.00 270 0.00 123.21 -10.00 138.12 -10.00 100.00 275 0.00 127.15 -10.00 138.12 -10.00 100.00 280 0.00 130.97 -10.00 138.12 -10.00 100.00 285 0.00 134.62 -10.00 138.12 -10.00 100.00 290 0.00 138.05 -10.00 138.12 -10.00 100.00 295 0.00 141.21 -10.00 138.12 -10.00 100.00 300 0.00 144.01 -10.00 138.12 -10.00 100.00 305 0.00 146.38 -10.00 138.12 -10.00 100.00 310 0.00 148.22 -10.00 138.12 -10.00 100.00 315 0.00 149.41 -10.00 138.12 -10.00 100.00 320 0.00 149.89 -10.00 138.12 -10.00 100.00 325 0.00 149.63 -10.00 138.12 -10.00 100.00 330 0.00 148.63 -10.00 138.12 -10.00 100.00 335 0.00 145.97 -10.00 138.12 -10.00 100.00 340 0.00 142.66 -10.00 138.12 -10.00 100.00 345 0.00 139.06 -10.00 138.12 -10.00 100.00 350 0.00 135.23 -10.00 138.12 -10.00 100.00 355 0.00 131.23 -10.00 138.12 -10.00 100.00 Frequency Coordination and Interference Analysis Report 04/17/2012 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. Jeffrey E. Cowles Engineer III, Telecommunications COMSEARCH 19700 Janelia Farm Boulevard Ashburn, Va. 20147 DATED: April 17, 2012 Frequency Coordination and Interference Analysis Report 04/17/2012 Page 10 of 10


Document Created: 2012-04-20 11:56:22
Document Modified: 2012-04-20 11:56:22
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