Attachment Exhibit B

This document pretains to SES-LIC-20110408-00411 for License on a Satellite Earth Station filing.

IBFS_SESLIC2011040800411_880805

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for ENTERPRISE PRODUCTS OPERATING LLC PORT ARTHUR (Permcor Lucas), TEXAS Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, Virginia 20147 April 7, 2011

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 04/07/2011 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, based upon the restrictions noted in the Summary of Results (Section 2). Frequency Coordination and Interference Analysis Report 04/07/2011 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 most cases. 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 and frequency offset are considered on the interfering paths, sufficient losses exist to negate harmful interference from occurring with the proposed transmit-receive earth station. Further, the transmit spectrum will be limited to frequencies 5925.0 to 5957.0 MHz, 6170.0 to 6209.0 MHz, 6333.0 to 6386.0 MHz, and 6422.0 - 6425.0 MHz. Company GTE Mobilnet of South Texas Ltd. Partners No other carriers reported potential interference cases. Frequency Coordination and Interference Analysis Report 04/07/2011 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. Expedited coordination data for this earth station was sent to the below listed carriers with a letter dated March 7, 2011. Company AT&T COMM. OF THE SOUTH CENTRAL STATES American National Insurance Company Bell Atlantic Mobile Allentown-Verizon W CENTERPOINT ENERGY INC Calcasieu Parish Sheriff's Office Centennial Southeast License Company LLC Central Telephone Company of Texas Cleco Power LLC ENTERPRISE PRODUCTS OPERATING LLC ERF Wireless Bundled Services, Inc. Equistar Chemicals, LP GTE Mobilnet of South Texas LTD Partners GTE Mobilnet of Texas RSA #17 LTD Prtnsh Great Western Communications, LLC Greater Harris County 911 Emergency Net Harris County ITC Houston, City of International Communications Group, Inc. JASPER NEWTON ELECTRIC COOPERATIVE Lake Charles Harbor Police Lousiana Dept. of Transportation and Dev MCI Communications Services Inc. METROPOLITAN AREA NETWORKS, INC. Sam Houston Electric Cooperative San Antonio MTA, L.P. Southern & Central Wireless, LLC Stratos Offshore Services Company TEXAS NEW MEXICO POWER COMPANY Texas Eastern Communications, Inc. Transcontinental Gas Pipeline Corp. Trunkline Gas Company, LLC Union Pacific Railroad Company Verizon Wireless Louisiana LLC Verizon Wireless Texas, LLC Frequency Coordination and Interference Analysis Report 04/07/2011 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 04/07/2011 Page 6 of 10

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 04/07/2011 Job Number: 110307COMSGE09 Administrative Information Status ENGINEER PROPOSAL Call Sign Licensee Code ENPROD Licensee Name ENTERPRISE PRODUCTS OPERATING LLC Site Information PORT ARTHUR, TX Venue Name Latitude (NAD 83) 29° 59' 46.8" N Longitude (NAD 83) 94° 3' 57.2" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 5.4 m / 17.7 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Digital Satellite Arc 60° W to 143° West Longitude Azimuth Range 126.5° to 246.5° Corresponding Elevation Angles 39.1° / 26.9° Antenna Centerline (AGL) 2.74 m / 9.0 ft Antenna Information Receive Transmit Manufacturer Andrew Corp. Andrew Corp. Model 2.4 Meter 2.4 Meter Gain / Diameter 38.0 dBi / 2.4 m 42.0 dBi / 2.4 m 3-dB / 15-dB Beamwidth 1.10° / 1.95° 0.65° / 1.23° Max Available RF Power (dBW/4 kHz) -14.1 (dBW/MHz) 9.9 Maximum EIRP (dBW/4 kHz) 27.9 (dBW/MHz) 51.9 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) 205KG7W - 512KG7W / 3700.0 - 4200.0 205KG7W - 512KG7W / 5925.0 - 5957.0 205KG7W - 512KG7W / 6170.0 - 6209.0 205KG7W - 512KG7W / 6333.0 - 6386.0 205KG7W - 512KG7W / 6422.0 - 6425.0 Max Great Circle Coordination Distance 328.5 km / 204.1 mi 150.0 km / 93.2 mi Precipitation Scatter Contour Radius 492.8 km / 306.2 mi 100.0 km / 62.1 mi Frequency Coordination and Interference Analysis Report 04/07/2011 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 PORT ARTHUR, TX Licensee Name ENTERPRISE PRODUCTS OPERATING LLC Latitude (NAD 83) 29° 59' 46.8" N Longitude (NAD 83) 94° 3' 57.2" W Ground Elevation (AMSL) 5.4 m / 17.7 ft Antenna Centerline (AGL) 2.74 m / 9.0 ft Antenna Model Andrew 2.4 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 -14.1 (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 0.00 110.86 -10.00 285.28 -10.00 132.57 5 0.00 113.91 -10.00 285.28 -10.00 132.57 10 0.00 110.24 -10.00 285.28 -10.00 132.57 15 0.00 106.51 -10.00 285.28 -10.00 132.57 20 0.00 102.72 -10.00 285.28 -10.00 132.57 25 0.00 98.88 -10.00 285.28 -10.00 132.57 30 0.00 95.02 -10.00 285.28 -10.00 132.57 35 0.00 91.15 -10.00 285.28 -10.00 132.57 40 0.00 87.27 -10.00 285.28 -10.00 132.57 45 0.00 83.40 -10.00 285.28 -10.00 132.57 50 0.00 79.55 -10.00 285.28 -10.00 132.57 55 0.00 75.73 -10.00 285.28 -10.00 132.57 60 0.00 71.96 -10.00 285.28 -10.00 132.57 65 0.00 68.25 -10.00 285.28 -10.00 132.57 70 0.00 64.63 -10.00 285.28 -10.00 132.57 75 0.00 61.10 -10.00 285.28 -10.00 132.57 80 0.00 57.70 -10.00 285.28 -10.00 132.57 85 0.00 54.45 -10.00 285.28 -10.00 132.57 90 0.00 51.39 -10.00 285.28 -10.00 132.57 95 0.00 48.56 -10.00 285.28 -10.00 132.57 100 0.00 46.01 -9.57 288.03 -9.57 133.73 105 0.00 43.77 -9.03 291.53 -9.03 133.95 110 0.00 41.92 -8.56 294.61 -8.56 135.25 115 0.00 40.49 -8.18 297.09 -8.18 136.31 120 0.00 39.55 -7.93 298.79 -7.93 137.04 125 0.00 39.13 -7.81 299.58 -7.81 137.38 130 0.00 39.24 -7.84 299.37 -7.84 137.29 135 0.00 39.88 -8.02 298.20 -8.02 136.78 140 0.00 41.02 -8.32 296.16 -8.32 135.91 145 0.00 42.62 -8.74 293.41 -8.74 134.74 150 0.00 44.64 -9.24 290.14 -9.24 133.37 155 0.00 47.01 -9.81 286.52 -9.81 133.10 160 0.00 49.62 -10.00 285.28 -10.00 132.57 165 0.00 51.88 -10.00 285.28 -10.00 132.57 170 0.00 53.59 -10.00 285.28 -10.00 132.57 175 0.00 54.67 -10.00 285.28 -10.00 132.57 180 0.00 55.03 -10.00 285.28 -10.00 132.57 185 0.00 54.67 -10.00 285.28 -10.00 132.57 Frequency Coordination and Interference Analysis Report 04/07/2011 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 PORT ARTHUR, TX Licensee Name ENTERPRISE PRODUCTS OPERATING LLC Latitude (NAD 83) 29° 59' 46.8" N Longitude (NAD 83) 94° 3' 57.2" W Ground Elevation (AMSL) 5.4 m / 17.7 ft Antenna Centerline (AGL) 2.74 m / 9.0 ft Antenna Model Andrew 2.4 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 -14.1 (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 0.00 53.59 -10.00 285.28 -10.00 132.57 195 0.00 51.88 -10.00 285.28 -10.00 132.57 200 0.00 49.62 -10.00 285.28 -10.00 132.57 205 0.00 46.91 -9.78 286.67 -9.78 133.16 210 0.00 43.84 -9.05 291.42 -9.05 133.90 215 0.00 40.48 -8.18 297.12 -8.18 136.32 220 0.00 37.04 -7.22 303.60 -7.22 139.11 225 0.00 33.92 -6.26 310.17 -6.26 141.99 230 0.00 31.24 -5.37 317.08 -5.37 144.80 235 0.00 29.10 -4.60 322.56 -4.60 147.28 240 0.00 27.63 -4.04 326.58 -4.04 149.13 245 0.00 26.96 -3.77 328.51 -3.77 150.03 250 0.00 27.14 -3.84 327.99 -3.84 149.79 255 0.00 28.15 -4.24 325.13 -4.24 148.46 260 0.00 29.91 -4.90 320.42 -4.90 146.31 265 0.00 32.29 -5.73 314.53 -5.73 143.65 270 0.00 35.18 -6.66 307.44 -6.66 140.79 275 0.00 38.44 -7.62 300.87 -7.62 137.93 280 0.00 42.00 -8.58 294.46 -8.58 135.19 285 0.00 45.78 -9.52 288.37 -9.52 133.87 290 0.00 49.74 -10.00 285.28 -10.00 132.57 295 0.00 53.82 -10.00 285.28 -10.00 132.57 300 0.00 58.01 -10.00 285.28 -10.00 132.57 305 0.00 62.27 -10.00 285.28 -10.00 132.57 310 0.00 66.59 -10.00 285.28 -10.00 132.57 315 0.00 70.96 -10.00 285.28 -10.00 132.57 320 0.00 75.37 -10.00 285.28 -10.00 132.57 325 0.00 79.80 -10.00 285.28 -10.00 132.57 330 0.00 84.24 -10.00 285.28 -10.00 132.57 335 0.00 88.70 -10.00 285.28 -10.00 132.57 340 0.00 93.16 -10.00 285.28 -10.00 132.57 345 0.00 97.61 -10.00 285.28 -10.00 132.57 350 0.00 102.05 -10.00 285.28 -10.00 132.57 355 0.00 106.47 -10.00 285.28 -10.00 132.57 Frequency Coordination and Interference Analysis Report 04/07/2011 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 7, 2011 Frequency Coordination and Interference Analysis Report 04/07/2011 Page 10 of 10


Document Created: 2011-04-07 21:41:24
Document Modified: 2011-04-07 21:41:24
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