Attachment Preliminary Analysis

This document pretains to SES-STA-20100204-00164 for Special Temporal Authority on a Satellite Earth Station filing.

IBFS_SESSTA2010020400164_799618

19700 Janelia Farm Boulevard Ashburn, VA 20147 m (703) 726—5500 Fax (703) 726—5000 COMSEARCH® hitpuiwaw.comsearch.com January 29, 2010 eonesaoisiactaeideieiciatcn *** CLIENT COPY *** *** PLEASE MAIL *** *** TO CUSTOMER *** Re: Shell Communications Brazos—19 (Oil Platform), Gulf of Mexico C—Band, Transmit—Receive Earth Station Job Number: 100129COMSICO4 Dear Frequency Coordinator: This notice is being provided in accordance with Section 25.203(c) of the FCC Rules and Regulations. We are forwarding the attached coordination data on behalf of Shell Communications, Houston, Texas 77252 for a proposed C—band, transmit/receive earth station to be located on an oil platform designated Brazos—19, in the Gulf of Mexico. The coordination notice is being circulated to the owners (or their protection agents) of all existing or proposed terrestrial facilities operating in a shared frequency band within the coordination contours of the proposed station(s). We respectfully request that you examine this data for its interference potential with your system(s). In the event that your analysis identifies potential interference cases that have not been resolved, please contact Comsearch by March 1, 2010. If there are any questions concerning this coordination notice, please contact Comsearch. Sincerely, COMSEARCH Jeffrey E. Cowles Principal Frequency Planner Enclosure(s)

Page 1 of 3 COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726—5660 http:/www.comsearch.com Date: 01/29/2010 Job Number: 100129COMSICO4 Administrative Information Status ENGINEER PROPOSAL Call Sign Licensee Code SHEINT Licensee Name Shell Communications Site Information BRAZOS—19 (Oil Platform), GULF of MEXICO Venue Name Latitude (NAD 83) 28° 10‘ 30.0" N Longitude (NAD 83) 95° 35‘ 7.2" W Climate Zone B Rain Zone 2 Ground Elevation (AMSL) 0.0 m / 0.0 ft Link Information Satellite Type Geostationary Mode TR — Transmit—Receive Modulation Digital Satellite Arc 60° W to 143° West Longitude Azimuth Range 123.4° to 246.5° Corresponding Elevation Angles 39.1°/29.0° Antenna Centerline (AGL) 30.48 m / 100.0 ft Antenna Information Receive Transmit Manufacturer Andrew Corporation Andrew Corporation Model Type 243 Type 243 Gain / Diameter 38.0 dBi / 2.4 m 42.0 dBi / 2.4 m 3—dB / 15—dB Beamwidth 2.16° / 4.00° 1.36° / 2.54° 1M81G7W to 4M80G7W Max Available RF Power (dBW/ kHz) 20.6 —20.6 (dBW/MHz) 3.4 3.4 Maximum EIRP (dBW/HA4 kHz) 214 214 (dBW/MHz) 45.4 45.A (dBWw) 48.0 51.7 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) 1MB1G7W — 4M3OGZW / 3700.0 — 4200.0 1MB1G7W — 4M3OGTW / 5925.0 — 6425.0 Max Great Circle Coordination Distance 484.7 km / 301.1 mi 141.5 km / 87.9 mi Precipitation Scatter Contour Radius 490.2 km / 304.6 mi 100.0 km / 62.1 mi

Page 2 of 3 COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726—5660 http://www.comsearch.com Coordination Values BRAZOS—19 (Oil Platform), GM Licensee Name Shell Communications Latitude (NAD 83) 28° 10‘ 30.0" N Longitude (NAD 83) 95° 35 7.2" W Ground Elevation (AMSL) 0.0 m / 0.0 ft Antenna Centerline (AGL) 30.48 m / 100.0 ft Antenna Model Andrew Corporation Type 243 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 —20.6 (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 0.00 110.37 ~10.00 412.20 ~10.00 128.44 5 0.00 111.69 +10.00 412.20 ~10.00 123.44 10 0.00 107.98 ~10.00 412.20 —10.00 123.44 15 0.00 104.21 ~10.00 412.20 ~10.00 123.44 20 0.00 100.38 ~10.00 412.20 +10.00 123.44 25 0.00 96.53 ~10.00 412.20 +10.00 123.44 30 0.00 92.66 ©10.00 412.20 —10.00 128.44 35 0.00 88.77 ~10.00 412.20 —10.00 123.44 40 0.00 84.90 ~10.00 412.20 —10.00 128.44 45 0.00 81.03 ~10.00 412.20 ~10.00 123.44 50 0.00 77.20 +10.00 412.20 ~10.00 123.44 550 _ 0.00 73.41 +10.00 412.20 —10.00 123.44 60 0.00 69.67 +10.00 412.20 ~10.00 123.44 65 0.00 66.01 ~10.00 412.20 ~10.00 123.44 70 0.00 62.43 ~10.00 412.20 —10.00 123.44 75 0.00 58.98 ~10.00 412.20 —10.00 123.44 80 0.00 55.67 ~10.00 412.20 —10.00 123.44 85 0.00 52.53 ~10.00 412.20 ~10.00 123.44 90 0.00 49.60 ~10.00 412.20 ~10.00 123.44 95 0.00 46.93 —9.79 414.87 —9.79 124.07 100 0.00 44.56 —9.22 421.96 ~9.22 125.77 105 0.00 42.54 —8.72 428.39 ~8.72 127.31 110 0.00 40.95 —8.31 493.79 —8.31 128.63 115 0.00 39.81 —8.00 497.80 —8.00 129.61 120 0.00 39.18 —7.83 440.09 —7.83 130.17 125 0.00 39.08 —7.80 440.46 —7.80 130.26 130 0.00 39.52 —7.92 438.86 —7.92 129.87 135 0.00 40.47 —8.18 485.45 —8.18 129.03 140 0.00 41.90 —8.56 430.52 —8.56 127.83 145 0.00 43.77 +9.03 424.42 —9.03 126.36 150 0.00 46.01 —9.57 417.54 —9.57 124.71 155 0.00 48.58 ~10.00 412.20 —10.00 123.44 160 0.00 51.35 ~10.00 412.20 ~10.00 123.44 165 0.00 53.74 ~10.00 412.20 ~10.00 123.44 170 0.00 55.57 ~10.00 412.20 —10.00 123.44 175 0.00 56.72 —10.00 412.20 +10.00 123.44 180 0.00 57.12 ~10.00 412.20 —10.00 123.44 185 0.00 56.72 ©10.00 412.20 ~10.00 123.44

Page 3 of 3 COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726—5660 http://www.comsearch.com Coordination Values BRAZOS—19 (Oil Platform), GM Licensee Name Shell Communications Latitude (NAD 83) 28° 10‘ 30.0" N Longitude (NAD 83) 95° 35‘7.2" W Ground Elevation (AMSL) 0.0 m / 0.0 ft Antenna Centerline (AGL) 30.48 m / 100.0 ft Antenna Model Andrew Corporation Type 243 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 dBwW/MHz 0.01% —131.0 dBW/4 kHz 0.0025% Max Available RF Power 20.6 (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 55.57 ~10.00 412.20 —19.00 123.44 195 0.00 53.74 ~10.00 412.20 ~10.00 123.44 200 0.00 51.35 ~10.00 412.20 ~10.00 123.44 205 0.00 48.49 ~10.00 412.20 ~10.00 123.44 210 0.00 45.28 —9.40 419.75 —9.40 125.24 215 0.00 41.82 —8.53 430.81 —8.53 127.90 220 0.00 38.53 —7.64 442.52 7.54 130.76 225 0.00 35.57 —6.78 454.23 —6.78 133.67 230 0.00 33.04 —5.98 464.70 —5.98 136.45 235 0.00 31.04 —5.30 474.29 —5.30 138.88 240 0.00 29.69 ~4.81 481.30 ~4.81 140.66 245 0.00 29.06 ~4.58 484.68 —4.58 141.53 250 0.00 29.21 ~4.64 483.86 —4.64 141.32 255 0.00 30.13 ~4.97 478.98 ~4.97 140.07 260 0.00 31.74 —5.54 470.85 5.54 138.01 265 0.00 33.96 —6.27 461.18 —6.27 135.41 270 0.00 36.66 ~711 449.76 711 182.55 275 0.00 39.76 —7.99 437.99 —7.99 129.65 280 0.00 43.15 —8.88 426.39 +8.88 126.83 285 0.00 46.79 —9.75 415.27 —9.75 124.17 290 0.00 50.60 ~10.00 412.20 —10.00 123.44 295 0.00 54.56 ~10.00 412.20 —10.00 123.44 300 0.00 58.63 ~10.00 412.20 ~10.00 123.44 305 0.00 62.78 ~10.00 412.20 ~10.00 123.44 310 0.00 67.00 —10.00 412.20 ~10.00 123.44 315 0.00 71.27 +10.00 412.20 —10.00 123.44 320 0.00 75.59 —10.00 412.20 ~10.00 123.44 325 0.00 79.93 ~10.00 412.20 ~10.00 123.44 330 0.00 84.28 ~10.00 412.20 —10.00 123.44 335 0.00 88.65 +10.00 412.20 +10.00 123.44 340 0.00 93.03 ~10.00 412.20 —10.00 123.44 345 0.00 97.39 —10.00 412.20 +10.00 123.44 350 0.00 101.74 ~10.00 412.20 ~10.00 123.44 355 0.00 106.08 ~10.00 412.20 ~10.00 123.44


Document Created: 2010-02-01 13:03:37
Document Modified: 2010-02-01 13:03:37
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