Attachment Coordination

This document pretains to SES-STA-20100621-00724 for Special Temporal Authority on a Satellite Earth Station filing.

IBFS_SESSTA2010062100724_823619

19700 Janelia Farm Boulevard Ashbum, VA 20147 f (703) 726—5500 Fax (703) 726—5000 COMSEARCH® hitpuwanm.comsearch.com June 21, 2010 deinonnievactaat t dn *** CLIENT COPY *** *** PLEASE MAIL *** *** TO CUSTOMER *** Re: Frontier Drilling USA, Inc. Vioska Knoll 252, Gulf of Mexico C—Band Transmit—Receive Earth Station Job Number: 100621COMSICO4 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 Frontier Drilling USA, Inc., 1000 Louisiana Avenue, Houston, Texas 77002 for a proposed C—band transmit/receive earth station to be located at Vioska Knoll 252, in the Guif 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 July 21, 2010. if there are any questions concerning this coordination notice, please contact Comsearch. Sincerely, COMSEARCH UA\— Jefffey E. Cowles Principal Frequency Planner Enclosure(s)

Page 1 of 3 COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashbumn, VA 20147 (703)726—5660 http:/www.comsearch.com Date: 06/21/2010 Job Number: 100621COMSUICO4 Administrative Information Status ENGINEER PROPOSAL Call Sign Licensee Code FRODRI Licensee Name Frontier Drilling USA, Inc. Site Information VIOSKA KNOLL 252, GULF of MEXICO Venue Name Latitude (NAD 83) 28° 44‘ 12.0° N Longitude (NAD 83) 88° 23‘ 13.0" W Climate Zone B Rain Zone 1 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 139° West Longitude Azimuth Range 131.7° to 248.5° Corresponding Elevation Angles 44.3° / 26.0° Antenna Centerline (AGL) 21.34 m / 70.0 ft Antenna Information Receive Transmit Manufacturer SeaTel SeaTel Model 9797 9797 Gain / Diameter 38.5 dBi / 2.4 m 41.3 dBi / 2.4 m 3—dB / 15—dB Beamwidth 2.00° / 3.80° 1.50° / 2.80° 450KGZW to 9OOKGTW Max Available RF Power (dBW/4 kHz) 54 54 (dBW/MHz) 15.1 181 Maximum EIRP (dBW/4 kHz) 35.9 35.9 (dBW/MHz) 56.4 59.4 (dBW) 56.4 59.4 Interference Objectives: Long Term —156.0 dBW/MHz 20% —154.0 dBW/4 kHz 20% Short Term +146.0 dBW/MHz 0.01% —181.0 dBW/4 kHz 0.0025% Frequency Information Receive 4.0 GHz Transmit 6.1 GHz Emission / Frequency Range (MHz) 450KG7W — 900KG7W / 3700.0 » 4200.0 450KG7W — 900KGTZW / 5925.0 — 6425.0 Max Great Circle Coordination Distance 502.4 km / 312.2 mi 224.1 km / 139.2 mi Precipitation Scatter Contour Radius 566.9 km / 352.2 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 VIOSKA KNOLL 252, GM Licensee Name Frontier Drilling USA, Inc. Latitude (NAD 83) 28° 44‘ 12.0" N Longitude (NAD 83) 88° 29‘ 13.0" W Ground Elevation (AMSL) 0.0 m / 0.0 ft Antenna Centerline (AGL) 21.34 m / 70.0 ft Antenna Model SeaTel 9797 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 5.4 (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 0.00 109.27 +10.00 412.20 +10.00 185.53 5 0.00 113.68 —10.00 412.20 ~10.00 185.53 10 0.00 112.08 ~10.00 412.20 —10.00 185.53 15 0.00 108.74 ~10.00 412.20 ~10.00 185.53 20 0.00 105.33 ~10.00 412.20 —10.00 185.53 25 0.00 101.85 ~10.00 412.20 ~10.00 185.53 30 0.00 98.32 +10.00 412.20 ~10.00 185.53 35 0.00 94.77 +10.00 412.20 ~10.00 185.53 40 0.00 91.19 +10.00 412.20 ~10.00 185.53 45 0.00 87.61 ~10.00 412.20 ~10.00 185.53 50 0.00 84.04 ~10.00 412.20 ~10.00 185.53 55 0.00 80.49 ~10.00 412.20 +10.00 185.53 60 0.00 76.98 +10.00 412.20 +10.00 185.53 65 0.00 73.52 —10.00 412.20 +10.00 185.53 70 0.00 70.18 —10.00 412.20 —10.00 185.53 75 0.00 66.82 ~10.00 412.20 —10.00 185.53 80 0.00 63.63 ~10.00 412.20 —10.00 185.53 85 0.00 60.56 ~10.00 412.20 ~10.00 185.53 90 0.00 57.65 ~10.00 412.20 ~10.00 185.53 95 0.00 54.94 —10.00 412.20 ~10.00 185.53 100 0.00 52.44 —10.00 412.20 +10.00 185.53 105 0.00 50.21 —10.00 412.20 —10.00 185.53 110 0.00 48.27 —10.00 412.20 —10.00 185.53 115 0.00 46.68 —9.73 415.58 —9.73 186.98 120 0.00 45.46 —9.44 419.18 —9.44 188.51 125 0.00 44.66 —9.25 421.64 —9.25 189.56 130 0.00 44.29 —9.16 422.79 —9.16 190.05 135 0.00 44.36 —9.18 422.56 —9.18 189.95 140 0.00 44.88 —9.30 420.96 —9.30 189.27 145 0.00 45.83 —9.53 418.09 —9.53 188.05 150 0.00 47.17 ~9.84 414.16 —9.84 186.37 155 0.00 48.89 —10.00 412.20 —10.00 185.53 160 0.00 50.98 —10.00 412.20 —10.00 185.53 165 0.00 58.17 ~10.00 412.20 —10.00 185.53 170 0.00 54.96 +10.00 412.20 ~10.00 185.53 175 0.00 56.09 +10.00 412.20 +10.00 185.53 180 0.00 56.47 +10.00 412.20 ~10.00 185.53 185 0.00 56.09 ~10.00 412.20 ~10.00 185.53

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 VIOSKA KNOLL 252, GM Licensee Name Frontier Drilling USA, Inc. Latitude (NAD 83) 28° 44‘ 12.0" N Longitude (NAD 83) 88° 23 13.0" W Ground Elevation (AMSL) 0.0 m / 0.0 ft Antenna Centerline (AGL) 21.34 m / 70.0 ft Antenna Model SeaTel 9797 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 —5.4 (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 54.96 ~10.00 412.20 —10.00 185.53 195 0.00 53.17 ~10.00 412.20 +10.00 185.53 200 0.00 50.82 ~10.00 412.20 ~10.00 185.53 205 0.00 48.01 ~10.00 412.20 ~10.00 185.53 210 0.00 44.84 —9.29 421.09 —9.29 189.33 215 0.00 41.38 —8.42 432.28 8. 42 194.09 220 0.00 37.79 =7. 44 445.32 7. 44 200.00 225 0.00 34.46 —6.43 458.99 —6.43 205.77 230 0.00 31.50 —5.46 472.01 —5.46 211.49 235 0.00 29.05 ~4.58 484.70 ~4.58 216.76 240 0.00 27.24 —3.88 495.03 —3.88 221.02 245 0.00 26.21 —3.46 501.37 ~3.46 223.62 250 0.00 26.04 —3.39 502.45 —3.39 224.06 255 0.00 26.75 —3.68 498.02 —3.68 222.24 260 0.00 28.28 ~4.29 489.02 ~4.29 218.54 265 0.00 30.50 +5.11 477.05 5.11 213.58 270 0.00 33.28 +6.05 464.26 —6.05 207.98 275 0.00 36.48 ~7.05 450.51 —7.05 202.20 280 0.00 40.00 —8.05 437.11 ~8.05 196.52 285 0.00 43.77 —9.03 424.43 —9.03 190.75 290 0.00 47.72 —9.97 412.60 —9.97 185.70 295 0.00 51.81 ~10.00 412.20 ~10.00 185.53 300 0.00 56.01 ~10.00 412.20 ~10.00 185.53 305 0.00 60.30 ~10.00 412.20 +10.00 185.53 310 0.00 64.64 —10.00 412.20 ~10.00 185.53 315 0.00 69.04 —10.00 412.20 ~10.00 185.53 320 0.00 7347 ~10.00 412.20 —10.00 185.53 325 0.00 77.93 ~10.00 412.20 ~10.00 185.53 330 0.00 82.40 ~10.00 412.20 +10.00 185.53 335 0.00 86.89 ~10.00 412.20 ~10.00 185.53 340 0.00 91.39 ~10.00 412.20 +10.00 185.53 345 0.00 95.83 ~10.00 412.20 ~10.00 185.53 350 0.00 100.36 —10.00 412.20 ~10.00 185.53 355 0.00 104.83 ~10.00 412.20 ~10.00 185.53


Document Created: 2010-06-21 16:59:22
Document Modified: 2010-06-21 16:59:22
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