RigNet Coordination

LETTER submitted by RigNet SatCom, Inc.

Coordination Notification

2015-04-30

This document pretains to SES-MOD-20131112-00965 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2013111200965_1087067

RigNet SatCom, Inc. Call Sign E980235 File No. SES-MOD-20131112-00965 NOTIFICATION CONCERNING COMPLETION OF C-BAND ESV COORDINATION NOBLE DISCOVERER, ALASKA April 30, 2015 RigNet SatCom, Inc. (“RigNet”) hereby submits, pursuant to Section 25.221(a)(12) of the Commission’s rules, 47 C.F.R. 25.221(a)(12), this notification of successfully completed C-band earth stations on vessel (“ESV”) frequency coordination. As specified in the Commission’s Public Notice DA 05-1671 released June 15, 2005, the following information is provided so that this notification may be placed on Public Notice: 1. Name and contact information of the frequency coordinator: a. Jeff Cowles, Comsearch, 19700 Janelia Farm Boulevard, Ashburn, VA 20147 / Phone: (703) 726-5500 / Email: jcowles@comsearch.com 2. Reference identification, date, and duration (if relevant) of the coordination report: a. Job Number 150422COMSJC02 / April 30, 2015 3. Frequency coordination method used: a. Coordination Contour method 4. Interference criteria used: a. Long Term: -156.0 dBW/MHz 20% / Short Term: -146.0 dBW/MHz 0.01% (Rx) b. Long Term: -154.0 dBw/4 kHz 20% / Short Term: -131.0 dBw/4 kHz 0.0025% (Tx) 5. Speed of coordinated vessel, if relevant: a. Not applicable (stationary rig). 6. Center frequencies, bandwidths, and total spectrum coordinated per satellite: a. Rx: 3700.0-4200.0 MHz; 692 kHz to 2 MHz; 500 megahertz. b. Tx: 5925.0-6425.0 MHz; 692 kHz to 2 MHz; 500 megahertz. Total spectrum coordinated – Full band, Permitted List arc (Note: current operations limited to IS-18 at 180E, Transponder: NH1C; less than 10 MHz in each direction of transmission.) 7. Name of satellite(s) and transponder(s) being used: a. Permitted Space Station List (IS-18 at 180E, Transponder: NH1C). b. Transponder Frequency Range: 5934-6006 MHz (Tx) / 3709-3781 MHz (Rx) (Note: current operations limited to less than 10 MHz in each direction of transmission.)

8. Textual description and scaled map of the geographic area(s) coordinated: a. Noble Discoverer rig in Alaska (71°18’30.9” N, 163°12’43.2” W). See also Area of Operations Exhibit. (Note: Rig operates only at the single, specified location in the Area of Operations) 9. 24/7 contact information for the ESV operator: a. Alexi Vederko, 1880 S. Dairy Ashford, Suite 300, Houston, TX 77077 / Phone: (832) 270- 0764 / Email alexi.vederko@rig.net. 10. Call sign of the hub station if independently license: a. E980235. 11. Statement indicating that as of the date of this notification there are no unresolved coordination requests which would result in an exceedance of the maximum 180 megahertz of coordinated spectrum for all ESV operations in the coordination area in Section 25.202(a)(8): a. The frequency coordinator advises that there are no unresolved coordination requests which would result in an exceedance of the maximum 180 megahertz of coordinated spectrum for all ESV operations in the coordination area in the 5925-6425 MHz band. Although the coordinator has confirmed that operations may be conducted throughout the C-band at the specified location, operations are currently limited to less the 10 MHz of spectrum in each direction of transmission on the specified satellite transponder. RigNet will provide a further notification to the Commission should circumstances warrant. RigNet respectfully requests that this notification of successfully completed frequency coordination be placed on Public Notice. Any further questions with respect to this matter should be directed to Carlos Nalda, LMI Advisors, at (571) 332-5626.

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for RigNet SatCom, Inc. Noble Discoverer, Alaska (Oil Platform) Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, Virginia 20147 April 30, 2015

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 04/30/2015 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 04/30/2015 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 04/30/2015 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 emailed and sent to the below listed carriers with a letter dated April 22, 2015. Company Comsearch Frequency Coordination and Interference Analysis Report 04/30/2015 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 04/30/2015 Page 6 of 10

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 04/30/2015 Job Number: 150422COMSJC02 Administrative Information Status ENGINEER PROPOSAL Call Sign Licensee Code RIGNET Licensee Name RigNet SatCom, Inc. Site Information NOBLE DISCOVERER, ALASKA Venue Name Latitude (NAD 83) 71° 18' 30.9" N Longitude (NAD 83) 163° 12' 43.2" 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 128° W to 198° West Longitude Azimuth Range 143.3° to 216.3° Corresponding Elevation Angles 6.5° / 6.6° Antenna Centerline (AGL) 30.48 m / 100.0 ft Antenna Information Receive Transmit Manufacturer Sea Tel Sea Tel Model 9797 9797 Gain / Diameter 38.5 dBi / 2.4 m 41.7 dBi / 2.4 m 3-dB / 15-dB Beamwidth 2.05° / 9.90° 1.43° / 2.68° 692KG7W and 2M34G7W Max Available RF Power (dBW/4 kHz) -7.6 -13.7 (dBW/MHz) 16.4 10.3 Maximum EIRP (dBW/4 kHz) 34.1 28.0 (dBW/MHz) 58.1 52.0 (dBW) 56.5 55.7 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) 692KG7W - 2M34G7W / 3700.0 - 4200.0 692KG7W - 2M34G7W / 5925.0 - 6425.0 Max Great Circle Coordination Distance 774.4 km / 481.1 mi 313.4 km / 194.7 mi Precipitation Scatter Contour Radius 615.1 km / 382.1 mi 100.0 km / 62.1 mi Frequency Coordination and Interference Analysis Report 04/30/2015 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 NOBLE DISCOVERER, AK Licensee Name RigNet SatCom, Inc. Latitude (NAD 83) 71° 18' 30.9" N Longitude (NAD 83) 163° 12' 43.2" W Ground Elevation (AMSL) 0.0 m / 0.0 ft Antenna Centerline (AGL) 30.48 m / 100.0 ft Antenna Model Sea Tel 9797 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 -7.6 (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 0.00 142.82 -10.00 412.20 -10.00 174.28 5 0.00 137.90 -10.00 412.20 -10.00 174.28 10 0.00 132.97 -10.00 412.20 -10.00 174.28 15 0.00 128.02 -10.00 412.20 -10.00 174.28 20 0.00 123.07 -10.00 412.20 -10.00 174.28 25 0.00 118.12 -10.00 412.20 -10.00 174.28 30 0.00 113.16 -10.00 412.20 -10.00 174.28 35 0.00 108.19 -10.00 412.20 -10.00 174.28 40 0.00 103.23 -10.00 412.20 -10.00 174.28 45 0.00 98.26 -10.00 412.20 -10.00 174.28 50 0.00 93.29 -10.00 412.20 -10.00 174.28 55 0.00 88.33 -10.00 412.20 -10.00 174.28 60 0.00 83.36 -10.00 412.20 -10.00 174.28 65 0.00 78.39 -10.00 412.20 -10.00 174.28 70 0.00 73.43 -10.00 412.20 -10.00 174.28 75 0.00 68.46 -10.00 412.20 -10.00 174.28 80 0.00 63.50 -10.00 412.20 -10.00 174.28 85 0.00 58.55 -10.00 412.20 -10.00 174.28 90 0.00 53.59 -10.00 412.20 -10.00 174.28 95 0.00 48.65 -10.00 412.20 -10.00 174.28 100 0.00 43.71 -9.01 424.62 -9.01 179.22 105 0.00 38.78 -7.72 441.56 -7.72 185.98 110 0.00 33.88 -6.25 461.54 -6.25 193.94 115 0.00 29.00 -4.56 485.01 -4.56 203.87 120 0.00 24.17 -2.58 514.89 -2.58 215.55 125 0.00 19.41 -0.20 553.14 -0.20 230.27 130 0.00 14.81 2.74 603.88 2.74 249.45 135 0.00 10.56 6.40 672.19 6.40 273.68 140 0.00 7.33 10.38 754.40 10.38 305.50 145 0.00 6.75 11.27 773.91 11.27 313.19 150 0.00 7.62 9.95 745.28 9.95 301.92 155 0.00 8.37 8.93 723.62 8.93 293.47 160 0.00 8.99 8.15 707.36 8.15 287.16 165 0.00 9.49 7.57 695.51 7.57 282.60 170 0.00 9.84 7.17 687.42 7.17 279.50 175 0.00 10.06 6.94 682.71 6.94 277.69 180 0.00 10.13 6.86 681.16 6.86 277.10 Frequency Coordination and Interference Analysis Report 04/30/2015 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 NOBLE DISCOVERER, AK Licensee Name RigNet SatCom, Inc. Latitude (NAD 83) 71° 18' 30.9" N Longitude (NAD 83) 163° 12' 43.2" W Ground Elevation (AMSL) 0.0 m / 0.0 ft Antenna Centerline (AGL) 30.48 m / 100.0 ft Antenna Model Sea Tel 9797 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 -7.6 (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) 185 0.00 10.06 6.93 682.70 6.93 277.69 190 0.00 9.85 7.17 687.40 7.17 279.49 195 0.00 9.49 7.57 695.48 7.57 282.59 200 0.00 8.99 8.15 707.36 8.15 287.16 205 0.00 8.37 8.94 723.68 8.94 293.49 210 0.00 7.61 9.96 745.47 9.96 302.00 215 0.00 6.74 11.29 774.38 11.29 313.38 220 0.00 7.60 9.98 745.75 9.98 302.10 225 0.00 10.95 6.01 664.46 6.01 270.75 230 0.00 15.23 2.43 598.43 2.43 247.40 235 0.00 19.84 -0.44 549.18 -0.44 228.75 240 0.00 24.60 -2.77 511.89 -2.77 214.39 245 0.00 29.44 -4.72 482.64 -4.72 202.94 250 0.00 34.31 -6.39 459.61 -6.39 193.17 255 0.00 39.22 -7.84 439.95 -7.84 185.33 260 0.00 44.14 -9.12 423.24 -9.12 178.68 265 0.00 49.08 -10.00 412.20 -10.00 174.28 270 0.00 54.03 -10.00 412.20 -10.00 174.28 275 0.00 58.98 -10.00 412.20 -10.00 174.28 280 0.00 63.94 -10.00 412.20 -10.00 174.28 285 0.00 68.90 -10.00 412.20 -10.00 174.28 290 0.00 73.86 -10.00 412.20 -10.00 174.28 295 0.00 78.82 -10.00 412.20 -10.00 174.28 300 0.00 83.79 -10.00 412.20 -10.00 174.28 305 0.00 88.76 -10.00 412.20 -10.00 174.28 310 0.00 93.72 -10.00 412.20 -10.00 174.28 315 0.00 98.69 -10.00 412.20 -10.00 174.28 320 0.00 103.65 -10.00 412.20 -10.00 174.28 325 0.00 108.62 -10.00 412.20 -10.00 174.28 330 0.00 113.58 -10.00 412.20 -10.00 174.28 335 0.00 118.54 -10.00 412.20 -10.00 174.28 340 0.00 123.49 -10.00 412.20 -10.00 174.28 345 0.00 128.44 -10.00 412.20 -10.00 174.28 350 0.00 133.38 -10.00 412.20 -10.00 174.28 355 0.00 138.31 -10.00 412.20 -10.00 174.28 Frequency Coordination and Interference Analysis Report 04/30/2015 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 30, 2015 Frequency Coordination and Interference Analysis Report 04/30/2015 Page 10 of 10



Document Created: 2015-04-30 21:48:51
Document Modified: 2015-04-30 21:48:51
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