Attachment Freq Coordination

This document pretains to SES-STA-20070820-01108 for Special Temporal Authority on a Satellite Earth Station filing.

IBFS_SESSTA2007082001108_589274

19700 Janelia Farm Boulevard Ashbumn, VA 20147 f (703) 726—5500 Fax (708) 726—5600 COMSEARCH® hitp/www.comsearch.com August 23, 2007 seleisieieleeieieteteieteiieteetetetetedeitdese *** CLIENT COPY *** *** PLEASE MAIL *** *** TO CUSTOMER *** Re: ALASCOM, Inc. Selawik, Alaska Call Sign: E2199 C—Band Transmit—Receive Earth Station Job Number: 070823COMSICO2 swooocee+** EXPEDITED LICENSE MODIFICATION ********** ****** RESPONSE REQUESTED BY AUGUST 30, 2007 ****** 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 expedited coordination data on behalf of ALASCOM, Inc. to modify the license (E2199) of their existing C—band transmit/receive earth station near Selawik, Alaska. 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). Please update your database with the attached information. 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 were not previously reported, please contact Comsearch by August 30, 2007. 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: 08/23/2007 Job Number: 070823COMSICO2 Administrative Information Status ENGINEER PROPOSAL Call Sign E2199 Licensee Code P1040 Licensee Name ALASCOM, INC. Site Information SELAWIK, ALASKA Venue Name Latitude (NAD 83) 66° 36‘ 24.5" N Longitude (NAD 83) 160° 0‘ 52.9" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 10.7 m / 35.1 ft Link Information Satellite Type Geostationary Mode TR — Transmit—Receive Modulation Digital Satellite Arc 107° W to 150° West Longitude Azimuth Range 124.7° to 1869.1° Corresponding Elevation Angles 5.2° / 14.6° Antenna Centerline (AGL) 4.57 m / 15.0 ft Antenna Information Receive Transmit Manufacturer Andrew Corporation Andrew Corporation Model ESA45—39239 ESA45—39239 Gain / Diameter 43.0 dBi / 4.5 m 46.5 dBi / 4.5 m 3—dB / 15—dB Beamwidth 1.20° / 2.50° 0.80° / 1.52° 42K7GTW to 2MOGG7W Max Available RF Power {dBW/A4 kHz) —2.7 4111 (dBW/MHz) 7.6 12.9 Maximum EIRP (dBW/AkHz) 43.8 35.4 (dBW/MHz) 54.1 59.4 (dBw) 541 62.5 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) 42K7GTW — 2MOGG7W / 3700.0 — 4200.0 42K7GTW — 2MO6G7ZW / 5925.0 — 6425.0 Max Great Circle Coordination Distance 574.0 km / 356.6 mi 330.8 km / 205.6 mi Precipitation Scatter Contour Radius 616.6 km / 383.1 mi 101.6 km / 63.1 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 SELAWIK, AK Licensee Name ALASCOM, INC. Latitude (NAD 83) 66° 36‘ 24.5" N Longitude (NAD 83) 160° 0‘ 52.9" W Ground Elevation (AMSL) 10.7 m / 35.1 ft Antenna Centerline (AGL) 4.57 m / 15.0 ft Antenna Model Andrew Corporation ESA45—39239 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 ~2.7 (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 0.62 124.53 ~10.00 242.20 ~10.00 133.58 5 0.62 119.55 ~10.00 242.20 —10.00 133.58 10 0.62 114.57 —10.00 242.20 —~10.00 133.58 15 0.58 109.59 ~10.00 244.72 ~10.00 135.48 20 0.58 104.61 ~10.00 244.71 ~10.00 135.47 25 0.58 99.63 10.00 244.80 ~10.00 135.54 30 0.54 94.64 ~10.00 247 .32 ~10.00 137.47 35 0.54 89.66 ~10.00 247.34 —10.00 137.49 40 0.66 84.67 —10.00 239.75 ~10.00 133.00 45 0.66 79.69 ~10.00 239.79 ~10.00 133.03 50 0.66 74.71 ~10.00 239.78 —10.00 133.02 55 1.02 69.71 ~10.00 219.66 —10.00 117.09 60 1.02 64.73 —10.00 219.58 ~10.00 117.03 65 1.02 59.74 ~10.00 219.62 —10.00 117.07 70 1.02 54.76 —10.00 219.60 ~10.00 117.04 75 0.47 49.82 ~10.00 252.68 ~10.00 141.56 80 0.46 44.85 —9.29 258.89 —9.29 145.54 85 0.46 39.89 —8.02 266.69 —8.02 150.01 90 0.46 34.93 —6.58 275.85 —6.58 155.31 95 0.46 29.99 —4.93 286.94 —4.93 161.95 100 0.42 25.08 ~2.98 305.50 —2.98 175.94 105 0.42 20.20 —0.63 323.48 —0.63 185.77 110 0.62 15.33 2.36 327.44 2.36 183.97 115 0.62 10.66 6.31 359.80 6.31 201.04 120 0.62 6.50 11.68 406.19 11.68 223.42 125 0.62 4.55 15.55 574.00 15.55 330.85 130 0.66 5.96 12.61 510.46 12.61 284.76 135 0.66 7.44 10.21 454.85 10.21 249.12 140 0.66 8.80 8.39 412.02 8.39 224.64 145 0.66 10.04 6.96 378.37 6.96 208.94 150 0.66 1114 5.83 352.71 5.83 196.83 155 0.62 1214 4.90 348.03 4.90 195.08 160 0.62 12.93 4.21 342.25 4.24 192.06 165 0.62 13.56 3.70 338.08 3.70 189.81 170 0.62 14.01 3.34 335.21 3.34 188.25 175 0.62 1515 249 328.41 2.49 184.50 180 0.62 17.65 0.83 315.37 0.83 177 12 185 0.62 21.04 ~1.08 300.30 ~1.08 168.61

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 SELAWIK, AK Licensee Name ALASCOM, INC. Latitude (NAD 83) 66° 36‘ 24.5" N Longitude (NAD 83) 160° 0‘ 52.9" W Ground Elevation {(AMSL) 10.7 m / 35.1 ft Antenna Centerline (AGL) 4.57 m 1 15.0 ft Antenna Model Andrew Corporation ESA45—39239 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 —2.7 (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 0.62 24.96 —2.93 287.00 —2.93 158.90 195 0.62 29.19 ~4.63 275.36 —4.63 151.93 200 0.62 33.62 —6.16 265.34 —6.16 146.11 205 0.62 38.17 —7.54 256.81 —7.54 141.41 210 0.62 42.81 —8.79 24915 —8.79 137.30 215 0.62 47.51 —9.92 242.66 —9.92 133.83 220 0.62 52.26 ~10.00 242.21 —~10.00 133.59 225 0.62 57.03 —10.00 242.24 —10.00 133.61 230 0.62 61.83 —10.00 242.23 —10.00 133.61 235 0.62 66.65 —10.00 242.24 —10.00 133.61 240 0.62 71.48 —10.00 242.22 —10.00 133.60 245 0.62 76.31 —10.00 242.25 ~10.00 133.62 250 0.62 81.16 ~10.00 242.25 ~10.00 133.62 255 0.62 86.01 ~10.00 242.22 ~10.00 133.60 260 0.62 90.86 —10.00 242.26 —10.00 133.62 265 0.62 95.71 ~10.00 242.23 ~10.00 133.60 270 0.62 100.56 ~10.00 242.24 ~10.00 133.61 275 0.62 105.41 ~10.00 242.26 —10.00 133.63 280 0.62 110.24 ~10.00 242.21 —10.00 133.59 285 0.62 115.07 ~10.00 242.25 —10.00 133.62 290 0.62 119.88 —~10.00 242.22 ~10.00 133.60 295 0.62 124.67 —10.00 242.20 10.00 133.59 300 0.62 129.43 ~10.00 242.20 —10.00 133.58 305 0.62 134.16 ~10.00 242.25 ~10.00 133.62 310 0.62 138.84 ~10.00 242.28 ~10.00 133.64 315 0.62 143.46 —10.00 242.28 ~10.00 133.64 320 0.62 147.97 —~10.00 242.25 —10.00 133.62 325 0.62 152.34 —10.00 242.24 —10.00 133.61 330 0.62 154.28 —10.00 242.22 —10.00 133.60 335 0.62 149.35 ~10.00 242.27 ~10.00 133.64 340 0.62 144.40 ~10.00 24217 —10.00 133.56 345 0.94 139.47 ~10.00 223.38 —10.00 120.18 350 0.94 134.50 ~10.00 223.39 —~10.00 120.19 355 0.62 129.51 ~10.00 242.20 —10.00 133.58


Document Created: 2007-08-23 11:35:09
Document Modified: 2007-08-23 11:35:09
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