Attachment Exhibit A

This document pretains to SES-LIC-INTR2018-08885 for License on a Satellite Earth Station filing.

IBFS_SESLICINTR201808885_1558348

Exhibit A Frequency Coordination

Exhibit A Page 1 of 10 FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT PREPARED FOR GENERAL COMMUNICATIONS INCORPORATED CHALKYITSIK, ALASKA SATELLITE EARTH STATION PREPARED BY COMSEARCH 19700 Janelia Farm Boulevard Ashburn, Virginia 20147 July 11, 2002

Exhibit A Page 2 of 10 TABLE OF CONTENTS CONCLUSIONS SUMMARY OF RESULTS SUPPLEMENTAL SHOWING, RE: PART 25.203(C) EARTH STATION COORDINATION DATA CERTIFICATION

Exhibit A Page 3 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.

Exhibit A Page 4 of 10 2. SUMMARY OF RESULTS NO GREAT CIRCLE INTERFERENCE CASES WERE IDENTIFIED DURING THE INTERFERENCE STUDY OF THE PROPOSED EARTH STATION. NO CARRIERS REPORTED POTENTIAL INTERFERENCE CASES.

Exhibit A Page 5 of 10 3. SUPPLEMENTAL SHOWING RE: PART 25.203(C) 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. COORDINATION FOR THIS EARTH STATION WAS CONDUCTED WITH THE BELOW LISTED CARRIERS. ALASCOM, INC.

Exhibit A Page 6 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 COMMON CARRIERS WITHIN ITS COORDINATION CONTOURS.

Exhibit A Page 7 of 10 SATELLITE EARTH STATION FREQUENCY COORDINATION DATA 07/05/2002 Company GENERAL COMMUNICATIONS INCRPORATED Earth Station Name, State CHALKYITSIK, AK Latitude (DMS) (NAD83) 66 39 15.7 N Longitude (DMS) (NAD83) 143 43 26.2 W Ground Elevation AMSL (Ft/m) 528.01 / 160.93 Antenna Centerline AGL (Ft/m) 6.99 / 2.13 Receive Antenna Type: §$40362 SCIENTIFIC—ATLANTA 8136 4.0 GHz Gain (dBi) / Diameter (m) 41.8 / 3.6 3 dB / 15 dB Half Beamwidth 0.70 / 1.50 Transmit Antenna Type: $60362 SCIENTIFIC—ATLANTA 8136 6.0 GHz Gain (dBi) / Diameter (m) 45.6 / 3.6 3 dB / 15 dB Half Beamnwidth 0.45 / 0.85 Operating Mode TRANSMIT AND RECEIVE Modulation DIGITAL Emission / Receive Band (MHz) 45KOGTW — 36M0G7TW / 3700.00 — 4200.00 6OKODTW — 36MOD7W / 3700.00 — 4200.00 Emission / Transmit Band (MHz) 45KOGTW — 36M0GTW / 5925.00 — 6425.00 6OKODTW — 36MOD7W / 5925.00 — 6425.00 45KOGTW — 36MOGTW 60KODTW — 36MOD7W Max. Available RF Power (dBW)/4 kHz) —2.7 —22.6 —2.7 —22.6 (dBw) /MHz) 21.3 1.4 21.3 1.4 Max. EIRP (dBw)/4 kHz) 42 .9 23.0 42.9 23.0 (dBw) /MHz) 66.9 47.0 66.9 47.0 (dBw) 53.4 62 .6 54 .7 62 .6 Max permissible Interference Power 4.0 GHz, 20% (dBW/1 MHz) —156.0 4.0 GHz, 0.0100% (dBW/1 MHz) —146.0 6.0 GHz, 20% (dBW/4 kHz) —154.0 6.0 GHz, 0.0025% (dBW/4 kHz) —131.0 Range of Satellite Arc (Geostationary) Degrees Longitude 91.0 W / 194.0 W Azimuth Range (Min/Max) 124.9 / 232.7 Corresponding Elevation Angles 5.2 / 6.0 Radio Climate A Rain Zone 2 Max Great Circle Coordination Distance (Mi/Km) 4.0 GHz 346.4 / 557.6 6.0 GHz 199.8 / 321.5 Precipitation Scatter Contour Radius (Mi/Km) 4.0 GHz 382.1 / 615.1 6.0 GHz 63.1 / 101.5

Exhibit A Page 8 of 10 Table of Earth Station Coordination Values 07/05/2002 Earth Station Name CHALKYITSIK AK Owner GENERAL COMMUNICATIONS INCRPORATED Latitude (DMS) (NAD83) 66 39 15.7 N Longitude (DMS) (NAD83)143 43 26.2 W Ground Elevation (Ft/m) 528.01 / 160.93 AMSL Antenna Centerline (Ft/m) 6.99 / 2.13 AGL Antenna Model SCIENTIFIC—ATLANTA 8136 Objectives: Receive —156.0 (dBW /1 MHz) Transmit —154.0 (dBW /4 kHz) TX Power —2.7 (dBW/4 kHz) Azimuth Horizon Antenna 4.0 GHz 6.0 GHz (Deg) Elevation Disc. Antenna Coordination Antenna Coordination Angle Angle Gain Distance Gain Distance (Deg) (Deg) (dBi} (Km) (dBi) (Km) 0 0 .00 124 .78 —10.20 284 .0 —10.40 169.1 5 0 .00 119.81 —10.20 284 .0 —10 .40 169.1 10 0 .00 114.84 —10.20 284.0 ~10.40 169.1 15 0 .00 109.86 ~10.20 284 .0 —10.40 169. 1 20 0 .00 104.89 —10.20 284.0 —10.40 169.1 25 0 .00 99 .91 —10.20 284 .0 —10 .40 169.1 30 0 .00 94 .93 —10.20 284 .0 ~10.40 169.1 35 0 .00 89.95 —10.20 284 .0 —10.40 169.1 40 0 .00 84 .97 —10 .20 284 .0 —10.40 169.1 45 0 .00 79.99 —10 .20 284 .0 —10.40 169.1 50 0 .00 75.01 —10,.20 284 .0 —10.40 169.1 55 0 .00 70.04 —10.20 284 .0 —10.40 169.1 60 0 .00 65.06 —10.20 284 .0 —10.40 169.1 65 0 .00 60 .09 —10.20 284 .0 —10.40 169.1 70 0 .00 55.12 —10.20 284.0 —~10.40 169.1 75 0 .00 50.15 ~10,.20 284 .0 —10.40 169.1 80 0 .00 45.19 —~9,24 290. 1 —9.44 172 .8 85 0 .00 40.23 —8 .25 296. 6 —8.45 176.6 90 0 .00 35.29 ~6. 32 309. 8 ~6.52 184 .1 95 0 .00 30 .36 —5.27 317.7 —5.47 188 .1 100 0.00 25 .46 —3.38 331.3 —3.58 195 .4 105 0 .00 20. 60 —0 .56 352.3 —0 .76 204 .5 110 0 .00 15.82 2.31 374.5 2.11 215.9 115 0 .00 11.23 5.57 400 .4 5.37 230 .1 120 0 .00 7.19 7.80 419. 4 7 .60 240.5 125 0 .00 5.22 11.35 557.6 11.15 321.5 130 0 .00 6.55 8.71 501. 6 8 .51 282.7 135 0 .00 8 .03 7.80 459. 6 7.60 257.0 140 0 .00 9. 40 7. 40 433.5 7.20 243.7 145 0 .00 10 .65 6.15 412 .0 5.95 234 .2 150 0 .00 11.75 5.05 396.0 4.85 227.7 155 0 .00 12.71 4 .09 388 .2 4 . 60 226 .6 160 0 .00 13.50 3.30 382 .4 4 .10 224 .4 165 0 .00 14.13 2.80 378 .4 3.47 221.7 170 0 .00 14.59 2.80 378 .4 3.01 219.7 175 0 .00 14.86 2.80 378. 4 2 .74 218 .6 180 0 .00 14 .95 2.80 378 .4 2.65 218 .2

Exhibit A Page 9 of 10 Table of Earth Station Coordination Values 07/05/2002 Earth Station Name CHALKYITSIK AK Owner GENERAL COMMUNICATIONS INCRPORATED Latitude (DMS) (NAD83) 66 39 15.7 N Longitude (DMS) (NAD83)143 43 26.2 W Ground Elevation (Ft/m) 528.01 / 160.93 AMSL Antenna Centerline (Ft/m) 6.99 / 2.13 AGL Antenna Model SCIENTIFIC—ATLANTA 8136 Objectives: Receive —156.0 (dBW /1 MHz) Transmit —154.0 (dBW /4 kHz) TX Power —2.7 (dBW/4 kHz) Azimuth Horizon Antenna 4.0 GHz 6.0 GHz (Deg) Elevation Disc. Antenna Coordination Antenna Coordination Angle Angle Gain Distance Gain Distance (Deg) (Deg) (dBi) (Km) (dBi} (Km) 185 0 .00 14.85 2.80 378 .4 2.75 218 .6 190 0.00 14.58 2.80 378 .4 3. 02 219.8 195 0 .00 14 .12 2.80 378 .4 3.48 221.7 200 0.00 13.49 3.31 382.5 4.11 224 .4 205 0 .00 12.70 4 .10 388.3 4 . 60 226. 6 210 0 .00 11.74 5.06 396.6 4.86 227.8 215 0 .00 10 .64 6.16 411.2 5.96 233.9 220 0 .00 9. 40 7.40 431.9 7.20 243.1 225 0.00 8 .04 7.80 457.0 7. 60 255. 6 230 0 .00 6.55 8 .69 497.3 8 .49 279.9 235 0 .00 6.46 8 .88 528 .7 8. 68 301.2 240 0 .00 9.48 7.32 415 .2 7.12 238 .2 245 0 .00 13.71 3.09 380 .7 3.89 223.5 250 0 .00 18 .33 0.80 362 .8 0 . 60 209. 8 255 0 .00 23.10 —2.06 341.0 —2.26 200 .4 260 0.00 27.95 —4 .38 324 .1 —4 .58 191.6 265 0 .00 32 .84 —5.77 314 .2 ~5,.97 186.2 270 0 .00 37.75 ~7.30 303.0 —7.50 180.3 275 0 .00 42 .69 ~8.74 293. 4 —8 .94 174.7 280 0 .00 47 .63 —9.73 287.0 —9.93 170 .9 285 0 .00 52.59 —10.20 284 .0 —10.40 169.1 290 0.00 57.54 ~10.20 284.0 —10.40 169.1 295 0.00 62.51 —10.20 284 .0 —10.40 169.1 300 0 .00 67.47 —10.20 284 .0 ~10.40 169.1 305 0 .00 72.44 —10.20 284 .0 —10.40 169.1 310 0 .00 77.41 —10.20 284.0 —10.40 169.1 315 0 .00 82.39 —10.20 284 .0 —10.40 169.1 320 0 .00 87.36 —10.20 284.0 —10 .40 169.1 325 0.00 92.33 ~10.20 284 .0 —10.40 169.1 330 0 .00 97 .30 ~10.20 284.0 —10.40 169.1 335 0 .00 102.27 —10.20 284.0 —10.40 169.1 340 0 .00 107 .24 —10.20 284 .0 —10.40 169.1 345 0 .00 112.21 —10.20 284.0 —10.40 169.1 350 0 .00 117.18 —10.20 284.0 —10.40 169.1 355 0 .00 122.14 —10.20 284 .0 —10.40 169.1

Exhibit A Page 10 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. I AM FAMILIAR WITH PARTS 101 AND 25 OF THE FCC RULES AND REGULATIONS. 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. ‘%//% TIMOTHY O. UTCHER SENIOR FREQUENCY COORDINATOR COMSEARCH 19700 Janelia Farm Boulevard Ashburn, Virginia 20147 DATED: July 11, 2002


Document Created: 2018-10-16 15:25:01
Document Modified: 2018-10-16 15:25:01
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