Attachment CORR.FREQ.COORD.

This document pretains to SES-REG-20030829-01193 for Earth Station Registration on a Satellite Earth Station filing.

IBFS_SESREG2003082901193_333329

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for WESTERN ILLINOIS UNIVERSITY (WIUM) MACOMB, IL Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 August 29, 2003

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 08/29/2003 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 08/29/2003 Page 3 of 10

2. SUMMARY OF RESULTS An interference study was completed for the proposed earth station. The analysis did not identify any potential interference conflicts within the coordination contours of the proposed earth station site. There are no unresolved interference objections with this earth station antenna. Frequency Coordination and Interference Analysis Report 08/29/2003 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. Coordination data for this earth station was sent to the below listed carriers with a letter dated 08/27/2003. Company AT&T CORP MCI NETWORK SERVICES INC Frequency Coordination and Interference Analysis Report 08/29/2003 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 08/29/2003 Page 6 of 10

SATELLITE EARTH STATION FREQUENCY COORDINATION DATA 08/26/2003 Company WESTERN ILLINOIS UNIVERSITY (WIUM) Owner code ZWESIL Earth Station Name, State MACOMB, IL Latitude (DMS) (NAD83) 40 28 27.8 N Longitude (DMS) (NAD83) 90 40 31.6 W Ground Elevation AMSL (Ft/m) 650.03 / 198.12 Antenna Centerline AGL (Ft/m) 9.00 / 2.74 Receive Antenna Type: C40381 COMTECH ANTENNA SY 3.8 METER PF 4.0 GHz Gain (dBi) / Diameter (m) 42.9 / 3.8 3 dB / 15 dB Half Beamwidth 0.70 / 1.40 Operating Mode RECEIVE ONLY Modulation ANALOG & DIGITAL Emission / Receive Band (MHz) 30K0F1D - 10M3G7W / 3700.0000 - 4200.0000 Max permissible Interference Power 4.0 GHz, 20% (dBW/1 MHz) -156.0 4.0 GHz, 0.0100% (dBW/1 MHz) -146.0 Range of Satellite Arc (Geostationary) Degrees Longitude 60.0 W / 143.0 W Azimuth Range (Min/Max) 137.6 / 243.4 Corresponding Elevation Angles 33.6 / 19.5 Radio Climate A Rain Zone 2 Max Great Circle Coordination Distance (Mi/Km) 4.0 GHz 213.7 / 343.9 Precipitation Scatter Contour Radius (Mi/Km) 4.0 GHz 313.7 / 504.9 Frequency Coordination and Interference Analysis Report 08/29/2003 Page 7 of 10

Table of Earth Station Coordination Values 08/26/2003 Earth Station Name MACOMB IL Owner WESTERN ILLINOIS UNIVERSITY Latitude (DMS) (NAD83) 40 28 27.8 N Longitude (DMS) (NAD83) 90 40 31.6 W Ground Elevation (Ft/m) 650.03 / 198.12 AMSL Antenna Centerline (Ft/m) 9.00 / 2.74 AGL Antenna Model COMTECH ANTENNA SY 3.8 METER PF Objectives: Receive -156.0 (dBW /1 MHz) Azimuth Horizon Antenna 4.0 GHz (Deg) Elevation Disc. Antenna Coordination Angle Angle Gain Distance (Deg) (Deg) (dBi) (Km) 0 0.39 115.05 -8.12 273.9 5 0.44 119.71 -9.98 256.7 10 0.33 120.65 -10.23 268.2 15 0.28 116.73 -8.79 283.3 20 0.27 112.75 -8.10 288.5 25 0.24 108.70 -8.10 292.1 30 0.23 104.61 -8.10 294.0 35 0.00 100.45 -8.10 297.6 40 0.00 96.31 -8.10 297.6 45 0.00 92.15 -8.10 297.6 50 0.00 87.99 -8.10 297.6 55 0.00 83.83 -8.10 297.6 60 0.00 79.68 -8.10 297.6 65 0.26 75.52 -8.10 289.3 70 0.46 71.38 -8.10 265.8 75 0.86 67.22 -8.10 238.5 80 0.98 63.17 -8.10 231.2 85 1.01 59.22 -8.10 229.8 90 0.99 55.39 -8.10 230.6 95 0.86 51.75 -8.10 238.2 100 0.75 48.28 -8.10 245.0 105 0.82 44.91 -8.10 240.6 110 0.82 41.85 -7.84 242.4 115 0.96 38.99 -6.90 239.0 120 1.24 36.39 -6.38 231.7 125 1.43 34.32 -6.10 227.1 130 1.40 33.01 -6.10 228.0 135 1.41 32.31 -6.10 227.8 140 1.58 32.13 -6.10 222.5 145 1.57 32.82 -6.10 222.7 150 1.30 34.39 -6.10 231.3 155 1.26 36.31 -6.36 231.2 160 1.02 38.48 -6.80 236.8 165 0.67 40.39 -7.25 254.9 170 0.74 41.50 -7.70 248.0 175 0.79 42.17 -7.97 243.5 180 0.78 42.42 -8.07 243.3 Frequency Coordination and Interference Analysis Report 08/29/2003 Page 8 of 10

Table of Earth Station Coordination Values 08/26/2003 Earth Station Name MACOMB IL Owner WESTERN ILLINOIS UNIVERSITY Latitude (DMS) (NAD83) 40 28 27.8 N Longitude (DMS) (NAD83) 90 40 31.6 W Ground Elevation (Ft/m) 650.03 / 198.12 AMSL Antenna Centerline (Ft/m) 9.00 / 2.74 AGL Antenna Model COMTECH ANTENNA SY 3.8 METER PF Objectives: Receive -156.0 (dBW /1 MHz) Azimuth Horizon Antenna 4.0 GHz (Deg) Elevation Disc. Antenna Coordination Angle Angle Gain Distance (Deg) (Deg) (dBi) (Km) 185 0.76 42.20 -7.98 245.0 190 0.75 41.49 -7.70 247.3 195 0.75 40.32 -7.23 250.5 200 0.67 38.79 -6.86 257.4 205 0.56 36.91 -6.48 267.4 210 0.53 34.62 -6.10 272.0 215 0.56 32.00 -6.10 269.8 220 0.57 29.15 -5.76 271.6 225 0.47 26.19 -4.57 288.0 230 0.39 23.19 -3.38 306.5 235 0.26 20.93 -2.47 329.7 240 0.00 19.79 -1.89 342.3 245 0.00 19.58 -1.68 343.9 250 0.00 20.56 -2.33 339.0 255 0.00 22.59 -3.14 333.1 260 0.00 25.42 -4.27 324.9 265 0.00 28.81 -5.62 315.2 270 0.22 32.46 -6.10 308.5 275 0.24 36.51 -6.40 304.0 280 0.24 40.75 -7.40 296.5 285 0.20 45.13 -8.10 297.3 290 0.35 49.56 -8.10 279.3 295 0.44 54.07 -8.10 267.6 300 0.44 58.67 -8.10 267.8 305 0.55 63.29 -8.10 257.9 310 0.59 67.96 -8.10 254.9 315 0.60 72.65 -8.10 254.6 320 0.53 77.36 -8.10 259.1 325 0.66 82.08 -8.10 250.9 330 0.57 86.81 -8.10 256.7 335 0.47 91.54 -8.10 264.2 340 0.54 96.26 -8.10 258.7 345 0.53 100.98 -8.10 259.5 350 0.52 105.70 -8.10 259.9 355 0.43 110.38 -8.10 269.1 Frequency Coordination and Interference Analysis Report 08/29/2003 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. BY: ___ GARY K. EDWARDS SENIOR MANAGER COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 DATED: August 29, 2003 Frequency Coordination and Interference Analysis Report 08/29/2003 Page 10 of 10


Document Created: 2003-09-08 16:21:24
Document Modified: 2003-09-08 16:21:24
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