Attachment coordination report

This document pretains to SES-REG-20190528-00642 for Earth Station Registration on a Satellite Earth Station filing.

IBFS_SESREG2019052800642_1705203

821 S. MAIN STREET P. O. BOX 1292 HARRISONBURG, VA 22801 (540) 568-3809 Your NPR Station HARRISONBURG 90.7 * CHARLOTTESVILLE 103.5 * WINCHESTER 94.5 * LEXINGTON 89.9 NOTICE: Because of time constraints and the May 28, 2019 deadline, a Frequency Coordination Report has not been prepared. We will supply that information to the Commission in short order for attachment to this application. The previously commissioned study for this location from 2003 is attached for reference. William D. Fawcett Director of Engineering Attachment: Comsearch Coordination Report 2003 - CALLSIGN E030319

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for JAMES MADISON UNIV BOARD OF VISITORS ( WMRA-FM ) HARRISONBURG, VA Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 November 20, 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 11/20/2003 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 11/20/2003 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 receive-only earth station. No Carriers Reported Potential Interference Cases. Frequency Coordination and Interference Analysis Report 11/20/2003 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 11/19/2003. Company AT&T COMMUNICATIONS OF VIRGINIA INC AT&T CORP MCI NETWORK SERVICES INC NATIONAL RADIO ASTRONOMY OBSERVATORY Frequency Coordination and Interference Analysis Report 11/20/2003 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 11/20/2003 Page 6 of 10

SATELLITE EARTH STATION FREQUENCY COORDINATION DATA 11/18/2003 Company JAMES MADISON UNIVERSITY BOARD OF VISITORS Earth Station Name, State HARRISONBURG, VA Latitude (DMS) (NAD83) 38 26 27.1 N Longitude (DMS) (NAD83) 78 51 30.2 W Ground Elevation AMSL (Ft/m) 1370.07 / 417.58 Antenna Centerline AGL (Ft/m) 8.20 / 2.50 Receive Antenna Type: C40381 COMTECH ANTENNA SYSTEMS 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 / 3700.0000 - 4200.0000 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) 151.2 / 253.2 Corresponding Elevation Angles 41.3 / 11.5 Radio Climate A Rain Zone 2 Max Great Circle Coordination Distance (Mi/Km) 4.0 GHz 233.9 / 376.5 Precipitation Scatter Contour Radius (Mi/Km) 4.0 GHz 331.2 / 533.1 Frequency Coordination and Interference Analysis Report 11/20/2003 Page 7 of 10

Table of Earth Station Coordination Values 11/18/2003 Earth Station Name HARRISONBURG VA Owner JAMES MADISON UNIVERSITY BOARD OF VISITORS Latitude (DMS) (NAD83) 38 26 27.1 N Longitude (DMS) (NAD83) 78 51 30.2 W Ground Elevation (Ft/m) 1370.07 / 417.58 AMSL Antenna Centerline (Ft/m) 8.20 / 2.50 AGL Antenna Model COMTECH ANTENNA SYSTEMS 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 1.85 106.53 -8.10 204.9 5 1.69 111.44 -8.10 209.2 10 1.56 116.34 -8.64 210.2 15 1.40 121.23 -10.35 206.8 20 1.32 120.32 -10.16 209.8 25 1.36 116.93 -8.87 214.7 30 1.10 113.32 -8.10 227.0 35 1.09 109.71 -8.10 227.4 40 0.95 106.01 -8.10 232.9 45 0.76 102.25 -8.10 244.5 50 0.66 98.49 -8.10 250.9 55 0.55 94.71 -8.10 257.9 60 0.56 90.92 -8.10 257.5 65 0.54 87.14 -8.10 258.6 70 0.67 83.35 -8.10 250.4 75 0.85 79.56 -8.10 238.8 80 0.80 75.83 -8.10 242.0 85 0.76 72.16 -8.10 244.1 90 0.76 68.54 -8.10 244.3 95 0.82 64.99 -8.10 240.7 100 1.04 61.45 -8.10 228.9 105 1.11 58.10 -8.10 226.6 110 1.09 54.95 -8.10 227.3 115 1.00 52.03 -8.10 230.1 120 1.26 49.11 -8.10 221.8 125 1.64 46.33 -8.10 210.5 130 1.17 44.55 -8.10 224.7 135 1.95 42.07 -7.93 205.5 140 1.50 41.11 -7.54 217.4 145 1.57 40.15 -7.16 217.2 150 1.95 39.38 -6.98 207.4 155 2.55 38.92 -6.88 197.1 160 1.95 40.17 -7.17 206.5 165 1.26 41.98 -7.89 222.9 170 1.82 42.66 -8.17 205.3 175 1.32 43.90 -8.66 217.1 180 1.42 44.06 -8.72 213.9 Frequency Coordination and Interference Analysis Report 11/20/2003 Page 8 of 10

Table of Earth Station Coordination Values 11/18/2003 Earth Station Name HARRISONBURG VA Owner JAMES MADISON UNIVERSITY BOARD OF VISITORS Latitude (DMS) (NAD83) 38 26 27.1 N Longitude (DMS) (NAD83) 78 51 30.2 W Ground Elevation (Ft/m) 1370.07 / 417.58 AMSL Antenna Centerline (Ft/m) 8.20 / 2.50 AGL Antenna Model COMTECH ANTENNA SYSTEMS 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 1.87 43.35 -8.44 205.1 190 1.33 43.13 -8.35 218.3 195 1.62 41.64 -7.76 212.8 200 1.86 39.77 -7.05 209.5 205 1.25 38.23 -6.75 229.3 210 0.77 36.20 -6.34 254.2 215 0.80 33.44 -6.10 253.8 220 0.31 30.84 -6.10 297.4 225 0.00 27.87 -5.25 317.9 230 0.00 24.51 -3.90 327.5 235 0.00 21.02 -2.51 337.7 240 0.45 17.12 0.78 329.8 245 0.36 13.78 4.33 370.4 250 0.63 11.29 8.32 376.5 255 0.90 10.70 9.20 371.8 260 1.25 12.22 6.68 325.2 265 1.59 15.31 2.59 278.1 270 1.88 19.24 -1.34 240.6 275 2.11 23.60 -3.54 221.1 280 2.21 28.21 -5.38 209.0 285 2.44 32.90 -6.10 203.1 290 2.32 37.73 -6.65 203.1 295 2.40 42.56 -8.10 194.5 300 2.37 47.44 -8.10 195.1 305 2.32 52.34 -8.10 196.3 310 2.28 57.25 -8.10 197.1 315 2.23 62.17 -8.10 198.3 320 2.16 67.09 -8.10 199.9 325 2.15 72.02 -8.10 200.1 330 2.10 76.95 -8.10 201.1 335 1.78 81.89 -8.10 206.8 340 1.66 86.82 -8.10 210.0 345 1.69 91.75 -8.10 209.1 350 1.86 96.68 -8.10 204.5 355 1.90 101.61 -8.10 206.0 Frequency Coordination and Interference Analysis Report 11/20/2003 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: November 20, 2003 Frequency Coordination and Interference Analysis Report 11/20/2003 Page 10 of 10


Document Created: 2019-05-28 17:15:05
Document Modified: 2019-05-28 17:15:05
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC