Attachment Mattoon Supplemental

This document pretains to SES-REG-INTR2018-06375 for Earth Station Registration on a Satellite Earth Station filing.

IBFS_SESREGINTR201806375_1543950

Cromwell Radio of Illinois - Mattoon Site 39-28-51.6 N, 88-32-45.722-36.1W (NAD83)

Micronet Communications, Inc. 720 F Avenue, Suite 100 Plano, Texas 75074 972-422-7200 SUPPLEMENTAL SHOWING PART 101.103(D) File Number: M1825604 3.70 GHz Licensee: THE CROMWELL GROUP, INC. OF ILLINOIS Page 1 _____________________________________________________________________________________ Pursuant to Parts 25.203 and 101.103(d) of the FCC Rules and Regulations, a frequency coordination study was conducted by Micronet Communications, Inc. for the following proposed earth station: Mattoon, IL The results of the study indicate that no unacceptable interference will result with existing, proposed or prior coordinated radio facilities. Coordination was performed with existing, proposed and prior coordinated carriers within coordination range on the following dates: 10/02/2018 Original PCN There were no unresolved interference objections. The attached coordination data was forwarded on the latest date to the following parties within coordination range or their authorized coordination agents: Respectfully Submitted, Jeremy Lewis Systems Engineer Attached: 1 data sheet

Micronet Communications, Inc. 720 F Avenue, Suite 100 Plano, Texas 75074 972-422-7200 File: M1825604 ========================================================================== TECHNICAL CHARACTERISTICS OF RECEIVE ONLY EARTH STATION ========================================================================== Company: THE CROMWELL GROUP, INC. OF ILLINOIS Site Name, State: Mattoon, IL Call Sign: Latitude (NAD83) 39 28 51.6 N Longitude (NAD83) 88 22 36.1 W Elevation AMSL (ft/m) 732.94 223.40 Receive Frequency Range (MHz) 3700-4200 Transmit Frequency Range (MHz) Range of Satellite Orbital Long. (deg W) 60.00 160.00 Range of Azimuths from North (deg) 139.65 258.07 Antenna Centerline (ft/m) 6.56 2.00 Antenna Elevation Angles (deg) 35.73 5.44 -------------------------------------------------------------------------- Equipment Parameters Receive -------------------------------------------------------------------------- Antenna Gain, Main Beam (dbI) 40.90 15 DB Half Beamwidth (deg) 3.20 Antennas Receive: VIKING SATCOM 1374-990 (3.7 M) Max Transmitter Power (dbW/4KHz) Max EIRP Main Beam (dbW/4KHz) Modulation / Emission Designator DIGITAL 36M0G7W -------------------------------------------------------------------------- Coordination Parameters Receive -------------------------------------------------------------------------- Max Greater Circle Distances (km) 506.10 Max Rain Scatter Distances (km) 579.00 Max Interference Power Long Term (dbW) -158.60 Max Interference Power Short Term (dbW) -149.90 Rain Zone / Radio Zone 2 A

Horizon Angle & Satellite Arc for Mattoon, IL Micronet Communications, Inc. 90 Satellite Arc Horizon Angle 80 70 60 Elevation Angle (degrees) 30 40 20 10 0 50 0 30 60 90 120 150 180 210 240 270 300 330 360 Earth Azimuth (degrees)

Horizon Gain for Mattoon, IL Micronet Communications, Inc. 30 Receive 20 10 Horizon Gain (decibels) -10 0 -20 -30 0 30 60 90 120 150 180 210 240 270 300 330 360 Earth Azimuth (degrees)

Minimum Discrimination Angles for Mattoon, IL Micronet Communications, Inc. 180 160 140 120 Discrimination Angle (degrees) 40 60 80 20 0 100 0 30 60 90 120 150 180 210 240 270 300 330 360 Earth Azimuth (degrees)

Final Contour & Rain Scatter for Mattoon, IL - Receive Final Contour Rain Scatter 98 96 94 92 90 88 86 84 82 80 78 76 48 48 Bismarck 46 46 Ottawa Pierre St Paul 44 44 Toronto Niagara Falls Madison Milwaukee Lansing 42 42 Detroit Chicago DesMoines Lincoln Pittsburgh Harrisburg Philad 40 40 Columbus Indianapolis Baltimore Dover Springfield Washington Topeka St Louis Jefferson City Charleston 38 38 Louisville Frankfort Richmond 36 36 Nashville Oklahoma City Memphis Raleigh Little Rock 34 34 Columbia Atlanta Birmingham Dallas Charleston 32 32 Jackson Montgomery Savannah 96 94 92 90 88 86 84 82 80 78 SCALE - 1:10000000 1 inch = 157.8 miles


Document Created: 2018-10-02 11:25:59
Document Modified: 2018-10-02 11:25:59
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