Attachment COORDINATE

This document pretains to SES-LIC-20000211-00221 for License on a Satellite Earth Station filing.

IBFS_SESLIC2000021100221_129469

EXHIBIT F FREQUENCY COORDINATION & INTEFERENCE ANALYSIS IBFS Application Submission ID No. IB2000000082 HCJB WORLD RADIO - COLORADO SPRINGS TX/RX EARTH STATION FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT PREPARED FOR HCJB WORLD RADIO, LLC COLORADO SPRINGS, CO SATELLITE 3.8 METER EARTH STATION PREPARED BY COMSEARCH 2002 EDMUND HALLEY DRIVE RESTON, VIRGINIA 20191 December 2, 1999 Frequency Coordination Exhibit F, Page 1 of 20 Coordinate.Doc

Frequency Coordination Exhibit F, Page 2 of 20 Coordinate.Doc

TABLE OF CONTENTS 1. CONCLUSIONS 2. SUMMARY OF RESULTS 3. SUPPLEMENTAL SHOWING, RE: PART 25.203(C) 4. EARTH STATION COORDINATION DATA 5. CERTIFICATION Frequency Coordination Exhibit F, Page 3 of 20 Coordinate.Doc

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. THE TRANSMIT BAND OF THE PROPOSED EARTH STATION WILL BE RESTRICTED TO AVOID CONFLICT WITH LOCAL 6 GHz TERRESTRIAL MICROWAVE RECEIVERS. THERE WILL BE NO RESTRICTIONS OF ITS OPERATION DUE TO INTERFERENCE CONSIDERATIONS. Frequency Coordination Exhibit F, Page 4 of 20 Coordinate.Doc

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, WITH THE EXCEPTION OF THOSE CASES THAT WERE CLEARED THROUGH FREQUENCY OFFSET. THE FOLLOWING COMPANIES REPORTED POTENTIAL GREAT CIRCLE INTERFERENCE CONFLICTS WHICH 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 TRANSMIT AND RECEIVE EARTH STATION. COMPANY AT&T COMMUNICATIONS AT&T WIRELESS SERVICES-COLORADO U.S WEST COMMUNICATIONS, INC RIO GRANDE TRANSMISSION, INC VOICESTREAM PCS II LICENSE CORPORATION WESTERN TELE-COMMUNICATIONS, INC MICRONET COMMUNICATIONS, INC NO OTHER CARRIERS REPORTED POTENTIAL INTERFERENCE CASES. Frequency Coordination Exhibit F, Page 5 of 20 Coordinate.Doc

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 DATA FOR THIS EARTH STATION WAS SENT TO THE BELOW LISTED CARRIERS WITH A LETTER DATED NOVEMBER 11, 1999. AIRTOUCH COMMUNICATIONS, INC. ASIA SKYLINK INC AT&T COMMUNICATIONS AT&T COMMUNICATIONS OF MOUNTAIN STATES AT&T WIRELESS SERVICES - COLORADO AT&T WIRELESS SERVICES - DENVER BURLINGTON NORTHERN RAILROAD COMPANY CNG COMMUNICATIONS, INC. COLORADO INTERSTATE GAS COMPANY COLORADO SPRINGS UTILITIES-BIS TELECOMMU COLORADO STATE TELECOMMUNICATIONS SVCS GREAT PLAINS CABLE TV MCI WORLDCOM NETWORK SERVICES INC. N.E. COLORADO CELLULAR PATHNET, INC. RIO GRANDE TRANSMISSION INC SMOKEY HILL CELLULAR OF COLORADO LP SPECIALTY ANTENNA SITE RESOURCES, INC. TRI-STATE GENERATION & TRANSMISSION ASSO UA CABLE OF CENTRAL WYOMING - CASPER US WEST COMMUNICATIONS, INC. VOICESTREAM PCS II LICENSE CORPORATION WESTERN TELE-COMMUNICATIONS, INC. WWC HOLDING CO., INC. Frequency Coordination Exhibit F, Page 6 of 20 Coordinate.Doc

4. EARTH STATION COORDINATION DATA THIS SECTION PRESENTS THE DATA PERTINENT TO FREQUENCY COORDINATION OF THE PROPOSED EARTH STATION WHICH WAS CIRCULATED TO ALL COMMON CARRIERS WITHIN ITS COOR- DINATION CONTOURS. Frequency Coordination Exhibit F, Page 7 of 20 Coordinate.Doc

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Document Created: 2019-04-20 18:20:48
Document Modified: 2019-04-20 18:20:48
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