JOHNSTON ATOLL F&SNO. 01077 USER PMR SCIENTIFIC. TITLE Frequency Interference Control Center STRUCTURE ‘FACILITY NO. JTF -8 MILCON SCIENTIFIC STATION NO. None : FUNDING AGENCY . None ($000) ENGR PRE-GO Prior Cost CRO 7-64 TOTAL BOD PROC CONST FOD TOTAL 1.3 9.3 10.6 1.3 9.3 10.6 FURN COMPLETED DESCRIPTION This facility consists ofa frequency interference control monitor- ing station, a frequency-control van, a frequency monitoring shelter, a frequency interference control center, and an emergency generator. The frequency interference control monitoring station is located on the roof of Barracks 251. The roof supports a 6-ft. high ''T" configured platform designed to support five antennas. These antennas are two AS-571/SLR, one AS-616/SLR, one AS-5-4/URD-4. Space is reserved for a microwave telemetry antenna. Range of the monitor is 10 kc to 19,750 mc. Power at 115 volts, 60 cycle, with 15 amp Capacity is supplied for floodlighting. The frequency control van is located west of the frequency monitoring shelter. Separate power sources for the instrumentation are provided. The frequency monitoring shelter is located on a concrete padadjacent toand west of Barracks 251. This shelter will be replaced by a PMR-furnished van. The frequency interference control center is located in the JOC. This center is operated by PMR under JTF-8/TG 8.6 control. The PMR-furnished emergency generator is located south of the shelter and supplies 30 kw, 120/208 volt, 60 cycle, 3 phase standby power. DRAWINGS: 91-071-S2 91-251-Cl 91-251-S7 VOL I April 1999 JS 911-071-5100 JS 91-251-E100 JS-SK-097-S105 1-70 ¥ We