anne | JOHNSTON ATOLL F&SNO. 01117 USER Loop Antennas - Subtask A620 STRUCTURE/FACILITY NO. TC RDT&E SCIENTIFIC STATION NO. None FUNDING AGENCY JTF-8/ SCIENTIFIC TITLE ($000) 91-3-126 and 127 ENGR POST-GO Estimate 4/68 TOTAL BoD PROC CONST TOTAL 1.5 5.2 9.7 16.4 15 5.2 9,7 16.4 FOD GO+135 FURN POST-GO ENGINEERING To be accomplished. PROCUREMENT To be accomplished. CONSTRUCTION This facility will consist of two 10-ft. diameter loop antennas placed approximately 5,300-ft. apart and two project electronic equipment racks located in the monitor half of the Launch Control and Monitor Bunker. The antennas, racks and cables will be TC furnished. At present, it is planned to locate the loop antennas at the following coordinates: E 193, 000. N 197,250; E 198, 300 and N 197,350; The exact location of the antennas is not critical except that it is im- portant to place each antenna at least 50-ft. away fromany large metal structure. The antenna support for each antenna will consistofa+4in. diameter pipe approximately 6-ft. long and threaded on one end. The pipe will be buried in the ground in a vertical position with a maximum of 2-ft. of the threaded end of the pipe exposed above grade. One run of RG-~22U cable, or electrical equivalent, will be required from each of the two antennas to the project electronic equipment racks in Building 881. Installation of this cable will be accomplished concurrently with the other TC Signal Cable (F&S No. 04019) and the cable will be installed in the existing cable troughs. Cable lengths are not critical but must be measured to within + 1-ft. A maximum of 5 kw, 110 volt, 60 cycle power will be required for the two elec- tronic equipment racks in Building 881. 1-95 Corin, VOLI wae