JOHNSTON ATOLL F &S NO. TITLE 01109 USER SCIENTIFIC Helical Antenna STRUCTURE /FACILITY NO. SANDIA \ SCIENTIFIC STATION NO. None BOD 91-4-5] FOD GO+120 FUNDING AGENCY AEC ($000) ENGR PROC CONST TOTAL FURN PRE-GO Prior Cost POST -GO 0.4 , 0.4 Estimate 10/68 TOTAL 0.4 4.5 4.5 4.5 4.9 PRIOR YEARS ENGINEERING Completed. Drawing: 91-4-51-W) POST -GO PROCUREMENT To be accomplished. CONSTRUCTION A 4-turn helical antenna will be mounted on the west wall, near the southwest corner of Building 20 (JOC) at the roof level. The antenna will be AEC furnished and will be a TACO (Technical Appliance Company, Sherburne, New York) 4-turn helical, type H-042 or equal. It will have lineof-sight to SANDIA'S north and south shore launchers with the element sighted S 65° W. RG-8 A/U cable will be run a maximum of 200 feet within the building from the antenna to the center of the south wall of the first floor SANDIA lab area. The cable will be terminated in a type ''N'' connector. 1-85 idl, VOL I hen 1989