i JOHNSTON ATOLL F aS NO. TITLE 02058 USER SUPPORT Base Beacon Facilities STRUCTURE FACILITY NO. TG 8.6 SCIENTIFIC STATION NO. 635, 636 and 638 B00 None Foo FUNDING AGENCY JTF -8 ($000) ENGR PROC CONST TOTAL FURN PRE-GO RDT&E Prior Cost 16. 6% 16.6 16.6 16.6 CRO2-65 CRO 3-65 j TOTAL I COMPLETED DESCRIPTION The Base Beacon Tower (Building 635) is a 96-ft. high free- standing, steel framed tower. The base of this square shaped tower measures 16 x 16-ft. and is supported on concrete footings. The tower was completed prior to 1963. The Radio Homing Beacon Station (Building 636-completed in 1965) is located north of Building 697. The building (formerly identified as NAV-AIDS Building) isa 15 1/2 x 22-ft. wood frame structure covered with corrugated asbestos cement siding and built-up roofing. Approximately half of the building will house a 10 kw, 120 volt, | phase standby generator. The remainder of the building provides space for AN-URN-5 Homer Beacon Equipment. Only the equipment portion of the building is air conditioned. The Base Beacon Build- ing is connected into the island electrical system and uses about 9.0 kw power for critical equipment and about 20 kw power for noncritical purposes. The Generator Shed (Building 638-completed in 1965) is a 12 x 14 x 8-ft. high wood framed structure with corrugated aluminum siding and roofing anda concrete floor. The building is utilized to house the emergency generator for the Base Beacon Tower. DRAWINGS: JS 91-300-A100 JS 91-636-A100 and AlOl JS 91-636-E100 and E101 JS 91-636-M100 *Includes contractor support for relocation and modification to existing equipment prior to installation. 2-57 VOL I