Claysburg Air Force Station
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Claysburg Air Force Station (1952-1961) - A Cold War U.S. Air Force Radar Station established during the Korean War. Located near Blue Knob, Bedford County, Pennsylvania. Initially assigned a Permanent ID of P-63 qnd later a Sage ID of Z-63. Closed in 1961 and relocated to Gibbsboro Air Force Station. HistoryEstablished in December 1951 and became operational in April 1952 as Blue Knob Radar Site manned by the 772nd Aircraft Control & Warning (AC&W) Squadron. Initial equipment included the FPS-3 search radar and one CPS-4 height finder radar. The CPS-4 height finder was replaced by an FPS-4 in 1956. In 1958 the FPS-3 search radar was replaced with a FPS-20 search radar and the FPS-4 height finder radar was replaced by two FPS-6 height finder radars. This configuration (a SAGE qualified long range search radar and two SAGE qualified height finders) met the requirements for transition to SAGE System operation. SAGE System TransitionThe transition of the manual GCI system to the automated SAGE system began with the installation of the FST-2 coordinate data transmitter and search radar upgrades. The FST-2 equipment digitized the radar returns and transmitted the digital returns to the SAGE direction center. Under the SAGE System, interceptor aircraft were directed to their targets by the direction center computers and controllers, greatly reducing the need for local controllers and equipment at every radar station. The FST-2 was a very large digital system using vacuum tube technology. Over 6900 vacuum tubes were used in each FST-2 requiring 21 air-conditioned cabinets, 40 tons of air conditioning, 43.5 kva of prime power, and usually a large new addition to the operations building. The FST-2B modification added two more cabinets but with newer solid-state (transistor) technology to process coded responses from aircraft transponders. SAGE System Operation
The site began operation as a SAGE site on 15 Aug 1958 initially feeding the Hancock SAGE Direction Center DC-03. In February 1959 the squadron designation was changed from the 772nd AC&W Squadron to 772nd Radar Squadron (SAGE) indicating the new SAGE System role. In 1959 one FPS-6 height-finder was upgraded to a FPS-6A and the search radar was upgraded to a FPS-20A. This site was deactivated in 1961, and the squadron and the site designation relocated to Gibbsboro, New Jersey (RP-63/Z-63), to be colocated with the Pedricktown, NJ, Nike Missile-Master control center at Gibbsboro Air Force Station. ClosureClaysburg AFS was deactivated on 1 May 1961 and relocated to Gibbsboro Air Force Station. Physical PlantThe physical plant of the site was divided into a main site, a cantonment area, a housing area and a radio site. The main site housed the operations buildings, the radar towers, and the backup generators. The cantonment area housed the enlisted barracks, the bachelor officer's quarters, the orderly room, the dining hall, the motor pool and other support buildings. Apart from the main site was a small 9 unit housing area for married personnel first occupied circa 1956. A separate radio site housed the radio equipment for directing aircraft intercepts. Like most early radar stations, Claysburg originally had a radio transmitter site and a separate radio receiver site used by local controllers for voice direction of fighter interceptors to their targets. With the SAGE System, the SAGE Direction centers had the primary task of directing intercepts and the local radio sites were reconfigured, usually into a single site that was known as the Ground to Air Transmitter Receiver (GATR) site. The GATR site communicated with the interceptors from either the local site or the SAGE direction center via voice commands and/or a digital data link.
Current StatusNow Blue Knob Ski Resort.
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