Caswell Air Force Station: Difference between revisions
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* [[US Radar Sets]] | * [[US Radar Sets]] | ||
* [[Topsham SAGE Direction Center DC-05]] | * [[Topsham SAGE Direction Center DC-05]] | ||
* [[North Bay SAGE Direction Center DC-31]] | |||
'''Sources:''' | '''Sources:''' | ||
Revision as of 19:27, 23 March 2016
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Caswell Air Force Station (1952-1980) - A Cold War Air Force Radar Station first established in 1952 near Caswell, Aroostook County, Maine. Named Caswell Air Force Station after the location. Initially assigned a Permanent ID of P-80 and later a Sage ID of Z-80. Abandoned in 1980. History of Caswell Air Force StationEstablished in 1952 as site LP-80 replacing Lashup Radar Site L-50 at Limestone ME. Became operational in 1952 as Caswell Air Force Station manned by the 766th AC&W Squadron. The station initially had both a Ground-Control Intercept (GCI) and early warning misssion. The early warning mission involved tracking and identifing all aircraft entering their airspace while the GCI mission involved guiding Air Force interceptors to any identified enemy aircraft. Controllers at the station vectored fighter aircraft at the correct course and speed to intercept enemy aircraft using voice commands via ground-to-air radio. Initial equipment included two FPS-10 combination search/height finder radars. The two FPS-10s were replaced with a FPS-8/GPS-3 search radar in 1955-1956 and two FPS-6A height finder radars in 1957-1958. SAGE 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. The site began operation as a SAGE site in February 1959 initially feeding the Topsham SAGE Direction Center DC-05. The search radar was upgraded to an FPS-7C in 1961. An FPS-26A height finder radar was also installed. Gap FillersCaswell AFS was responsible for the maintenance of one remote unattended gap filler radar site. The unattended gap filler sites were placed in locations where the main search radar lacked coverage. These sites were equipped with short range FPS-14 or FPS-18 search radars and FST-1 Coordinate Data transmitters that sent digitized radar target data to a SAGE direction center and to the main radar site. Both the radar set and the FST-1 were dual channel to increase site up time. Maintenance teams were dispatched for regularly scheduled maintenance or when fault indicators on the FSW-1 remote monitoring equipment suggested the site had problems. The FSW-1 also allowed remote operation of specific functions such as channel changes for the radar and for the FST-1, it also allowed remote operation of the diesel generators at the gap filler site. The Caswell AFS gap filler radar was located at Bridgewater, Maine.
ClosureCaswell AFS and the 766th were deactivated in 1 Jul 1980. Physical PlantThe physical plant of the site was divided into a main site, a cantonment 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. Married housing was located at nearby . A separate Ground to Air Transmitter/Receiver (GATR) radio site housed the radio equipment for directing aircraft intercepts.
Caswell: Eyes & Ears of Defense - Loring Limelite, 8 Aug 1978 Caswell Radar Aids National Defense - Loring Limelite, 14 Jul 1977
Current StatusAbandoned in Caswell, Aroostook County, Maine.
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