Craster radar station

Craster radar station (also known as RAF Craster), was a Chain Home Low (later a Chain Home Extra Low) Second World War radar site at Craster in Northumberland, England. The radar site is north of the village of Craster on an escarpment overlooking the North Sea. The site was opened by early 1942 and was staffed initially by the British Army, but later came under the control of No. 73 Wing of the Royal Air Force, part of No. 60 Group. It closed in 1944 and was later used as a PoW camp.

History
At the time of the Munich crisis in October 1938, Britain had eleven radar sites, which were mostly located on the eastern coast. The concern over the rise of Nazi Germany prompted a wider development of the radar system. The site at Craster was built in 1941 and opened in April 1942 under the auspices of the British Army's chain of radar stations, operating as a Coastal Defence/Chain Home Low station (CD/CHL). It was built on an escarpment some 150 m from the shoreline and 50 m above sea level. The escarpment is an outcrop of Whin Sill which has a gentle slope towards the sea, giving the radar station an "..uninterrupted sweep of the coast from a relatively elevated position." The prefix of M at Craster (its code was M28), signified that it was initially equipped with a 1.5 m radar.

The site was handed over to the Royal Air Force c. 1942, and was staffed by communications personnel drawn from No. 73 Wing (part of No 60 Group RAF), who had their headquarters in Malton, North Yorkshire. By 1944, Craster had become a Chain Home Extra Low site.

After closure as a radar station, the site was used briefly as a PoW camp.

Buildings
Two buildings remain on the site, the former transmit/receive block (TxRx) and the standby set house. The standby set house was used to provide emergency power to the TxRx block in case of electricity supply issues. The buildings are now maintained by the National Trust and are recorded as 10355 / MNA124708. Both buildings are 3 m high and the site is listed as grade II with Historic England. The TxRx building was a set design, measuring 50 ft by 18 ft upon which was mounted an aerial which could turn continuously. The footprint of the radar base including the TxRx, standby set house and accommodation buildings, covered an area of 230 m by 170 m.