Blue Cedar

Blue Cedar was the British code name for the '''AA No. 3 Mk. 7''' mobile anti-aircraft gun control radar designed by the British Thomson-Houston company in the mid 1940s. The unit was housed in an air conditioned trailer towed by an AEC Matador artillery tractor unit. It was used extensively by the British Army and was exported to countries such as Holland and Sweden.

Specification

 * 5ft diameter parabolic dish antenna rotating at 20rpm.
 * S band 3.0 to 3.1GHz
 * 200kW peak power.
 * Powered by a Lister/Tilling-Stevens 17kVA diesel generator set housed in a separate trailer.