Blue Cedar
AA No. 3 Mk. 7 radar
Blue Cedar was the British code name for the Radar, Anti-Aircraft 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 significantly smaller and more portable than the SCR-584 and GL Mk. III radars it replaced. It was used extensively by the British Army and was exported to countries such as Holland and Sweden.[1] In British service it was used with the 5.25 inch and QF 3.7 inch AA guns, as well as the Brakemine missile.
Specification
- 5 ft (1.5 m) diameter parabolic dish antenna rotating at 20 revolutions per minute.
- Elevation scan completed every 4 seconds
- Detection range 950–36,000 yd (0.9–32.9 km)
- Operating in 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.
References
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