Type 293 radar

The Type 293 radar was designed as a short-range aerial-search radar for surface ships in 1945. It used the same transmitter as the Type 277 surface-search radar, but used a new antenna design intended to cover the area above the ship to provide air warning instead of surface search. The stabilised "cheese" antenna, 6 feet (1.8 m) diameter in the AUR antenna, was upgraded to 8 feet (2.4 m) in Type 293P and to 12 feet (3.7 m) in the postwar Type 293Q.[1]

Type 293 radar
A Type 293 AUR antenna at the upper center aboard HMS Swiftsure at Scapa Flow
Country of originUnited Kingdom
TypeAerial-search radar
Frequency2,997 MHz
Range20 nmi (37 km; 23 mi)
Altitude20,000 ft (6,100 m)
Power500 kW


Type Aerial outfit Peak power (kW) Frequency (MHz) Wavelength (mm) In service
293M AUR 500 2,997 100 1945
293P AQR 500 2,997 100 1945
293Q ANS 500 2,997 100 1945


  1. Friedman, p. 197


  • Friedman, Norman (1981). Naval Radar. London: Conway Maritime Press. ISBN 0-85177-238-2.
  • Watson, Raymond C. Jr. (2009). Radar Origins Worldwide: History of Its Evolution in 13 Nations Through World War II. Trafford. ISBN 978-1-4269-2111-7.
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