British gun laying radar
Type 285 radar Country of origin United Kingdom Introduced 1940 Type Fire-control radar Frequency 600 MHz Beamwidth
18° (horizontal)
43° (vertical)
Pulsewidth 2 μs Range 18,000 yd (16,000 m) Altitude 15,000 ft (4,600 m) Precision 150 yd (140 m) Power 25 kW
The Type 285 radar was a British naval anti-aircraft gunnery radar developed during the Second World War. The prototype was tested at sea aboard the escort destroyer HMS Southdown in August 1940.
Type
Aerial outfit
Peak power (kW)
Frequency (MHz)
Wavelength (cm)
In service
285
25
600
50
1941
285M
150
600
50
1941
285P
150
600
50
1942
Notes
Campbell, p. 16
Bibliography
Campbell, John (1985). Naval Weapons of World War II . Annapolis, Maryland: Naval Institute Press. ISBN 978-0-87021-459-2 .
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 .
External links
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