OVERVIEW:  The Type 965M "Single Bedstead" radar is a shipborne, long-range, 2-D air search radar operating in the NATO A-band (IEEE VHF Band).

DETAILS:  The Type 965 was developed from World War II technology and before the introduction of Doppler filtering.  Consequentially, it lacked an Moving Target Indicator (MTI) and was subject to considerable radar clutter from waves and land masses making it unable to detect low-level targets near shore or in higher sea states.   Its wide 12° beam, also made it less precise.  Finally, the radar was not stabilized against the ship's motion, further decreasing accuracy.

The Type 265 used radio frequencies that were used by television stations, both causing and receiving interference with television stations if used near land.

There are two alternative bedstead antennas, the AKE(1) with 8 elements, and the AKE(2) with 16 elements.  The AKE(2)  is effectively two superimposed AKE(1)s.

Specifications:

	Frequency:	 216-224 MHz (A-band (NATO))
	PRF:		200 or 400 pps
	Power: 		 450 kW (peak);?? kW (average)
	Range:		200 nm at 45,000 feet  				
	Accuracy:		?? m (range);  ?? min (aziumth); ??min (elevation)
			
NOTES:  IOC early 1960.  The lack of a true MTI proved to be a serious problem during the 1982 Falklands War, leading to the loss of HMS Coventry where Argentine aircraft could not be seen against the background of the islands. Similarly, the Type 965 could not detect aircraft flying low; the two Super Étendards that caused the loss of HMS Sheffield were not detected by Type 965R radar when they were flying at 98 feet (30 m), but were shown as contacts by HMS Glasgow's Type 965R radar when they popped up to 120 feet (37 m) above sea-level at 45 nautical miles (83 km), though it was the UAA1 radar warning receiver that drew attention to the contacts. 

SOURCES: Friedman, The Naval Institute Guide to World Naval Weapons Systems 1997-98, pg. 351 ; Jane's Radar and Electronic Warfare Systems, "United Kingdom: Introductory Note" 10 November 2000; "Type 965M/P: Summary of Data" http://marconiradarhistory.pbworks.com/f/53951375/965M%20AND%20P%20AE%20AKE%5B2%5D.pdf; Marconi Radar Data Sheet " Metrick Naval Air Surveillance Radar Type 965", page L2/2 at https://marconiradarhistory.pbworks.com/w/file/fetch/89796107/Type%20965%20Metric%20Wavelength%20Naval%20Air%20Surveillance%20Radar.pdf
