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Type 276 Radar


Photograph of Type 271 radar antenna

Naval History and Heritage Command #NH-80532

Cropped by author


Specifications:


Wavelength 10 cm
Pulse Width 1.5 or 1.9 microsecond
Pulse Repetition Frequency     
500 Hz
Scan Rate
Manual; approximately 2 rpm. Later versions autorotated at up to 18 rpm.
Peak power 500 kW
Range 16 nautical miles (30 km) battleship
14 nautical miles (26 km) heavy cruiser
12 nautical miles (22 km) destroyer
10 nautical miles (19 km) frigate
7 nautical miles (13 km) PT boat
5 nautical miles (9 km) submarine
13 to 17 nautical miles (17 to 23 km) on aircraft at 200' to 6000' (60 meters to 1800 meters)
Accuracy
3.5 degrees/50 yards
3.5 degrees/45 meters
Antennas
Single cheese
Scope
A scope. Plan Position Indicator on later autorotating models.
Production
From 1944


The British Type 276 was a further refinement on the Type 271 naval sea search radar, with much greater power and a "single cheese" antenna. Like Type 271, it was initially manually steered and equipped initially with an A-scope display. Later versions were autorotating and had a PPI display. It was fitted primarily to destroyers.


References

Friedman (2006)

Howse (accessed 2014-1-2)



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