Britain AA-3 Gun Radar Public manual - operator and maintenance manuals government public released.
Frequency 2.750–2.855 GHz
PRF 420
Beamwidth ~8 degrees
Range 32,000 yards maximum, 27,000 yards against a light bomber
Precision ±25 yards, ±1/6th degree at 32,000 yards
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Here's my collection of WWII items from the RAF Museum in Cosford that I visited a little over a year ago. You can see the full album here. (Please like my FB Page too :) )