The CV85 basket covered glass valve is designated as a trigatron. It is a triggered spark gap based on the V2023. It was used in the H2S radar. It operated as a pulse modulator for a magnetron and operated at 7 kV. The pulse delivered to the magnetron was 150 kW.
The KB/C identifies this valve as being made to specification K1001 or K1006, the B denotes qualification by a UK authority and the C identifies the maker as Edison Swan, Ponders End, pre Sept 1951.
The lower electrodes are held in a pinch and the anode is held from the top cap. The resin impregnated basket was required as these devices were prone to shatter in use.
The base with two connections that enter the pinch stem through glass tubes.
The balloon envelope is 68 mm in diameter and it stands 150 mm tall.
