The CV1118 is a critical distance beam tetrode based on the KT2. Before the CV register almost every branch of the UK government purchased this valve under their own Type code. Prevoiusly = NR39, ARP1, VR118 & POVT136.
Reference: Datasheet. Type CV1118 was first introduced in 1932.
Absolute Maximum Operating Conditions¶
Updated April 04, 2015. shape:classic construction:pinch type:tetrode age:1930.1940 base:b5 heater:2.0v pins:5 pin:1.a pin:2.g1 pin:3.f(-) pin:4.f(+) pin:5.g2