Sensibly equivalent¶ to:
The CV327 is the UK government procurement code for the Mullard EF52. The CV327 is an all glass valve with an aluminium screening case, the same construction as the EF50, it is a straight RF/IF pentode and a member of the Philips EF2x family. See EF22.
This valve is sealed within a polythene bag.
The plain description label suggests that this valve has been re-packed in a UK Government store.
The wide glass tube envelope is 29 mm in diameter and, excluding the B8B base pins is 65 mm tall.
References: Datasheet & Chris Parry.
Absolute Maximum Operating Conditions¶
Updated August 23, 2018. shape:wide.glass.tube construction:all.glass type:pentode age:1940.1950 base:b8b heater:6.3v pins:8 pin:1.h pin:2.a pin:3.k pin:4.g3 pin:5.g2 pin:6.g1 pin:7.k pin:8.h pin:spigot.s