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CV327

Sensibly equivalent to:
EF52
    
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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 was used in the Murphy B40 receiver and all subsequent variants up to and including the B40C. Thanks to Chris Parry for the additional details on this exhibit.
The wide glass tube envelope is 28 mm in diameter and, excluding the B8B base pins is 65 mm tall.
References: Data-sheet & Chris Parry.

 

Pin Connections
B8B
1
2
3
4
5
6
7
8
spigot
h
a
k
g3
g2
g1
k
h
s

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
6.3
0.35
300
300
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 05, 2013.
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
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