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CV66

Sensibly equivalent to:
EC54 RL37
    
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The CV66 is an early all glass valve in an aluminium screening can, was designed as an RF amplifier operating in grounded grid configuration. The multiple connection points are to reduce lead inductance, and thereby increase the useful operating frequency.
The CV66 was originally known as the RL37. When issued commercially it was given the Type designation EC54.
See also EC52.
The wide glass tube envelope is 32 mm in diameter and, excluding the B9G base pins, is 60 mm tall.
References: Datasheet, 1043 & 4034. Type CV66 was first introduced in 1946.

 

Pin Connections
B9G
1
2
3
4
5
6
7
8
9
h
g1
g1
a
a
g1
g1
k
h

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
6.3
0.45
250
0
12
11100
9
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 01, 2013.
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