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6K8G - CV1193 - CV3826 - NR82 - VR99 - X147 - ECH35 - OM10 - Z61M - X61M
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HMS Collingwood
The X65 is a triode hexode. The X65 is the commercial version of the RAF pre WW2 VR99.
The triode was designed for local oscillator use and an injection voltage of 10 V peak to peak was produced. The hexode mixer took the signal into the top cap grid, thus maintaining the greatest separation between grid and anode circuits.
The classic envelope is 37 mm in diameter and, excluding the IO base pins, is 93 mm tall.
 
Pin Connections
IO
1
2
3
4
5
6
7
8
tc
m
h
a
g2,g4
g(t),g3
a(t)
h
k
g1
 
Absolute Maximum Operating Conditions
Hexode
Vh
Ah
Va
Vs
Vg
mAa
ra
gm
6.3
0.3
250
100
-3
1.75
2.5M
0.225