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CV1193

Sensibly equivalent to:
CV3826 NR82 VR99 X65
    
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The specification for the CV1193 was based on the X65 and before the CV register the service code was NR82.
This CV1193 is an example of Canadian metallic spray coating on a war effort valve supplied to a British/European design. The distinctive thin black coating is characteristic of Canadian manufacture and, like the American coatings, was more robust than the British original.
This triode hexode frequency changer was designed by Marconi. It was for superhet use and radio or radar reception would have been the area of usage.
The oscillator section would be run from a stabilised supply and the injection voltage was designed to be 10 Volts peak to peak. As was typical of the time the signal was applied to g1 and this was brought out to the top cap for maximum isolation.
The wide glass tube envelope is 28 mm in diameter and, excluding the IO base pins, is 93 mm tall.
References: Datasheet & 1040.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
tc
m
h
a
g2,g4
g1(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

 

Absolute Maximum Operating Conditions
Triode
Va
mAa
100
4.75
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 09, 2013.
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