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CV1197

Sensibly equivalent to:
EC53 NR88 RL18
    
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The CV1197 is a UHF oscillator triode and the prototype was the RL18. The old Admiralty service code is NR88. The Mullard commercial version is the EC53.
Reference: Data-sheet. Type CV1197 was first introduced in 1941. See also 1941 adverts.

 

Pin Connections
B3G
1
2
3
tc
tc
h
k
k
a
g1

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
6.3
0.25
200
-3.3
7.5
11,500
2.9
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 19, 2017.
shape:thin.glass.tube construction:all.glass type:triode age:1940.1950 base:b3g heater:6.3v pins:3 pin:1.h pin:2.k pin:3.k pin:tc.a pin:tc.g1
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