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CV1839

Sensibly equivalent to:
6F13
    
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The CV1839 is an HF pentode for use in HF, IF, frequency changer or video output stages of television and other short wave receivers. The commercial version is the Mazda 6F13.
The outer perforated screen. On top is the copper supported control grid with cooling fin above.
The original form of the B8A base with metal skirt and central spigot. Location of the equi-spaced eight pins was by the locating pip on the side of the base that fitted into a guide slot on the valve holder.
The thin glass tube envelope is 20 mm in diameter and, excluding the B8A base pins, is 52 mm tall.
References: Datasheet & 1040.

 

Pin Connections
B8A
1
2
3
4
5
6
7
8
h
a
s
g3
g2
g1
k
h

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.35
200
200
-1.8
10.0
2.6
0.9M
9.0
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated April 05, 2019.
shape:thin.glass.tube construction:all.glass type:pentode age:1940.1950 base:b8a heater:6.3v pins:8 pin:1.h pin:2.a pin:3.s pin:4.g3 pin:5.g2 pin:6.g1 pin:7.k pin:8.h
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