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6F24

Sensibly equivalent to:
EF814
See also:
6F24 Advert - Valves and Their Habits
    
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The 6F24 is a high slope screened pentode for use in television receivers most likely at IF. The high mutual conductance is achieved by using frame grid techniques and thus very close cathode to control grid spacing.
The 6F24 is a higher gain version of the 6F23 and the 6F25 is the vari-μ version.
The wire grids can just be glimpsed within the outer screen.
Thanks to Mark Mallison for sending the image.
The thin glass tube envelope is 20 mm in diameter, and excluding the B9G base pins is 48 mm tall.
Reference: Advert.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
k
g1
k
h
h
s
a
g2
g3

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
μ
6.3
0.3
250
250
-2.25
10.0
2.7
15.0
65
Updated February 18, 2019.
shape:thin.glass.tube construction:all.glass type:pentode age:1960.1975 base:b9a heater:6.3v pins:9 pin:1.k pin:2.g1 pin:3.k pin:4.h pin:5.h pin:6.s pin:7.a pin:8.g2 pin:9.g3
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