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TK24

Sensibly equivalent to:
AK2
    
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The Dario TK24 is an octode frequency changer or mixer. The octode had a better HF performance than the heptode and the final grid was a suppressor.
The pejorative term Foreign on imported valves of the time.
The classic envelope is 45 mm in diameter, and excluding the B7 base pins is 115 mm tall.
Reference: 1043. Type TK24 was first introduced in 1935.

 

Pin Connections
B7
1
2
3
4
5
6
7
tc
g2
g1
g3,g5
h
h
m,k
a
g4

 

Absolute Maximum Operating Conditions
Octode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
4.0
0.65
250
70
-1.5
1.6
3.0
1.5M
0.6
Updated January 07, 2017.
shape:classic construction:pinch type:octode age:1930.1940 base:b7 heater:4.0v pins:7 pin:1.g2 pin:2.g1 pin:3.g3.g5 pin:4.h pin:5.h pin:6.m.k pin:7.a pin:tc.g4
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