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ID = 20697
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Pentagrid-Converter (Heptode)   Controlling (mu) 
Identical to DK32_Mullard
Similar Tubes
Normally replaceable-slightly different:

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Vf 1.4 Volts / If 0.05 Ampere / Direct / Battery =
Description Va<110, Ik<4mA 
Dimensions (WHD)
incl. pins / tip
30 x 102 x mm / 1.18 x 4.02 x inch
DK32_Mullard: H.C.
Howard Craven

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DK32_Mullard: rtt
Anonymous 10 Collector

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DK32_Mullard: Roy Johnson
Götz Linss † 27.06.21

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