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DF31

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ID = 10009
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to DF31
Similar Tubes
Different connections:
  DF21

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uu)
Was used by Radio/TV-reception etc.
Filament Vf 1.4 Volts / If 0.025 Ampere / Direct / Battery =
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
df31_so.png
DF31: rtt
Michael Schlör

 

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