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EM31

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ID = 6442
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Magic Eye, generally   Indication 
Identical to EM31 = Vi77 = AW6 = CV1077
Similar Tubes
Normally replaceable-slightly different:
  E1180

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=U)
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.2 Ampere / Indirect / Specified voltage AND current AC/DC
Information source British Radio Valves - The Classic Years: 1926-1946   Suplement, p. 153
-- Original-techn. papers.   
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren
Taschenbuch zum Röhren-Codex 1948/49

em31_2.png EM31: Manufacturer's Literature
Emilio Ciardiello


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