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D407

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ID = 9314
       
Country:
Austria
Brand: Triotron (tubes) = Brand of Schrack, Austria
Tube type:  OCTODE   Frequency converter   Controlling (mu) 
Identical to D407

Base Europe 7-Pin C7A (Hx C, C7, C) 1933 (Codex=Leo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.65 Ampere / Indirect / Specified voltage AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   

18_4.png D407: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad

Collection of

 
d407_1.jpg

 

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