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407W

Information - Help 
ID = 13552
       
Country:
Austria
Brand: Eagle, Wien
Tube type:  Triode, vacuum 
  Ca. 1925 up to 1945 rare.
Identical to 407W
Similar Tubes
Normally replaceable-slightly different:
  A425 ; RE034 ; W4

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.07 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   Preisliste 1931
 
407w_eagle_front.jpg
407W: D. G.
Dietrich Grötzer

 
407w_so.png
407W: rtt
Michael Schlör

 
4volt~~2.png
407W: own collection
Peter den Boer


from Just Qvigstad


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