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E420

Information - Help 
ID = 15811
       
Country:
Austria
Brand: Triotron (tubes) = Brand of Schrack, Austria
Tube type:  Triode, vacuum   Power/Output 
Identical to E420
Similar Tubes
Normally replaceable-slightly different:
  L4

Base Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Eo)
Filament Vf 4 Volts / If 0.15 Ampere
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
e420_2.jpg
E420: Röhrensammlung
Wolfgang Bauer

 
1_28.png
E420: Telefunken Werkstattbuch
Wolfgang Bauer

 

Usage in Models 1= 1932??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1


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