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A420

Information - Help 
ID = 13701
       
Country:
Austria
Brand: Triotron (tubes) = Brand of Schrack, Austria
Tube type:  Triode, vacuum 
Identical to A420
Similar Tubes
Normally replaceable-slightly different:
  A408

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 4 Volts / If 0.085 Ampere / Direct
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
a420.jpg
A420: K.K.
Anonymous 719 Collector

 
1_9.png
A420: Telefunken Werkstattbuch
Wolfgang Bauer

 

from Just Qvigstad

Collection of a member from D

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