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M212

Information - Help 
ID = 14487
       
Country:
Netherlands
Brand: Radio-Record - Röhrenmarke; Holland
Developer: Radio-Record - Röhrenmarke; Holland 
Tube type:  Triode, vacuum 
  Ca. 1925 up to 1945 rare.
Identical to M212
Similar Tubes
Normally replaceable-slightly different:
  A225 ; RE052

Base Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Eo)
Filament Vf 2 Volts / If 0.12 Ampere / Direct / Battery =
Description HF and LR, resister coupling. 
Literature Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   1934
 
m212_sock.png
M212: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

 
m212.png
M212: own collection
Peter den Boer


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