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M15

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ID = 14473
       
Country:
Netherlands
Brand: Radio-Record - Röhrenmarke; Holland
Developer: Radio-Record - Röhrenmarke; Holland 
Tube type:  Triode, vacuum 
  Ca. 1925 up to 1945 rare.
Identical to M15
Similar Tubes
Normally replaceable-slightly different:
  A209
First year 1927 Tube leaflet collection E.Erb Analysis by original leaflets

Base Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Eo)
Filament Vf 2 Volts / If 0.1 Ampere / Direct / Battery =
Literature Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   
 
m15_sock.png
M15: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

 
m15m300.png
M15: own collection
Peter den Boer


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