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M104

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ID = 16050
       
Country:
Netherlands
Brand: Radio-Record - Röhrenmarke; Holland
Developer: Radio-Record - Röhrenmarke; Holland 
Tube type:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to M104
Similar Tubes
Normally replaceable-slightly different:
  B409
First year 1927 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
1927 : Radio-Expres, Netherlands

Base Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Eo)
Filament Vf 4 Volts / If 0.35 Ampere / Direct / Battery =
Description Va=150, gm=2. 
Literature Taschenbuch zum Röhren-Codex 1948/49   
Radio-Expres, Netherlands   
- - Manufacturers Literature
 
m104_sock.png
M104: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

 
m104.png
M104: own collection
Peter den Boer


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