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ZM144

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ID = 17896
       
Country:
Netherlands
Brand: Radio-Record - Röhrenmarke; Holland
Developer: Radio-Record - Röhrenmarke; Holland 
Tube type:  Double Triode 
  Ca. 1925 up to 1945 rare.
Identical to ZM144
First year 1927 Tube leaflet collection E.Erb Analysis by original leaflets

Base Europe 4-Pin (A, 4A, B4, since 1914) 2 Sidecontacts
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.7 Ampere / Direct / Battery =
Description Two M144 tubes in one envelope. 
Literature Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   
 
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ZM144
Peter den Boer

 
zm144.png
ZM144: own collection
Peter den Boer


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