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MR615

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ID = 22459
       
 
   
Tube type:  Triode, vacuum   Audio Frequency 
Identical to MR615

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Direct / Battery =
Description Im Radio Lyt-o-Fon (oder Lyt-o-Ton), wahrscheinlich aus Dänemark zumindest als Typenschild neben der Röhrenfassung vermerkt. Hersteller? 
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Just Qvigstad
Usage in Models 1= 1928?? ; 1= 1929??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2
 

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