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DM15

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ID = 12673
       
Country:
Netherlands
Brand: Radio-Record - Röhrenmarke; Holland
Developer: Radio-Record - Röhrenmarke; Holland 
Tube type:  Space Charge Tetrode 
  Ca. 1925 up to 1945 rare.
Identical to DM15 = 15_Radio-Record
Similar Tubes
Normally replaceable-slightly different:
  A241
First year 1927 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Sep.1927 : Funk Bastler 1927 Heft 39

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 Sidecontact.
Filament Vf 2 Volts / If 0.1 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   

a241_sock~~1.png DM15: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector


Just Qvigstad
dm15dm300.png
DM15: own collection
Peter den Boer

Collection of

 
dm15_r.jpg

 

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