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Dn44

Information - Help 
ID = 12675
       
Country:
Netherlands
Brand: Radio-Record - Röhrenmarke; Holland
Tube type:  Dual-Grid Tetrode   Frequency converter 
Identical to Dn44
Similar Tubes
Normally replaceable-slightly different:
  DG4100 ; E441
Other base:
  Dn44_Spezialsockel

Base Europe 5-Pin , B5 + side contact (Codex=Fa)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Description

Va=70-100 Gm=1.5 amp factor=4.5 and Rint=3000 ohms. (Radio-Expres 1930)

 
Text in other languages (may differ)
Information source Taschenbuch zum Röhren-Codex 1948/49   
Radio-Expres, Netherlands   
 
dn44_sock.png
Dn44: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

 
dn44.png
Dn44: own collection
Peter den Boer


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