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DH504

Information - Help 
ID = 10019
       
Country:
Netherlands
Brand: Radio-Record - Röhrenmarke; Holland
Developer: Radio-Record - Röhrenmarke; Holland 
Tube type:  Vacuum Pentode   RF/IF-Stage 
  Ca. 1925 up to 1945 rare.
Identical to DH504
Similar Tubes
Normally replaceable-slightly different:
  E446 ; HP4100 ; RENS1284

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fco) Top contact screw type.
Filament Vf 4 Volts / If 1 Ampere / Indirect
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   
 
13_5~~4.png
DH504: Telefunken Werkstattbuch
Wolfgang Bauer

 
dh504data.png
DH504: own collection
Peter den Boer


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