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T730

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ID = 16440
       
Country:
Netherlands
Brand: Radio-Record - Röhrenmarke; Holland
Developer: Radio-Record - Röhrenmarke; Holland 
Tube type:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to T730
Similar Tubes
Normally replaceable-slightly different:
  25/450 ; F704 ; W306_Marathon
Other base:
  PX2500

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 7.5 Volts / If 1.25 Ampere / Indirect / Specified current AC/DC ~ = (Series working)
Information source L'ABCDaire des lampes de TSF des jeunes années   p. 74
- - Manufacturers Literature   
Taschenbuch zum Röhren-Codex 1948/49
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren

f704_so~~3.png T730: rtt
Anonymous 10 Collector


Just Qvigstad
t730.png
T730: own collection
Peter den Boer

Collection of

 
t_730_x.jpg

 

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