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T4400

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ID = 13070
       
Country:
France
Brand: Grammont (Radiofotos, Fotos); Paris, Malakoff
Tube type:  Diode-Tetrode 
  Ca. 1925 up to 1945 rare.
Identical to T4400
Similar Tubes
Normally replaceable-slightly different:
  DS4100 ; E444 ; RENS1254

Base Europe 7-Pin C7A (Hx C, C7, C) 1933 (Codex=Le)
Filament Vf 4 Volts / If 1.2 Ampere / Indirect / Specified voltage AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   2-9-1933


Just Qvigstad
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T4400: own collection
Peter den Boer

Collection of

 
t4400.jpeg

 

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