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S415_Fotos

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ID = 67042
       
Country:
France
Brand: Grammont (Radiofotos, Fotos); Paris, Malakoff
Tube type:  Triode, vacuum   Universal 
  Ca. 1925 up to 1945 rare.
Identical to S415_Fotos
Similar Tubes
Normally replaceable-slightly different:
  E415 ; REN804
First Source (s)
Aug.1930 : Philips Bulletin R1164, p. 35

Base Europe 4-Pin B4 + side contact
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC
Information source - - Manufacturers Literature   
Röhren-Vademecum; P.H. Brans; Antwerpen   p. 76
Universal Vade-Mecum, Electron Valves and Semiconductor Devices


Just Qvigstad
s440_s415_t4150data~~2.png
S415_Fotos: own collection
Peter den Boer

Usage in Models 1= 1931

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of

Collection of a member from D
 
s415_bild2.jpg

S415_Fotos
 

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