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B25_Radiofotos

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ID = 49526
       
Country:
France
Brand: Grammont (Radiofotos, Fotos); Paris, Malakoff
Tube type:  Triode, vacuum 
  Ca. 1925 up to 1945 rare.
Identical to B25_Radiofotos
Similar Tubes
Normally replaceable-slightly different:
  A435 ; DZ3529 ; PM3A

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Vf 4 Volts / If 0.06 Ampere / Direct / Battery =
Information source - - Manufacturers Literature   2-9-1933
 
b25_radiofoto_grammont_eq_re034_ebay_p1_s.jpg
B25_Radiofotos: Ebay
Patrice Zeissloff

 
4l15_sock~~1.png
B25_Radiofotos: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

 
miniwattsmall2.png
B25_Radiofotos: own collection
Peter den Boer


from Just Qvigstad

Usage in Models 1= 1931

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


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