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D15

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ID = 14042
       
Country:
France
Brand: Grammont (Radiofotos, Fotos); Paris, Malakoff
Tube type:  Triode, vacuum   Detector 
Identical to D15
Similar Tubes
Normally replaceable-slightly different:
  A415 ; DZ1508 ; L410 ; LD410 ; PM4DX ; RE084
First Source (s)
1926 : Saga of the Vacuum Tube, Tyne p.403
Aug.1930 : Philips Bulletin R1164, p. 34
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.12 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   2-9-1933
1_1~~1.png D15: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		miniwattsmall2_4.png
D15: own collection
Peter den Boer
Usage in Models 1= 1927?? ; 1= 1931
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2

Collection of

John Hupse † 28.9.20 (NL)
Harald Giese (D)
Christian ADAM (F)
Rudolf Osterkamp (D)
Bruno Candreia (CH)
 
d15_bild1.png

D15
 
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