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V21

Information - Help 
ID = 8340
       
Country:
France
Brand: Grammont (Radiofotos, Fotos); Paris, Malakoff
Tube type:  Half-Wave Vacuum Rectifier   Power-supply 
  Ca. 1925 up to 1945 rare.
Identical to V21

Base Europe 3-Pin B3 (Eu H) (Codex=Eo)
Filament Vf 4 Volts / If 0.3 Ampere / Direct
Dimensions (WHD)
incl. pins / tip
50 x 116 x 35 mm / 1.97 x 4.57 x 1.38 inch
Weight 60 g / 2.12 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
v21fotosgrammontsmall.jpg
V21: own collection
Peter den Boer

 

from Just Qvigstad

Usage in Models 1= 1930?

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


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