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W4

Information - Help 
ID = 15034
       
Country:
Austria
Brand: Kremenezky, Johann (Sator); Wien,(Röhrenhersteller)
Tube type:  Triode, vacuum 
  Ca. 1925 up to 1945 rare.
Identical to W4
Similar Tubes
Normally replaceable-slightly different:
  407W ; A425 ; HR406 ; RE034 ; W412

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.1 Ampere / Direct / Battery =
Description

The same tube (W4) is also branded Sator and Orion.

 
Dimensions (WHD)
incl. pins / tip
47 x 88 x mm / 1.85 x 3.46 x inch
Weight 50 g / 1.76 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   Sator Röhrenliste 1934
 
w4_kremenezky.jpg
W4: g.heigl
Gerhard Heigl

 
sockel_4stift_triode.png
W4: g.heigl
Gerhard Heigl

 
daten_w4_kremenezky_1.png
W4: g.heigl
Gerhard Heigl


from Just Qvigstad

Usage in Models 1= 1938

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


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