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ID = 28767
Tube type:  Triode, vacuum   Audio Frequency 
  <1925 very rare. ***
Identical to White-valve
First year 1916 Saga of the Vacuum Tube, Tyne page 213, 214

Base Swan-Bajonett B22=22 mm Top contact screw type.
Was used by Military and/or Government
Filament If 2.8 Ampere / Direct

Röhre von G. W. White im Cavendish Laboratory, Cambridge, Great Britain entwickelt. Sie wurde im Mark III Verstärker und Mark III Kurzwellenempfänger in Kombination mit einer deForest Audionröhre eingesetzt.

Dimensions (WHD)
incl. pins / tip
x 145 x 60 mm / x 5.71 x 2.36 inch
Weight 52 g / 1.83 oz
Information source Saga of the Vacuum Tube, Tyne   page 213, 214
History of the British Radio Valve to 1940   pages 33,34 & 126
White-valve: Fin Stewart collection
Fin Stewart

White-valve: Tyne, Saga of the Vacuum Tube
Anonymous 15 Collector


from Just Qvigstad

Usage in Models 1= 1917?

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

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