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Wecovalve_orange_B4

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ID = 69941
       
Country:
Great Britain (UK)
Brand: Western Electric Co. Ltd.; London
Developer: Western Electric Co. Ltd.; London 
Tube type:  Triode, vacuum   Audio Frequency 
  <1925 very rare. ***
Identical to Wecovalve_orange_B4

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 0.8 Volts / If 0.25 Ampere / Direct / Battery =
Description

This tube is an audio amplifier type and has an orange spot on the glass near the base. Anode voltage 15 - 30, grid voltage -3 to -5

 
Dimensions (WHD)
incl. pins / tip
x 95 x 28 mm / x 3.74 x 1.10 inch
Information source British Radio Valves - The Vintage Years: 1904-1925   page 122

b4_1~~82.png Wecovalve_orange_B4: Fin Stewart
Fin Stewart


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