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PT240_B4

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ID = 67656
       
Country:
Great Britain (UK)
Brand: Lissen Ltd.; London and Richmond, Surrey
Tube type:  Vacuum Pentode   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to PT240_B4
Similar Tubes
Other base:
  PT240_Lissen

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 Sidecontact.
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.4 Ampere / Direct / Battery =
Information source - - Manufacturers Literature   1930
History of the British Radio Valve to 1940   P. 147

tubesockel_klein_b443~~4.gif PT240_B4: RPG Funke
Wolfgang Holtmann


Just Qvigstad
pt240~~1.png
PT240_B4: own collection
Peter den Boer

 

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