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4215AB

Information - Help 
ID = 19011
       
Country:
Great Britain (UK)
Brand: Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Tube type:  Triode, vacuum   Universal 
Identical to 4215AB
Similar Tubes
Normally replaceable-slightly different:
  4239A
Other base:
  215A ; 215A_Nissl ; 4215A

Base Europe 4-Pin (A, 4A, B4, since 1914)
Filament Vf 1.1 Volts / If 0.25 Ampere / Direct / Battery =
Description Similar to the 215A but European B4 socket. 
Literature Saga of the Vacuumtube, Tyne   
 
b4_1~~80.png
4215AB: Fin Stewart
Fin Stewart

 
42151.png
4215AB: own collection
Peter den Boer


Usage in Models 1= 1924

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

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