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PT425_5pin

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ID = 20071
       
Country:
Great Britain (UK)
Brand: Gecovalve (Geco) = Brand of General Electric (GB)
Tube type:  Vacuum Pentode   Power/Output 
Identical to PT425_5pin
Similar Tubes
Normally replaceable-slightly different:
  C443

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.25 Ampere / Direct / Specified voltage AC/DC
Information source History of the British Radio Valve to 1940   P. 147
 
pt425_1.jpg
PT425_5pin: R. Aufils
Raynal Aufils

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pt4255pin_so.png
PT425_5pin: rtt
Anonymous 10 Collector

 

from Just Qvigstad

Usage in Models 1= 1929

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


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