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PT425

Information - Help 
ID = 11563
       
Country:
Great Britain (UK)
Brand:
Tube type:  Vacuum Pentode   Power/Output 
Identical to PT425
Similar Tubes
Normally replaceable-slightly different:
  D100 ; D60
First Source (s)
1929 : Saga of the Vacuumtube, Tyne p.386

Base (Codex=Foo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.25 Ampere / Direct / Battery =
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
gecpt4252_web.jpg
PT425: CA
Christian ADAM

 
pt425_data.png
PT425: MARCONI VALVES MANUAL
Jose Casas-Avalos


Usage in Models 2= 1929 ; 3= 1931 ; 9= 1932 ; 1= 1933 ; 1= 1934

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):16


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