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PT625

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ID = 25482
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Tube type:  Vacuum Pentode   Power/Output 
Identical to PT625
Similar Tubes
Normally replaceable-slightly different:
  PX240
First Source (s)
1929 : Saga of the Vacuum Tube, Tyne p.386
1929 : History of the British Radio Valve to 1940 p. 148 & 185
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 6 Volts / If 0.25 Ampere / Direct / Specified voltage AC/DC
Information source -- Collector info (Sammler)   Mullard Master Valve Catalogue 1936-37
The Saga of Marconi Osram Valve   p. 151 & 332
b5~~46.png PT625: Fin Stewart
Fin Stewart

Just Qvigstad 		pt625_data.png
PT625: MARCONI VALVES MANUAL
Jose Casas-Avalos
Usage in Models 3= 1930 ; 1= 1931? ; 6= 1931 ; 2= 1932
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):12

Collection of

Georges Van Campenhout † 28.4.22 (B)
 
pt625_nr2.jpg

PT625
 
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