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PT4N

Information - Help 
ID = 18967
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Tube type:  Vacuum Pentode   Power/Output 
Identical to PT4N
Similar Tubes
Normally replaceable-slightly different:
  PT4

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928
Filament Vf 4 Volts / If 1 Ampere / Direct / Specified voltage AC/DC
Description The PT4 was re-designed in 1932 to have a heater current of 1A 
 

from Just Qvigstad

Usage in Models 12= 1932 ; 8= 1933

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):20

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