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ID = 3797
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Triode, vacuum   Audio Frequency 
Identical to PM5
Similar Tubes
Other base:
First Source (s)
1926 : History of the British Radio Valve to 1940 p. 160

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 6 Volts / If 0.06 Ampere / Direct / Battery =

GB: PM5 is a British standard dull emitter valve. 6 Volts, small signal.


b4_base_pins~~73.png PM5: Fin Stewart
Fin Stewart

Just Qvigstad
Usage in Models 1= 1926 ; 1= 1943??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):2

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