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ID = 38590
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Vacuum Pentode   Power/Output 
Identical to PM25_5pin
Predecessor Tubes PM24D  

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928
Was used by Radio/TV-reception etc.
Filament Vf 6 Volts / If 0.1 Ampere / Direct / Specified voltage AC/DC

Information on the valve/tube states:- "Fil. volts 6" "Max Anode Volts 150".
The designation PM25 is clear.
The filament voltage is correct and the 0.1A current measured from a working sample.

Dimensions (WHD)
incl. pins / tip
48 x 108 x mm / 1.89 x 4.25 x inch
Weight 53 g / 1.87 oz
Information source History of the British Radio Valve to 1940   p. 187
PM25_5pin: RFJ
Roy Johnson

More ...
PM25_5pin: Fin Stewart
Fin Stewart


from Just Qvigstad

Usage in Models 1= 1935?

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

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