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SD4_Mullard

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ID = 20129
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Diode-Tetrode   RF/IF-Stage 
Identical to SD4_Mullard

Base Europe 7-Pin C7A (Hx C, C7, C) 1933 Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1.1 Ampere / Indirect / Specified voltage AC/DC

sd4_sock.png SD4_Mullard: M.E.
Mike Edwards † 25.10.21


Just Qvigstad
Usage in Models 2= 1933? ; 4= 1933 ; 1= 1934? ; 1= 1934

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):8

Collection of

 
sd4.jpg

SD4_Mullard
 

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