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ID = 43683
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Tube type:  Triode, vacuum   Audio Frequency 
  Ca. 1925 up to 1945 rare.
Identical to L410_Marconi_UX
Similar Tubes
Other base:

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.1 Ampere / Direct / Battery =

Low-gain triode intended as low-level audio amplifier. Mu 15.

Dimensions (WHD)
incl. pins / tip
44 x 106 x mm / 1.73 x 4.17 x inch
Weight 46 g / 1.62 oz
Information source History of the British Radio Valve to 1940   Page 164

uxsockel_11_5.png L410_Marconi_UX: pin connections for UX201A.
Stuart Irwin

Just Qvigstad
Usage in Models 4= 1930

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):4

Collection of



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