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ID = 25922
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Tube type:  Triode, vacuum   Audio Frequency 
Identical to DE8LF
Similar Tubes
Heater different:
Other base:
First Source (s)
1925 : British Radio Valves - The Vintage Years: 1904-1925 p.53

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 6 Volts / If 0.12 Ampere / Direct / Battery =

2nd AF amplifier following a DE8HF.

Characteristics stated by the manufacturer to be "almost identucal to the DE5B apart from the lower heater current".

Information source Saga of the Vacuum Tube, Tyne   Grundig Röhren-Taschenbuch, 1948
Wireless World (The), London (WW, 79)   Tested by WW report Jan 6 1926 p16.

b4_base_pins~~48.png DE8LF: Fin Stewart
Fin Stewart

Just Qvigstad
DE8LF: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector

More ...
Usage in Models 1= 1926

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

Collection of



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