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D3_LF

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ID = 30707
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Triode, vacuum   Audio Frequency 
Identical to D3_LF
First Source (s)
1924 : British Radio Valves - The Vintage Years: 1904-1925 p. 117

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 1.8 Volts / If 0.3 Ampere / Direct / Battery =
Description

Green Ring

 
Information source

b4_base_pins~~399.png D3_LF: Fin Stewart
Fin Stewart


Just Qvigstad
d3lf_spec.png
D3_LF: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector

Collection of

 
d3_mullard.jpg

D3_LF
 

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