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ONE-VOLT-ORA

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ID = 28670
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Triode, vacuum   Universal 
Identical to ONE-VOLT-ORA = 1-VOLT-ORA
First year 1924 Saga of the Vacuum Tube, Tyne page 378
First Source (s)
1924 : British Radio Valves - The Vintage Years: 1904-1925 p.56

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 1 Volts / If 0.25 Ampere / Direct
Information source British Radio Valves - The Vintage Years: 1904-1925   Page 118
70 Years of Radiotubes and V.   Page 223

b4_base_pins~~401.png ONE-VOLT-ORA: Fin Stewart
Fin Stewart


Just Qvigstad
one_volt_ora_spec.png
ONE-VOLT-ORA: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector

Collection of

 
mullard_onevoltora_bild1.jpg

ONE-VOLT-ORA
 

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