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DF-ORA

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ID = 28663
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Triode, vacuum   Universal 
Identical to DF-ORA
First year 1924 ? 70 Years of Radiotubes and V.

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.06 Ampere / Direct / Battery =
Information source British Radio Valves - The Vintage Years: 1904-1925   Page 118

b4_base_pins~~62.png DF-ORA: Fin Stewart
Fin Stewart


Just Qvigstad
df_ora_spec.png
DF-ORA: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector

Collection of

 
df_ora.jpg

DF-ORA
 

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