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Dex235

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ID = 28501
       
Country:
Great Britain (UK)
Brand: Economic Electric, London
Tube type:  Triode, vacuum   Universal 
Identical to Dex235
First year 1926 Saga of the Vacuumtube, Tyne Seite 388
First Source (s)
1925 : British Radio Valves - The Vintage Years, Thrower p.50

Base Europe 4-Pin (A, 4A, B4, since 1914)
Filament Vf 2 Volts / If 0.35 Ampere / Direct / Battery =
Description General name "Dextraudion". 
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