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ID = 74723
United States of America (USA)
Brand: DeForest-Tubes
Developer: DeForest-Tubes 
Tube type:  Triode, vacuum   Audio Frequency 
Identical to Audion_14-Hudson-fil = Audion_13-Hudson-fil

Base Edison (candelabra) 12 mm Other combinations of connections.
Was used by Radio/TV-reception etc.
Filament Direct / Battery =
Description In this tube the tungsten filament is dipped in a tantalum past as developed by Walter G Hudson, a client of McCandless. This improved sensitivity somewhat over the earlier tantalum wire type (Audion_13-Hudson-Fil-1). 
Dimensions (WHD)
incl. pins / tip
x x 54 mm / x x 2.13 inch
Information source Saga of the Vacuum Tube, Tyne   Pages 112 & 113


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