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Oscilaudion

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ID = 51305
       
Country:
United States of America (USA)
Brand: Roome, Harry V.; Los Angeles (CA)
Tube type:  TRIODE (Detail uncertain)   Universal 
  <1925 very rare. ***
Identical to Oscilaudion
Similar Tubes
Normally replaceable-slightly different:
  AudioTron ; Electron_Audio ; LibertyValve ; Thermotron
First Source (s)
Jan.1916 : -- Original prospect or advert

Base Wires
Filament Direct / Battery =
Description Advertisement in Wireless Age, Jan. 1916. Price $7.50.
Virtuall similar The same tube was offered as "Thermo Tron" for $5.25. 
Information source Saga of the Vacuum Tube, Tyne   p.165
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Usage in Models 1= 1916

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1
 
roome_oscillaudion_tube_ee_816.jpg

 

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