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Tigerman

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ID = 66985
       
Country:
United States of America (USA)
Brand: National Electric Manufacturing Co. (NEM); Chicago
Tube type:  Triode, vacuum 
  <1925 very rare. ***
Identical to Tigerman
Similar Tubes
Multiple differences or of other kind:
  Weagant

Base Edison (candelabra) 12 mm Base on each end.
Was used by Radio/TV-reception etc.
Filament Direct / Battery =
Description

The Tigerman Detecto-Amplifier tube was made by the National Electric Manufacturing Company of Chicago, Illinois and was advertised in 1916. According to Tynes book "Saga of the Vacuum Tube" pages 181 & 182, the tube was double ended with two sets of filament-anode electrodes, one at each end. The control electrodes were applied on the outside of rthe glass tube and were simple metallic bands clamped around the outside of the tube.The tube was about 5 inches long and had a candleabra (E12) base on each end. In effect, it was two Weagant tubes in one bulb.

 
Dimensions (WHD)
incl. pins / tip
125 x x mm / 4.92 x x inch
Information source Saga of the Vacuum Tube, Tyne   Pages 180 & 181 & 185
-- Collector info (Sammler)   

 
tigerman_al_larsen_collection.jpg

Tigerman
 

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