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X201B

Information - Help 
ID = 75720
       
Country:
United States of America (USA)
Brand:
Tube type:  Triode, vacuum   Audio Frequency 
Identical to X201B = UX-201B = 201B

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Radio/TV-reception etc.
Filament Vf 5 Volts / If 0.125 Ampere / Direct / Battery =
Description This tube is a thoriated tungsten filament version of the 201/UX201, with reduced current drain. 
Dimensions (WHD)
incl. pins / tip
x 108 x 45 mm / x 4.25 x 1.77 inch
Weight 47 g / 1.66 oz
Information source -- Original prospect or advert   Allied Radio Corp catalogue p. 51, 1929
 
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X201B: Fin Stewart
Fin Stewart

 

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