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244A

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ID = 25392
       
Country:
United States of America (USA)
Brand: Western Electric Company Inc.; New York (NY)
Developer: Western Electric Company Inc.; New York (NY) 
Tube type:  Triode, vacuum   Audio Frequency 
Identical to 244A
Similar Tubes
Normally replaceable-slightly different:
  TB-605-A
Other class quality (otherwise equal):
  247A ; MY227
Other characteristic (electr. data):
  UY227
First Source (s)
1929 : Saga of the Vacuum Tube, Tyne
Successor Tubes 285A  

Base UY-Base, 5 Pins (USA, April 1927)
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 1.6 Ampere / Indirect / Specified voltage AC/DC
Description

Mu 10, Gm 0.5 to 1.2mS; low microphonics and sputter noise. Intended for low-level audio preamplifier applications.
Improved, low-noise substitution for UY227.

 
Dimensions (WHD)
incl. pins / tip
x 108 x 45 mm / x 4.25 x 1.77 inch
Weight 48 g / 1.69 oz
Information source Babani, International Radio Tube Encyclopaedia   W.E.Greybar catalog 1933
- - Manufacturers Literature   
Tube Lore (I)
Tube Lore (II)

244as.gif 244A: KoBi
Konrad Birkner † 12.08.2014

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Just Qvigstad
244ad.png
244A: KoBi
Konrad Birkner † 12.08.2014

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Usage in Models 1= 1928?

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

Collection of

 
screenshot_20230526_183306_gallery.jpg

244A
 

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