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ID = 25394
United States of America (USA)
Brand: Western Electric Company Inc.; New York (NY)
Developer: Western Electric Company Inc.; New York (NY) 
Tube type:  Screen-grid Tetrode   Universal 
Identical to 245A_W.E.
Similar Tubes
Other shape (e.g. bulb type):
Normally replaceable-slightly different:
Other characteristic (electr. data):
  259A ; UY224
Heater different:
First Source (s)
1929 : Saga of the Vacuum Tube, Tyne

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

Improved, low-microphonics and controlled quality version of UY224. ST14 bulb, UY base with locating pin. 0.75mS Gm.

Dimensions (WHD)
incl. pins / tip
x 123 x 45 mm / x 4.84 x 1.77 inch
Weight 48 g / 1.69 oz
Information source Babani, International Radio Tube Encyclopaedia   p. 30& 31
- - Manufacturers Literature   
Tube Lore (I)
Tube Lore (II)

245a.png 245A_W.E.: Western electric electron tubes
Miguel Angel Trujillo-Rodriguez

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