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ID = 27656
United States of America (USA)
Brand: Western Electric Company Inc.; New York (NY)
Tube type:  Screen-grid Tetrode 
Identical to 259A
Similar Tubes
Normally replaceable-slightly different:
Other characteristic (electr. data):
  245A_W.E. ; 283A

Base UY-Base, 5 Pins (USA, April 1927) Top contact with a cap.
Filament Vf 2 Volts / If 1.6 Ampere / Indirect / Specified voltage AC/DC
Description Similar to 245A with higher Gm, 1.3 to 1.5mS; controlled microphonics. ST14 bulb, UY base with locating pin. 
Information source Babani, International Radio Tube Encyclopaedia   
Tube Lore (I)   
- - Manufacturers Literature

Just Qvigstad
259A: KoBi
Konrad Birkner † 12.08.2014

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Usage in Models 1= 1929?

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


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