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ID = 25221
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to 12Y-V1 = 12YV1
Similar Tubes
Heater different:
  12Y-V1A ; 12YV1A
Successor Tubes 12Y-V1A  

Base UY-Base, 5 Pins (USA, April 1927)
Filament Vf 12 Volts / If 150 Ampere / Indirect / Specified voltage AC/DC
Description Japan. Ua= 230 V; Ug2= 100 V; Ug1=-3V; Ia= 8.2mA; Ig2= 2.2mA; S= 1,6 mA/V; or Ua= 180 V; Ug2= 75 V; Ug1=-3V; Ia= 4 mA; S= 1,2 mA/V; (Babani) 
Information source Babani, International Radio Tube Encyclopaedia   
-- Collector info (Sammler)   

12ysockel_1.gif 12Y-V1: KoBi
Konrad Birkner † 12.08.2014

Just Qvigstad
Usage in Models 1= 1940 ; 1= 1941? ; 1= 1942? ; 1= 1943 ; 1= 1946 ; 1= 1947??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):6


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