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ID = 5527
Tube type:  Half-Wave Vacuum Rectifier 
Identical to 17AY3A
Similar Tubes
Heater different:
  12AY3A ; 6AY3B

Base Novar, B9E = bigger than Noval, USA 1959
Filament Vf 16.8 Volts / If 0.45 Ampere / Indirect
Information source Essential Characteristics, GE 1973   

17ay3a_sockel.png 17AY3A: RCA Tube Manual
Peter Hoddow

Just Qvigstad
17AY3A: RCA Tube Manual
Peter Hoddow

Collection of



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