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ID = 55817
Brand: Annaka Electric Co.; - from 1931 called Anritsu.
Tube type:  Triode, vacuum   Detector 
  <1925 very rare. ***
Identical to AAB-5 = Annaka-AAB-5

Base Wires Wires only.
Was used by Military and/or Government
Filament Direct / Battery =
Description Triode valve made in Japan by Annaka Denki about 1916. Copy of de Forest or Cunningham Audiotron. 
Dimensions (WHD)
incl. pins / tip
x 80 x 28 mm / x 3.15 x 1.10 inch
Weight 22 g / 0.78 oz
Information source Saga of the Vacuum Tube, Tyne   p.277

tf2~~7.png AAB-5: Fin Stewart
Fin Stewart

Collection of



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