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ID = 65810
Great Britain (UK)
Brand: Hivac Ltd.; Harrow-on-the-Hill
Developer: Hivac Ltd.; Harrow-on-the-Hill 
Tube type:  Vacuum Pentode   Audio Frequency 
  Ca. 1925 up to 1945 rare.
Identical to XW2.0 = HY115

Base Hivac 5 pin 2 of them thick Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.08 Ampere / Direct / Battery =

Ratheiser, Röhrenhandbuch, 1948

Dimensions (WHD)
incl. pins / tip
20 x 76 x mm / 0.79 x 2.99 x inch
Information source Babani, International Radio Tube Encyclopaedia   Pages 166 & 167
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Pages 206 & 207
XW2.0: Fin Stewart
Fin Stewart


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