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Y220_4pin

Information - Help 
ID = 72067
       
Country:
Great Britain (UK)
Brand: Hivac Ltd.; Harrow-on-the-Hill
Tube type:  Vacuum Pentode   Power/Output 
Identical to Y220_4pin
Similar Tubes
Other base:
  Z220

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 Top contact with a cap.
Filament Vf 2 Volts / If 0.2 Ampere / Direct / Battery =
Description

Employs the Harries critically-spaced anode geometry.

 
Information source Wireless World (The), London (WW, 79)   
 

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