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XR4

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ID = 32901
       
Country:
Great Britain (UK)
Brand: Hivac Ltd.; Harrow-on-the-Hill
Tube type:  Vacuum Pentode 
Identical to XR4
Similar Tubes
Normally replaceable-slightly different:
  6147

Base Subminiatur-8, with space 1/8, B8D
Filament Vf 1.2 Volts / Direct
Description AF subminiature pentode. 


Just Qvigstad
xr4_characteristics_1.png
XR4: My schematic collection.
Pier Antonio Aluffi

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xr4.jpg

 

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