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XFW20

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ID = 49989
       
Country:
Great Britain (UK)
Brand: Hivac Ltd.; Harrow-on-the-Hill
Developer: Hivac Ltd.; Harrow-on-the-Hill 
Tube type:  Vacuum Pentode   Audio Frequency 
Identical to XFW20

Base Subminiatur (wire-ends, flat) B5A Wires only.
Filament Vf 0.625 Volts / If 0.0125 Ampere / Direct / Battery =
Description For Hearing Aid use. Improved heater efficiency from the XFW10 
Information source - - Manufacturers Literature   

gb_hivac_xfw20_connections.png XFW20: Wireless World H. F. editor, May 1950
Pier Antonio Aluffi


Just Qvigstad
gb_hivac_xfw20_characteristics.png
XFW20: Wireless World H.F. editor, May 1950
Pier Antonio Aluffi

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