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XFY43

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ID = 49987
       
Country:
Great Britain (UK)
Brand: Hivac Ltd.; Harrow-on-the-Hill
Developer: Hivac Ltd.; Harrow-on-the-Hill 
Tube type:  Screen-grid Tetrode 
Identical to XFY43
Similar Tubes
Heater different:
  XFY33

Base Subminiatur (wire-ends, flat) B5A
Filament Vf 1.25 Volts / If 0.01 Ampere / Direct / Battery =
Description For Hearing Aid use with 15V HT. 1mW audio output 
Information source - - Manufacturers Literature   
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Just Qvigstad
xfy43_characteristics.png
XFY43: My schematic collection.
Pier Antonio Aluffi

More ...
Usage in Models 1= 1953?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of

 
hivac_xfy43.jpg

 

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