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3S4SF

           
  Tube type:  Vacuum Pentode 
Tube ID = 27443
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Identical to 3S4SF = 3W4
Base Miniatur-7-Pin-Base B7G, USA 1940
Filament Vf 2.8 Volts / If: 0.025 Ampere / -: Direct / -: Battery = /
Literature -- Collector info (Sammler)   
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3s4sf_a.jpg
3S4SF: Private collection
Emilio Ciardiello
 
3s4sf_so.png
3S4SF: ARRL Handbook 1972
Michael Schlör
 
Usage in Models   1= 1954?? ; 3= 1955?? ; 1= 1955? ; 1= 1956?
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):   6
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