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3S4SF

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ID = 27443
       
 
   
Tube type:  Vacuum Pentode 
Identical to 3S4SF = 3W4

Base Miniatur-7-Pin-Base B7G, USA 1940
Filament Vf 2.8 Volts / If 0.025 Ampere / Direct / Battery =
Information source -- Collector info (Sammler)   
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3s4sf_so.png 3S4SF: ARRL Handbook 1972
Anonymous 10 Collector


Just Qvigstad
Usage in Models 1= 1954?? ; 4= 1955?? ; 1= 1955? ; 1= 1956?? ; 1= 1956?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):8

Collection of

 
3s4sf_a.jpg

3S4SF
 

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