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1A2

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ID = 17901
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Current Regulator, Iron in Hydrogen 
Identical to 1A2

Base UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bd)
Filament
Information source Taschenbuch zum Röhren-Codex 1948/49   

1a2_sock.png 1A2: Tabu Röhren-Codex, 1948
Anonymous 15 Collector


Just Qvigstad
Usage in Models 3= 1935 ; 2= 1936

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):5
 

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