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140R8

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ID = 18020
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Current Regulator, Iron in Hydrogen 
Identical to 140R8
Base UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bc)
Filament
Information source Taschenbuch zum Röhren-Codex 1948/49   
0_ball_11_41.png 140R8
Emilio Ciardiello

Just Qvigstad
Usage in Models 3= 1937 ; 1= 1938? ; 3= 1938 ; 1= 1939?
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):8

Collection of

Gary Brandenburger (USA)
 
140r8_6625_side_view_w_mm_ruler_cp2rt1medres.jpg

 
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