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140R8

Information - Help 
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? ; 2= 1938 ; 1= 1939?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):7

Collection of

 
140r8_6625_side_view_w_mm_ruler_cp2rt1medres.jpg

 

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