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K42C

Information - Help 
ID = 24213
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  REGULATOR-/CONTROL-TUBE (general) 
Identical to K42C

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament
Description used in 110V AC-DC Sets 
Text in other languages (may differ)
Information source Ballast Tube Handbook, The   
 

from Just Qvigstad

Usage in Models 5= 1936 ; 1= 1938 ; 1= 1939?

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

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