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M49F

Information - Help 
ID = 24768
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Ballast Tube (neither FeH or Urdox) 
Identical to M49F

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   


Just Qvigstad
Usage in Models 2= 1938 ; 1= 1939

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3

Collection of

 
m49f_ballast.jpg

 

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