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BK49B

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ID = 43033
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Ballast Tube (neither FeH or Urdox)   Power-supply 
Identical to BK49B

Was used by Radio/TV-reception etc.
Filament

bk49b_usa_use.png
BK49B: Rider's Vol. 9 page Sparks-Withington 10
Götz Linss † 27.06.21

bk49b_usa_socket.png BK49B: Rider's Vol. 9 page Sparks-Withington 11
Götz Linss † 27.06.21

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Usage in Models 2= 1937 ; 5= 1938 ; 22= 1939? ; 3= 1939 ; 6= 1940? ; 1= 1941?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):39

Collection of

 
bk49b_cover_on.jpg

BK49B
 

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