Antique radios, Old Time Radios

12K7

Country:	United States of America (USA)		Brand:	Common type USA
			Tube type:	Vacuum Pentode Controlling (mu)

Tube ID = 2820


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Identical to	12K7
Similar Tubes	Other characteristic (electr. data): 12NK7
Successor Tubes	12NK7 12NK7GT

Base	Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uf)
Filament
Description	There is no metal tube 12K7, see under 12K7G or 12K7GT Text in other languages (may differ)
Literature	Taschenbuch zum Röhren-Codex 1948/49


	Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse Karel De Reus

Telefunken Werkstattbuch
Wolfgang Bauer

Usage in Models (calculation each 25th of the month)	6= 1939?? ; 3= 1939? ; 12= 1939 ; 1= 1940?? ; 4= 1940? ; 5= 1940 ; 1= 1941?? ; 2= 1941? ; 1= 1941 ; 1= 1942? ; 1= 1943?? ; 3= 1945? ; 1= 1946? ; 1= 1946 ; 1= 1947?? ; 3= 1947 ; 1= 1948 ; 1= 1949?? ; 1= 1949? ; 1= 1949 ; 1= 1950? ; 2= 1953 ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 53

No further Information for

12K7

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