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12J7

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ID = 9586
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Vacuum Pentode 
Identical to 12J7

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uf)
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect / Specified voltage AND current AC/DC
Description There is no metal tube 12J7, see under 12J7G or 12J7GT 
Text in other languages (may differ)
Information source Taschenbuch zum Röhren-Codex 1948/49   

12j7.png
12J7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †

374_6.png 12J7: Telefunken Werkstattbuch
Wolfgang Bauer

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Just Qvigstad
Usage in Models 1= 1939 ; 1= 1941 ; 1= 1944?? ; 1= 1946? ; 1= 1951?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):5
 

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