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ID = 9475
Brand: Common type Worldwide tube/semicond.
Developer: Triad Television & Mfg. Co.; Pawtucket, RI 
Tube type:  Vacuum Pentode   Universal 
Identical to 6J7MG
Similar Tubes
Other shape (e.g. bulb type):
  6J7 ; 6J7G ; 6J7GT
Heater different:
First Source (s)
08.Jul.1935 : Electron Tube Registration List 34
Predecessor Tubes 77  

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uf)
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC

Glass bulb inside a metal envelope.

Information source Taschenbuch zum Röhren-Codex 1948/49   

374_30.png 6J7MG: Telefunken Werkstattbuch
Wolfgang Bauer

More ...

Just Qvigstad
Usage in Models 1= 1936 ; 1= 1939 ; 1= 1942?? ; 1= 1949

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):4

Collection of



Forum contributions about this tube
Threads: 1 | Posts: 1
Hits: 944     Replies: 0
Curiosité erreur de marquage
Georges Werts

Voir photo en annexe un problème de marquage chez BELVU donne une 67J MG pour un tube identique au 6J7MG.

Georges Werts


End of forum contributions about this tube

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