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ID = 3666
Brand: Tungsram; Budapest (see also British T.)
Tube type:  Triode-Hexode   Frequency converter   Controlling (mu) 
Identical to 6TH8 = TX6 = 6TH8G
Similar Tubes
Heater different:
Other base and other heater:
  ACH1_Tungsram ; TACH1
First Source (s)
Apr.1937 : Histoire de la lampe de radio
Mar.1937 : L'Histoire Singulière du Tube Radio; G. Duperray 2009
Predecessor Tubes 6A8G  
Successor Tubes 6E8G   6E8MG  

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Octal) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.7 Ampere / Indirect / Specified voltage AC/DC

According to the nomenclature, an octal tube 6TH8 without a suffix as -G, -GT, etc. would presume a metal version of this tube, which apparently does not exist, but there are glass tubes stamped as 6TH8 instead as 6TH8G, see also under 6TH8G.

Text in other languages (may differ)
Tube prices 1 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   

6TH8: Internet
Miguel Angel Trujillo-Rodriguez

oc24_1~~16.png 6TH8: RTT 1974 (Franzis) 13. Auflage
Martin Renz

Just Qvigstad
6TH8: Memento Tungsram Vol. 4
Jacob Roschy

More ...
Usage in Models 2= 1937? ; 8= 1937 ; 1= 1938?? ; 1= 1938? ; 18= 1938 ; 2= 1939? ; 7= 1939

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

Collection of



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