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ID = 4609
Tube type:  Damper, booster, flyback diode 
Identical to 6AX4GTA
Similar Tubes
Different maximum ratings:
  6AX4GT ; 6AX4GTB
Heater different:
First Source (s)
16.Feb.1969 : Electron Tube Registration List 2387
Predecessor Tubes 6AX4GT  
Successor Tubes 6AX4GTB  

Base Octal (Int.Octal, IO) K8A, USA 1935
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 1.2 Ampere / Indirect / Specified voltage AC/DC

Similar to 6AX4GT, DC current incresed to 165mA, peak current to 1A.

Information source Essential Characteristics, GE 1973   

6ax4gta_so.png 6AX4GTA: ARRL Handbook 1972
Anonymous 10 Collector

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Just Qvigstad
6AX4GTA: Lorenz Empfänger-Röhren , 9. Auflage
Anonymous 54 Collector

Usage in Models 24= 1955 ; 4= 1956? ; 59= 1956 ; 43= 1957?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):130


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