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3A8GT

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ID = 4282
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Diode-Triode-Pentode   RF/IF-Stage 
Identical to 3A8GT = VT-149 = 3A8

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uw)
Filament Vf 2.8 Volts / If 0.1 Ampere / Direct / Battery =
Description Glass octal type used as combined detector, af amplifier, and rf amplifier. The 3A8GT is used for battery-operated receivers with either 1.4 (parallel) or 2.8 (series) volt dc filament supplies. Typical operation of triode unit as class A amplifier. Some schematics name it in short 3A8. Therefore we have to list the 3A8 too. 
Text in other languages (may differ)
Tube prices 4 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

3a8gt_sockel.png 3A8GT: Sylvania Technical Manual
Peter Hoddow

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Just Qvigstad
3a8gt_techdat01.png
3A8GT: Sylvania Technical Manual
Peter Hoddow

Usage in Models 2= 1939 ; 1= 1940?? ; 4= 1940? ; 1= 1940 ; 2= 1941?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):10

Collection of

 
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3A8GT
 

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