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12SY7GT

Information - Help 
ID = 5450
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Raytheon Mfg. Co.; Cambridge, MA 
Tube type:  Pentagrid-Converter (Heptode)   Frequency converter 
Identical to 12SY7GT
Similar Tubes
Other shape (e.g. bulb type):
  12SY7
Different maximum ratings:
  12SA7GT
First Source (s)
25.Sep.1945 : Electron Tube Registration List rec. 438

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Udo)
Was used by Radio/TV-reception etc.
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect / Parallel / series AC/DC
Description

Selected for operation at 26,5 V

 
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
 
12sy7gt_so.png
12SY7GT: ARRL Handbook 1972
Michael Schlör

 

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