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12SR7GT

Information - Help 
ID = 5446
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Raytheon Mfg. Co.; Cambridge, MA 
Tube type:  Double Diode-Triode   Audio Frequency 
Identical to 12SR7GT = 12SR7GT/G
Similar Tubes
Other shape (e.g. bulb type):
  12SR7
First Source (s)
21.May.1943 : RMA reg.

Base Octal (Int.Octal, IO) K8A, USA 1935
Was used by Radio/TV-reception etc.
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect / Specified voltage AND current AC/DC
Tube prices 2 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   

oc85_g_4.gif 12SR7GT: RTT Schwandt
Günther Stabe † 19.8.20

More ...

Just Qvigstad
Usage in Models 1= 1946?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of

 
usa_tungsol_12sr7gt_tube.jpg

12SR7GT
 

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