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12SY7

Information - Help 
ID = 5449
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Raytheon Mfg. Co.; Cambridge, MA 
Tube type:  Pentagrid-Converter (Heptode)   Pentagrid (new) 
Identical to 12SY7
Similar Tubes
Other shape (e.g. bulb type):
  12SY7GT
Different maximum ratings:
  12SA7
First Source (s)
25.Sep.1945 : Electron Tube Registration List rec. 438

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Ud)
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

 
Tube prices 2 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
 
12sy7_rcaxcl.jpg
12SY7: Private collection
Emilio Ciardiello

 
oc83_g_2.gif
12SY7: RTT Schwandt
Günther Stabe

 
12sy7_dat.png
12SY7: elektron taschenbuch 1952
Heinz Höger


Usage in Models 1= 1946?? ; 1= 1951?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2


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