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5661

Information - Help 
ID = 20817
       
 
   
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to 5661
Similar Tubes
Other class quality (otherwise equal):
  12SK7
Heater different:
  6137 ; 6SK7
First Source (s)
15.Nov.1947 : Electron Tube Registration List 616

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect
Description

Ruggedized low-microphonics 12SK7 capable of withstand severe vibrations and intermittent use.

 
Literature Röhren-Taschen-Tabelle, (Franzis RTT)   
- - Manufacturers Literature   
 
5661.jpeg
5661: Photo of tube from my collection - TS
Tomasz Szczesniak

 
oc65_g_3.gif
5661: RTT Schwandt
Günther Stabe

 
56605661babanidoc.png
5661: Babani 1951-1954
Patrice Zeissloff



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