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6SQ7-M

Information - Help 
ID = 31687
       
Country:
United States of America (USA)
Brand: RCA (RCA Victor Co. Inc.); New York (NY)
Tube type:  Double Diode-Triode   Audio Frequency 
Identical to 6SQ7-M
Similar Tubes
Other shape (e.g. bulb type):
  6SQ7

Base Octal (Int.Octal, IO) K8A, USA 1935
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Parallel / series AC/DC
Description In the 1970's RCA had octal base tubes produced in Brazil by Indostria Brasiliera. These tubes were actually miniature tubes 6AV6 connected in a octal base with a metal cover. 
Literature -- Collector info (Sammler)   
 
rca6sq7m.jpg
6SQ7-M
John Albion

 
6sq7m_so.png
6SQ7-M: ARRL Handbook 1972
Michael Schlör

 


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