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53

Information - Help 
ID = 2971
       
Country:
United States of America (USA)
Brand:
Tube type:  Double Triode   Power/Output 
Identical to 53 = CV2535 = NU-53
Similar Tubes
Normally replaceable-slightly different:
  38053
Heater different:
  6A6
Other base and other heater:
  6N7G
Multiple differences or of other kind:
  5608A
First year 1933 Radios von gestern, 2. Auflage
First Source (s)
Dec.1932 : -- Collector info (Sammler)
Successor Tubes 6A6  

Base 7-Pin-Base U7B = medium, old, USA (Codex=M)
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 2 Ampere / Indirect / Parallel, (AC/DC)
Description Siehe auch: Zero-Bias- und Triple-Twin- Röhren 
Tube prices 1 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
  53pp_1.png
  53: RCA Manual
Jacob Roschy
 
us_champion_53.jpg
53: TreLe
Trev Levick

 
479_3.png
53: Telefunken Werkstattbuch
Wolfgang Bauer

 
53_techdat01.png
53: Sylvania Technical Manual
Peter Hoddow


Usage in Models 1= 1932 ; 1= 1933?? ; 6= 1933? ; 22= 1933 ; 1= 1934?? ; 8= 1934? ; 20= 1934 ; 4= 1935?? ; 1= 1935? ; 21= 1935 ; 1= 1936?? ; 4= 1936? ; 5= 1936 ; 1= 1937?? ; 2= 1937 ; 1= 1941?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):99



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