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55

Information - Help 
ID = 2972
       
Country:
United States of America (USA)
Brand:
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Double Diode-Triode   Audio Frequency 
Identical to 55 = UZ-55 = A255 = CV2537 = PH55 = NU-55 = ER55 = G-55 = 255
Similar Tubes
Other shape (e.g. bulb type):
  55S ; G-55-S
Other class quality (otherwise equal):
  NU-55S
Heater different:
  85
Other base and other heater:
  6C7 ; 6V7G
First year 1931 Radios von gestern, 2. Auflage
First Source (s)
Sep.1932 : -- Collector info (Sammler)
Successor Tubes 85   6C7  

Base 6-Pin-Base U6A, old, USA (Codex=Ka) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC
Description

Grid from top cap.

 
Dimensions (WHD)
incl. pins / tip
x 116 x 38 mm / x 4.57 x 1.50 inch
Weight 34 g / 1.20 oz
Tube prices 1 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren   
Taschenbuch zum Röhren-Codex 1948/49

55.png
55: Internet
Miguel Angel Trujillo-Rodriguez

461_1.png 55: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
55_techdat01.png
55: Sylvania Technical Manual
Peter Hoddow

More ...
Usage in Models 8= 1932?? ; 36= 1932? ; 197= 1932 ; 22= 1933?? ; 23= 1933? ; 198= 1933 ; 8= 1934?? ; 24= 1934? ; 64= 1934 ; 7= 1935?? ; 10= 1935? ; 21= 1935 ; 2= 1936?? ; 4= 1936? ; 6= 1936 ; 1= 1938?? ; 1= 1940?? ; 2= 1941? ; 1= 1942? ; 1= 1942 ; 2= 1945? ; 1= 1947?? ; 1= 1948?? ; 1= 9999?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):641

Collection of

 
55~~1.jpg

55
 

Variants

Röhre von Arcturus mit blauem Glas.


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