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55

Information - Help 
ID = 2972
       
Country:
United States of America (USA)
Brand:
Tube type:  Double Diode-Triode   Audio Frequency 
Identical to 55 = UZ-55 = A255 = CV2537 = PH55 = 255 = NU-55 = ER55
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)
Filament Vf 2.5 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Tube prices 1 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
  55.png
  55: Internet
Miguel Angel Trujillo-Rodriguez
 
55~~1.jpg
55: 1931
Tor Steinnes
 
461_1.png
55: Telefunken Werkstattbuch
Wolfgang Bauer
 
55_techdat01.png
55: Sylvania Technical Manual
Peter Hoddow
Usage in Models 8= 1932?? ; 35= 1932? ; 186= 1932 ; 22= 1933?? ; 18= 1933? ; 180= 1933 ; 8= 1934?? ; 23= 1934? ; 63= 1934 ; 6= 1935?? ; 10= 1935? ; 21= 1935 ; 2= 1936?? ; 4= 1936? ; 6= 1936 ; 2= 1937 ; 1= 1938?? ; 1= 1940?? ; 2= 1941? ; 1= 1942? ; 1= 1942 ; 2= 1945? ; 1= 1947?? ; 1= 1948?? ; 1= 1962? ; 1= 9999?
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):606
Collection of Tor Steinnes (N)
Collection of Benedetto Pirani (I)
Collection of Christian Schaufelberger (CH)
Collection of Klaus Rüdiger (D)
Collection of Antonio Marra (I)
Collection of Aldo Patriarca (CH)
Collection of George Papaiz (CDN)
Collection of Patrice Zeissloff (F)
Collection of Jean-Jacques Pontigny (F)
Collection of Trev Levick (D)
Collection of Ottmar Rollmann (D)
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