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85

Information - Help 
ID = 3000
       
Country:
United States of America (USA)
Brand:
Tube type:  Double Diode-Triode   Audio Frequency 
Identical to 85 = 285 = CV2549 = PH85 = NU-85
Similar Tubes
Other shape (e.g. bulb type):
  G-85-S
Normally replaceable-slightly different:
  38085 ; 85AS
Other class quality (otherwise equal):
  NU-85AS
Heater different:
  55
Other base:
  6C7 ; 6V7G ; 85M ; 85_Coronet
First Source (s)
1933 : The AWA Journal Vol. #7
Sep.1932 : -- Collector info (Sammler)
Predecessor Tubes 55  
Successor Tubes 6V7G   6R7G   6R7GT   6R7  

Base 6-Pin-Base U6A, old, USA (Codex=Ka) Top contact with a cap
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Parallel / series AC/DC
Description

* RMA/JEDEC register record available by courtesy of TCA* - This tube was already listed by several manufacturers when RMA started its standardization in 1934. In order to characterize popular receiving types, manufacturers were asked to supply average characteristics as measured on production lots. Here are the filled answer forms supplied by Radio Valve Co., Raytheon, Sparton, Triad, Tung Sol, Ken Rad, Hytron and Arcturus. Full record is downloadable here.

 
Dimensions (WHD)
incl. pins / tip
x 115 x 37 mm / x 4.53 x 1.46 inch
Tube prices 2 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
  85_schaltbild.png
  85: Sylvania Technical Manual
Peter Hoddow
 
85_purotron_1.jpg
85: Eigene Sammlung
Aldo Patriarca

 
461_5.png
85: Telefunken Werkstattbuch
Wolfgang Bauer

 
85_techdat01.png
85: Sylvania Technical Manual
Peter Hoddow


Usage in Models 2= 1932?? ; 5= 1932? ; 29= 1932 ; 8= 1933?? ; 26= 1933? ; 44= 1933 ; 10= 1934?? ; 14= 1934? ; 85= 1934 ; 17= 1935?? ; 14= 1935? ; 97= 1935 ; 7= 1936?? ; 4= 1936? ; 59= 1936 ; 16= 1937?? ; 2= 1937? ; 21= 1937 ; 6= 1938?? ; 1= 1938? ; 10= 1938 ; 2= 1939?? ; 2= 1939? ; 4= 1939 ; 3= 1940?? ; 1= 1940? ; 1= 1940 ; 1= 1941?? ; 1= 1942? ; 2= 1942 ; 1= 1949??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):495


Documents about this component
  RMA qualification record for tube types 76, 77, 78, 6C6, 6D6, 75, 41, 42, 2A5, 85, 6F7, 80, 84 and 6A7. 1569 KB

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