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6SK7

Information - Help 
ID = 2717
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to 6SK7 = 6К3 = 6К17Б = VT-117 = CV1981
Similar Tubes
Other shape (e.g. bulb type):
  3111_OSW ; 6SK7GT ; 6SK7MG ; GT6SK7 ; OSW3111
Normally replaceable-slightly different:
  6SK7_DDR
Other class quality (otherwise equal):
  6SK7WA ; 6SK7Y
Heater different:
  12SK7 ; 5661
Other base:
  6BD6 ; 7A7
Multiple differences or of other kind:
  6137
First year 1938 -- Collector info (Sammler)
First Source (s)
07.Oct.1938 : Electron Tube Registration List
Predecessor Tubes 6K7G   6K7   6K7GT   6U7G   6K7GM  
Successor Tubes 1946   6BA6   7A7  

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uka)
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC
Tube prices 4 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

6sk7.png
6SK7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Anonymous 10 Collector

6sk7_so.png 6SK7: RCA Reference Book 1968
Anonymous 10 Collector

More ...

Just Qvigstad
6sk7_rca_data_01.png
6SK7: Original data sheet
Otto Galli

More ...
Usage in Models 5= 1938? ; 9= 1938 ; 14= 1939?? ; 127= 1939? ; 324= 1939 ; 60= 1940?? ; 226= 1940? ; 466= 1940 ; 73= 1941?? ; 112= 1941? ; 370= 1941 ; 76= 1942?? ; 88= 1942? ; 75= 1942 ; 1= 1943?? ; 5= 1943? ; 4= 1943 ; 7= 1944 ; 17= 1945?? ; 7= 1945? ; 21= 1945 ; 46= 1946?? ; 61= 1946? ; 213= 1946 ; 52= 1947?? ; 47= 1947? ; 132= 1947 ; 36= 1948?? ; 30= 1948? ; 155= 1948 ; 47= 1949?? ; 39= 1949? ; 73= 1949 ; 144= 1950?? ; 48= 1950? ; 71= 1950 ; 33= 1951?? ; 27= 1951? ; 33= 1951 ; 21= 1952?? ; 17= 1952? ; 8= 1952 ; 3= 1953?? ; 12= 1953? ; 7= 1953 ; 9= 1954?? ; 7= 1954? ; 18= 1954 ; 15= 1955?? ; 3= 1955? ; 15= 1955 ; 2= 1956?? ; 5= 1956? ; 2= 1956 ; 4= 1957? ; 2= 1957 ; 1= 1958?? ; 1= 1958 ; 2= 1959 ; 2= 1965 ; 1= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3531

Collection of

 
6sk7_a.jpg

6SK7
 

Variants

= 6SK7_DDR (Glaskolben auf Bakelitsockel "WF" (DDR))

As oscillator of the signal generators made by Measurements Corporation, we find this special order 6SK7 with extremely low losses porcelain base. Tubes were supplied to Measurements by RCA. The service manuals gave instructions of how to move the porcelain base to a new commercial replacement tube, when the original replacement was not readily available.


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