Antique radios, Old Time Radios

6SK7

ID = 2717

Country:

United States of America (USA)

Brand:	Common type USA tube/semicond. Common type USA tube/semicond. Adzam (tubes made by MBLE, Belgium) Hytron; Salem (MA)
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: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse Anonymous 10 Collector
6SK7: RCA Reference Book 1968 Anonymous 10 Collector More ...	Just Qvigstad	6SK7: Original data sheet Otto Galli More ...

Usage in Models

5= 1938? ; 10= 1938 ; 15= 1939?? ; 128= 1939? ; 325= 1939 ; 61= 1940?? ; 229= 1940? ; 472= 1940 ; 75= 1941?? ; 114= 1941? ; 377= 1941 ; 78= 1942?? ; 89= 1942? ; 74= 1942 ; 1= 1943?? ; 4= 1943? ; 5= 1943 ; 7= 1944 ; 18= 1945?? ; 8= 1945? ; 20= 1945 ; 42= 1946?? ; 65= 1946? ; 216= 1946 ; 53= 1947?? ; 49= 1947? ; 141= 1947 ; 40= 1948?? ; 36= 1948? ; 159= 1948 ; 44= 1949?? ; 39= 1949? ; 76= 1949 ; 166= 1950?? ; 57= 1950? ; 71= 1950 ; 35= 1951?? ; 47= 1951? ; 30= 1951 ; 21= 1952?? ; 25= 1952? ; 8= 1952 ; 3= 1953?? ; 12= 1953? ; 6= 1953 ; 9= 1954?? ; 7= 1954? ; 18= 1954 ; 15= 1955?? ; 4= 1955? ; 15= 1955 ; 1= 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):3645

Collection of

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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6SK7

Common type USA tube/semicond.

Collection of

Variants