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6K7G

Information - Help 
ID = 2700
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Arcturus Radio Tube Co.; Newark, NJ 
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to 6K7G = VT-86A = CV1941 = W63 = ZA5699 = 10E/558
Similar Tubes
Other shape (e.g. bulb type):
  6K7 ; 6K7GT ; 6K7MG ; PF9
Normally replaceable-slightly different:
  6K7EG ; 6K7M ; 88M
Other class quality (otherwise equal):
  W1531
Heater different:
  12K7G
Other base:
  78 ; 78E
First year 1935 -- Collector info (Sammler) Starts 1935 with ca. 10 models - some secure 1935.
First Source (s)
06.Jun.1935 : Electron Tube Registration List
Predecessor Tubes 78  
Successor Tubes 1940   6SK7   6M7G   7A7   6K7GT  

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uf) Top contact with a cap.
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 5 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

6k7~~1.png
6K7G: De Muiderkring, Bussum
Joachim Glüder

374_28~~3.png 6K7G: Telefunken Werkstattbuch
Wolfgang Bauer

More ...

Just Qvigstad
6k7g_rca_data_01.png
6K7G: RCA
Dietrich Grötzer

More ...
Usage in Models 1= 1935? ; 9= 1935 ; 5= 1936?? ; 15= 1936? ; 240= 1936 ; 35= 1937?? ; 22= 1937? ; 470= 1937 ; 25= 1938?? ; 37= 1938? ; 387= 1938 ; 27= 1939?? ; 47= 1939? ; 260= 1939 ; 43= 1940?? ; 30= 1940? ; 133= 1940 ; 8= 1941?? ; 13= 1941? ; 50= 1941 ; 5= 1942?? ; 12= 1942? ; 18= 1942 ; 5= 1943?? ; 4= 1943? ; 7= 1943 ; 2= 1944? ; 12= 1944 ; 10= 1945?? ; 35= 1945? ; 42= 1945 ; 12= 1946?? ; 7= 1946? ; 54= 1946 ; 13= 1947?? ; 8= 1947? ; 44= 1947 ; 15= 1948?? ; 3= 1948? ; 17= 1948 ; 4= 1949?? ; 3= 1949? ; 9= 1949 ; 14= 1950?? ; 2= 1950? ; 6= 1950 ; 6= 1951?? ; 2= 1952 ; 1= 1956?? ; 1= 1956 ; 1= 1958 ; 1= 2020 ; 1= 9999? ; 5= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2238

Collection of

 
6k7g_2_1.jpg

6K7G
 

Variants

Wrong designation the correct name should be 6K7

In the fifties, when the G envelope had been discontinued, Fivre, Marconi and other Italian manufacturers offered as replacement for servicing old radio sets this tubular version, either with a G suffix or with a GT/G suffix. Tubular G or GT/G types were taller than the GT ones, same height of the old domed G, to leave unchanged the seating of the wire going to the top cap of the tube.


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