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6SQ7GT

Information - Help 
ID = 2988
       
Country:
United States of America (USA)
Brand:
Developer: Hytron; Salem (MA) 
Tube type:  Double Diode-Triode   Audio Frequency 
Identical to 6SQ7GT = 6G2 = GT6SQ7 = CV1991 = 6SQ7GT/G
Similar Tubes
Other shape (e.g. bulb type):
  6SQ7 ; 6SQ7G ; 6SQ7_DDR
Normally replaceable-slightly different:
  6H6P ; 6SQ7GTY ; PBC3
Heater different:
  12SQ7GT
Different connections:
  6B6 ; 6B6G
Other base:
  6B6M ; 7B6
Other base and other heater:
  2A6
Multiple differences or of other kind:
  6Z-DH3A
First Source (s)
04.May.1939 : Electron Tube Registration List
Predecessor Tubes 6Q7G   6Q7GT   6B6   6Z-DH3A   6Z-DH3  
Successor Tubes 6AV6  
Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Vk)
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   
 
6sq7gt_15.jpg
6SQ7GT: aus eigener Sammlung
Peter Roggenhofer † 25.4.18
More ...
 
oc85_g.gif
6SQ7GT: RTT Schwandt
Günther Stabe † 19.8.20
More ...
 
6sq7gt_techdat01.png
6SQ7GT: Sylvania Technical Manual
Peter Hoddow
More ...

from Just Qvigstad
Usage in Models 28= 1939? ; 33= 1939 ; 12= 1940?? ; 52= 1940? ; 89= 1940 ; 24= 1941?? ; 9= 1941? ; 65= 1941 ; 27= 1942?? ; 40= 1942? ; 24= 1942 ; 1= 1943?? ; 2= 1943 ; 2= 1944?? ; 1= 1944? ; 2= 1945?? ; 1= 1945? ; 5= 1945 ; 14= 1946?? ; 19= 1946? ; 65= 1946 ; 28= 1947?? ; 9= 1947? ; 110= 1947 ; 20= 1948?? ; 15= 1948? ; 92= 1948 ; 13= 1949?? ; 31= 1949? ; 81= 1949 ; 21= 1950?? ; 20= 1950? ; 31= 1950 ; 10= 1951?? ; 3= 1951? ; 17= 1951 ; 8= 1952?? ; 16= 1952? ; 15= 1952 ; 6= 1953?? ; 1= 1953? ; 6= 1953 ; 3= 1954?? ; 1= 1954? ; 1= 1955?? ; 3= 1955 ; 2= 1956? ; 8= 1956 ; 1= 1957?? ; 6= 1957 ; 13= 1958 ; 3= 1960?? ; 1= 1960 ; 1= 1962?? ; 1= 1968??
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1112
Collection of Jacob Roschy (D)
Collection of Martin Steyer (D)
Collection of Christian Schaufelberger (CH)
Collection of Otto Frosinn (D)
Collection of Karlheinz Fischer (D)
Collection of Siegfried Droese (D)
Collection of Aldo Patriarca (CH)
Collection of Giorgio Busletta (I)
Collection of Emilio Ciardiello (I)
Collection of Georges Werts (B)
Collection of Peter Roggenhofer † 25.4.18 (A)
Collection of a member from FIN
Collection of Tomasz Szczesniak (PL)
Collection of Hannu Alho (FIN)
Collection of Antonio Varrica (I)
Collection of Stig Comstedt (S)
Collection of Manuel Martinez (E)
Collection of George Papaiz (CDN)
Collection of Alberto Ammendola (I)
Collection of Piero Iatteri (I)
Collection of Bruce Morgenstern (CDN)
Collection of Fin Stewart (AUS)
Collection of Michael Gnaedig-Fischer (MEX)
Collection of Antonio Rabitti (BR)
Collection of Aires Gomes (P)
Collection of Marcello Astolfi (I)
Collection of Jose Luis Villabona Horreo (E)
Collection of David Erali (USA)
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