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6Q7GT 2x diode-triode
6Q7GT 2x diode-triode

6Q7GT 2x diode-triode

Inventory NumberVT0110
ClassificationVacuum Tube
Cultural Region
    Dimensions8.2 × 3.2 × 3.2 cm (3 1/4 × 1 1/4 × 1 1/4 in.)
    DescriptionHAS A REAL BUG IN IT
    This is a dual diode/ high mu triode amplifier with a unipotential cathode and a grid cap mounted on the top of the tube. The tube came in a metal shell (6Q7) or glass bulb (6Q7GT) both with 7 pin (octal base, pin 6 omitted) base.
    Signedunsigned
    Inscribedprinted on glass: 6Q7 / GT / MADE IN U.S.A.
    FunctionRadio
    Sylvania 6H6GT/G twin diode tube
    Sylvania Electric Products, Inc
    Date: 1943-1948
    Object number: VT0116
    triode model
    Cruft Laboratory, Harvard University
    Date: 1928
    Object number: 1998-1-1534
    Raytheon RK3B26 half-wave rectifier tube
    Raytheon Manufacturing Company
    Date: circa 1935
    Object number: VT0100
    Tung-Sol 25Z6GT rectifier/doubler
    Tung-Sol Lamp Works, Inc.
    Object number: VT0109
    RCA 8016 HV HW rectifier
    Radio Corporation of America
    Object number: VT0077
    Micromho dynamic mutual conductance tube tester
    Hickok Electrical Instrument Company
    Date: 1955-1965
    Object number: 1998-1-0879
    Sylvania 25Z6GT/G  high-vacuum rectifier-doubler tube
    Sylvania Products Company
    Date: circa 1943
    Object number: VT0722
    Raytheon Manufacturing Company
    Object number: VT0145
    Sylvania 6SJ7GT sharp cut-off pentode tube
    Sylvania Electric Products, Inc
    Date: 1942-1949
    Object number: VT0119
    anode broken off high-power vacuum tube
    American
    Date: 1900-1930
    Object number: 2008-1-0068
    GE 5718 UHF subminiature triode tube
    General Electric Company
    Date: 1948-1950
    Object number: VT0032
    experimental diode tube
    Cruft Laboratory, Harvard University
    Date: 1929
    Object number: VT0244