Medium-Mu Triode - Sharp-Cutoff Pentode
Miniature type used as combined oscillator and mixer
tube in color and black-and-white television receivers
utilizing an intermediate frequency in the order of 40
MHz. When used in an AM/FM receiver, the triode is used
as an oscillator for both sections. In the AM section,
the pentode is used as a high-gain pentode mixer; in the
FM section, the pentode is used either as a pentode
mixer or as a triode-connected mixer depending on
signal-to-noise considerations. Requires a miniature
9-contact socket. Except for interelectrode
capacirtances, this type is identical to 6X8.
Electrical Data:
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.45 A
Preferred Substitutes ......................... 6FG7 6LJ8
Substitutes .......... 6AT8 6BE8 6BR8 6CL8 6FV8 6JN8 6BM8