NJ7P SQL Tube Database Query

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5CG8
Medium-Mu Triode - Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 9GFEIA Bulb: 6-2

Substitute Data

Preferred Substitutes ......................... 5AT8
Substitutes ................................... 5BE8 5BR8 5CL8 5FG7 5FV8
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
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,

Source ........................................ RCA RC-29 - 1975
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

Source ........................................ RCA RC-29 - 1975
or as a triode-connected mixer depending on signal-to-noise considerations. Requires miniature 9-contact socket. Except for interelectrode capacirtances, this type is identical to 6X8.

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 4.7 V
Heater Current ................................ 0.6 A

Source ........................................ RCA RC-29 - 1975
For other characteristics and typical operation, see 6CG8A

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Mon, 29 Nov 2021 05:07:39 -0700