6BQ7 / 6BQ7A Vacuum Tube – Cascode Dual Triode for TV Tuner RF Front Ends

The 6BQ7 (6BQ7A) is a dual triode designed for cascode RF amplifier duty, giving low-noise gain at the front end of a tuner circuit.

• Tube type: Dual triode (cascode RF)
• Base: 9-pin miniature
• Heater: 6.3V AC, 0.3A
• Typical use: RF amplifier front end in vintage television tuners

Common service-replacement tube for mid-century TV chassis repair.