6SQ7 Vacuum Tube – Diode-Triode Detector & AVC Tube for AC Table Radios

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The 6SQ7 is a duplex-diode high-mu triode combining a detector/AVC rectifier and a first-audio gain stage in one envelope — a staple of AC-powered table radios. Tube type: Duplex-d iode triode Base: Octal 8-pin Heater: 6.3V AC, 0.3A Typical use: Detector, AVC, and first-audio stage in AC-powered table and console radios AC-filament counterpart to the transformerless-radio 12SQ7. Show more