6J6

Medium-Mu Twin-Triode Amplifier Tube, utilizing a common cathode design to optimize high-frequency push-pull operations. Operating with a 6.3V heater, it serves as a high-efficiency localized oscillator, mixer, or RF pre-amplifier in VHF television tuners and FM radio front-ends, housed in a standard 7-pin miniature glass envelope (T-5.5 bulb).