Tuner may refer to someone or something which adjusts or configures a mechanical, electronic, or musical device Electronic Antenna tuner, a device to adjust the resonance frequency of an antenna or transmission line Tuner (electronics) a module or device which converts low-amplitude radio-frequency signals into a form suitable for processing by further modules or equipment. ASTC tuner, also called an HDTV tuner, allows reception of ATSC digital television Tuner (radio), a part of a radio… (More on Tuner)