Electronic device used to receive electromagnetic transmissions in the form of electromagnetic waves and decode from those signals useable audio or video information that can be reproduced by an audio or video system. Tuners are primarily used for radio reception and television reception. FM tuners decode frequency modulated radio signals to generate audio information. AM tuners decode amplitude modulated radio signals to do the same thing. Television tuners generate video signals that can be displayed by a video display system from cable, satellite or radio style transmissions received with an antenna.