A radio tuner is a device that allows users to select and listen to different radio stations. It works by tuning into specific frequencies, which are assigned to various stations broadcasting music, news, or talk shows. Tuners can be found in standalone radios, car audio systems, and even in smartphones. There are two main types of radio tuners: analog and digital. Analog tuners use a dial to manually adjust the frequency, while digital tuners display station information on a screen and can often store favorite stations. Both types help users enjoy a wide range of audio content from the airwaves.