AM/FM radios are devices that receive audio signals transmitted over the airwaves. They operate on two main frequency bands: AM (Amplitude Modulation) and FM (Frequency Modulation). AM radios are known for their long-range capabilities, making them ideal for talk shows and news broadcasts, while FM radios provide better sound quality, making them popular for music. These radios can be found in various forms, including portable units, car radios, and built-in systems in homes. They allow users to tune into different radio stations to enjoy a wide range of programming, from music to news and talk shows.