AM radios are devices that receive amplitude modulation (AM) signals, which are a type of radio wave used for broadcasting audio content. They work by varying the strength of the signal to transmit sound, allowing listeners to tune in to various stations. AM radio is commonly used for talk shows, news, and music, especially in rural areas where FM signals may be weaker. One of the key features of AM radios is their ability to cover long distances, making them ideal for reaching audiences far from the transmitter. However, they are more susceptible to interference from electrical devices and atmospheric conditions compared to FM radios.