AM radio towers are tall structures used to broadcast AM radio signals over long distances. They work by transmitting audio signals as amplitude modulated waves, which can be picked up by AM radios in homes and vehicles. These towers are often located in open areas to maximize their reach and are typically made of metal. The height of an AM radio tower can vary, but many are over 100 feet tall. The towers are usually supported by guy wires and are designed to withstand various weather conditions. They play a crucial role in delivering news, music, and other programming to listeners across vast areas.