Radio networks are systems that transmit audio content, such as music, news, and talk shows, over the airwaves. These networks consist of multiple radio stations that share programming and resources, allowing them to reach a wider audience. They operate on various frequencies and can be accessed through traditional AM and FM radios, as well as digital platforms. The main components of a radio network include transmitters, receivers, and broadcasting studios. Transmitters send signals over long distances, while receivers pick up these signals for listeners. Radio networks can be local, regional, or national, providing diverse content tailored to different audiences.