Radio communications involve the transmission of information through electromagnetic waves. This technology allows for the sending and receiving of messages over long distances without the need for physical connections. Common applications include AM and FM radio broadcasting, as well as two-way radios used in various industries. The basic components of radio communication include a transmitter, which converts information into radio waves, and a receiver, which captures these waves and converts them back into usable information. This system is essential for various services, including emergency communications, aviation, and maritime operations.