A shortwave radio is a type of radio that can receive shortwave radio frequencies. Shortwave frequencies range from 3 kilohertz (kHz) to 30 megahertz (MHz), and they can be used to communicate over long distances.
Shortwave radios are often used by people who live in remote areas or who want to listen to international broadcasts. They can also be used by people who want to listen to specialized programming, such as weather reports or marine broadcasts.