Analysis of information sources in references of the Wikipedia article "Glossary of broadcasting terms" in English language version.
An unlicensed FM station (often run by an amateur radio operator) that manages to occupy a commercial or state-run FM band is an example of a pirate or "bootleg" radio station
An unlicensed FM station (often run by an amateur radio operator) that manages to occupy a commercial or state-run FM band is an example of a pirate or "bootleg" radio station