FM broadcasting
VHF Radio waves do not travel far beyond the visual horizon, so reception distances for FM stations are usually limited to 30–40 miles (50–65 km) They can also be blocked by hills or buildings.
Radio Saint Helena
Radio Saint Helena (call-sign: "ZHH") was a local radio station serving the South Atlantic island of Saint Helena. Broadcasting on an AM frequency of 1548 kHz (194 m), the station was audible within a range of about 100 km from the island.