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 One (New Zealand)
In the station's early years, its 100 Watt transmitter was located on the top of the campus's tallest building (the 11-storey Richardson Building, then known as the Hocken Building), but since the late 1980s it has had a transmitter on the top of Mount Cargill, 12 kilometres north of the campus. This gives the station a range which covers much of coastal Otago, from Oamaru to past Balclutha.