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.
87.5 FM
87.5 FM is the first radio broadcast frequency that can be used on the FM band 87.5-108 or VHF Band 2. The use of 87.5 FM as the main carrier frequency of a legal radio station itself is rare in most countries as it transmits signals slightly out of band down to roughly 87.3 and possibly as low as 87.2 close to the transmitter.