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 y Televisión Martí
Today, Radio Marti broadcasts a 24-hour radio program over short-wave transmitters in Delano, California, and Greenville, North Carolina, and a medium-wave transmitter in Marathon, Florida (GC: ). Its studios are located in Miami, Florida. Cuba jams both the medium-wave and shortwave signals, but the shortwave program is heard in Canada and throughout Central America and South America. On occasion, the medium-wave transmitter at 1180 kHz can be heard as far north as Washington, D.C.