Microbroadcasting

Low-power transmitters such as those mentioned above are also sometimes used
for neighborhood or campus radio stations, though campus radio stations are
often run over carrier current. This is generally considered a form of
microbroadcasting. As a general rule, enforcement towards low-power FM
stations is stricter than AM stations due to issues such as the capture
effect, and as a result, FM microbroadcasters generally do not reach as far
as their AM competitors.