Tetsuo Kogawa "Toward Polymorphous Radio"

From Radio Rethink

The term mini-FM was first used in a mass-circulation newspaper in 1982, when a very low-watt FM-station movement started.Mini-FM stations have very little power judged by any standard-usually less than a hundred milliwatts. Although such a weak signal may seem to be of no use for broadcasting, the purpose was not broadcasting but narrowcasting.