
The station began its life on the 107.3 frequency as WCOR-FM in Lebanon, playing a country music format, on March 31, 1980. It soon branded itself US107 and changed its call sign to WUSW. This station proved to be short-lived; its absentee owner shut it down along with its AM sister, WCOR, in mid-1981. It was sold, moved to Nashville, and had its frequency changed to 107.5 in order to accommodate a power increase (The FCC ruled out a power increase for 107.3 because of its proximity to WQLT-FM in Florence, Alabama, which is also on 107.3).
The station received a complete overhaul when it moved to 107.5 FM in 1982, and went on to become one of Nashville's most successful radio stations. When the move was complete, the callsign was changed to WYHY. Those call letters and the station's nickname (Y107) lasted from 1982 until 1996.
Initially under its new incarnation, Y107 broadcast adult contemporary music. Within a few years, however, Y107 became a Top 40 station, competing with two other similar stations, “Kicks 104” (WWKX-FM) and “96 Kiss” (WZKS). Needing a dose of “attitude”, Y107 hired Coyote McCloud away from WWKX in 1984 and launched a “morning zoo”-type morning show, called “Coyote McCloud and The Zoo Crew”. By 1987 The station became more aggressive and branded itself “Y107, The Outrageous FM”. During this time, the station enjoyed enormous popularity across the board, and was regularly Nashville’s highest-rated radio station.
Source: Wikipedia