WKOS

WGAT-FM began broadcasting on January 21, 1970, as the FM sister station of WGAT AM. It changed calls to WZXY on October 14, 1981, and changed to its current callsign on July 1, 1991. In the early 1980s, WGAT-FM became WZXY, an album-oriented rock station branded "Y105". Sometime in the mid- to late-1980s, WZXY changed its to CHR/Top 40. Through much of the 1990s and a large part of the 2000s, the format was oldies under its new callsign WKOS, and then adult hits. The station was called "The Peak" when it changed to hot adult contemporary.

On February 24, 2012, WKOS changed formats to country, branded as "Great Country 104.9". On July 3, 2013, at 3:00 p.m. EDT, WKOS re-branded itself as "Nash FM 104.9". On April 24, 2015, WKOS rebranded as "104.9 Nash Icon".

In 2007, the East Tennessee State University men's basketball Team moved its games from WJCW to WKOS. This marked the first time the team was heard on FM radio. This has since been moved to AM 640 WXSM, a sister station.

In 1967, the phone hacker Captain Crunch created a radio station called WKOS [W-"chaos"], a pirate station in Dover-Foxcroft, Maine, but had to shut it down when a licensed radio station, WDME, objected.