WKOA signed on the air as WASK-FM in 1964 featuring a Beautiful music or easy listening format.

It became known as "Indiana Country FM 105" utilizing Bill Robinson's "Music Works" automated radio programming service.

Former air personalities on K 105 include Ellen K., later known for her work with Rick Dees on KIIS Los Angeles, and Dean McNeil who became the program director of US-99 (WUSN) Chicago.

On March 17, 2008 K105 and sister station WASK 98.7 formed a partnership with WLFI TV 18 to provide news content.

The station also features live and local DJs 24 hours a day with the exception of weekend specialty programming.