WTMK began broadcasting in 2005 and was originally licensed to Lowell, Indiana.[3] It aired a Christian format was owned by CSN International.[3] In 2008, CSN International sold WTMK, along with a number of other stations, to Calvary Radio Network, Inc.[4][5] These stations were sold to Calvary Chapel Costa Mesa later that year.[6][7] In 2010, Calvary Radio Network purchased WTMK back from Calvary Chapel Costa Mesa.[8] The station was sold to Olivet Nazarene University later that year for $130,000, and began broadcasting the Christian contemporary music format known as Shine.fm.[9] In 2015, the station was moved from Lowell, Indiana to Wanatah.[10]