 While KTUN was moderately successful in the Humble/Kingwood area, the signal was poor in most parts of Greater Houston during daylight operations, and at night was only listenable in Humble itself.In 1986, FM Christian radio station KGOL, then at 107.3 in Lake Jackson, Texas, was sold and became Classic Rock "Z-107" KZFX on 107.5 FM (now KGLK).As a result, KGOL and its Christian format was moved to AM 1180, shifting the KGOL call sign from 107.3 to 1180 in the process.