prior to switching frequencies, krqu was located at 104.5 fm. the station was assigned the call sign khih on may 2, 2005. on december 29, 2005, the station changed its call sign to kusz, and on march 5, 2008, to krqu. on april 6, 2011, changed its call sign to kaaz. on november 26, 2012, changed its call sign to the current krqu.