WQNU's Diaz Exits: SummitMedia WQNU/Louisville morning co-host Chris Diaz has exited after more than three years with the station. He joined from crosstown Top 40 WNRW in 2012 (CAT 10/9/12). Co-host Jess Tyler remains and will handle the show solo until a replacement is found. OM/PD Shane Collins tells Country Aircheck that the search has already begun. Three-to-five years on-air experience preferred; materials here.