Mike Elliott is named PD of Clear Channel's News/Talk WTVN and WYTS Columbus, OH ... WLUM "FM 102.1" Milwaukee taps Stephen Kallao as APD/afternoons, replacing Chris Calef, who's returning to school ... XHTZ "Z90.3" San Diego ups mixer D-Rock to afternoons. He replaces Bill Blast ... KRCK Palm Springs is the latest addition for Clear Channel's syndicated daily "On the Air" with Ryan Seacrest. He'll cover the 2-5 pm slot starting Monday, July 7. In other news at that station, middayer, Ariene Stroschein adds MD chores ... Cara Carriveau is the new midday lady at Bonneville's WTMX "Mix 101.9" Chicago. She was doing part-time at the station ... Former News/Talk WSB (750) Atlanta personality David Paul resurfaces at FM Talker WTKS (104.1) Orlando.