Radio-Info hears from a source in Las Vegas that KXNT-AM “NewsRadio” (840) PD Jack Landreth has been let go. Cat Thomas will help run the station for CBS Radio market manager Dave McDonald for the time being … In a surprise move, Sacramento, California talker KERN-AM (1180) mid-morning talk host Inga Barks has resigned to spend more time with her family. The syndicated Michael Savage will take her place … Pittsburgh’s KDKA-AM (1020) cuts loose news reporter Maria Leaf, over what is being called a “restructuring of the station’s news coverage” … Longtime KOST-FM (103.5) morning host Kim Amidon is returning to L.A. radio, filling in for Brian McKnight all next week on KTWV-FM (94.7), says the Orange County Register … Former KNX-AM (1070) Los Angeles reporter Andrew Mollenbeck heads east to Washington, DC’s WTOP-FM (103.5) to anchor morning drive news … New York City’s WBLS (107.5) is now on HD Radio, simulcasting its main signal on the HD-1 channel and offering the black gospel programming of its AM sister WLIB (1190) on HD-2 – Discuss it.