WBBM – branded Newsradio 780 WBBM – is a commercial all-news AM radio station licensed to serve Chicago, Illinois. Owned by Audacy, Inc., its studios are located at Two Prudential Plaza in the Chicago Loop, while the station transmitter—diplexed with sister station WSCR—resides in the nearby suburb of Bloomingdale.

The Westinghouse Broadcasting Company, also known as Group W, was the broadcasting division of Westinghouse Electric Corporation. It owned several radio and television stations across the United States and distributed television shows for syndication.