WNDZ (750 AM) is a radio station broadcasting a brokered programming (also known as time-buy and blocktime) format licensed to Portage, Indiana, United States and serving the Chicago area.
WNDZ (750 AM) is a radio station broadcasting a brokered programming format. Licensed to Portage, Indiana, United States, it serves the Chicago area. Brokered programming (also known as time-buy and blocktime) is a form of broadcast content in which the show's producer pays a radio or television station for air time, rather than exchanging programming for pay or the opportunity to play spot commercials. 
