High Quality Content by WIKIPEDIA articles! WCFS-FM (105.9 FM), known on-air as "WBBM Newsradio 780 & 105.9", is a radio station licensed to Elmwood Park, Illinois and serving the Chicago, Illinois market. Owned and operated by CBS Radio, WCFS has simulcast the all-news format of sister station WBBM (AM) since August 1, 2011, and also airs an adult contemporary music format on its HD radio subchannel.