WCBU is a listener-supported, non-commercial public radio station owned by Bradley University in Peoria, Illinois. The station is a National Public Radio affiliate and is located on Bradley's campus.

WCBU first signed on in 1970. In 2007, WCBU became the first radio station in Central Illinois to offer a second channel of separate classical programming for listeners with HD Radio receivers.

In April 2019, Illinois State University, owner of Central Illinois' other NPR member, WGLT, and Bradley University signed an agreement in which ISU assumed operations of WCBU starting June 1, 2019. WCBU will continue to run broadcast operations on the Bradley campus and will keep the WCBU call letters and 89.9 FM frequency. ISU will manage WCBU's personnel operations. WGLT's translator signal at 103.5 FM in Peoria, which had simulcast WGLT's signal, will simulcast WCBU-HD2's classical music format.

WCBU, Peoria Public Radio offers a wide variety of news and music programs on both its main and HD channels. Both channels can be heard via a live web streaming.

The station's main channel airs news and information and entertainment programming, including NPR's top news programs, All Things Considered, Morning Edition, Weekend Edition, 1A, Wait Wait... Don't Tell Me! and Here & Now.

Some of the station's local programming:

Classical WCBU HD2 airs a full schedule of classical music. WCBU HD2 can be heard on HD Radio receivers or online.

Some of the station's older, nostalgic, long time listeners consider the period beginning about 1979 and ending about 1986 to be the "Golden Age of WCBU." That period was marked by varying attempts at local programming and productions of varying quality and indeterminate audience appeal.