WDCB (90.9 MHz) is a non-commercial public FM radio station licensed to Glen Ellyn, Illinois, and serving the Chicago metropolitan area.

[7][2][9][10][8] The station began full-time operations in October 1987, after an agreement was reached for WEPS to move to a new frequency.

[1][10] While jazz remains its focus, WDCB plays a diverse variety of musical genres, including blues, roots rock, bluegrass, Celtic, folk, big band, Afro-Cuban jazz, and world music, along with old-time radio shows.

[11][13][14] WDCB is also the home of Those Were The Days, the long-running old-time radio program that had originally been hosted by Chuck Schaden.

From 2000 to 2022, John Russell Ghrist hosted the Saturday afternoon big band program Midwest Ballroom.

[18][19] Steve Darnall hosts the long running old-time radio program Those Were The Days, which airs Saturday afternoons.

[22][23] Local celebrity Wayne Messmer also hosts a vocal jazz show on Sunday nights.

[11] WDCB's stable of on-air personalities includes Bruce Oscar, Paul Abella, Orbert Davis, Dee Alexander, Bill O'Connell, and Marshall Vente, all of whom are prominent Chicago-based jazz musicians, along with longtime hosts Leslie Keros, Jay Greene, Matthew Hermes, Jeanne Franks, Bob Signorelli, Dona Mullen, Al Carter-Bey, and Andy Schultz.