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WWMK logo (new).png
City of license Belleville, Illinois
Broadcast area Greater St. Louis
Branding Radio Disney AM 1260
Slogan Your Music Your Way
Frequency 1260 kHz (also on HD Radio)
First air date 1947 (as WIBV)
Format Children's radio
Power 20,000 watts day
5,000 watts night
Class B
Facility ID 4622
Transmitter coordinates 38°27′31.00″N 89°57′41.00″W / 38.4586111°N 89.9613889°W / 38.4586111; -89.9613889Coordinates: 38°27′31.00″N 89°57′41.00″W / 38.4586111°N 89.9613889°W / 38.4586111; -89.9613889
Callsign meaning St. Louis
DZ = Disney
Former callsigns WIBV (1947-1998)
Affiliations Radio Disney
Owner ABC, Inc. (Disney)
(Radio Disney Group, LLC)

WSDZ (1260 AM) is a radio station broadcasting a Children's radio format. Licensed to Belleville, Illinois, the station serves the Greater St. Louis area. The station is currently owned by The Walt Disney Company, and features programing from Radio Disney.

WSDZ along with KMOX are responsible for activation of the St. Louis area Emergency Alert System.[1]


The station began in 1947 as WIBV ("Belleville's Voice"). WIBV aired various types of music, and broadcasting a variety of high school sports into the Metro-East area for many years, until the mid-1990s, when it became an all-news/talk station, a fore-runner of KTRS.

WIBV became WSDZ, when it transferred all of its programming over to KSD-AM, which became KTRS in early-1997. Since then, it has been the Radio Disney affiliate for the Greater St. Louis metropolitan area.


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