WCSI (1010 AM) is a commercial radio station licensed to Columbus, Indiana, United States. Owned by White River Broadcasting Co., Inc., it carries a talk radio format, with studios and offices located on Washington Street in Columbus, near National Road.
WCSI is also heard over low-power FM translator W251CK at 98.1 MHz.
In 1950, WCSI signed on the air. It was originally a daytimer, powered at 250 watts and required to go off the air at sunset. It was owned by Syndicate Theaters, Inc. Its offices and studios were on Third Street in Columbus.
An FM station was added in 1958, WCSI-FM (now WKKG). Originally WCSI-FM simulcast the AM station's full service adult contemporary format. But in the 1970s, it switched to country music.
John Foster hosts WCSI's local morning show; the remainder of the schedule is made up of nationally syndicated conservative talk shows.