The call sign is shared with sister station WSOY 1340 AM, a reference to Decatur's role in soybean farming.

[5] On weekdays, Y103 carries two nationally syndicated shows during drive time: "Brooke & Jeffrey" from KQMV Seattle in mornings and "On Air with Ryan Seacrest" from KIIS-FM Los Angeles in afternoons.

It later switched to beautiful music, playing quarter hour sweeps of mostly soft instrumental cover versions of popular songs.

[8] In the early 1980s, WSOY-FM adopted a Top 40 format and the name "Y-103" to distinguish itself from its AM partner, though it remained mostly on automation until 2000.

On February 1, 2024, Neuhoff Media sold radio stations in Danville and Decatur IL to Champaign Multimedia Group for $2 million and has since closed in May 2024.