WGNJ 89.3 FM (serving east-central Illinois & west-central Indiana) --- WGNN 102.5 FM (serving most all of east-central Illinois) --- WGNN 103.9 FM (serving Champaign/ Urbana & surrounding towns) --- WGNN 97.1 FM (serving Clinton, Illinois & surrounding towns)
Source:
http://www.greatnewsradio.org/?p=3084