I'm about 40 miles southeast of you in Crystal Lake, IL. WOKY once had a pretty good night signal here. But for the past 2-3 years at least it's been mostly missing. The result here is that WBAA is relatively common here at night. CFRY (Winnipeg area) even more so.Kenosha, WI- At 3:45 PM, broad daylight, in my car (2015 Ford Fusion with a very good radio), I was listening to WOKY 920. As I pulled up curbside waiting for my daughter to get out of school I found myself in an almost complete null of WOKY. Heard something very weak underneath it and thought, "I'll bet this is WBAA." Well, it WAS WBAA, West Lafayette, IN, 5,000 watts ND @ about 160 miles, with NPR programming and 3 positive IDs.
BTW, there was no evidence of any special conditions on the rest of the band.
(OT Alert: I'm overdue for a run up to Keno for a Tenuta's Italian Deli fix!)