I get WSAU in Northern Michigan during CH. and sometimes Nights. As I recall, there's a lot of programming overlap with WKRC, and that has a great signal Day and Night despite being 1 kW. WGR is often heard Day and sometimes Night.
Before Jesse Champion left as my English teacher in Michigan in late 1969, and went to Taft's WBRC, soon WERC Birmingham, to do News, we discussed the other Taft stations, and I really impressed him with my radio knowledge, telling him how I could get both WGR 550 and WKRC 550 in Genesee County in the Daytime just by rotating my SuperSensitive Sony portable with TRF stage. Those conversations worked wonders for the PTA Conference!
I was amazed at WKRC's signal on the Tustin SDR one night last week. WKRC and WTVN both were blasting in.
