That would likely be WHSR licensed to Owosso which is a Strong Tower radio affiliate you were recieving. I once tuned to 88.7 in Flint on I-475 and my radio going through downtown Flint was flipping back and forth between 89X and WHSR quite rapidly. Solid WHSR on I-75 north of I-475
I listened to WHSR a couple times and the audio quality is cringeable at best. Very heavy digital compression especially if they play music. I'm sure they have probably lost a listener or two just because it sounds bad