I get my TV over the air, and when propagation conditions are good - ie sunny day, no cloud front between here and Buffalo, we watch BBBZ, which comes in OTA on VHF7.
It is a lowish budget station with 1 hi def, and 7 SD sub channels.
The fun part is sometimes seeing the same low budget ad for testosterone or something else running two times in a row.
The annoying thing with the sub channels is that the ad breaks are sometimes 2.5 minutes or longer.
The good thing is that it gets you up off the couch to do little things around the house.
Run the dish washer, flip laundry washer to dryer, etc.