"Johnny Carson" on Antenna TV

When I was in WI I looked into free antenna TV for a bit there. When I got my house there, it had an antenna on the roof. Since I am a fan of Chicago teams, I like the Bears and the Blackhawks, on cable, Time Warner, it wasn't in high def. When I switched over to the antenna from the roof for WGN or WFLD, the picture was incredibly sharper and clearer then anything on cable, even the supposed 'hi-def' stations. Go figure. In other words, the free stuff had a much, much better picture than the cable stuff.