@DimBulb, WGN-TV was never a CBS station. It started out Dumont in the late 1940's, then was independent, then was WB, and now is independent again. Now that it's digital on RF ch 19, 9.1 (1080i) is independent, 9.2 (480i) is antenna-tv and on 1 Nov 2013 this-tv moved from 26.5 to 9.3 (480i). BTW, WGN-AM720 was a mutual radio stn many years ago.