WISN and other channels will be switching frequencies on October 18th; so if you use an antenna you will have to rescan your TV tuner on that day. Cable and Satellite users will not have to do anything. More information is here:
https://www.wisn.com/article/wisn-rescan-your-tv/28689698
And you can get more information here on the TV Answers website:
https://www.tvanswers.org
https://www.wisn.com/article/wisn-rescan-your-tv/28689698
And you can get more information here on the TV Answers website:
https://www.tvanswers.org