From their web site:
“WQLN TV will experience an outage from Monday, September 30 through Tuesday, October 1, while we replace our antenna. After the installation is complete and if you watch WQLN using an antenna, you will need to rescan your TV to continue to receive our signal”
You do not need to rescan. We have to re program the head end equipment to the new frequency, the channel location on YTV will not change.