Just past 10:00 AM CDT today, August 21st, WGEM-TV in Quincy, Illinois shut off transmissions on VHF channel 10.
(Signal graph times are EDT.)
At about 12:30 AM CDT, it appears WGEM-TV’s signal on UHF channel 19 was activated, as evidenced by my loss of reception of KPTN-LD at that time (and a huge jump in signal strength on channel 19 at the exact same time on another logger located near Quincy in Payson, IL).
These results suggest that reception of either KPTN-LD or WGEM-TV will be difficult at my location going forward, unless conditions are such that either signal rises significantly above the noise threshold.
Looks like you’re not alone. Our apartment come for retirees uses a “super antennae” but cannot receive channel 10.1-10.4. Rescans, clearing previous scans and rescan aren’t of any avail. Day 3…