Why can't I pickup WCHS TV with an outside antenna?

[RADIOHEAD 1]

I live in Ashland near Central Park. I replaced my outside antenna with next larger size and ran new rg-62 coax..50ft run from the antenna to the TV..I also replaced the matching transformer on the antenna..When I rescanned the channels...I got all the locals and WPBO in Portsmouth... except for WCHS and WPBY.
The signal strenght on WVAH was 100%..according the FCC website they're both on the same tower...
I know WCHS is Channel 41 and WVAH 19 but the data shows Ashland well within the 41db contour...Both are showing 475 kw erp...

Why would the station not show up in the scan..

[the jive talkin one]

I live in Ashland near Central Park. I replaced my outside antenna with next larger size and ran new rg-62 coax..50ft run from the antenna to the TV..I also replaced the matching transformer on the antenna..When I rescanned the channels...I got all the locals and WPBO in Portsmouth... except for WCHS and WPBY.
The signal strenght on WVAH was 100%..according the FCC website they're both on the same tower...
I know WCHS is Channel 41 and WVAH 19 but the data shows Ashland well within the 41db contour...Both are showing 475 kw erp...

Why would the station not show up in the scan..

I am also baffled by this. Sometimes when our antenna is rotated to get WVAH perfectly, it won't get a decent signal on WCHS...and vice versa. And apparently, WPBY's signal is so weak they can't get past Barboursville (we're in Kenova).