I've seen much worse reports.
You have a bunch of thranslators on the Jackson, MN tower at magnetic 20 degrees.
Rabbitears.info will give you the breakdown as to what networks they are
http://www.rabbitears.info/search.ph...ive+Television
Also see
http://www.ctv.coop/index.php?page=2
Scroll down to see the Jackson tower.
I would think that an Antennas Direct DB4E would serve you well. Aim it at about 30 degrees magnetic to start with.
https://www.antennasdirect.com/store...v-antenna.html
You can also add their hi-vhf add-on kit if cbs on 12 is spotty.
Other, wiser members may have different solutions.