Hi comcast_hater,
Lovely username, lol. I've dealt with comcast before, didn't much care for them.
I don't have experience building other than a single bay bowtie design out of old coat hangers which met its rusty end last year. If I were in your situation I'd buy an
Antennas Direct DB8e. This antenna is ideal because you have two different pathways your UHF signals are coming from. (aim to 290 and 355 magnetic headings for each panel). This antenna gives you the ability in one product to aim both panels independently of each other. It is here:
https://www.antennasdirect.com/store...V-Antenna.html and
http://www.solidsignal.com/pview.asp?p=db8e.
You have ABC WTNH broadcasting on high-vhf real channel 10. You already receive it with your current antenna. That suggests you won't need to purchase a separate VHF capable antenna for it. There are times people get lucky with UHF antennas and receive VHF signals. Normally in these cases the signals of the VHF broadcasts have to be strong.
I think you'll find with the DB8e FOX, NBC and PBS will be added reliably to your existing channels.
Cheers.