[Dave Loudin]

If the MANT is delivering the UHF reception you need (meaning you get reliable reception of all the channels you want), do not replace it. Although other antennas have higher gain, no single antenna will give you the total performance you've achieved now. Replace the MANT and you now need to mount at the top of the tower with a rotor or use two antennas - and you won't do much more than fix WYTV and catch a couple Pittsburgh stations. Again, I base this part of my advice on thinking you see the Youngstown stations reliably. If that's not the case, then I'd fall back to the 4221/HBU33 combination.

For the bow-tie/MANT operation: mount the bow-tie, use a balun to connect it to coax cable, and run a short piece to the VHF-in port of the USVJ. Run a short piece of coax from the MANT to the UHF-in port of the USVJ. Run a single coax line down from the USVJ to your TV. Try it without pre-amp, and if the cable loss is too much, then add a pre-amp. (USVJ is an inexpensive specialized combiner - search at SolidSignal.com or other sites)

One thing you DEFINITELY don't want to do is combine the MANT with another UHF antenna. You will end up with worse results. Also, a 4221 or any other antenna we have been talking about pointed at 330 will not get much from Youngstown. These antennas are very insensitive at 90 degrees from the main direction.