You will need a pre amp to get the UHF signals in red on your report. If you were in an open area with few or no trees or hills then you'd probably see a signal from CH. 22.
Since the UHF signals in your area would be considered fringe, I'd recommend that you purchase a
http://www.solidsignal.com/pview.asp...u=615798100155
I can't get my weakest UHF signals either with this antenna which are essentially as weak as Ch. 22 or weaker. But when I use this pre amp I am able to get my Ch. 15 at a reasonably good signal strength.
Just found this:
http://www.radioshack.com/helpdesk/i...play=guarantee
Try one of the Antennacraft pre amps from RS first. If that does not work then you can return it for a full refund. The following should work for your situation.
http://www.radioshack.com/product/in...lue=Amplifiers