John, I'm not sure why I wrote "two arms," but this is the antenna I have, or very close to it: It's the center spar that's around 30" long, but that may be a mild overstatement.
http://www.radioshack.com/product/in...ductId=2103088
I mentioned that I built a Gray-Hoverman that produced pretty much the same results as the Radio Shack until this recent, mysterious change in quality on 14. Whether that speaks to the quality of RS products or my construction skills, who can say? (I'm not proud). The Combo antenna I rented from a local installer also showed the same symptoms on 7 and 14 but performed well on every other channel that I watch. I didn't notice what it was, but it had the approximate appearance of the Winegard HD 7694P. A pretty conventional looking design that was about feet long.
I'm not exactly obsessed with getting the local channels on the hill (7 and 14), but FOX 31 in Eugene isn't reliable under certain conditions with my setup. I was just hoping for a free solution, like discovering that there's a thick layer of moss on my roof. And I've only spent a few minutes looking at PBS 29, so I can't be certain of it, either. (I can find out though, and will). Channels 9, 13 and 16 from Eugene all are solid, so I seem to have a FOX-only conflict in both directions. Do you think it's because I voted for Obama?
But John, I'm warming to the idea of turning my back to the local signals from the north, since I have a pretty clear shot down the valley to Eugene. Then, I have a couple of tall trees about 20 feet from my house in that direction, and the house across the street is three stories high, but I think it's west of my path.
So I'll wait for your assessment of my RS UHF rig and maybe ask for a recommendation on a small UHF antenna for my eave, just about a 20 foot run from my TV. Or maybe there's a better choice for an attic UHF. The C5 is impressive, with the exception of 7, on the hill, so I think it's a keeper. Thanks, all. I appreciate your great help.