I did wind up buying a Yagi antenna. http://www.ebay.com/itm/131432949203?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
And then I bought a small antenna mount at Amazon: http://www.amazon.com/gp/product/B003D1QPHK?psc=1&redirect=true&ref_=oh_aui_detailpage_o03_s00
I drilled a hole through a board on the inside and out through the metal barn and FINALLY I get a consistent signal with a constant live streaming image. I'm only at two bars but it stays on. I have it aimed on the entrance to the barn. That antenna has a 15ft cable which helped a lot.
Are you live broadcasting from a trail camera? How's that done? I'd love to do it if it is possible.