We have an outdoor antenna up in the attic under a metal roof so you might be able to get some channels since your pattern looks similar to ours. Where we get NBC, CBS, ABC, PBS, and FOX from the 274-278 direction about 30 miles away:
We got the antenna from Home Depot years ago but it looks something like this http://www.homedepot.com/p/Channel-Mast ... /203763043
which was a hard fit with the 6-8 long poles at the end in a small attic. There is just the antenna and a good coax cable to the living room below while there are no amplifiers or other stuff attached.
Granted, we do lose the fox channel at times depending on the weather (Snow/rain/wind) since we are surrounded by trees as well.