Hmm, I am starting to worry now. The last two antenna questions were specifically addressed to Jay or Don...
Maybe I do need to find a new life? lol...
Welcome Judy... You have the Pig of the bunch here.
Could you go to
TV Fool
Be sure to do it twice if you can. Once with your current antenna at 15 ft then say try one up 50 ft.
Also if you are very rural, TVFool's address to coordinate converter built in doesn't always work that well, due to the post office database he uses.
So go here first for better results
Google Maps Latitude, Longitude Popup and you may need to zero in as close as you can to your house with satellite view.
Then click your house or as close as you can get and copy and past the lat and long coordinates to TVFool, using it's coordinate mode (check the coordinate box).
In both plots post the bold link they give you here. Then we can go look at the results.
Then we can see if it's worth trying and with what type of set up.