If you're looking for a small, powerful antenna, look this over...
http://www.digiwavetechnologies.com/...ge&PAGE_id=281
I use two in phase to get the same channels you are looking to get, it is VHF-hi/UHF. I'm 53 miles from the Helderberg antenna farm. It probably won't pull WRGB, as the channel assignments in the picture are for Australia, not the U.S., but, WRGB is simulcast on 45.3 in SD.
If you're interested, PM me, I'll tell you where you can get it...