Have you tried the antenna in different parts of the room (or in different rooms)? You may have interference from something in the vicinity of the TV. Use a barrel splice
to add a longer coax to the antenna. Get it away from all electronics, including the TV, and put it near a NW-facing window, if possible. Move it around a few feet at a time until you find a hot spot in the room for the problem channel.
Also, make sure the dipole rods are extended in a "V" - no longer than about half the total length of each rod.
If you have any FM radio stations nearby, they may also be interfering with that pesky VHF station. Check distance/power of nearby FM stations at http://fmfool.com
If you have nearby FMs, get an FM trap from RS:http://www.radioshack.com/product/in...uctId=10939219
Put it on the back of the TV.
If you are in a stucco building, definitely move the antenna near a window.