Are you using a coaxial wire between your TV and your antenna?
Use the telephone wire - the same type that comes from the exchange bix to your home - between the TV and your antenna. The copper in it is much better and conducts much better as well... It should help you out.
If you're too far away geographically from the booster, your results will vary - but using the phone wire will help a lot. (It helped us before we got cable).