Our freeview TV is in the area covered by the Crystal Palace transmitter. On a few channels such as Virgin 1, Bid TV and Fiver there is a very poor signal quality most of the time which results in the picture becoming 'blocky' and the sound skipping like hell. I would just switch to Sky Freeview but Virgin 1 is not on there and I quite like watching (trying to) Star Trek Voyager in the mornings. Is there anything that can be done about poor signal quality. Every other channel apart from the ones mentioned seems to work fine.