Hi Will, another little tip. The coaxial plug, the one connecting to the aerial connection at the wall may well be dirty. Unplug it and give both the plug and socket a good blow then plug it in again. If you do the things that have been suggested, and either you or the aerial man has connected your box up, if you're still getting a noisy signal you could do worse than to get a new coaxial cable. They only cost a couple of quid. The existing one may be old, and cable does deteriorate over time. John.