I know I've made the last 2 posts but I'm a believer in finishing threads so I will make my final update. It would appear that my aerial is just shit. Changing from that white power supply which it turns out was showing 10.5v, to the bullet showing just under 12v has definitely made it better but it still breaks up a bit. I even bought the booster off eBay and that's even worse than the standard one. I don't know if it will help at all but I've plugged in both boosters because the 12v power supply definitely gave better reception than the 10.5v, so I'm now going with the top gear approach of MORE POWER! Hopefully it works, who knows...