so i bought a topfield 5800 a few months ago, but my aerial is really poor for freeview. I cannot get channel 3 and 4 during the day (signal strength is too low) and channel 5 is beginning to play up, but during the night I can get them OK. My nearest transmitter is Sandy Heath but the wolfbane site says its in group E which doesn't recieve all channels? The next closest is woltham which I think is a much lower signal from me. It says I need an amplified extra high gain aerial. (any suggestions are welcomed) I'm looking at maplins but is there a better place to buy one from? Also how hard are these things to fit? Thanks.