I’m finding that the problem with our digital tv is that there seems to be very limited pockets of random space which pick up a mediocre signal and that the best signal generally require someone to hold the aerial or for us to improvise hanging the aerial in mid air. Just a couple of millimetres makes all the difference between a full clear picture and this broken graphical mashup. This is the worst I have seen it but I have to wonder what makes these patterns you see here.