I have a Sagem digital box and I can only receive 26 TV channels, I have family in the area and they are getting over 50 channels, we have done the norm and been in the loft moving the aerial but we seem to lose more chanels than we gain. I do not get any of the ITV channels, channel 4 or 5, I also do not get E4 but I do get E4+1, which I find strange.
this happens to my sagem when I retune - i lose channels. Just keep retuning every 10 mins, until it finds all 60 have channels. What you will notice is that it will only find like 23 channels then when you do it again it will find the 60. keep trying it.