I tend to receive the 'no satellite signal' message on my Sky more and more often. It started off once every few months but in recent weeks can happen several in one day. I have found giving the dish and arm a few taps cures the problem immediately. When the signal is available (much of the time) the strength and quality are very good. Could the LNB are any other part of the dish be playing up? What costs are involved to rectify the problem - other than me giving it a whack from time to time with a long stick which costs £0! Many thanks in advance.