the signal on the test page measures on frequency and one freqency only - 11778 V 27.5 2/3
this is on the north beam of one of the satellites and this siganl varies during the day - in my area that is around late afternoon early evening. if you are getting the EPG backgroundmusic then you will have some strenght and quality - as the music is on 11778, as is all the EPG programme data. if you could vewi this screen at the same time as watching Sky News then both bars would be off the scale as sky nes is on a very strong signal;
the reception of 11778 depends on
LNB skew (rotation)
digibox - some digiboxes just do not like this frequency.