Although I live in a marginal area, my UHF reception has always been perfect thanks to a very high aerial on the roof. Now, just since the last couple of days, reception of TV3 and Four has suddenly deteriorated. I get a lot of pixellation and partial frames. My receiver does not have much in the way of diagnostic tools, but it does give a quality measurement and that bounces between +/- 40 and +/- 80. I have perfect reception on all other channels and the quality reading stays between 80 and 90 or so. It only drops below 80 on TV3 and Four. I assume this is just a signal strength indicator of some kind.
To help me diagnose this, I need to know if anything has changed at the other end. Does anyone know if anything is going on with the Mediaworks transmissions? Could this have anything to do with the arrival of Duke? I just rescanned all of my frequencies and I see no trace of Duke, but am not sure if I should. Any help on this would be much appreciated. I don't think anything has happened to my antenna, and it would be a real pain to fix if something has, so I'm hoping to find an explanation elsewhere.