Over the weekend I had trouble with Mt Fitzherbert - Wellington TV3/C4. In my case, the Signal strength was quite high at about 90%+ but the Quality was very low - less than 10%. These figures are what my Panasonic 850Z with Freeview Tuner reported.
Reading Cyril7's response to another poster, advising that Quality is a measure of the Signal to Noise on the transmission, I wondered what could explain a very low Quality level with good signal strength. Does anyone have any idea how this can occur?
During the same period, the remaining transmitters at that site were all delivering good signal strength (i.e. 90%+) and good Quality (also 90%+). So the TV3/C4 transmitter was the only one delivring poor Quality.