My 105 superdish was woking great for the last month or so..Then today it snowed..Well after about 8 hours of snow fall i went to check the weather from my local station which i get from the 105 bird well my 811 couldn't find the 105 sat..Looked at the signal strength screen 119 and 110 well over 100 the 105 sat nothing..looked at the dish it barely had any snow on it but it did have a thin coating of ice on the dish..So i got some hot water poured it over the dish and the 105 sat came back..I guess the 105 is really picky with snow and ice build up..