Hi, We have a roof mounted group C/D contract aerial ( about 12 years old ) which feeds into a booster behind the main TV ( via Sky and a DVD player ) and then gets fed around the house. This works fine for analogue TV and Sky/DVD's. We pick up from the Oxford transmitter and I was told a very strong signal, the transmitter is about 12Km away and nearly line of sight from the aerial. We now have a freeview box which is having some problems picking up certain channels. Mux1 channels are fine even though they are broadcast outside the Group C/D (C34) but Mux2 stuff breaks up all the time. Some of MuxA channels are OK like Five US / Life but BidTV and Pricedrop have problems. The Freeview box only gives a Signal Level and this is around 85-90% for the Mux1 channels but 60-65% for the Mux2 stuff. BidTV on MuxA shows around 80% but still breaks up. Do I need a better aerial to increase the signal for Mux 2 /A or could our strong analogue signal be causing problems and should I try an attenuator - would a strong analogue signal also cause problems on the other Muxes or only on the weker ones ?. Any advice very welcome. Thanks.