so as you are aware mux 34 is very low please see my other post (aerial installation birmingham great barr b44)

well solution to fix this would be to fit a group a aerial which covers channels 30-36 you could use this A group aerial for your hd only amplify it,then combine with a wideband aerial for your digital signal.

or simply buy one of the new televes hd aerials not sure how good these are but will be trying one very soon no dought ,it has an intelligent adjusting balun/amplifier built in and adjusts the signal automatically so look out for that review,hope this helps.

i did a job in great barr b44 on saturday 12.6.10.the gentleman wanted four points one to each bedroom and the lounge all connecting up,so i fitted the aerial to the chimney with a 6ft pole tested the signal muxes 41,44,47,51,52,55 were all above 60 db so your thinking thats great well no it wasnt,heres why.

i then tested for mux 34 which comes from lichfield for the HD channels as he had brought a hd recorder and wanted channels 50,51,52 working heres the problem after checking the mux it was at 35 db considerably lower than the digital signal so i fitted the aerial run all the cables but after fitting a four way splitter the hd was breaking up,but the freeview was all working ok.

i couldnt fit an amp in the loft because it would make the signal to high and would overload the freeview tuners so after chatting with the customer we decided to connect the aerial on the roof to the main tv and connect to the hd box,then the other three bedrooms we connected to an exisitng aerial in the loft to obtain the freeview for his bedrooms.

but this posed the question of what if he wanted to get an hd box for the bedrooms it wouldnt work because the signal would be to low for mux 34,so if your thinking of buying a hd freeview box make sure you get your aerial checked before buying to see if you can pick up the channels this will cause quite a few problems in the future until they move it over to sutton coldfield as the mux is really low indeed let me know if you have experienced anything similar.