I have an intergrated digitalTV, so I should be able to pick up free to air digital channels (BBC Choice etc.), but I live in a group of 8 flats with a communal aerial. I cannot tune any Digital stations in because the signal is too weak. How can I overcome this? Would a signal booster do enough or am I going to have to have my own aerial installed? Would connecting it to an existing satellite dish work? (if I do have my own aerial installed it'll have to be internal because we're not allowed to put aerials/dishes/etc on the building.)
A signal booster is likely to help but is unlikely to give a perfect picture. You need to have your own aerial fitted or the communal one upgraded. Connecting to an existing satellite dish will only work if your tv has an integrated satellite receiver. There are basically two digital technologies: via standard aerials and via satellite. Which does your tv use? An internal aerial will be useless. Fitting one in the loft is a possibility but it will receive a weak signal due to the roof.