from the sounds of it, you'll need to get a UHF aerial. You might get away with an indoor type bunny ears type but they only really work in very high signal areas. Always best to go with an outdoor uhf aerial for saorview. note that there is actually no such thing as a saorview aerial or digital aerial or hd aerial as I have seen advertised in some places. Bog standard UHF type is all you need. Obviously need to point it in the right direction too. Aerials aren't over sensitive, say, like a satellite dish, so the general direction of your local transmitter is generally fine