The Aura will not give you anything other than what you get now with the limitations of your poor signal. It is only for use with terrestrial TV, not satellite.
If you get a dish, you will need to get a separate satellite receiver as well.
Edit: You may well be better off trying to discover the reason for your poor terrestrial signal which could be down to an inadequate aerial or perhaps the box is not tuned to the best transmitter for your location.