Here in Chch, we have used the EyeTV Hybrid (US

and connected to main roof aerial to get Digital signal. Also in home office using the little antenna on window sill, able to get signal with an older EyeTV410 (Firewire) connected to Power Mac. Was surprised that the little antenna worked as it is facing north rather than the Cashmere hills (I am guessing that is where signal originates). Then again with the flat terrain of Chch you are pretty much line of sight, just on opposite side of the house.
Was not sure that you could remotely connect to the device, however you can stream your recordings over Wifi with EyeTV 3 - the computer recording will need to connect to antenna somewhere.