I am going with the "RJ45 Loopback Adaptor Method" option as per link above as this looks the most promising. I will be testing it this weekend. Pretty simple. Heres hoping.
Thanks for the heads up. I was going to use an unused Digital TV Antenna I have around my house, so no loss.
If its hard to get analogue receiption in a car, I can imagine how hard DVB reception will be!