[Sideband]

A lot of your troubles seem to be because you are going into things with incomplete kit! The freeview box will undoubtedly need tuning in since it's now operating in a different area. For that you WILL need the correct remote or at least one that properly operates the tuning and menu functions. Get that sorted out first.

You need to understand that SCART video connections are standard and the video level is industry standard. So if it has video output on SCART it will be at standard level and will work with any other SCART input. Also that SCART is nothing whatsoever to do with aerial input. Take one thing at a time