I had a look at mine last night as I have the trim out at the moment.
It would appear that both windows in mine have aerials built into them with the little control box above the window.
I agree, if it is structural a suitable frame that can be sealed and rivetted in is the asnwer.
It looks like the only solution is to remove the window glass and aerial altogether, find a repalcement aerial arrangement and build a frame from aluminium with the choice of aluminium or tinted persplex window / door.
I will try to look at some different designs over the weekend and will post the options up next week.
Does anyone have some detailed photos of the Dolium ones for the defender?
I am interested to see how the frame was done.

