Thankyou both. I honestly didnt know the practical or technical ins and outs of what I was thinking. However, from the point of view of LBA, Great Dun Fell could provide improved SSR coverage in the high ground to the north and west of the airport, whereas Claxby would be better suited to cover areas to the south of LBA. That said, there are several ATC radar units in said area (Doncaster, Humberside, East Midlands and Manchester) already.