Thank you Spanners and GG. I have a quad LNB - two outputs for Sky and am using one of the 'spares for Freesat.
I understand that the cable for satellite feed is, apparently, bi-directional but I just cannot get my head around why it cannot be split. I would have supposed that a single feed into a switchable dual output would be no different in concept than having two totally separate cables. I accept that it isn't available but it doesn't make sense - inadequate brain cells I suspect
