To those who say why say anything at all at an empty aerodrome...how do you know there is nobody else there if there is radio silence?
I have never forgotten an air tractor deciding to line up and take off with a tailwind in Northam, with zero calls, while I was on short final for the reciprocal runway. I had made calls but they chose not to talk or listen. IF they hadn't been such a large aeroplane it could have been possible to miss them.