Typical of SUNRAY to accuse me of being wrong when I am not. Your first link shows a 14 element log periodic aerial wrongly described as a 28 element because someone has counted the elements twice. Your second link shows, as you say, an 11 element. I cannot see how any one would come up with 48 even counting the directors 4 times and the reflector 6 times.
The TV aerial industry as a whole do not count the elements several times, it is only some of the less reputable manufacturers, and electrical suppliers who know nothing about aerials that do this.
I cannot comment on the aerial behind your shed as the picture is not good enough.