I have tried to make a circular feed based on the idea of DC2TH with a 2x 4el. PCB yagis from LZ5HP. I found that one yagi gives me good result so I decided to try this feed. Used 100cm offset dish.
I make similar construction like this one:
But I have make a small experiement with 1 yagi only. If the yagi was horizontal (above or bellow LNB), the signal was noticable stronger than I try vertical (left or right). The difference was abt. 4dB.
Question - it is due that the feed is not absolutely in the focus point or due that the offset dish push the energy not consequent?
Did anybody observe similar results?