Aloha,
thanks for the positive comments. Tells me that I am on the right track.

No I want some opinions.
As the little wall section that I made for the main signal, I would like to do the same for the distant signal.
Now the question.
Do I make it very short? Photo one.
Or do I make it longer? Photo two.
I could in fact make it quite long, then I don't need a plastered slope with some grass.