Hi Peter & Tim,sorry for my late reply, I haven´t visited the forum for longer time. Thanks for your explanations on my request.
I am not sure which SD version I had installed when posting my question in August last year but the antenna symbol only occurs in case SD is connected with the Golze inflight weather receiver as GDL90 compatible device. Recently it occured using version 3.15.1 or 3.15.0 - not fully sure. I never used PilotAware.
Makes sense that the Golze device pretends to be a FIS-B station to get weather into SD. I´ll try to get this confirmed by Sebastian Golze.
If so, what is the difference between red and green symbol?
Best regards,
Marc