Been working on a flight radar system for our field..
We have a 1800ft ceiling at The Scale Aviators.
So I built a ADS-B receiver system that picks up aircrafts transponders and provides, Speed, GPS location , height and other details from about a 80 km radius.
This Scale Aviators local system helps fill in any gaps in the global ADS-B system because we are nested within the NAAS valley.
I have set the system up so that it will only display aircraft below a threshold height that we can set on the day.
The system will then automatically broadcast a loud audio message that we define when any aircraft enter our defined model flying field watch area ( greater than our line of sight) below our defined set height.
More testing needed but it is easier to operate and working better than I expected..
see
