Regarding smaragd post, the documentation is missing the details about MLAT, we need to fix that, this is the definitive statement
GDL90
includes MLAT and NACp figure to derive ambiguity circles
EasyVFR will use the NACp figure, SD will discard these figures
PilotAware (UDP)
includes MLAT, but no way (no syntax) to describe NACp, therefore no ambiguity circles
EasyVFR and SD will display traffic, no ambiguity circles
Flarm (TCP)
Currently contains no MLAT data, this will probably be added in the next version
Hope that clears any confusion, it will be added to the documentation
Thx
Lee