Originally Posted by
Obba
I assume you are correct FS.
But why wouldn't it have a transponder operating even if it's military (ie: not war time event), and flying through/over residential areas
Flightradar uses ADS-B not transponders. Not sure about RAAF policy. The BBJs used to show up with their callsigns, now just says 737. Hercs, C-17s say type, the King Airs and Spartans often say callsign and I have seen KC-30s on it.
Could just be that flying so low no ADS-B receiver could see as its line of sight.