Originally Posted by
Old Akro
why AsA can't track aircraft at Hotham, but the free web based Flighaware and Flightradar can.
Answered many times on this forum, most of what you see on Flightradar24 and Flightaware
is derived from ADS-B data not SSR, and they largely rely on ADS-B receivers installed by hobbyists fed into their systems.
To quote Flightradar24:
Flightradar24 coverage is only available in areas where someone has installed an ADS-B receiver and shares data with the Flightradar24 network. We are unable to provide coverage in areas where no ADS-B receivers are installed.
Airservices has limited SSR coverage in the area, and whether they have since installed an ADS-B site that has low level coverage in that area I don't know.