1 - When clicking on an aircraft on the FR24 website, what determines what "radar" is displayed in the lower left corner of the aircraft information? Often I see "radar 2" when I know "radar 1" is closer. Is this just selected by random?
2 - Why do business jets only show aircraft type and not callsign, when the aircraft callsign is transmitted? I have an ADS-B receiver myself where I can see what aircraft callsign is received by my receiver. I cannot display the aircraft on my own map, since it only has a Mode S transponder; however the callsign is basically always known. On FR24 however the aircraft only shows up with aircraft type.
3 - Why do some MLAT aircrafts show up with "Unknown", "No callsign" or just the transponder HEX code(?) and not callsign. This appears to happen mostly when in poor coverage. Still, since FR24 needs 4 receivers to plot a MLAT aircraft at least one of them should be able to know and display the callsign? Again as mentioned above the callsign is known by my simple ADS-B receiver when it receives a transponder signal.
2 - Why do business jets only show aircraft type and not callsign, when the aircraft callsign is transmitted? I have an ADS-B receiver myself where I can see what aircraft callsign is received by my receiver. I cannot display the aircraft on my own map, since it only has a Mode S transponder; however the callsign is basically always known. On FR24 however the aircraft only shows up with aircraft type.
3 - Why do some MLAT aircrafts show up with "Unknown", "No callsign" or just the transponder HEX code(?) and not callsign. This appears to happen mostly when in poor coverage. Still, since FR24 needs 4 receivers to plot a MLAT aircraft at least one of them should be able to know and display the callsign? Again as mentioned above the callsign is known by my simple ADS-B receiver when it receives a transponder signal.
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