ADS-B out: Someone set me straight where I'm wrong on this? And I'm only interested in ADS-B out, UAT for below FL18. Not addressing ADS-B in, or the space-based stuff or surveillance radar parts of ADS-B.
1. Legacy transponders (and new ones) blast away on 1090 mhz
2. For ADS-B out via UAT we transmit a bunch of data on 978 mhz - this includes the same data transponders transmitted before ADS-B, plus position, N number, and other stuff I don't care about.
4. The new WAAS enabled transponders handle it all - assembling AND transmitting the data.
5. For legacy transponders something like a GDL82 or a Skybeacon eavesdrops on the transponder and combines the transponder data with a built in WAAS source, and transmit it independent of the transponder.
6. A few hundred ground stations listen for the signal and pass the data to ATC. Their equipment stirs in with their other sources to get the big picture.
Looking for the GA pilot's basic need to know - functional understanding.
1. Legacy transponders (and new ones) blast away on 1090 mhz
2. For ADS-B out via UAT we transmit a bunch of data on 978 mhz - this includes the same data transponders transmitted before ADS-B, plus position, N number, and other stuff I don't care about.
4. The new WAAS enabled transponders handle it all - assembling AND transmitting the data.
5. For legacy transponders something like a GDL82 or a Skybeacon eavesdrops on the transponder and combines the transponder data with a built in WAAS source, and transmit it independent of the transponder.
6. A few hundred ground stations listen for the signal and pass the data to ATC. Their equipment stirs in with their other sources to get the big picture.
Looking for the GA pilot's basic need to know - functional understanding.
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