I'm studying ADS-b and trying to understand all of the variables.
I understand that there is 1090ES and 978UAT and that 1090ES is basically buying a new transponder that's updated to output ADS-b, while 978 UAT basically piggybacks on your existing mode-c transponder.
If I understand this right, then if you are using a 978UAT/OUT setup and squawking VFR/1200, then you will always be dealing with shadow if you are seen on radar, because the TIS-b signal you get from the ground doesn't have have any way to identify you, and thus your 978UAT/IN gear see's you as a target, but doesn't have any way to filter you out.
If that's true, does that mean that the only way to fix this is to get a squawk code, then enter it into the filter of your ADS-b/IN gear or use a combined ADS-b IN/OUT solution?
Seems to me the only way to absolutely get rid of shadow is to use 1090ES and put your hex code into the filter of your ADS-b/IN gear.
The major con to that, other than cost, is privacy. From then on, the FAA knows your every movement.... did I get that right?
Thanks,
schu
I understand that there is 1090ES and 978UAT and that 1090ES is basically buying a new transponder that's updated to output ADS-b, while 978 UAT basically piggybacks on your existing mode-c transponder.
If I understand this right, then if you are using a 978UAT/OUT setup and squawking VFR/1200, then you will always be dealing with shadow if you are seen on radar, because the TIS-b signal you get from the ground doesn't have have any way to identify you, and thus your 978UAT/IN gear see's you as a target, but doesn't have any way to filter you out.
If that's true, does that mean that the only way to fix this is to get a squawk code, then enter it into the filter of your ADS-b/IN gear or use a combined ADS-b IN/OUT solution?
Seems to me the only way to absolutely get rid of shadow is to use 1090ES and put your hex code into the filter of your ADS-b/IN gear.
The major con to that, other than cost, is privacy. From then on, the FAA knows your every movement.... did I get that right?
Thanks,
schu