Not by default, but it wouldn't be hard to create a log of all traffic. You'd only be limited by the capacity of the SD card.Does a stratux or pi record?
Not by default, but it wouldn't be hard to create a log of all traffic. You'd only be limited by the capacity of the SD card.Does a stratux or pi record?
Cool...thanks. I'll wait a bit before buying in, as my only interest is checking a GDL-82's initial broadcast, as you've done with the Skybeacon....I have good reason to believe the GDL-82 is much more anonymous, but hey, I'm the guy who preaches "trust but verify".
Dan, does your GPS WAAS position source have a way to power up and get a lock before you power up your transponder and GDL-82?
Doing so gives the GDL-82 the fastest chance to create the self-assigned anonymous ICAO number. It comes from position and gps clock.
Air mode change from ground may be the cue to actually be anonymous, also.
If your previous notes are correct, each line in the .csv output file represents one second. I'll try to confirm independently, but if true, the "real ID" broadcast writes four lines before generating a random ICAO code, i.e. lasts about 4 seconds.
Where is the, "like" button? Nice update, thanks for the research, Dan.
I leave my Mode C transponder in standby until ready to taxi, which I think leaves the GDL 82 in standby during its GPS acquisition and start up. Jim
The GDL goes quickly anonymous, from what Dan posted. Today you would have to be at one of the 35 or so major airports that use ASDE-X on the ground and have GBT installations- The FAA's UAT towers.
Or, you would have to be receivable by a GBT anywhere else, on the ground, at power up. Slim chance on average, today.
Secondary concern is the public side, for now, the public side is 1090-centric. 978 has to get to the info websites via the GBTs and active flight plans. IF Anonymous from GBTs, no one sniffing your UAT startup, no code but 1200- today, you are likely anonymous, with some caveats.
Right?
Right?
Crowd-sourced 978 monitoring in the future would perhaps not matter, unless the initial identification that is broadcast at startup could be used to label you thereafter?
Jim,
Thanks for the additional information, this is very helpful. Its also not very encouraging that even some of Garmin's own staff are confused about this issue!
AC-165B has more to say (copied below). If I'm reading this right you are allowed to broadcast a randomized 24-bit code and no call sign under certain conditions (978, squawking 1200, no flight plan). However...you are required to broadcast your aircraft's actual 24-bit code plus a call sign when the unit is initially powered on. If anyone is listening at that point you would not be anonymous.
The vague part would seem to be how long the powering-on phase lasts. According to what FreeFlight says on their web site (see Post #59 above), it lasts through the first few minutes of the flight. After that you are not broadcasting any identifying information, but if the system has already acquired your target and associated it with your callsign this may not matter. I don't doubt ATC could continue to track you solely based on your GPS position.
Unless of course the FreeFlight website is simply wrong!
DanH said:We bought UAT units marketed to us as being anonymous, not "Switches to anonymous after a short period", or "Anonymous if no one is listening".
Anonymous was the manufacturer's representation. It's what we have a right to expect. I prefer to believe the people involved adhere to a high standard, so I'll be looking for a software update, not a workaround.
A software update would be great, but in order for that to happen, the ADS-b vendor would have to interpret the above to mean that the Tail number resolvable ICAO number must be set at boot, but we don't have to broadcast until it's changed to anonymous.
Is there any real hope for that?
We bought UAT units marketed to us as being anonymous, not "Switches to anonymous after a short period", or "Anonymous if no one is listening".
Anonymous was the manufacturer's representation. It's what we have a right to expect. I prefer to believe the people involved adhere to a high standard, so I'll be looking for a software update, not a workaround.
This has nothing to do with garmin and everything to do with the regs. Suggest you take a minute to deep dive into those before knocking garmin. As for privacy in aviation, that has already been discussed in great detail. Recommend you sell the Super D now and stick with ultralights if that is the concern
This has nothing to do with garmin and everything to do with the regs. Suggest you take a minute to deep dive into those before knocking garmin.
Gents
I'm been following this thread for a little while and I'm still wondering why some here wanna be ''Anonymous'' so much...
Are you guys planning on buzzing your next door neigbour or something and don't wanna get caught or do some special ops flying ??..what is it..
Gents
I'm been following this thread for a little while and I'm still wondering why some here wanna be ''Anonymous'' so much...:
I'm been following this thread for a little while and I'm still wondering why some here wanna be ''Anonymous'' so much...
Are you guys planning on buzzing your next door neigbour or something and don't wanna get caught or do some special ops flying ??..what is it..
A separate switch dedicated to being able to turn off just the transponder, and now all privacy concerns are met. As long as you stay out of A, B and C airspace, nobody cares. You still have adsb in and life is beautiful.
Hi Bruno, It's an interesting topic, and one that I believe many feel passionate about. I was just at a meeting in Switzerland where this very topic came up, and there was a lot of passion there as well. Here we are allowed to turn off our transponders as long as we are not in "controlled airspace", and that was the official answer to how to remain anonymous....I obviously have offended some people with my question and as such I apologies ..Post have been deleted..
I will be anonymous for a while.
Have a good evening all
Bruno