Garmin GPS 20A with Trig TT22 in Experimental Glider - OK?

I am receiving traffic data miles away from other aircraft. It is not triggered data meant for another aircraft. I have a Rasberry Pi set up to receive 978 UAT. Program is called STRATUX. The Pi rebroadcasts on wifi to my iPad and ForeFlight software.

FAA openly broadcasts TIS-B data on UAT, they opened it up this fall. From what I understand.

I was at 6500MSL over Searchlight NV and receiving traffic data in the Las Vegas Valley, 30 miles away. All I needed was line of sight to Black Mt., where the FAA ground station is located.

On Saturday, December 19, 2015 at 9:38:51 PM UTC-8, Bill T wrote:
I am receiving traffic data miles away from other aircraft. It is not triggered data meant for another aircraft. I have a Rasberry Pi set up to receive 978 UAT. Program is called STRATUX. The Pi rebroadcasts on wifi to my iPad and ForeFlight software.

FAA openly broadcasts TIS-B data on UAT, they opened it up this fall. From what I understand.

Unfortunately it is next to next to impossible for a user with an ADS-B receiver to work out what is going on, what ground station is transmitting data what for which client(s) aircraft. You at best can tell if a message was ADS-B direct, ADS-R or TIS-B. But you very likely cannot often find details of a client aircraft. And you expect to see some UAT TIS-B and ADS-R data for other client aircraft.

I am not aware of the FAA just retransmitting all this data without a client. Do you have a link to them talkign about doing this? Organizations like AOPA have been asking for that for a while, and getting pushback AFAIK. Retransmitting TIS-B blind seems a horrific bandwidth waste I'm not sure it is doable. The only thing I am aware of is the FAA threatening to clamp down and become more restrictive starting in January 2016 tightening up the requirement that client aircraft have compliant ADS-B Out (well SIL0 type GPS Specs). And there was a separate other change, all really covered here... https://www.faa.gov/nextgen/programs...3-15-webV2.pdf -- but again not what you are describing, but I could see how the description of some of those changes is possible to cause confusion.

I was at 6500MSL over Searchlight NV and receiving traffic data in the Las Vegas Valley, 30 miles away. All I needed was line of sight to Black Mt., where the FAA ground station is located.

Yes but that alone does not prove that there is blind re-transmission on UAT. All it likely means is there was one or more ADS-B or TIS-B UAT client aircraft somewhere near that traffic.

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I am aware of Stratux, it is a very nice little project. I have not had time to play with it on my Pi yet.

Thanks Darryl,
I'm still learning all the ins and outs of ADS-B. I remember the AOPA articles requesting the FAA open up the TIS broadcasts to all users.
I thought I had read something that it occurred this fall.

I see where FAA is considering after Jan 2016 to not rebroadcast traffic data on targets that are "non compliant" or NPE. This opens holes in the system after the FAA has allowed experimental aircraft to install equipment that meets specs, but not TSO'd. Will those targets not be retransmitted.

I realize I am flying within a busy Mode C Veil area and will have a lot of aircraft with valid ADS-B Out to trigger the TIS broadcast on UAT and 1090ES.
I did receive TIS data on UAT. From my location over Searchlight, NV. Any "expected" OUT aircraft would have been many thousands feet above and on the 1090ES frequency.

It is now 2016 ( for all practical purposes) and within 2-3 yrs we will need to install WAAS GPS and ADS-B out for the tow plane. Hopefully a reasonably priced single box unit. It would be interesting to see the results of the ANPRM study on transponder or ADSB requirement for gliders. We only have one club glider that has no electrical system with no radio/transponder capability. There are a few privately owned gliders with no transponder.

BillT