On Friday, January 30, 2015 at 3:31:04 PM UTC-8, WaltWX wrote:
The UK ATC authority, NATS, has implemented a trial with AOPA UK to test a low cost ADS-B out capability. Basically, they are allowing non-certified GPS to interface with the Mode S 1090ES which gives ADS-B out.

Some people have (illegally) tested this with their Trig and other transponders in the U.S and other places:

This is as much as I know...

http://www.nats.aero/news/nats-enabl...-ga-community/

Hope this pans out... and FAA is listening.

Walt Rogers WX

I am not aware of anybody, at least in the soaring community, *illegally* testing ADS-B Out. There are very small numbers of folks with experimental gliders who have configured ADS-B Out with non TSO GPS sources, and they have every "legal" right to do so as long as they correctly configure some of the GPS data fields. And those "non-complaint" ADS-B outputs won't likely now, and certainly won't in future, let those aircraft receive the usual slew of ADS-B services like ADS-R and TIS-B, but geeky glider pilots may want to do this, for exampel to provide longer-range tracking with PowerFLARM 1090ES receivers or tracking with ground based ADS-B receivers.