On Saturday, September 30, 2017 at 5:39:42 PM UTC-4, Darryl Ramm wrote:
I don't understand why you think existing PowerFLARM devices are related to UAT. The only ADS-B thing a PowerFLARM can do is receive 190ES In, and only that direct from the 1090ES Out aircraft. They come out of Europe were there is no UAT and are completely incompatible with UAT. If UAT never existed PowerFLARM would be *more* useful in the USA because you would see all ADS-B Out traffic. PowerFLARM does not transmit on UAT, can't see UAT, and can't receive ADS-R relay of UAT traffic (even if you have a suitable ADS-B Out system to cause your glider to become an ADS-R client).

- thanks Darryl. So I had the ADS-B frequency that PowerFLARM uses backwards. So is ADS-R one-way only, relaying 1090ES traffic to UAT and not the other way around? Doesn't that limit the usefulness of UAT for GA aircraft, if it does not make them directly visible to the heavies? Or is there some other reason why PF won't receive ADS-R? (This over-complicated system makes my head hurt.)