On Sunday, January 3, 2016 at 1:14:44 PM UTC-8, Andy Blackburn wrote:
On Sunday, January 3, 2016 at 1:06:43 PM UTC-8, Andy Blackburn wrote:

The point being that one ADS-B Out equipped glider will light up (within a 15 nm radius) all transponder-equipped contest gliders in range of SSR with pretty decent resolution (but no ICAO ID or aircraft type information unless Mode S). They should be visible not just to the pilot with ADS-B out, but to anyone with ADS-B In-equipped PowerFlarm - so long as the glider with ADS-B Out is requesting 1090ES transmission for TIS-B traffic - which ought to be the case since I doubt gliders would equip with UAT In only.

*** Clarification - it needs to be confirmed that PowerFlarm will show TIS-B traffic lit up by someone else with ADS-B Out. Otherwise you are looking at needing a $100 USB stick (or serial, or WiFi - and preferably dual-band) ADS-B In module - which would be useful in seeing power traffic as well as gliders. The home-brew units seem to see TIS-B traffic just fine.

Looks like a conundrum. But we haven't seen it in action yet so stay tuned...

9B

Andy,

I have seen it in action. A power plane Cirrus at Siskiyou Co has an ADS-b out. I see them taxi out and takeoff head south on my Powerflarm.

Richard
www.craggyaero.com