On Wednesday, March 21, 2018 at 11:14:28 AM UTC-7, Dirk_PW wrote:
Question... Has anyone with a FLARM actually flown close enough to a glider that is outputting both ADS-B and FLARM and verified that only one aircraft appears on their display? The glider would have to be in range of the FLARM to ensure that both signals are hitting the front end of the FLARM.

Yes PowerFLARM 1090ES In and FLARM deduplication works. Why the question? If it's not working the likely suspect is the FLARM or transponder have mismatching ICAO addresses.