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Old April 15th 14, 11:51 AM posted to rec.aviation.soaring
RuudH
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Default PowerFlarm v3.40

Op zondag 13 april 2014 20:05:26 UTC+2 schreef Auxvache:
Went to update to the latest version of PF--3.40--and one item in the release note made me hesitate:


With this update Flarm hopes to reduce the numerous nuisance "dangerous traffic warnings" (DTW).
A nuisance DTW could be described as a warning with red beeping Flarm V3 display or DTW on Butterfly while the traffic that is causing this warning is still at a safe distance.

See photo of such a situation on https://dl.dropboxusercontent.com/u/...ic-warning.jpg
At that time I was climbing in a thermal and the gilder that caused this waring (equipped with transponder with ADS-B out) was flying past me at a distance of 1200 meters.

In Europe a lot of gliders are flying around with mode-s transponders with ADS-B out.
PowerFlarm does not treat the ADS-B signal in the same way as the Flarm signal for a number of reasons.

I have been flying with PowerFlarm for almost a year now and have seen many many nuisance DTW's caused by gliders that have transponders with ADS-B out.
In the mean time I have delivered diagnostic data to Flarm that enables them to improve the firmware and hopefully reduce the number of nuisance DTW's

I certainly hope that Flarm is able to solve this problem soon, because nuisance warnings are also dangerous. I you get used to so much warnings you might not react to a real DTW.