Flarm Radar Duplication

[David Martin]

My Oudie Flarm Radar will show information for another glider that has both ADSB and Flarm.  It shows information from both devices.  The information showing both sources with them overwriting each other making it hard to read.  Is there a way to delete say the flarm information for a particulat glider?

[Moshe Braner]

First of all make sure that the Oudie is not showing you traffic data from the internet (OGN, etc).  That can duplicate even the same FLARM targets (with a delay for the internet route).  If your Oudie does not have a SIM card, or is in "airplane mode", or you have set it to not show internet-sourced traffic, then that's not the issue.

If it is your PowerFLARM that is receiving both ADS-B and FLARM signals from the same aircraft, then it is the FLARM's responsibility to deduplicate those, which it will - as long as both signals are using the same ID.  If the FLARM (in the other glider) is not configured to send the same ICAO ID as the ADS-B, e.g., if the FLARM is sending the device ID instead, or the wrong ICAO ID, then there is no way to deduplicate them, as there is nothing linking the two.

[David Martin]

OK thanks.  Will check with the other ship to make sure it is set up correctly.

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[Mark Mocho]

One thing that can affect the Flarm "ghosting" the same glider is that the ICAO identifier line in the FLARMCFG.TXT file has to be at the top of the commands, just below the first command as shown below:

$PFLAC,S,DEF
$PFLAC,S,ID,A99999 (Where "A99999" is your aircraft ICAO identifier)

This made all the difference in my situation.