3rd Party Flarm data for Situational awareness

Hi there,

I’m getting a bit confused about what is broadcast and what can be
done with the data provided.

The main question is:
• Can I (from a ground station equipped with a Flarm connected to a PC
via a serial link) see other gliders around/above me in real time, and
display these on my own digital map for collision avoidance purposes.

I had planned to use my known position on the ground and the relative
distances in the PFLAA sentence to work out where the aircraft is, but
I understand that that info is only published if the aircraft is a
threat, is this true?

If this cannot be done, what’s the point of the data port spec?

Many Thanks and apologies if this is in the wrong place