Hi Alex,

The traffic data is sent out of each unit all the time. A FLARM unit on the
ground can receive the traffic data from all nearby FLARM units and send the
traffic data out its serial port - whether the nearby traffic is a threat or
not.

In the air, I can see all the traffic in the area on my FLARM display -
whether the nearby traffic is a threat or not.

However, I don't know how much range you will have if your FLARM is on the
ground. Ground obstructions will likely limit the range quite a bit. But
it would be a neat way to keep track of all your club's gliders - at least
the ones that are nearby.

Best Regards,

Paul Remde
Cumulus Soaring, Inc.
____________________________

"Alex Kemp" wrote in message
...

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