Originally Posted by
threemiles
It is not so easy with Mode-S and Multilateration in Dundee because there is no Mode-S interrogation in the airport vicinity. That's why ADS-B can be the future only.
There are 6 mode S receivers within 12 miles of Dundee as part of the trial.
I can now see mode S traffic in the Dundee circuit down 60ft. This of course is not connected with "Flight Radar 24" or any of the other commonly available surveillance systems.