How does that work? "Xpdr don't hit Xpdr" !!!!
When TCAS becomes universal, or an adaptation of PCAS or whatever it is, and all these other systems on the market
Most of them are based on Mode C as a starting point e.g. TCAS will provide TAs and (uncoordinated) RAs on a Mode C. But FLARM is completely incompatible...
I am just making the point in the debate that Mode C is so well established, both between aircraft and with ATC, that future developments / training / rules might be best directed at these systems...
NoD