LJ - That's reassuring on the mil receive side. When I'm tooling around at 500-3000' at just over a mile a minute
or so in the open FIR I've often felt a bit exposed. As you note, there a few low-cost solutions for receiving ADS-B, but if your not emitting ADS-B then you're not contributing to the coherent picture and you're fragmenting it further. There are some highly charged debates taking place in the GA forums on EC options, but I see SkyEcho 2 plus Flarm as a positive choice which supports ADS-B out, and it's self-contained nature is what I need in my machine.