I'm in the US, Colorado, working with a counterpart in Australia, to develop new p25 and DMR SDR software platforms.

So, I've been a ham more of my life than I haven't. And I've been deep into SDR since it became a thing;

Currently collecting a few 'test' radios for phase 1 and phase 2 p25, as well as DMR; and will likely move on to other modes. (Already have success with RX/TX DMR and P25.)
Also working with my friend in Australia to build a handheld device to host it on.

Ambitious, yeah, and some may say "Why bother" - but we mostly just want to pursue it and we've got more things working than not at this point.

Getting our new expanded radio lab set up - hopefully I can help out around here