After measuring & fiddling around with all those capacitors, the rest of the board went together fairly easily:
GPS-HT Wouxun interface - brassboard
It’s difficult to test from the Basement Laboratory, although the tones and audio levels sound about right.
The next step: conjure up a box. That shape has nothing to recommend it, so I’m doodling an extrusion-like shell with endcaps that should work better and look nicer… but that’s behind some other stuff that must happen first.
