The second revision, 2024-05-12 of the board. I discovered an error in the datasheet of the MAX3185 where it has pin 16 and 13 swapped. Other than this, it works as intended. I will have to respin the PCB and try again in another week 🙁
I did upgrades in 2007 or so when the V.24 board went extinct in the middle of a countywide upgrade.... and they were impossible to find then! Nice work!
