Hi David
You can DIY an audio interface for a few bucks, using a cheap USB audiodongle, two 600 Ohm transformers (in and out) and a mini din plug. Plse google, there are many schematics around. NB Xiegu mini din pins = the same as Yaesu.
for CAT you can use the same cable as for the G90. You'll find them cheap at ebay or ali.
But a DE-19 is easier ;-)
73's
Robert
