Hi,
Have you tried CatRadio (from IZ8EWD )with Kenwood TS 990?
If you've tested it, please let me know, I'm trying, but still not working completely.
CatRadio seems to be a very promising software for dealing with radio.
https://forum.log4om.com/viewtopic.php?f=33&t=7467
CatRadio with Kenwood TS-990
CatRadio with Kenwood TS-990
73 Manuel Fernando CT1BXX