There is now a TS-890S .rig file for DX4WIN here:
https://dx4win.ad1c.us/radios/index.html#Kenwood
Thanks to Guy for providing it. I assume it will work with both
version 8.05 and 9.0x. Note that the maximum baud rate is 57.6K.
--
Jim Reisert AD1C, <jjreisert at alum.mit.edu>, http://www.ad1c.us