In an effort to become more familiar with my FT-891 I've decided to use it as the main station rig for the time being. I have no love for this radio but keep thinking that I just need to "give it a chance" and it'll eventually prove its worth to me. Yeah, okay...more on that topic in a future post.
I spent more time this morning than I'm willing to admit in getting all the menu items and WSJT options selected in just the right way as to make everything talk nicely together courtesy of an Easy-Digi interface from KF5INZ. After that unspicified amount of time, VA3TO went into the log as my first FT8 QSO with the FT-891.
As a possible help to others, and an anticipated reminder to my future self, here are the details:
I never could get CAT or PTT control with the Easy-Digi's built-in USB cable. Instead, I used a separate dedicated USB cable to connect rig and laptop directly. This requires downloading the drivers from Yaesu's website for the FT-891. Once the drivers are installed, the USB cable is seen by the computer as two COM ports - a "Standard" and an "Enhanced". The Standard is for PTT; Enhanced is for CAT control.
Menu options in the FT-891:
05-06 CAT RATE 9600
05-07 CAT TOT 1000
05-08 CAT RTS DISABLE
07-12 PC KEYING DTR
08-01 DATA MODE OTHERS
08-09 DATA IN SELECT REAR
08-10 DATA PTT SELECT RTS
08-11 DATA OUT LEVEL 10 (Watts)
08-12 DATA BFO USB
And finally, the WSJT "Radio" set-up screenshot: