Icom 7300 WSJT-X Using DXLab Suite Commander, JT Bridge And RUMLogNG
I eventually broke down and used a workaround. I used Ham Radio Deluxe for rig in WSJT-X and Ham Radio Deluxe was running on my laptop. You can see how this works in this video: Icom 7300 WSJT-X JT Bridge macOS Demo.
WSJT-X Using DXLab Suite Commander For Rig
I like to use "split" operation in WSJT-X. That ruled out using "none" for rig in WSJT-X.
I also didn't want to change anything in the Icom 7300 menu each time I used WSJT-X, so that ruled out using the Icom 7300 as the rig. RUMLogNG requires the CI-V connector in the menu to be set to unlink, however WSJT-X doesn't like that setting and will not work with the Icom 7300 set as rig. So it was a catch 22.
Using DXLab Suite Commander is what I saw as a solution, but I couldn't get it working initially.
That's where the workaround came in. I used the PC with Ham Radio Deluxe running through the CI-V cable and the USB cable from the Icom 7300 went to my iMac. I'm really surprised this worked, but it did.
Use Two Cables or Try Again
After posting the above video with a request for help, I got a couple of good suggestions. The first came from Facebook (Patrick ON3CQ) and it was what I had done with my PC. Use two cables, one for rig and the other for data. This is very acceptable and works great. I tried it and it works without issue.
However, I'm trying to stick with one cable for now.
The second suggestion came from YouTube (Ron KF5JRA) and it was really just what I needed, a push to try WSJT-X using DXLab Suite Commander again. This time I saw it clearly. The ports for CAT in WSJT-X and JT Bridge. See photos on the next page. Click on the photo to enlarge the image.