PDF attached contains notes about the software and hardware in the title. I may add to this post from time to time, if the need arises, and if so, I’ll upload a new rev if this doc. FYI, pay particular attention to fldigi not finding the correct COM port, and editing the COM port drop list to use it. Also note the use of fldigi SIG display to aid setting a usable input audio level for fldigi. Recall that the fldigi RX audio stream includes the radio volume > (hardware gain) > driver gain; the SIG level will depend on all 3. I had my F6 volume set at about 20% when I adjusted the driver gain to +1.0 dB.
Kenwood TH-F6A - digirig 1.9 - fldigi 4.1.22 - Windows 10b.pdf (348.5 KB)