I have been using Signallink with the FT891 in CAT mode for years with no problem. The problem is WSJT 2.4.0. Look at the specifics above to see what is wrong. I didn't say but I use Hamlib along with WSJT....The 891 is included in the library. Thanks, Ken KB4XT
Ken
You said in your previous post that /dev/ttyUSB0 is no longer available. I don't understand the jump from this statement to the problem is with 2.4.0
