[Elecraft] Who's On First?

[Richard Ferch]

That wasn't me, but...the optimum order is computer, then K3, then WSJT-X.

The reasons: Well, obviously the computer has to come before the software.
The process of starting up the computer causes various signal lines on the
serial port used for radio control to be toggled briefly, which can cause
annoying behaviour at the radio, so it is easier (although not essential)
to have the computer already running when you start the radio. The WSJT-X
software expects rig control to be working when it starts, otherwise it
annoyingly prompts you to reconfigure, and the software won't actually
start operating properly until the radio is turned on, so it is best to
have the radio turned on before you start the software.

73,
Rich VE3KI