I use Logic with my K3 with no problem. In my set up, I am using Ham Radio Deluxe and DM780 and I have an LP-PAN to run with SDR and a Steppir SDA 100 to control my Steppir vertical. I connect to the K3 using N8LP's software that allows sharing of serial ports. If you just want to connect the K3 and Logic that would make it much simpler. Good luck and 73, Joe AF1E