This one change of "Mode=None" solved my K3/Microham MK II issue. I now have WSJT-X v.1.7 working perfectly. Thank you!!! Lee, KY7M -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-and-WSJT-X-1-7-tp7624923p7624955.html Sent from the Elecraft mailing list archive at Nabble.com.