After reading all the posts on this I 1) reduced tx delay from .2 to .1 on the ADVANCED tab, and 2) discovered to my surprise that VOX was still on from early failures trying to get PTT and CAT to work. I turned VOX off. K3 #2545 now has no timing issues with WSJT-X 1.8.0 in FT8 with or without the KPA500 on. The waterfall timing is perfect. 73 WD6DBM Eric
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