Trying to work the WAE SSB contest this evening, my KPA500 and KAT500 showed high SWR. When I hit TUNE on the K3s the KAT tuned OK, but a couple of times the K3s displayed FAULT 9. I looked through the K3s docs, and I didn't find any reference to faults. Can someone point me in the right direction to track down this problem? Thanks. Mike N4CF