Ah ha. The radio 'erased' my filter selections for USB. I merely had to go to the K3 utility, re-set just the filter selections, hit 'apply' ... and all is well again. My other option would have been to run in LSB on 20 meters, start at the end of the contest, and then operate backwards up to the beginning. Steve KZ1X/4 K1, K2, K3, etc.