I have been searching through the Fred Cady KE7X book for this and not finding it. Does anybody know what the error code KP1 means? I am getting it when using the KPA500 Amp on 15 and 10 meters on CW. Thanks! -- 73 de Ted Edwards, W3TB and GØPWW and thinking about operating CW: "Do today what others won't, so you can do tomorrow what others can't."