Bruce, If you mount the KPA100 and/or the KAT100 in an external enclosure, the KAT2 will be locked to ANT1. If you place the KPA100 in place of the QRP K2 top cover, the KAT2 will not be present. 73, Don W3FPR Bruce Rattray wrote: > If I add the KPA-100 to my K2 and then the KAT-100, what happens to the auto > tuner that's in my K2? - tnx - Bruce. > >