No, the KPA100 needs K2 specific signals to operate properly. Those specific signal lines are not provided by the KX3. 73, Don W3FPR On 12/31/2011 4:20 AM, David Andrews wrote: > I know that the 100 watt amp for the K2 can't be driven by just any rig, but > can it work with the KX3? Does anyone have any bright ideas? > >