I updated my K3 on Friday to firmware 4.39 releaased in early July 2011
I use it with my KPA500 (serial # 316)
In bearfoot mode the K3 runs 100 watts
In driving the amp mode I adjusted it to get all green LEDs (540 watts
output). It is reliable and works all the time
I think those that are having problems with the two power modes on the K3
need to get the most current firmware 4.39 installed
I often make mistakes. I am no authority but the above works for me.
73 Jim W9VNE
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