On Wed,6/3/2015 9:29 AM, David Jorgensen wrote: > The K3 does not operate on 6M, The K3 is an excellent 6M radio. It's only shortcoming is that it needs a preamp for 6M, and Elecraft has long sold one as an accessory. A new improved preamp is standard with the new K3S. My KPA500 puts out more than 500W on 6M. 73, Jim K9YC