I upgraded my K3 to a KAT3A to realize the marginally lower insertion loss on 6M. The original KAT3 is fully functional, but it is now surplus to my needs. For Sale: Elecraft KAT3 automatic antenna tuner module, $150.00, free delivery to USA only. Contact me via: tposey at nettally.com <mailto:tposey at nettally.com> 73, Terry K4RX