Hi Bob, Do you want to do SO2R with the 2nd K2? I have been running two K2s, SO2R using either TRLog or CT with an old laptop and a W4AN type homebrew switchbox. The laptop has only one serial port, so I switch the KIO2 lines with a multi-pole relay - not elegant, but it works. If that's what you're looking for, I'll send details. 73, Ken ZL1AIH