Check into LP-Pan and NaP3 software. Absolutely no need for HRD. With those and a connection to the K3, you'll be able to mouse on a displayed signal and have the K3 tuned to that frequency. You'll also be able to change bands, filters, select split or not from the NaP3 screen with your mouse. You'll need a good soundcard - see the N8LP site for soundcards that work well with LP-Pan. If you also want to be able to set the K3 frequency by mousing on DX spots, check out DXLabs suite. LP-Bridge will then allow you to share the K3 com port between the logging program and NaP3. The only piece of this that you'll have to pay for is LP-Pan (and the soundcard).