Just acquired my first HF radio (FT-897) and am still trying to learn the ropes. Having some trouble determining exactly what I need for a good PC interface. From my understanding that there are essentially 3 connections to make - (1) audio from rig to PC, (2) audio from PC to rig, and (3) unit control. It seems like (1) could be accomplished with a stereo cable connection from the rig's headphone jack to the PC's mic jack, (2) requires a connection from the PC's audio out to the rig's Data port, and (3) requires a USB to CAT cable. Is there something I'm missing here? What is the advantage of a SignaLink or Rig Blaster in this configuration? Any other setup I should consider?