All, Received several emails about Digital Voice Over HF after Andy and I sent our QRV posts. Please see below for a quick guide on how to connect the rig to the PC sound card(s).
The DV software needs either two sound cards or one card and a USB microphone headset. A USB sound card will do fine as the #2 card. Hope this helps... Tony -K2MO Voice Input: This sound card input is used for the microphone. If you only have one sound card, a USB microphone headset will do. The software sees it as a second sound card. RX Input: This input is used for the incoming audio from the rig to the sound cards line-in jack. TX Output: This is the PC output audio (line out) that carries the DV signal to the rig. Voice Output: This output connects to the PC speakers and will carry the decoded voice output from the speaker jack on the PC to the speakers. If you have two sound cards, use the #1 card for the Voice Input / TX Output and the #2 card for the RX Input / Voice output. For one soundcard with a USB microphone headset: Voice Input -------- USB microphone headset Rx Input ------------ Rig audio to sound cards line-in jack TX Output --------- PC audio line out to rig Voice Output ----- PC speaker out to PC speakers or USB headset