Note that all Program Options changes are applied immediately.Soundcard 1 - Provides for selection of Soundcards and other options.
Audio Device Group:
Input - The drop down arrow provides a selection from installed souncards for a card to be used for audio input.
Output - The drop down arrow provides a selection from installed souncards for a card to be used for audio output.
Fixed TX Offset Group:
The slider provides a means for adjusting the transmit audio frequency offset from the received audio frequency by plus or minus 100Hz. Normally this would be set at 0Hz unless there is a good reason for adjusting it.
Soundcard Clock Adjustment Group:
If the soundcard is off-frequency, the adjustment box provides an adjustment specified in parts-per-million. Once again, this would normally be left at 0 unless there is a good reason for adjusting it.