FLEX-6000 Signature Series - SmartSDR for Windows Software User’s Guide
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Adjusting the Audio Gain Levels
For the transmit level setting, adjust the DAX TX Gain slider until the peak hold bar registers below
0 dB on the SmartSDR for Windows Audio Input Level meter to achieve the power output
reasonable and customary for the digital mode you are operating.
Shown below is an example of the Fldigi Sound Card Configuration with a Physical Sound Card