I have been fooling with this program and listen to the statewide (RI) P25 system on 800mhz. I can receive pretty good signals but audio is warbly...running my SDS200 side by side with DSDplus on computer, I can hear the scanner audio is fine, but DSDplus audio is sometimes garbled. I have tried adjusting GAIN up and down but no difference. There are 2 settings AMBE and IMBE under the decoding tab. I read somewhere by setting these to a lower value than the default of 50, to 35 would help. No difference. Is there anything I can do to improve audio quality? The dongle I have is an "RTL-SDR" one.