Ats20 Firmware Link

If turning the knob clockwise moves the frequency down instead of up, you need to invert the encoder pins in the software. Look for the encoder pin definitions (typically labeled ENCODER_PIN_A and ENCODER_PIN_B ) and swap their assigned numbers. 4. Severe Distortion on SSB

What are you trying to fix with your current firmware? ats20 firmware

Tell you for the best SSB performance .

This one focuses on the receiver core more than the UI. If turning the knob clockwise moves the frequency