1. Press the [MENU] knob to enter the Menu mode.
2. Rotate the [VFO-B/CLAR] knob (or press the [▲/▼] button) to select Menu item "105 LSB RX CARRIER" or "106 USB RX CARRIER".
3. Press the [SELECT] button.
4. Rotate the [VFO-B/CLAR] knob (or press the [▲/▼] button) to adust the receiver audio response as desire.
5. Press the [SELECT] button, then press the [MENU] button to save the new setting and exit to normal operation.