190-00592-02 Rev. AGarmin G1000 Pilot’s Guide for the Diamond DA40/40F4-16AUDIO PANEL AND CNSThe NAV radio is selected for listening by pressing the corresponding key on the Audio Panel. Pressing theNAV1, NAV2, DME, or ADF Key selects and deselects the navigation radio source. Selected audio can be heard overthe headset and the speakers (if selected). All radios can be selected individually or simultaneously.Figure 4-19 Selecting a NAV Radio ReceiverNAV RECEIVER MANUAL TUNINGThe NAV frequency controls and frequency boxes are on the left side of the PFD and MFD.Manually Tuning a NAV Frequency:1) Turn the NAV Knob to tune the desired frequency in the NAV Tuning Box.2) Press the Frequency Transfer Key to transfer the frequency to the NAV Active Frequency Field.3) Adjust the volume level with the NAV VOL/ID Knob.4) Press the NAV VOL/ID Knob to turn the Morse code identifier audio on and off.Figure 4-20 NAV Frequency TuningPressing theFrequency Transfer KeyTransfers NAV Frequencies BetweenActive and Standby Frequency FieldsTurnNAV Knob toTune Frequency inTuning BoxPressVOL/ID Knob to TurnMorse Code On or Off