Com Radio Selection; Marker Beacon Receiver; Marker Beacon Signal Sensitivity - Garmin G1000 Reference Manual

SECTION 5 – AUDIO PANEL
5.1

COM RADIO SELECTION

Pressing the COM1 MIC or COM2 MIC Key selects
the active transmitter (i.e., microphone). The associated
receiver audio (COM1 or COM2) also becomes selected
when the COM MIC Key is pressed.
To prevent deselecting the desired received audio
when pressing another COM MIC Key, press the already
selected COM1 or COM2 Key before pressing the other
COM MIC Key.
5.2

MARKER BEACON RECEIVER

The marker beacon receiver is always on. Only the
marker beacon audio can be turned off. Figure 5-3 shows
the marker beacon annunciators on the PFD.
When the MKR/MUTE Key is pressed, the key
annunciator is lit and the audio tone can be heard over
the speaker or headsets during marker beacon reception.
When the tone is active, pressing the MKR/MUTE
Key once mutes the audio but does not affect the marker
annunciator. The audio returns when the next marker
signal is received.
To turn off the marker beacon audio, press the MKR/
MUTE Key once when there is no marker indication
present, or press twice when an indication is present. The
key annunciator will be extinguished when the marker
beacon audio is turned off.
5-2
Figure 5-2 Transceivers
Garmin G1000 Cockpit Reference Guide for the Cessna Nav III
Outer Marker
Annunciator
Inner Marker
Annunciator
Figure 5-3 Marker Beacon Annunciators on the PFD

Marker Beacon Signal Sensitivity

The HI SENS Key can be pressed for increased marker
beacon signal sensitivity.
Figure 5-4 Marker Beacon
Middle Marker
Annunciator