190-01134-12 Rev. DGarmin GMA 350 Pilot’s Guide12GMA 350 Audio PanelTurning Marker Beacon Audio OnWith the MKR/MUTE annunciator off, press the MKR/MUTE Keyto activate marker beacon audio and illuminate the MKR/MUTEannunciator.Muting Marker Beacon AudioDuring marker beacon audio reception, press the MKR/MUTE Keyto mute the audio. The MKR/MUTE annunciator remains lit, but thecurrent marker tone is silenced. Audio muting deactivates automaticallyand marker beacon audio is heard when the next marker beacon signalis received.Deselecting Marker Beacon AudioTo deselect marker beacon audio, press the MKR/MUTE Key twiceduring marker beacon reception or once if a marker beacon signal isnot detected.