Enabling/Disabling Monitored Com Muting - Garmin GMA 345 3-COM Pilot's Manual

During Split-COM transmission, the lower numbered COM MIC
annunciator flashes when the pilot' s microphone PTT is pressed. The
higher numbered COM MIC annunciator flashes when the copilot' s
microphone PTT is pressed.

ENABLING/DISABLING MONITORED COM MUTING

Press and hold COM1, COM2, or COM3 to enable/disable monitored
COM muting during reception of audio from the COM radio selected for
transmission. The aural message "Monitor Mute Enabled/Disabled" is
heard.
Function
COM Selection: Toggle
between COM enabled
and COM disabled (the
audio from the current
MIC selected COM is
always enabled and
cannot be disabled).
MIC Selection: Selects
the COM used to
transmit during Push-to-
Talk (PTT).
Transmit Indication:
Audio is sent from the
corresponding Crew MIC
to the selected COM. *
190-01878-05 Rev. A
Action
Press the
corresponding COM
Key.
Press the
corresponding MIC
Key. The last MIC
pressed remains
selected and
deselects all others.
Push-to-Talk (PTT)
keyed.
Garmin GMA 345 3-COM Pilot's Guide
GMA 345 3-COM Audio Panel
Key Annunciations
COM
Enabled
MIC Enabled
COM Disabled
MIC Disabled
MIC in-key
annunciator flashes.
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