190-01878-05 Rev. A
Garmin GMA 345 3-COM Pilot’s Guide
13
GMA 345 3-COM Audio Panel
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
Action
Key Annunciations
COM Selection:
Toggle
between COM enabled
and COM disabled (the
audio from the current
MIC selected COM is
always enabled and
cannot be disabled).
Press the
corresponding
COM
Key.
COM
Enabled
COM Disabled
MIC Selection:
Selects
the COM used to
transmit during Push-to-
Talk (PTT).
Press the
corresponding
MIC
Key. The last MIC
pressed remains
selected and
deselects all others.
MIC Enabled
MIC Disabled
Transmit Indication:
Audio is sent from the
corresponding Crew MIC
to the selected COM. *
Push-to-Talk (PTT)
keyed.
MIC in-key
annunciator flashes.
Summary of Contents for GMA 345 3-COM
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