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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. *
Split-COM Mode: The pilot
transmits on COM1 and the
copilot transmits on COM2
independently.
* The pilot has priority when transmitting in the case that both crew members attempt to transmit
on the same COM.
190-01879-10 Rev. F
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.
Simultaneously
press COM1
MIC and
COM2 MIC
keys.
Transceiver Key Functions
Garmin GMA 245 Pilot's Guide
GMA 245 Audio Panel
Key Annunciations
COM Enabled COM Disabled
MIC Enabled
MIC Disabled
MIC in-key
annunciator
flashes.
13
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