User's Manual

190-01134-12 Rev. G Garmin GMA 350/350c Pilot’s Guide
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GMA 350/350c Audio Panel
Volume/Squelch Control
Manual Squelch Annunciator;
Off for Automatic Squelch, On
for Manual Squelch
Relative Volume/
Squelch Scale
Volume or Manual Squelch Cursor
SPEAKER
All of the radios can be heard over the cabin speaker. Pressing the SPKR
Key selects and deselects the cabin speaker. Speaker audio is muted when
the PTT is pressed. Certain aural alerts and warnings (autopilot, traffic,
altitude) are always heard on the speaker, even when the speaker is not
selected.
Speaker Key
Passenger address Mode (Pa Mode)
Press and hold the SPKR Key for 2 seconds to initiate Passenger
Address Mode. PA Mode is annunciated by a rapid blinking of the
SPKR annunciator. When in PA Mode the crew can use the PTT “Push-
to-Talk” button to deliver announcements over the speaker, to the
passenger headsets, or both depending on configuration.