Garmin's
GMA 347 Audio Panel web site
The GMA 347 audio panel adds a digital voice recorder,
automatic squelch and full-duplex telephone interface to the GMA
340. These features streamline cockpit management, enhance flight
safety and improve communications between flight crews, ground
controllers and passengers.
Never Miss a Message
GMA 347’s digital voice recorder helps you manage
the demands of a busy cockpit. The automatic voice recorder continuously
captures the last two and one-half minutes of audio switched through the
panel. So if you ever miss an assigned frequency or part of a clearance,
simply press the “Play” button to recall the message for review.
Filter Static and Interference
GMA 347's automatic squelch option makes your entire
audio experience quieter and clearer. This option filters out radio
static and interference. Yet, for those situations when faint, far-off
audio signals can be blanketed by ambient noise, the 347 offers manual
squelch adjustment.
Make Private Phone Calls
In addition, GMA 347 has a full-duplex telephone
interface with intercom isolation and disable capability. This feature
allows private telephone calls by the pilot or copilot, or multi-party
calls with crew and/or passengers. GMA 347 also comes with three more
unmuted, unswitched inputs with individual volume control for additional
audio capabilities
Operate with Ease
With convenient, LED-illuminated button controls for
audio selection — as well as split comm capability for pilot and
co-pilot, GMA 347 is easy to use. If the GMA 347 ever needs to be
removed for service, a “configuration module” makes sure that
previous audio settings are retained in the unit.
GMA 347: Technology that has everyone talking