My Garmin GNA-340 has been trouble-free, but if I were buying now, I would probably spring for a PS Engineering unit. Lots of features have become available in audio panels since the 340 came out. But either Garmin or PS Engineering units should be very reliable.. Tens of thousands of Garmin GNS 430 and 530 navigators were paired with Garmin's GMA 340 audio panel—a generally good, reliable audio system with built-in intercom and wired entertainment input. But late last year, Garmin announced (via Service Advisory 21115, Rev. C) that popular flavors of the GMA 340 have reached the end of their service life.
The GMA 340 audio panel offers the latest in digital features to reduce cockpit workload and improve communication. Skip navigation links.. Garmin Technology Integration Software Updates System Builder. Communities . Garmin Pros ActiveCaptain. SAVE ON SELECT FUSION® MARINE AUDIO PRODUCTS.. The lamp and audio keying for ILS approach operation are summarized below: The marker beacon audio level is aligned at the factory to produce its rated audio output. However, the output level is adjustable by your avionics installing agency. The GMA 340's marker beacon receiver controls are located on the left side of the front panel (1.
