Listening To The Audio Channel; Automatic Morse Code Decode/Display - Garmin SL30 Pilot's Manual

Nav/comm transceiver

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Advanced Operation

Nav Mode

Listening to the Audio channel

The audio for the active Nav channel is toggled between modes using the ID button. The

annunciator above the button will light while Nav audio is activated, and the detected audio

signal will be sent to the Nav audio output circuit. Nav audio may also be mixed with the

Com audio output, if selected in the System mode. When you are monitoring a VOR, Nav

audio is suspended.

There are three modes for the Nav audio. Press the ID button to start the ID mode.

"IDENT" will be displayed for three seconds. The Morse code tones sent over the VOR/Local-

izer channels will be heard.

If the ID button is pressed a second time. " VOICE " will be displayed for three seconds.

The Morse code tone volume will be reduced so you can hear the voice transmission more

clearly.

Press ID again to turn the audio and ID annunciator off.

The last audio output selection is kept in memory until you change it, even when the

SL30 is powered off. Using this feature, you may leave the audio enabled and then control it

by an external audio panel.

The Morse code identiﬁer will not be available until two messages have been successfully

received, which may take from 15-60 seconds depending on conditions. When no voice is

present on the station, the Morse code identiﬁer is decoded correctly at least 99.5% of the

time. If the station is transmitting voice along with the Morse Code identiﬁer, the probability

of the SL30 to decode the identiﬁer drops to 95%. Voice or poor reception (such as the sta-

tion is far away) may delay or inhibit the automatic decode function.

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