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produced by the GTAx 550 as it scans. Multiple
touches and releases are necessary to increase or
decrease threshold by one Upper Scale segment
at a time.
You can search silently or at any level of constant
sound. It is recommended that you always operate
the instrument at a minimum level of sound. You can
hear the audio increase sharply whenever a target
is encountered.
Also, you will be able to hear even the faint signals
that sometimes occur on tiny targets or deeply
buried coins. When headphones are used, it will
usually be necessary to decrease the threshold level
since sound is more audible through headphones.
After you have made audio adjustments, press
AUDIO to re-enter your previous operating mode.
The
GTAx 550 is equipped with Garrett's exclusive
Belltone Coin Alert
™
that produces a distinctive
ringing tone when a target of high conductivity,
usually a coin, is discovered.