Audio Signal Boost Toggle - Whites GMT Manual

Chapter 4 GMT Controls
AUDIO SIGNAL BOOST
BATTERY TEST
TOGGLE
10

Audio Signal Boost Toggle

The AUDIO SIGNAL BOOST toggle switch boosts
the sound (makes it louder) to help "hear" very deep
or small nuggets. AUDIO SIGNAL BOOST only
amplifies the sound AFTER processing thus it does
not cause signal overload. AUDIO SIGNAL
BOOST increases the chance of finding those tiny
flakes embedded in the cracks of bedrock and the
deeper, smaller targets to be found in dry washes
and tailings in the desert.
The center position or Initial Setting position
provides NO AUDIO SIGNAL BOOST. The FOR-
WARD position provides a 4X boost in the loudness
of the audio signal. The PULLED or spring loaded
position is used for BATTERY CHECK.
AUDIO SIGNAL BOOST is normally used on a
temporary or as-needed basis. Since it will also
boost the loudness of the background Threshold
"hum", it could mask other signals if used continu-
ously. If you are in an area that would benefit from
a continuous AUDIO SIGNAL BOOST, an adjust-
ment of the Threshold setting may be required.