Sweeping The Searchcoil - Garrett AT Gold Owner's Manual

bench test with an iron bottle cap. First, set the detector to
the All MeTAl Mode, switch off Iron Audio and pass the
bottle cap across the searchcoil at a distance of 3 to 4 inches
(8–10cm). Note that the bottle cap's flat surface gives a
Digital Target ID reading generally in the 40–60 range.
remaining in the All MeTAl Mode, switch on the Iron
Audio feature and set IrON DISC at 35. Pass the bottle cap
completely across the searchcoil again and and listen for the
distinctive low–Medium–low response indicating an iron
target.
This ability to check iron targets while operating in a true
All MeTAl Mode is a Garrett exclusive feature that helps
make the AT Gold such a powerful detector.
Next, switch to the DISC 1 Mode, set IrON DISC to 35
and switch off the Iron Audio feature. Pass the bottle cap
across the coil again and notice the subtle breaks and
inconsistencies of the target response, indicating it might be
made of iron. Pass a non-ferrous target such as a coin or gold
ring across the coil and note its clean tone in comparison to
that of the bottle cap. remaining in DISC 1 Mode, with IrON
DISC at 35, switch on the Iron Audio feature. Pass the bottle
cap completely across the coil again and note the low–High–
low response that is unmistakably iron. Again, pass the non-
ferrous target across the coil to compare its audio to that of
the bottle cap.
Final tip: record the results of your bench tests and refer
to them when hunting in the field. knowledge of the audio
characteristics and the Iron Audio feature of the AT Gold can
reduce the amount of trash targets that are dug.
40 Garrett Metal Detectors

SWeePING THe SeArCHCOIl

• Keep your searchcoil at a constant height and parallel to
the ground at all times for best detection results. Do not lift
or tilt the coil at the end of swings.
• Walk slowly as you scan your searchcoil in a straight line
from side to side at a speed of about 3 feet (1 meter) per
second. Advance the searchcoil about half the length of the
searchcoil at the end of each sweep.
Overlap Swing
by 4" (10 cm)
/
3ft (1m) sec
/
3ft (1m) sec
In order to fully search an area, overlap the swings of your searchcoil by
half the length of the coil (about 4 inches). Sweep the searchcoil in a
straight line or with a slight arc at a sweep speed of about 3ft/sec.
CORRECT
SWING
INCORRECT
SWING
/
3ft (1m) sec
Overlap Swing
by 4" (10 cm)
AT Gold ™
41