Garrett Metal Detector GTI 1500 Owner's Manual page 71

Gold Stinger is recommended.
It must be emphasized, however, that
prospectors, when using the GTI 1500 or
any other quality detector usually prefer to
operate in the Zero Discrimination detec-
tion mode. When prospecting, discrimi-
nation may reduce the amount of small
nuggets found, but some areas contain so
much iron trash that a small amount of
discrimination becomes highly desirable,
even necessary. You may want to estab-
lish a special "notch" to avoid a particular
junk metal target that is proving especially
bothersome.
Hard work, patience and research are
three of the keys to success in hunting
for gold with a metal detector. Research
is important because it is vital that gold
always be sought in areas where it is
known to exist.
For literature that will explain more about
gold hunting see the Recommended
Reading section in this Owner's Manual.
Graphic Target Imaging 1500 - 71