Junk Targets - Garrett Graphic Target Profiling 1350 Owner's Manual

JUNK TARGETS

The GTP 1350's factory default COINS mode will
not audibly respond to most junk targets. It may,
however, respond with a signal that is not as clear
or sharp as that of a coin signal. It is recommended
that before digging these "blips", the region where
the Target ID cursor is illuminated on the Upper
Scale is verified. Often, a junk target has been found
when a Target ID cursor illuminates irregularly.
It is not unusual for a junk target, such as an
aluminum soft drink can to give an audio signal
indicating that a good target has been discovered
due to its conductivity. However, the Profiling
Display can aid in the identification of such targets
before you dig.
Rusty iron targets may cause jumpy or non-
repeatable ID readings.
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Garrett Metal Detectors