Basics Of Metal Detecting; Ground Minerals - Fisher F19 Owner's Manual

THE BASICS OF METAL DETECTING
A hobby metal detector is intended for locating buried metal objects. When
searching for metals, underground or on the surface, you have the following
challenges and objectives:
1. Ignoring signals caused by ground minerals.
2. Ignoring signals caused by metal objects that you do not want to find,
such as pull-tabs.
3. Identifying a buried metal object before you dig it up.
4. estimating the size and depth of objects to facilitate digging them up.
5. e liminating the effects of electromagnetic interference from other
electronic devices.
Your F19™ metal detector is designed with these points in mind.

1. Ground Minerals

All soils contain minerals. Signals from ground minerals can interfere with
the signals from metal objects you want to find. All soils differ, and can
differ greatly, in the type and amount of ground minerals present. You
therefore want to calibrate the detector to the specific ground conditions
where you are hunting. The detector incorporates both automated and
manual ground balancing features which will eliminate false signals from
most types of soils. To maximize the detector's target identification
accuracy and depth of detection, use the Gr OUND Gr AB
COMPUTe r IZe D Gr OUND BALANCING function to calibrate the
detector to the ground where you are searching. See the section on
Gr OUND BALANCING for details.
10
The Basics continued on next page
®