Nokta detectors Fors Gold - Manual (Page 24)

ROCK IRON
Brown Area (Target ID: 0-16): Highly mineralized soil and positive or negative hot rocks.
Blue Area (Target ID: 16-40): Ferrous metals (Gold under rocks can also fall into this
category. For more details, please refer to the HOT ROCKS and SEARCHING IN ROCKY
AREAS and METALS UNDER HOT ROCKS sections on page 26-28).
Yellow Area (Target ID:40-70): Mostly gold, folio, soda cans, pull-tabs, some coins etc.
Red Area (Target ID:70-99): Copper, brass, aluminum, silver, some coins etc.
This data may vary based on the field conditions.
As mentioned before, ID Masking is the ability of the device to ignore (not produce a
warning tone or ID) unwanted targets. ID Masking is not active in the General Search
mode. ID Masking values of the discrimination modes are preset by the factory. If you want,
you can change the ID Masking values in the menu.
To change the ID Masking value, first choose the ID Masking option in the menu and using
the + or - switches, either increase or decrease it to the number you have determined.
Please keep in mind that certain metals, other than the ones you are masking, will also be
lost or their signal strength will diminish resulting in loss of depth.
For example; when you set the ID Masking to 40, the device will ignore all signals with IDs
less than 40 and will not produce a warning tone. The device will also miss gold nuggets
under rocks of which the received IDs are less than 40.
To give another example, in the case of receiving multiple IDs - let's say 35 and 55 - due to
target orientation or metal property, if you mask the IDs up to 40, 35 will fall in the masked
range so the signal strength may diminish and depth may decrease.
TARGET ID and ID MASKING
FORS / Page 23
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