Unleash the Power of Notch Filtering: The Ultimate Tool for Discriminating Against Unwanted Signals in Metal Detecting

Notch Filtering: An Overview

As a metal detectorist, you may find yourself in environments where there are different types of metals present. Some of these metals may be desirable for your search while others may not be. This is where notch filtering comes into play.

Notch filtering is a feature available on most modern metal detectors that allows the user to select specific target IDs to reject or accept while searching. It works by creating a “notch” around a certain range of target IDs and rejecting any targets within that range.

For example, if you are detecting on a beach and want to avoid detecting pull tabs from aluminum cans, you can create a notch around the target ID range associated with them. This way, your metal detector will still detect other desirable targets such as coins and jewelry but will ignore pull tabs.

It’s important to note that notch filtering should be used cautiously as it can also reject good targets if the user sets the notch too wide or narrow. It’s essential to understand the target ID ranges associated with different types of metals before using this feature.

Some metal detectors have pre-set notches for common trash items such as bottle caps and nails which makes it easier for users who are just starting out with this feature.

In conclusion, Notch filtering is an excellent tool for discriminating against unwanted signals when hunting in areas with mixed metallic junk but understanding how it works and the importance of proper settings selection is crucial. With practice and experience using this function, one can significantly improve their skills at finding only valuable treasures without wasting time digging up undesirable targets.