What is Iron Masking and why is important to know more about it for a good research
The proximity between a ferrous and a non-ferrous target
Even for the most experienced metal detecting users, accustomed for some time to take up their metal and their search coil, the phenomenon of Iron Masking, can be not completely clear and, sometimes, make it difficult to identify a search target.
What in jargon we call "Iron Masking" is that phenomenon that occurs when you have a ferrous target, which we are discriminating, quite close to a non-ferrous and potentially desirable one, such as maybe a coin.
Basically, sweeping on it, the metal detector loses sensitivity for an instant due to the iron discrimination process and maybe it is not reactive enough to correctly detect the non-ferrous object..
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Legend WHP
Garrett AT Pro International
This happens especially when the ferrous target is intercepted first and then the non-ferrous one. In this case, if the two objects are close enough, the ferrous object is said to "mask" or hide the non-ferrous one, preventing us from detecting it.
If, on the other hand, the first target is the non-ferrous one and then there is the ferrous one, the detector could start to signal the target, but due to the presence of the iron next to it, the signal will be "broken", "interrupted" or so short as to be easily confused with a false signal.
Some metal detectors allow to increase the so-called "Recovery Speed" or the speed with which after discrimination the machine returns to be fully operational, sometimes allowing us to be able to hear the non-ferrous objects next to the ferrous ones.
The Iron Masking is a phenomenon that with the advance of the experience can be easily understood and that, for this reason, should not scare budding seekers and those who have just started this type of hobby, as with time you learn to know it and, in some way, to get around it.
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