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Metal Detectors
Minelab
Minelab X-terra 705 General Tips, Advice, Questions
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<blockquote data-quote="Goldpick" data-source="post: 195927" data-attributes="member: 1695"><p>Rusty iron can give off high tone falsing on most detectors, though often non repeatable ID's and the numbers can bounce from a negative iron ID straight up to the high 40's range. It is often called the "wrap around effect", and is the culprit is supposedly the halo given off by rusty objects in the soil. I did read that you can notch out a couple of the very top ID numbers to reduce the amount of falsing, and also that the lower frequency coils tend to be less prone to the falsing. Obviously you don't want to notch out too many high range numbers, as you may start missing high conductor coins like large silvers. </p><p></p><p>Probably best course of action is to tune your ears to ignore the non repeatable spikes, as they are often brief and will not repeat on each swing of the coil vs the solid repeatable tone/ID of a coin. </p><p></p><p>Also running a too higher sensitivity setting can make the falsing more pronounced, so maybe wind the setting back a bit to see if it helps. I get the same spikes on my Etrac, and reduced sensitivity does seem to help in areas full of rusted iron. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="Goldpick, post: 195927, member: 1695"] Rusty iron can give off high tone falsing on most detectors, though often non repeatable ID's and the numbers can bounce from a negative iron ID straight up to the high 40's range. It is often called the "wrap around effect", and is the culprit is supposedly the halo given off by rusty objects in the soil. I did read that you can notch out a couple of the very top ID numbers to reduce the amount of falsing, and also that the lower frequency coils tend to be less prone to the falsing. Obviously you don't want to notch out too many high range numbers, as you may start missing high conductor coins like large silvers. Probably best course of action is to tune your ears to ignore the non repeatable spikes, as they are often brief and will not repeat on each swing of the coil vs the solid repeatable tone/ID of a coin. Also running a too higher sensitivity setting can make the falsing more pronounced, so maybe wind the setting back a bit to see if it helps. I get the same spikes on my Etrac, and reduced sensitivity does seem to help in areas full of rusted iron. :) [/QUOTE]
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Metal Detectors
Minelab
Minelab X-terra 705 General Tips, Advice, Questions
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