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Gold Prospecting
Metal Detecting for Gold
Difference between Mono and DD coils? When to use?
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<blockquote data-quote="condor22" data-source="post: 73357" data-attributes="member: 1932"><p>From my perspective, if you want to cover a larger area, quicker, to see if there is anything there a DD will not require as much overlap and is quicker than a Mono. However as stated it doesn't go quite as deep for the same size coil and is not quite as sensitive.</p><p></p><p>If you get a couple of hits, then that's the time to swap to a Mono and do it slower, deeper and with more sensitivity.</p><p></p><p>Bare in mind, a larger coil will get bigger pieces, deeper, but may miss the shallow smaller bits.</p><p></p><p>If you really want to cover a patch and it's open enough to do so;</p><p></p><p>Grid the area and start with a 14 to 198" DD or the largest you have, if you find something then,</p><p>Swap to the largest Mono you have and go over the area again,</p><p>Finally swap to a smaller Mono, like a 8" or an equivalent elliptical coil and go over the area again. Takes the longest time to do properly.</p><p></p><p>It really is down to how thorough and how much time you want to spend, as well as what you have available in the coil ammo box.</p></blockquote><p></p>
[QUOTE="condor22, post: 73357, member: 1932"] From my perspective, if you want to cover a larger area, quicker, to see if there is anything there a DD will not require as much overlap and is quicker than a Mono. However as stated it doesn't go quite as deep for the same size coil and is not quite as sensitive. If you get a couple of hits, then that's the time to swap to a Mono and do it slower, deeper and with more sensitivity. Bare in mind, a larger coil will get bigger pieces, deeper, but may miss the shallow smaller bits. If you really want to cover a patch and it's open enough to do so; Grid the area and start with a 14 to 198" DD or the largest you have, if you find something then, Swap to the largest Mono you have and go over the area again, Finally swap to a smaller Mono, like a 8" or an equivalent elliptical coil and go over the area again. Takes the longest time to do properly. It really is down to how thorough and how much time you want to spend, as well as what you have available in the coil ammo box. [/QUOTE]
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Gold Prospecting
Metal Detecting for Gold
Difference between Mono and DD coils? When to use?
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