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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: 352074" data-attributes="member: 1695"><p>Glad you are chuffed with your new purchase, should provide many hours of fun. With respect to the concentric waterproof coil, the low 7.5kHz frequency is more suited to high conductors like silver & copper coins, and not so sensitive to low conductors like small nuggets or thin non-ferrous metals. The low frequency may also help to cope with mineralisation, though concentric coils aren't usually favoured for nugget detecting, unless used in conjuction with some of the higher frequency vlf gold detectors (Gold Racer, Goldbug 2).</p><p></p><p>Don't forget that you are not limited to using Minelab coils with the 705, companies like NEL coils offer a wide range of waterproof coils with various frequencies on offer, plus multifrequency coils that allow you to change frequency to suit the type of detecting you are doing. </p><p></p><p>Despite that, don't let that put you off from having a go - there have been cases where low frequency detectors like the Ace 250 have by chance picked up on reasonably small nuggets in the past, plus it should provide a good learning experience on what the detector/coil combinations are capable of. <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: 352074, member: 1695"] Glad you are chuffed with your new purchase, should provide many hours of fun. With respect to the concentric waterproof coil, the low 7.5kHz frequency is more suited to high conductors like silver & copper coins, and not so sensitive to low conductors like small nuggets or thin non-ferrous metals. The low frequency may also help to cope with mineralisation, though concentric coils aren't usually favoured for nugget detecting, unless used in conjuction with some of the higher frequency vlf gold detectors (Gold Racer, Goldbug 2). Don't forget that you are not limited to using Minelab coils with the 705, companies like NEL coils offer a wide range of waterproof coils with various frequencies on offer, plus multifrequency coils that allow you to change frequency to suit the type of detecting you are doing. Despite that, don't let that put you off from having a go - there have been cases where low frequency detectors like the Ace 250 have by chance picked up on reasonably small nuggets in the past, plus it should provide a good learning experience on what the detector/coil combinations are capable of. :) [/QUOTE]
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Metal Detectors
Minelab
Minelab X-terra 705 General Tips, Advice, Questions
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