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Metal Detectors
Whites
Whites detectors compared to others.
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<blockquote data-quote="Reg" data-source="post: 187509" data-attributes="member: 3659"><p>"The autotune circuitry limits the size of coil that works best. " Now, this doesn't mean large coils won't work. In fact, Jimmy Sierra sells one that is a 20" coil for those of you interested in large coils. Also, I was told it will work on the SPP.</p><p></p><p><a href="http://jimmysierra.com/sierragrandeloop.html" target="_blank">http://jimmysierra.com/sierragrandeloop.html</a> </p><p></p><p>What happens when you use a real large coil is the autotune feature will cause a noticeable depth loss, especially on small objects when trying to sweep slowly. So, the trick in using a larger coil on the TDI series is to sweep faster. Use a smaller coil like a 8" by 12" folded mono and maximum depth on small gold is enhanced by sweeping slower. </p><p>The key is to find the ideal speed on any coil used plus know what is lost and what is gained.</p><p></p><p>Reg</p></blockquote><p></p>
[QUOTE="Reg, post: 187509, member: 3659"] "The autotune circuitry limits the size of coil that works best. " Now, this doesn't mean large coils won't work. In fact, Jimmy Sierra sells one that is a 20" coil for those of you interested in large coils. Also, I was told it will work on the SPP. [url]http://jimmysierra.com/sierragrandeloop.html[/url] What happens when you use a real large coil is the autotune feature will cause a noticeable depth loss, especially on small objects when trying to sweep slowly. So, the trick in using a larger coil on the TDI series is to sweep faster. Use a smaller coil like a 8" by 12" folded mono and maximum depth on small gold is enhanced by sweeping slower. The key is to find the ideal speed on any coil used plus know what is lost and what is gained. Reg [/QUOTE]
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Metal Detectors
Whites
Whites detectors compared to others.
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