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Metal Detectors
Minelab
Minelab GPZ7000 information and questions
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<blockquote data-quote="mbasko" data-source="post: 367444" data-attributes="member: 4485"><p>You may be better looking at a GPX4800 or 5000.</p><p>These have a powerful coin/relic timing for low mineralised ground & with the use of a large DD coil (~18">) will allow some discrimination using iron reject for sites with a large amount of iron trash like the nails you describe. IMO in lower mineralised ground there would be no real benefit of using the GPZ that doesn't allow any form of discrimination at all & probably won't punch any deeper than a PI in lower mineralised ground.</p><p>Another option could be the Whites TDI Pro which using the hi/low conductivity switch will also allow some discrimination even with mono coils.</p></blockquote><p></p>
[QUOTE="mbasko, post: 367444, member: 4485"] You may be better looking at a GPX4800 or 5000. These have a powerful coin/relic timing for low mineralised ground & with the use of a large DD coil (~18">) will allow some discrimination using iron reject for sites with a large amount of iron trash like the nails you describe. IMO in lower mineralised ground there would be no real benefit of using the GPZ that doesn't allow any form of discrimination at all & probably won't punch any deeper than a PI in lower mineralised ground. Another option could be the Whites TDI Pro which using the hi/low conductivity switch will also allow some discrimination even with mono coils. [/QUOTE]
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Metal Detectors
Minelab
Minelab GPZ7000 information and questions
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