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Metal Detectors
QED
QED users - how are you faring?
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<blockquote data-quote="Guest" data-source="post: 373028"><p><strong>All</strong> Gb pi detectors that use subtractive null summation methods to GB will have an <strong>electronic hole</strong> (where the target TC is close to or similar to the ground Tc)</p><p>ie some nuggets of a particular size and shape will be very poorly detected if at all over some ground. The smooth timings on the gpx is a case in point where nuggets with long time constants may suffer a depth loss of up to 50% compared to other timings. The QED electronic hole is probably around nuggets of 10 grams but this will depend on the ground mineralisation and where the gb, bias,gain and mode are set and the coil size.</p><p>What size was the nugget that the QED could not detect compared to the gpx 4000 and what were the QED settings you were using?</p><p>What were the settings on the gpx 4000?</p></blockquote><p></p>
[QUOTE="Guest, post: 373028"] [b]All[/b] Gb pi detectors that use subtractive null summation methods to GB will have an [b]electronic hole[/b] (where the target TC is close to or similar to the ground Tc) ie some nuggets of a particular size and shape will be very poorly detected if at all over some ground. The smooth timings on the gpx is a case in point where nuggets with long time constants may suffer a depth loss of up to 50% compared to other timings. The QED electronic hole is probably around nuggets of 10 grams but this will depend on the ground mineralisation and where the gb, bias,gain and mode are set and the coil size. What size was the nugget that the QED could not detect compared to the gpx 4000 and what were the QED settings you were using? What were the settings on the gpx 4000? [/QUOTE]
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Metal Detectors
QED
QED users - how are you faring?
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