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Whites Tdi Pro Standard vs Whites Tdi Pro Modified.
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<blockquote data-quote="karelian65" data-source="post: 534361" data-attributes="member: 9224"><p>Repeated the air test with the Digger 14 x 8 mono coil. This time I got the standard machines gain to 5, the modified unit got to 7 so coil size seems to be a factor here..</p><p>Both machines were on pulse of 10, ground balance was off, conductivity was in all.</p><p></p><p>Stock machine 1 grain gold ingot 8cm, 0.5g gold coin 31cm, Half Sovereign 42cm.</p><p>Modified unit 1 grain gold ingot 9cm, 0.5g gold coin 33cm, Half Sovereign 45cm.</p><p></p><p>So a pattern is emerging, the modified machine has a smoother threshold, allows more gain, enjoys a bit of extra sensitivity, regardless of coil size or target size etc, that small margin of performance persists. When circumstances allow I will take the machines into the goldfields and conclude with some in ground testing in mineralized soils.</p><p><img src="https://www.prospectingaustralia.com/forum/img/member-images/9224/1580025039_img_1757_edited.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /><img src="https://www.prospectingaustralia.com/forum/img/member-images/9224/1580025053_img_1764_edited.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="karelian65, post: 534361, member: 9224"] Repeated the air test with the Digger 14 x 8 mono coil. This time I got the standard machines gain to 5, the modified unit got to 7 so coil size seems to be a factor here.. Both machines were on pulse of 10, ground balance was off, conductivity was in all. Stock machine 1 grain gold ingot 8cm, 0.5g gold coin 31cm, Half Sovereign 42cm. Modified unit 1 grain gold ingot 9cm, 0.5g gold coin 33cm, Half Sovereign 45cm. So a pattern is emerging, the modified machine has a smoother threshold, allows more gain, enjoys a bit of extra sensitivity, regardless of coil size or target size etc, that small margin of performance persists. When circumstances allow I will take the machines into the goldfields and conclude with some in ground testing in mineralized soils. [img]https://www.prospectingaustralia.com/forum/img/member-images/9224/1580025039_img_1757_edited.jpg[/img][img]https://www.prospectingaustralia.com/forum/img/member-images/9224/1580025053_img_1764_edited.jpg[/img] [/QUOTE]
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Metal Detectors
Whites
Whites Tdi Pro Standard vs Whites Tdi Pro Modified.
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