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<blockquote data-quote="mbasko" data-source="post: 491528" data-attributes="member: 4485"><p>The diagram would be more about illustrating the detection fields not being depth comparison correct. </p><p>There are many factors that will affect depth like salt/mineralisation, conductivity, EMI, etc.</p><p>In theory: </p><p>Using the same sized coils in moderate/less mineralised ground the mono should punch deeper & be more sensitive.</p><p>In more mineralised ground where using a DD allows use of normal timing then the same size DD could potentially go as deep or deeper than the mono but with a loss of sensitivity.</p><p>In ground or conditions i.e. salt, EMI where it's very difficult to run a mono at all then the advantages of a DD coil can come into it's own.</p><p>Extra sensitivity & an improved ability to operate using normal timing are the real improvements with these new DD's IMO if they live up to that.</p><p>Detech pretty much kick started it with their 15" DD Ultimate spiral coil so it will be interesting to see how people compare them.</p></blockquote><p></p>
[QUOTE="mbasko, post: 491528, member: 4485"] The diagram would be more about illustrating the detection fields not being depth comparison correct. There are many factors that will affect depth like salt/mineralisation, conductivity, EMI, etc. In theory: Using the same sized coils in moderate/less mineralised ground the mono should punch deeper & be more sensitive. In more mineralised ground where using a DD allows use of normal timing then the same size DD could potentially go as deep or deeper than the mono but with a loss of sensitivity. In ground or conditions i.e. salt, EMI where it's very difficult to run a mono at all then the advantages of a DD coil can come into it's own. Extra sensitivity & an improved ability to operate using normal timing are the real improvements with these new DD's IMO if they live up to that. Detech pretty much kick started it with their 15" DD Ultimate spiral coil so it will be interesting to see how people compare them. [/QUOTE]
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