MINELAB 18" MONO LOOP ROUND COMMANDER COIL FOR GPX, GP, SD, VERY DEEP DETECTION - $441 - (New York, NY)
18-inch Monoloop Commander CoilThe 18" Monoloop coil is the deepest seeking of all the Commander coils. It is not sensitive to very small gold nuggets, but has great ground coverage and finds very deep gold.Part No. 3011-0075 COMES COMPLETE WITH COIL COVER AND HARDWARE Why do most prospectors use Monoloop coils?Greater depth compared to same sized Double-D coil.Increased sensitivity to small targets – particularly at depth.Sharper target signal response.Can employ a faster sweep speed – great for patch hunting.Work well with “smooth” timings: Fine Gold, Enhance, Sensitive Smooth.Cone shaped detection field is of uniform shape, regardless of sweep direction – excellent for detecting around obstacles and in thick scrub.High sensitivity near the rim of the coil, allows you to use the edge of the coil to pin-point shallow targets.Elliptical Mono coils start to share some characteristics of Double-D coils, particularly greater ground coverage at depth, and a sharper response on borderline targets. Large CoilsBasically anything larger than a 16” round, which include 18” rounds, 20” round, 22” round, 24” ellipticals, etc. Due to their physical size, large coils are generally the heaviest coils, particularly solid designs, and difficult to work in cluttered terrains, so are best put to use in more open ground. Their main purpose is to achieve maximum depth on larger nuggets. As the detection field is less dense close to the coil, but spread out over a bigger area, this results in a slight loss of near surface sensitivity, which can actually help to reduce the signal response you may get from hot rocks and hot pockets of ground. The other benefit of large coils is that they usually make you improve your technique, by sweeping the coil slower and more methodically, and moving large obstacles out of the way, which can lead to more gold finds.
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From ebay.com - 1 month ago