Nuggetmaster Posted February 22, 2018 Share Posted February 22, 2018 this has been bugging me for awhile, and I can't find any info on it. so I totally get how a bigger mono coil gets better depth over a small mono, but I don't see how there's any gain from going big on a dd, the ground coverage is obviously gonna be more but I don't see how there's much depth gain if any? looking at minelab web page here. thanks https://www.minelab.com/go-minelabbing/treasure-talk/gold-detector-coils-explained-for-minelab-s-gpx-and-gpz-series-detectors 1 Link to comment Share on other sites More sharing options...
Steve Herschbach Posted February 22, 2018 Share Posted February 22, 2018 I am not sure why you think a larger mono gets more depth than a smaller mono but that the same would not be true of a DD. All other things being equal the bigger they are the deeper they go on large targets. Link to comment Share on other sites More sharing options...
phoenix Posted February 22, 2018 Share Posted February 22, 2018 hey Goldgetter. My understanding of it is, and I`m certainly no expert, on a 11" DD, the transmit and receive windings are approx 11 by 5½" each. On a 18" DD the transmit and receive are 18 x 9½" each. Because in the bigger coil the windings are wider, like in a bigger mono coil, the bigger coil will go deeper but wont be as hot on the small stuff. Dave 1 Link to comment Share on other sites More sharing options...
Nuggetmaster Posted February 24, 2018 Author Share Posted February 24, 2018 thanks Link to comment Share on other sites More sharing options...
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