Dd Depths

[Nuggetmaster]

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

 

[Steve Herschbach]

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.

 

[phoenix]

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

[Nuggetmaster]

thanks