Posted by JB(MS) on 7/19/2009, 9:44 pm, in reply to "thin gold chains in sand"
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A bigger coil will be less sensitive to thin gold chains, and the Tesoro cleansweep probably won't see them at all. Of all the too many detectors I've had the best for hitting thin gold chains was a 17khz C-Scope/Newforce 1220-XD in the audio-meter mode but never used it in a salt water environment, or anywhere except in virtually mineral free ground. The 1220-XD has four modes, two TR disc modes, a preset ground balanced VLF all metal mode and the audio-meter mode. With the standard 8 inch coil and running in the audio-meter mode it would hit thin chains in mineral free sand almost twice as deep as anything else I've used, including the Tesoro LST I had and Goldtrax Baron I still have, and that wasn't very deep. The 1220-XD's have an almost infinite range of tones in the audio-meter mode, from a low guttural growl for iron to an almost our of hearing range high tone scream for large or shallow high conductive targets, and they have a good/bad type meter that goes left on ferrous targets and right on nonferrous targets. On thin gold chains the audio would increase slightly in volume without changing tones, and the meter would deflect slightly to the left. The 1220-XD was hot on gold jewelry and was a fun detector to use, always regretted letting it go, but it's doubtful it would work in or around saltwater.
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