Re: Best iron rejection........without doubt............
Posted by JB(MS) on 12/10/2005, 6:57 pm, in reply to "Best iron rejection........"
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The best jewelry hunting detector I've used is the Goldtrax Baron, but the Cointrax with version 2.2 chip is right there with it. The only difference is the Goldtrax all metal mode audio has a little more variation. When hunting where gold jewelry is likely to be found I run them in all metal mode, with iron reject on in disc mode. That makes iron and tiny foil bits give a staccato audio response and light the iron LED while other nonferrous metal gives a normal threshold increase. Iron (steel) bottlecaps sometimes give a good audio response in disc mode on both the Cointrax and Goldtrax, but they light the iron LED and in all metal mode give the staccato iron response. No problem with nails. As for the all metal mode audio responses, when I get a normal signal I toggle to disc mode, if there's no signal that means it's a target in the range from tiny foil bits up to just below nickels. That's the hotspot for women and girls rings on the Barons. With the 6X9 widescan coil on the Goldtrax the all metal audio has enough variations I can tell pencil eraser bands and most medium size foil from other nonferrous targets. Rings and nickels give a very hard, very fast off and on response, so do pulltabs darn it. Dimes and quarters give fast, hard response but the audio is smoother than a ring, nickel or pulltab. Tiny gold chains and bracelets, like in the photo, give a staccato response but has what Jbird calls a "flatulent" sound. Took awhile to learn the audio variations but I actually dig less trash when jewelry hunting using the Goldtrax in all metal mode than when jewelry hunting with all the other detectors I have/had in disc mode.  Last jewelry find, a very small 14k bracelet found with the Cointrax with version 2.2 chip in all metal mode. It's right at the breakpoint between iron and tiny foil, gave the "flatulent" staccato audio response on the Cointrax in all metal mode and ID's as iron on the meter in disc mode. It's a lot smaller than it looks in the photo, should have put a coin in for size reference, and would have been missed in disc mode. If not for the audio George designed into the new chip there's no way I would have recovered it with any other detectors I've used except the Goldtrax and maybe the Newforce CS-1220XD.
JB
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