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Date Posted: 20:21:36 08/03/02 Sat
Author: Ralph
Subject: Curious......
In reply to: Reg 's message, "Re: Air tests vs. in-ground tests" on 18:47:05 08/03/02 Sat

Hi Reg,

Did you happen to do any testing on individual hot rocks vs. small nuggets to determine if the signal strength of the rock had to equal or exceed that of the nugget to completely blank the nugget signal ? I've done some testing of the X-5 with larger nuggets and hot rocks, and with the larger pieces at least, that seems to be the case.

I think some of our thoughts on nugget detecting using the discrimination mode may be wishful thinking in anything other than mild to moderate (and consistent) ground conditions with minimal hot rocks. Anything else is more likely to cause the problems you mention due to the discrimination circuits blanking the good with the bad. More testing to do on these particular machines to determine just what their capabilities are, but so far the small target sensitivity of both exceeds most any machine out there. Whether that will equate to some level of increased performance along the lines of this type of hunting in the discriminate mode...... well, we're hopeful. Perhaps a little improvement in gain coupled with some tweaking of the discrimination circuits as you described will do the trick.

Ralph

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