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Date Posted: 17:11:02 07/10/02 Wed
Author: Reg
Subject: Re: "Hot Rock" controversy: Some hotrocks and groundbalance
In reply to: jim straight 's message, ""Hot Rock" controversy: Some authorities claim sometimes they cannot be groundbalanced out---" on 00:32:54 07/07/02 Sun

Hi Jim,

Your question about some hotrocks may not be able to be ground balanced out, can take on a little different meaning.

First, most ground balancing detectors usually are able to "eliminate" the audio change one might hear from most "hotrocks" when the hotrock is a predetermined distance from the coil.

However, when that distance between the coil and the rock changes, so does the "hotrock" balance. George Payne referenced something he calls "foldover" where as a strong ferrite ground condition (or hotrock) is approached, the signal actually folds over and instead of the signal getting quieter as the ground is approached, it now becomes louder. At some point in between, the ferrite matrix is balanced out.

Now, it is possible that those who claim certain hotrocks cannot be ground balanced out are referring to this condition, meaning the rock is readily detectable even after an initial ground balancing just by moving the coil closer to the rock.

Reg

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