nulling

[Anonymous]

I have a question that I hope someone can answer.I'm going over a very old area around a house which had been a place where coal ash was dumped for at least 200 years. I have been using iron mask with -10 fast, sometimes audio 1, and sometimes with the sensitivity set very low.I'm not getting a threshhold, no matter how low I set the sensitivity. In pinpoint, however, I am able to isolate individual iron? signals, which are not spaced so very close together to give me this constant null. I'm assuming that this must be a major hot rock situation, but would welcome any advice. Thanks, John

 

[Anonymous]

content..here in bama my machine will rarely run a constant threshold around an old homesite(nails ,what have you).I never turn it up however.If I have any doubt about whether everthings ok (ie nulls or otherwise) i pick the coil up and there is the threshold.Have any question!!, throw a penny down or whatever and check and see if th machine will see it with the null background..It will//hope this helps I also prefer audio 1,,trash gives a quavering signal..different from coins..no xpert here..hope this helps charlie <IMG SRC="/forums/images/csflag.gif" BORDER=0 ALT="::">