help with xterra 705 threshold ??

diggin junk

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Jul 25, 2013
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I got a new xterra 705. I am starting to understand it a little and digging a lot less junk but can someone break down the threshold idea for me. I just don't understand it. I know it is the humming noise the machine makes and the humming noise blanks out if it crosses over a target that has been notched out but I don't see how that helps you at all. because you notched out that target for a reason so you do you care if the coil crosses of that target.
I don't know I am confused if someone can explain it to me and explain to me how to adjust it correctly I think I could improve my metal detecting
thanks in advance
 
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