Doing the Wrap-Around

9 Apr

I have been going on and on about how I am digging iron signals and finding stuff that is not iron. I was digging around an old park yesterday at lunch happily unearthing rusted nails when it dawned on me that I have not been 100% accurate while describing what it is I am doing.

To be precise, I am not hunting iron signals but wrap-around signals. To understand what a wrap-around signal is, picture your VDI scale from 00 to 99; 00 being iron and 99 being a nice shining silver dollar.


Now take that VDI scale and fold it into a circle:


That’s what the real VDI scale should look like. Wrap around happens when the sweet signal from the high 90’s –97,98,99, bleeds into the low iron readings, 00, 01, etc.

I don’t pretend to understand why this happens but it is common to all detectors. Now, when I am hunting iron, I am not digging the low grunts. Those may be good targets but I bet that when the Deus generates a low grunt, it is accurately identifying iron. I set my Deus with a very low iron discrimination. What I am digging are those wrap-around signals and so far my method is somewhat good as I dig many items that are not iron with those high tone wrap around signals.

One thing I would like to share is the broken nature of a rusted nail signal. Often, the wrap-around signal generated by a rusted nail is broken, kind of like static. Non-iron wrap-arounds are often solid beeps. The other thing about the wrap-arounds is that if I really pay attention, coins that fall in this category of signal still have that sweet audio signal albeit harder to discern. It takes practice; lots of practice. That is the reason why I still gleefully dig rusted iron. It’s all about educating the ear.

So there. Now you know what I am doing.

Thank you for looking!


3 Responses to “Doing the Wrap-Around”

  1. stevessunkentreasures April 9, 2013 at 11:41 pm #

    Great post. This on should get people thinkin!

  2. lawdog1 April 11, 2013 at 7:37 am #

    If I take you to the Seated Lady place again will you show me that iron wrap around thing on my AT Pro?

    Good article, as usual.

    • pulltabMiner April 11, 2013 at 3:14 pm #

      I would love to go back to the Seated Lady field! But I will show you the wrap around effect on the Pro anytime.
      Did you know that when you are getting a lot of wrap-around at a site it is better to hunt for silver at a lower frequency? There’s more to this hobby of ours than I will ever learn!

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