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!
The Dirt Is Good To Me 
Great post. This on should get people thinkin!
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.
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!