Halo effect and Fringe signals

[ZumbroKid]

Ever dig a weak signal and find a coin real deep? Ever dig a good signal only to find nothing? Did you cover the hole back up? Did you dig a little deeper and find a coin? What have you experienced? Another winter discussion topic.

 

Amazon Forum Fav 👍

A Handbook of Civil War Bullets and Cartridges - Grab it through Amazon!

[Michigan Badger]

Ever dig a weak signal and find a coin real deep? Ever dig a good signal only to find nothing? Did you cover the hole back up? Did you dig a little deeper and find a coin? What have you experienced? Another winter discussion topic.

Yes, I remember one very weak signal I got with my first detector (Whites Coinmaster IV). I dug a silver 1938 quarter (near mint) at about 7 inches deep. This is when I first learned of the "halo" effect. That same coin reburied would detect at maybe 4 inches. I believe 100% in the "halo" theory. All metal (I believe even gold) does "something" to the surrounding soil that makes it a bigger target to the detector. This "something" is not just corrosion although that also has an effect.

I believe "halo" can double air depth. Many coins are on edge and the "halo" is the only reason they're ever found.

 

[ramjet2187]

I dug a CW fired round ball last week that probably was exhibiting the Halo effect. When I first dug the plug, the target disappeared. I kept digging, and eventually dug about an 8 inch hole, but found the target in the spoil, so I don't know how deep it was, but it 'disappeared' as soon as I started digging.......................

Roger

 

[Monty]

What most often fools my detectors, or is it me , is an aluminum can. Those darn things always sound off like a large silver coin. Is that the halo effect or is it just because they are aluminum? Probably a little of both as the ones that fool me are usually old and look like they have been in the ground a long time. The true halo effect I've encountered with buried rusty nails. They will often ring up as pennies but as soon as they are exposed they tend to "disappear" because I usually have ferrous metals notched out. Ditto small pieces of wire and especially barbed wire, Monty