Pennies and TID

[jeffc]

Anyone ever have pennies register at 38? I had a few register on my last hunt. I tested several on the ground after recovery just to ensure I wasn't imagining this. I was hunting in the coin mode, factory setting and did not think to try other modes. Could this be normal, a soil condition, or perhaps something else? Just thought I would pose the question. Thanks.

Jeff

 

[j3cwill]

I have some copper pennies hit at 37 or 38 also here in Indiana, so that is not out of the ordinary.

 

[Mtnmn]

Usually have at least one penny every hunt that hits that high, sometimes two and it is always in a high density trash setting with high sensitivity and in a cross saving mode. Most hit at 37 and below which is probably why some of the higher readings will bleed over into 38. It seems that I get my most accurate reading on a coin by going over it from two different directions like we are supposed to. Though I continue to get "38" readings on pennies even when checking them from two directions. No doubt there are other factors involved such as the penny's depth, amt. of corrosion and its mixture of alloys. Would like to know what other's opinions are on why they think pennies are reading that high.

 

[kschae4]

Yes, same observations here. More common when hunting after rain and halo-effected. In addition, once those 1982 coppers and older are recovered, when re-scanned out of the hole, I see them read a more accurate 37, IMO.

http://coins.about.com/od/uscoins/f/copper_to_zinc.htm

 

[psyvad]

That happens to me all the time. I dig more copper pennies (non-wheats) with my Safari than my other detectors.

 

[EL Pulltabio]

I've had my Safari for about eighteen months and noticed it on my last hunt.
I came away with the idea that as the batteries weaken so does the accuracy
of the readings. I have a history of changing my Duracell batteries after seven hours
of usage but recently decided try to extend that time.

 

[kschae4]

El, can't say that I've experienced any decrease in accuracy as my batteries drain, but I do notice that when toggling between search modes and pin-pointing,re-setting is slower.