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Just a thought and info

Mick,

I don't know where your dollar coins hit To give you an idea of the ID numbers on the Edge, our new non-corroded zinc pennys hit 22, copper pennys hit from 26 to 28 depending on age/depth, silver dimes hit mostly 28. Now aluminum screwcaps vary quite a bit depending on if they are crushed or not and how the detector "sees" them. As has been stated the Edge likes round stuff and locks on well. The good part is that non-round items tend to bounce more so squashed screw caps bounce in the low to mid 20's and round non squashed ones again depending on orientation hit more around 25 but still give somewhat of a bouncing ID because of the 3 dimensional shape. I can't remember digging a screwcap that read in the copper silver range with the Edge.

To give you an idea of how fast the TID and audio work on the Edge and Coinstrike. small .22 short hulls will give bouncing readings in the 5-7 range even at depths of 4-5". Another example is the modern square tab people break off soda cans which consistently give a bouncing 12-13 reading. Some detectors wait until they have seen the peak target signal before giving a read so will either give a solid reading or in the case of closely co-located targets an improper read and in some cases even no indication at all of a possible good target down there! On one recent example I have used in multi-tone mode it will acutally give broken indistinct signals on certain irregularly shape non-ferrous targets. Now thats pathetic, what decent design engineer would think that was a good idea? (Perhaps pure coin hunters like that type of "profiling" feature?) The Edge and CoinStrike tell it like it is and to me thats much more useful in the field. I do not like detectors that try to make the decision for me!

I will say this for my type of hunting which includes hitting the nasty iron filled sites the Edge and Coinstrike pretty much stand alone when it comes to multi-tone machines that are fast enough and give you the "un-adulterated" info needed to pull out those co-located targets. There are darn few single tone beep-dig detectors that will compete or come close.


Tom
 
Great observation Tom. I am a believer that you have to dig good sounding signals and if they turn out to be junk, you have to take the time to look for variances from the good signals. There will always be at least a slight difference between a coin and a bottle cap. It is up to the digger to figure that out. I would like to see you do some field tests of detectors and then maybe you could stay at a Holiday Inn Express! I have a hard time putting my thoughts into words and you have a knack for doing a great job of that. R.L.
 
G'day Tom.
That is exactly the information that I was looking for. I have never seen an ID edge, so I'm not familiar with it's numbers. I found a US 1 cent coin at Christmas. It has some slight corrosion on one side. On the Explorer, that coin gives a reading of 25, which is the same number as our $2 coin. Our $1 coin comes in at 26 on the Explorer. On the Ace 250 all three coins come in on notch 8. The Explorer can't separate screw caps and coins. The funny thing is though, that I've found that the Ace and more particularly the X-Terra can figure them out to some degree via the pinpoint fade ( as you lose the signal off the 12 o'clock position).
It sounds like the ID edge will have trouble separating the squashed screw caps and coins though. We have coins in the pull tab range as well.
Thank you for some astute observations. Hopefully, I have clarified what the challenge is.
Mick Evans.
 
Hi Mick,

As we know to well there are lots of variable when it comes to ID #'s. I would like to hear from other Edge users to see if their screwcaps readings coincide with mine. The numbers I quoted are in ground on "clean" targets. Our old Indian Head pennies read below the new zinc pennies and there are exceptions on low readings with the older copper wheat pennies as well. But for the most part most copper pennys here do not read below 25-26 and the aluminium screwcaps that I have found tend to read just below.

Tom
 
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