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Depth consistancy?

mcb613

Member
Anyone noticing and issue with reliable depth readings? I ahve had several targets read 3-4 inches only to dig a solid 10" and still not recover target. Figured as junk and filled in hole. Seems like the depth reading is not accurate. Anyone noticing this and whats the issue. Thanks, Mike
 
Sometimes it is a very small piece of aluminum right in the turf. Are you using a good pinpointer and still hearing a target, check the dirt from the hole and re-check the hole?

J
 
Who knows? I used to dig up stuff like that until I figured out it is usually a discarded empty can of house paint or some other junk.... but you never know until you dig it up, and that depends on where you are... in a yard or park... no... in the woods go for it. It usually isn't worth the mess unless you're on a CW campsite or battlefield... IMO. The shovel is the ultimate discriminator.

J
 
all detectors do this. The programming assumes the signal to be the size of a coin if it is reading like a coin... (just for example) so a deep soda can, a deeper paint can, or a very shallow piece of auminum, if it is shaped right can fool a detector into thinking there is a coin at 6 or 8 inches. A folded over square tab almost always reads just like a nickel... but it ain't a nickel and the depth will be a little off.

J
 
I've found the depth meter is most accurate on coins the size of a penny. A dime at 4" will normally read 7". Large items that read 4" may be much much deeper. If the pinpointer goes nuts at 10" on a target that read 3-4" it must have been pretty big.
 
jbow said:
all detectors do this. The programming assumes the signal to be the size of a coin if it is reading like a coin... (just for example) so a deep soda can, a deeper paint can, or a very shallow piece of auminum, if it is shaped right can fool a detector into thinking there is a coin at 6 or 8 inches. A folded over square tab almost always reads just like a nickel... but it ain't a nickel and the depth will be a little off.

J

Great post. Next time this happen swing the coil several inches above the soil. If your still getting a hit.... BIG target, not a coin.
 
Yes also having very many inaccurate depth readings, as far as a target not being in the hole I have looked all of a good 10 minutes to find a staple once, I needed to know for sure if there was a target. Just yesterday I had a 8" reading on a clad dime, kept pin pointing to bottom of very damp almost wet hole, dime was just under the surface 1" from the hole. Found dime because of strong audio, after recovery nothing, open screen or pinpoint. Still learning, gotta love this CTX !
 
One thing I have learned is to use the pinpoint sizing on the detector before you dig an iffy target. Listen for the tone length a longer tone=larger target. If you get a target that reads 3" and you can trace a target the size of a can you know the target is large. Another thing is to lift the coil and see if the target disappears after you lift the coil a few inches, if it doesn't and your depth gauge is telling you three inches once again you know it is a larger target. Yes I still get fooled but not as much as I used to....I find the depth gauge is off as much as it is accurate, IMHO it is another tool to help us get the most out of our machines.

HH
 
I noticed that the Xchange2 software recorded one of my Findpoints as being 11 inches deep. I would estimate the buckle concerned was no more than 6 inches down.
 
This type of target depth inaccuracy is common to all detectors because manufactureres tune their machines to a round coin sized target. Larger targets will be shown as shallower than they actually are, and smaller targets will be shown as deeper than they actually are. Not just size but shape can also contribute to the target depth being off.
Newer clad dimes aften will be shown as being 6" or 7" deep when in fact they are 1" or 2" deep. This was consistant with both my SE and Etrac.
As mentioned a good test is to raise you coil a little at a time and if that target still gives a response when your coil is 7 or 8 inches off the ground then it's either are large target that is deeper than what is being represented by the detector, or a small target that is just under the surface even though it registeres as much deeper.

Dave
 
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