Am I missing something ?:tesoro:

[Richard@BackwoodsDetectors]

[size=large]A friend invited me up to his house to show me something and said to bring a few different detectors. When I got there, he had a coin buried at 6" in some bad ground. I started with a Safari and couldn't hit the 6" coin ! Next the AT Pro, couldn't hit it ! Next a Vaquero with stock coil, couldn't hit it ! Then he handed me a 5.75" Concentric for the Vaquero and told me to try it. I put the coil on and swung it over the coin and to my surprise, it knocked the crap out of the 6" coin. Am I missing something, why would this small coil hit the coin and the other larger coils and different detectors not touch them. ?
Am I missing something ? Thanks for your replys .. Richard Backwoods[/size]

 

[MarkCZ]

How long had the coin been buried?
If it was fresh buried then wait a few days and it will most like completely vanish even with the smaller coil.
With the Tesoro the coil size doesn't effect depth much at all, but the smaller coil is a little more sensitive to smaller items.

Fresh buried coins beyond 5" will sometimes just disappear to a point that many metal detectors will not hit on them. (Its believed to be due to disturbing the ground matrix)

I've got two seven inch Nickels that have been buried for near a year now and they still don't respond to any of my detectors properly, the Tesoro in all metal will hit on them okay.

My Brother buried a 7" I believe it was a dime and got out his F75 and NOTHING! got out his Tejon and bingo! no problem. A short time later and neither one would hit on it!

My brother has come up with an idea in planting coins for a coin garden. Mark the area for the coin, dig down beside that and push the coin in from the side unit its under the marked area, then fill in the adjacent hole.

I lost a whole set of coins in a six inch garden I had, while at the same time I had a four inch set that worked perfect right from the get go.
Planted coins can for sure act funny until they've been in the ground for a LONG time if they are much deeper than four inches.

Mark

 

[Richard@BackwoodsDetectors]

Mark, you may be right, I didn't even ask him how long the coin had been buried. I am just not thinking today. Durn old age !! thanks Richard

 

[Canewrap]

Richard, were you using any disc when detecting? Could be something as simple as some iron that he didn't know was there and was masking the coin, until you tried the smaller coil.

 

[WV62]

Here is the brother MarkCZ was talking about and he is correct about my small test garden.

I would say you would have the same results with a 5.75 WS.

My coins have been the ground a little over a year and the detectors are starting to pick them up.

Brother Ron in WV

 

[kaolinwasher]

I bet a small iron bit to deep to hear in all metal is the culprit and somewhat off to the side this would happen to my bliss tool, goes to show small coil can outperform the big ones sometimes

 

[MarkCZ]

Richard, were you using any disc when detecting? Could be something as simple as some iron that he didn't know was there and was masking the coin, until you tried the smaller coil.

I cleaned my coin garden spots with my 1266 before I planted them, there was nothing left that would cause a coin to disappear, plus after they have time to take root the detectors will start hitting on them. It took near two years for my 8" garden to start working correctly, its the best garden I have now.

Mark

 

[slingshot]

I am really pizzed that no one tried the Compadre. Then I would know the answer.

 

[Elton]

n/t

 

[jarrow]

How long had the coin been buried?
If it was fresh buried then wait a few days and it will most like completely vanish even with the smaller coil.
With the Tesoro the coil size doesn't effect depth much at all, but the smaller coil is a little more sensitive to smaller items.

Fresh buried coins beyond 5" will sometimes just disappear to a point that many metal detectors will not hit on them. (Its believed to be due to disturbing the ground matrix)

I've got two seven inch Nickels that have been buried for near a year now and they still don't respond to any of my detectors properly, the Tesoro in all metal will hit on them okay.

My Brother buried a 7" I believe it was a dime and got out his F75 and NOTHING! got out his Tejon and bingo! no problem. A short time later and neither one would hit on it!

My brother has come up with an idea in planting coins for a coin garden. Mark the area for the coin, dig down beside that and push the coin in from the side unit its under the marked area, then fill in the adjacent hole.

I lost a whole set of coins in a six inch garden I had, while at the same time I had a four inch set that worked perfect right from the get go.
Planted coins can for sure act funny until they've been in the ground for a LONG time if they are much deeper than four inches.

Mark

Not to take away from your brothers idea but I heard this coin garden idea a few years ago from Thomas Dankowski.

 

[CladDog]

You were a victim of masking. There was another metal object in the ground near the coin. If you were running with discrimination, the large coil was knocking out the discriminated metal and the machine could not recover in time to hit the coin. With the smaller coil, your recovery time sped up considerably and allow the silent or masked target to disappear before the coil came to the coin.

It is the reason probably 90%of the targets we are after are still in the ground at detectable depths. Masking, especially silent masking, is a hunters silent killer.

 

[SkiWhiz]

Richard, were you using any disc when detecting? Could be something as simple as some iron that he didn't know was there and was masking the coin, until you tried the smaller coil.

I cleaned my coin garden spots with my 1266 before I planted them, there was nothing left that would cause a coin to disappear, plus after they have time to take root the detectors will start hitting on them. It took near two years for my 8" garden to start working correctly, its the best garden I have now.

You just let the cat out of the bag Mark, yup you just said that after you planted the coins they started to take root and are well on their way of becoming a money tree.So money does grow on trees at least in W.V. it does.

 

[MarkCZ]

You were a victim of masking. There was another metal object in the ground near the coin. If you were running with discrimination, the large coil was knocking out the discriminated metal and the machine could not recover in time to hit the coin. With the smaller coil, your recovery time sped up considerably and allow the silent or masked target to disappear before the coil came to the coin.

It is the reason probably 90%of the targets we are after are still in the ground at detectable depths. Masking, especially silent masking, is a hunters silent killer.

Well I see the possibility in your thinking and I agree but only to a point, It the junk target is only to one side and you swing in the direction to hit it first then it would disc out the junk and not have enough time to recover before hitting on the good target, But! when you swing in the other direction it would hit on the good target then not have time to recover to register the bad target. That's just to say its would be there in one direction and not in another. When they disappear you can't detect them from any direction.

Now, if masking occurs because junk is either directly above or below a good target then that would take out recovery time, but in my gardens the holes were dug, the dug out dirt was checked and the hole was checked before the coin was planted. I had the same problem with two different 6" gardens (three coins each) my 8" three coin garden and more recently two separate 7" Nickels.

Then after the 8" coin garden was working really good I dug up the silver half and replaced it with a clad half near a year ago (same hole) now the larger cent and the Indian head penny are fine, the clad half is pretty much gone in discrimination mode.

Now, maybe there is certain soil types that this is worse to happen in than others, but in WV its for sure a pattern.

Mark

 

[WV62]

How long had the coin been buried?
If it was fresh buried then wait a few days and it will most like completely vanish even with the smaller coil.
With the Tesoro the coil size doesn't effect depth much at all, but the smaller coil is a little more sensitive to smaller items.

Fresh buried coins beyond 5" will sometimes just disappear to a point that many metal detectors will not hit on them. (Its believed to be due to disturbing the ground matrix)

I've got two seven inch Nickels that have been buried for near a year now and they still don't respond to any of my detectors properly, the Tesoro in all metal will hit on them okay.

My Brother buried a 7" I believe it was a dime and got out his F75 and NOTHING! got out his Tejon and bingo! no problem. A short time later and neither one would hit on it!

My brother has come up with an idea in planting coins for a coin garden. Mark the area for the coin, dig down beside that and push the coin in from the side unit its under the marked area, then fill in the adjacent hole.

I lost a whole set of coins in a six inch garden I had, while at the same time I had a four inch set that worked perfect right from the get go.
Planted coins can for sure act funny until they've been in the ground for a LONG time if they are much deeper than four inches.

Mark

Not to take away from your brothers idea but I heard this coin garden idea a few years ago from Thomas Dankowski.

Did my late idea work??

Ron in WV

 

[Idxpro]

You were a victim of masking. There was another metal object in the ground near the coin. If you were running with discrimination, the large coil was knocking out the discriminated metal and the machine could not recover in time to hit the coin. With the smaller coil, your recovery time sped up considerably and allow the silent or masked target to disappear before the coil came to the coin.

It is the reason probably 90%of the targets we are after are still in the ground at detectable depths. Masking, especially silent masking, is a hunters silent killer.

Could not have said it better!!

 

[Tajue17]

I wonder if a super tuned vaquero would of found it.

 

[Southwind]

Yes, Yes you are missing something! LOL

Actually the test was rigged, like most, to maximize a particular detector. The 5.75 is a concentric that goes about 6" deep. That means at 6" the detection pattern is very small and perfect to hit a single target masked by its surroundings. At 6" it is like touching it with the very tip of the detection pattern and ignoring the surroundings.