In Ground Coin Tests with Ace 250

[bobm31]

Earlier I posted "Air Tests with Ace 250". I got 5-1/2" at 4 BARS SENSITIVITY with a penny and 5-3/4" at 4 BARS with a nickel. Some of the members on this forum said that I would lose a couple of inches in the ground and some said that it would be about the same.

So, I conducted "in ground" tests with both a nickel and a penny. I prepared the test site (in my garden) by first finding an area that was free of metal. I scanned the garden at 8 BARS SENSITIVITY in the ALL-METAL mode and found a spot where I dug a 4" deep hole.

I placed a penny, laying flat, on the bottom of the hole filled it with dirt. I then scanned it at 4 BARS and 3 BARS. At 4 BARS I detected and IDed the penney at 4" to 6" deep. This is about right since the coill was about 1" above the ground. At 3 BARS I couldn't detect the penny.

I repeated the above tests with a nickel and got the same results. This confirms that a "freshly buried coin" can be detected at approximately the same distance as it can in air. If the coins had be in the ground for a "long time", they would be detected at a greater depth due to the "halo effect".

I love my ACE 250...I've had it a week now!

MERRY CHRISTMAS to you all!

 

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[hollowpointred]

thats interesting, thanks for sharing your results.

 

[kermit]

Now do that same test with the coins placed in the ground on a angle. Start out at about 15 degrees. Then do oh say 45 or 50 degrees. Then work your way up until the coin is on it edge. When the coin is on it's edge the surface area is much smaller. You have to go real slow or you will miss it. When I can go behind my buddy and dig on edge coins I know he is going to fast.
Also on edge coins will not give the same reading from all sides and most people pass them over for junk. Don't for get to drop a pulltab in the same hole also. The last gold ring I dug was a pulltab at 2 inches after I dug the tab I rescanned the hole and it said pulltab at 2 inches. It turned out to be a gold 10k wedding band. It had a cover target on top.

sounds like your on the right track.

Kermit

 

[bobm31]

Now do that same test with the coins placed in the ground on a angle.? Start out at about 15 degrees.? Then do oh say 45 or 50 degrees.? Then work your way up until the coin is on it edge.? ? When the coin is on it's edge the surface area is much smaller.? You have to go real slow or you will miss it.? When I can go behind my buddy and dig on edge coins I know he is going to fast.
Also on edge coins will not give the same reading from all sides and most people pass them over for junk.? ?Don't for get to drop a pulltab in the same hole also.? The last gold ring I dug was a pulltab at 2 inches after I dug the tab I rescanned the hole and it said pulltab at 2 inches.? It turned out to be a gold 10k wedding band.? It had a cover target on top.

sounds like your on the right track.

Kermit

Kermit...Thanks for your response.
The purpose of my "in ground" tests was for compasison to my "air tests". I do plan to repeat the in ground tests with angled coins and coins with pull-tabs.

 

[bobm31]

Now do that same test with the coins placed in the ground on a angle.? Start out at about 15 degrees.? Then do oh say 45 or 50 degrees.? Then work your way up until the coin is on it edge.? ? When the coin is on it's edge the surface area is much smaller.? You have to go real slow or you will miss it.? When I can go behind my buddy and dig on edge coins I know he is going to fast.
Also on edge coins will not give the same reading from all sides and most people pass them over for junk.? ?Don't for get to drop a pulltab in the same hole also.? The last gold ring I dug was a pulltab at 2 inches after I dug the tab I rescanned the hole and it said pulltab at 2 inches.? It turned out to be a gold 10k wedding band.? It had a cover target on top.

sounds like your on the right track.

Kermit

Kermit...I just completed a quick "in ground" experiment with a nickel, then a penny on edge at 4" deep. All I noticed is that I had to scan "faster" to detect them with 4 BARS of SENSITIVITY.

I also did an "in ground" experiment with a pull-tab (that IDed as a pull-tab...I have another pull-tab that IDs as a nickel) in the hole on top of a penny (laying flat)....no problem with pennies, nickel, dimes and quarters. However, with the pull-tab that IDs as a nickel in the hole with a coin. The quarter IDed as a dime and the dime IDed as a penny and the penny IDed just to the left of its icon as did the nickel. All IDed at "normal" sweep speeds.

What I have learned from these expeiments is that if a coiin is "on edge" it may be missed at normal sweep speeds.

 

[bobm31]

In Ground Coin Tests with Ace 250 "Coin on Edge"

Today, I did a quick "in ground" experiment with a nickel, then a penny on edge at 4" deep. All I noticed is that I had to scan "faster" to detect them with 4 BARS of SENSITIVITY.

I also did an "in ground" experiment with a pull-tab (that IDed as a pull-tab...I have another pull-tab that IDs as a nickel) in the hole on top of a penny (laying flat)....no problem with pennies, nickel, dimes and quarters. However, with the pull-tab that IDs as a nickel in the hole with a coin. The quarter IDed as a dime and the dime IDed as a penny and the penny IDed just to the left of its icon as did the nickel. All IDed at "normal" sweep speeds.

What I have learned from these expeiments is that if a coiin is "on edge" it may be missed at normal sweep speeds.