Well I went out for a couple of hours close to the beach to do a few tests on Gold, silver, and Canadian coins. Here are the results and pictures.
Posted on: July 13, 2011, 05:54:33 PM
Ok so let me explain each picture. First off the picture here is the sensitivity level for the Jeotech. I have described the sensitivity level use the O'clock method. As you can see on the picture.
Soil conditions you can see on the pics. If you want more detail I could describe the feel taste and texture if you would like..But I think the pics say enough.
First pic: This was a void test for shallow small container 750ml yogourt container. Under 5 inches of soil this is what I found, At full sensitivity (06:00) I was only able to pick up one light on the void detection (left hand side led markers) Nothing was detected at (03:00) and that was at 5 inches of soil depth to top of container. Note: I will be doing better void testing later next week with more precise results, this was just a first swing)
Second pic: This was a glass jar 1/4 with Canadian coins at 11" to top of the coins: On detection all the led's went on at 06:00, at 12:00 three lights go on, at Min.1, two lights go on, and Min.2, one light goes on all marked as "Non Ferrous" (bang on pinpointing)
Third pic: This is the Gold ring test at 12 inches of soil: 06:00 one light goes on and marked as "Non Ferrous" At the 03:00 target was lost.... Moving to sensitivity of 04:30 target was reacquired and correctly identified as "Non Ferrous" (bang on pinpointing)
Fourth pic: This is the Silver ring test: At 12 inches bellow, and at full sensitivity 06:00 all I got was a blip.. flash of one light on the metal side (right side) and it identified it as "Ferrous"
Notes:
It can detect fairly big voids.. did locate a marmot den under ground about a foot. I will be doing testing with Rubbermaid containers at different depths and we will see.
The sensitivity seems to work exponentially with the level it is at. From full 06:00 to 03:00 I lost half my depth! But at full sensitivity it was difficult to keep the ground balance.
Min 1: this was really good in very trashy areas.. picked the gold ring from next to a pop can and nails, tabs and foil.. keep in mind that was a surface search!
All testing was done close to shore from the lake.
More testing to come!
Posted on: July 13, 2011, 06:23:03 PM
Just on a side note here, silver is best detected at 3kHz and gold at 15kHz. This detector is set for 12.5kHz. I guess this is why it did not do so well with the silver ring.
Am i correct in thinking this way?
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There are 6 attachment(s) in this post which you can not view or downloadPlease register for viewing them. JeotechCoinJarA.jpg JeotechGoldRingA.jpg JeotechRings.jpg JeotechSilverRingA.jpg JeotechVoidA.jpg Jeotechtesting level.jpg
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