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Vallon VMH3CS Mine Detector
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Originally posted by Ferric Toes View PostHere is a picture of the samples. Those that jump to a magnet on the left. Those that have little or no attraction on the right. Those on the left also give a strong deflection on a compass needle, although they may have aquired remanent magnetism when I separated them.
Eric.
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Eric: Somewhere I saw an elipticle coil you had wound in a clam shell style body. Could you modify the coil inside one of those shells to be 2" x 10" mono and would that give him the knife blade effect I think he wants and would it have any depth?
Carolina
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Originally posted by Carolina View PostEric: Somewhere I saw an elipticle coil you had wound in a clam shell style body. Could you modify the coil inside one of those shells to be 2" x 10" mono and would that give him the knife blade effect I think he wants and would it have any depth?
Carolina
Eric.
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Originally posted by kingswood View PostHad 25mm of rain yesterday....to wet to get out!
Hoping things dry out for tomorrow!
I have plotted out the decays of the two groups of ironstone that you sent and there is a difference. Will post plots shortly.
Eric.
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Interesting results Eric....Not sure what that all means
As for the rain, dont mind detecting after it, its just that after rain it takes a while for the huge puddles to drain, so we are left with very muddy bush tracks!!
I didnt want to get stranded if it rained even more...and it did, another 5 mm!
Crossing fingers I can get out to where I want to go today
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Originally posted by green View PostHi Eric, did you test the rocks whole or crushed?
Those results were from two whole rocks. There is a lot more that could be done, such as plotting graphs for each specimen to see if there was a consistent difference between the two groups. The starting amplitude was set at 1000 arbitrary units at 10uS delay for both rocks by adjusting the gain of the test instrument.
Eric.
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Originally posted by Ferric Toes View PostHi Green,
Those results were from two whole rocks. There is a lot more that could be done, such as plotting graphs for each specimen to see if there was a consistent difference between the two groups. The starting amplitude was set at 1000 arbitrary units at 10uS delay for both rocks by adjusting the gain of the test instrument.
Eric.Attached Files
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Originally posted by green View PostAre your hot rocks easily detectable with your detectors after ground balancing?Even with good GB, they caused a nice signal.
I was able to GB to the rock directly, but then the rest of the ground became very noisy. The annoying thing about the rocks from this particular area, is that it is littered with identical looking rocks, but not all of them cause a response....So you are kind of forced to dig every signal, which so far have all been hot rocks
It would be nice if the highly mineralized rocks that cause a signal were all green or something so I could actually identify them easier ha ha
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Just a general question, the larger the mono, the less sensitive it should be to hot rocks??
I must admit I have only used the 30cm coil a few times, but dont remember digging as many rocks as I do with the std coil...
I will try the 30cm coil out there next time....
If I reduced the sensitivity, would the hot rock detection reduce also??
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