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    The clear peak of the Au-197m isomer at 279keV is the main peak in gold analysis by the GAA method. Additionally, considering the gold line at 130keV would increase the accuracy of calculating the gold concentration by another 2-3% [12], but this peak is obscured by the high background in the spectrum.

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     · The best frequencies for detecting gold will be high frequencies. As sensitivity is increased, the ability to detect the smallest of nuggets is higher. However, the higher the frequency, the more prone it is to signal interference from various sources and depth is compromised. VLF gold detectors will usually offer a single frequency somewhere ...

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     · Fisher Gold Bug Pro. The Fisher Gold Bug Pro features high sensitivity to small gold nuggets, but this detector also works well as an all-purpose metal detector. The coil is 5 inches, making it perfect for small gold, but you can also fit it with an 11 inch DD search coil. Price: $549. Weight: 2.5 lbs.

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    Many high-end metal detectors also contain a microprocessor-controlled analyzer known as a discriminator. A discriminator compares the signals sent by the receiver coil to the known signals of various metals. For example, the typical gold signal is noticeably different than …

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    Gold Digger Metal Detector will detect all kinds of metal from include iron, steel, brass, aluminum, silver, and gold coins and jewelry (not designed for gold prospecting in certain extreme environments) Detects coin-size objects up to 6 inches deep; larger objects up to 2 feet. Operates on (2) 9-volt ALKALINE batteries (not included).

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    Here''s a fun story: a detectorist in Alaska purchased the Garrett AT Pro for his general metal detecting which also included nugget hunting in the mining claims nearby. He let his 12-year-old son test it out and within 10 minutes, his son found two .5 oz. gold nuggets.

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    Checking the targets with the Discriminate mode turned up just high enough to knock out the small iron will give you much more information before you decide to dig. Practice this by doing air tests to see the best setting for your particular metal detector. Garrett ATX Metal Detector Basic Pack. Reg. Price: $2,495.00. Sale Price: $2,120.75. Save:

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    Most gold prospecting detectors feature manual ground balance controls. This feature will allow the machine to be adjusted to filter out the general iron content of the ground. Don''t be intimidated by the need to ground balance, after you have done it once or twice, it will become second nature.

  • 17 Best Metal Detectors in 2021

     · Gold nugget hunting (prospecting) Prospecting machines can range from $500 all the way up to $10,000. Most of these machines will be PI and should be used in areas where gold is known to be found. If you want the best gold prospecting detector, go with a Minelab. They can''t be beaten. Read our complete guide on the best metal detectors for gold.

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