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metal signal/discrimination?
- Thread starter madsalts
- Start date
OK Cole, I'll bite the bait.
Easiest to detect and discriminate are rings made of high-conductivity metals. Next, disc shapes (for example coins) made of medium to high conductivity metals. Some aluminum trash falls right in there and can be tough to deal with.
Easiest to discriminate out is magnetic iron/steel alloy elongated shapes (nails, bolts). Pieces of flat steel (esp. steel bottlecaps) can give discriminators fits, although experienced beeperists usually find tricks they use to mostly avoid digging them.
The larger an object is, the stronger its signal and therefore easier to detect and to discriminate. As objects get smaller, the ability to discriminate/ID them falls off faster than the ability to detect them. This is why discriminators are almost useless in gold prospecting machines: the overwhelming majority of gold to be found is tiny stuff. It's also why small bits of iron often "wrap around" into the high coins ID category if you've got the sensitivity cranked up.
Easiest to detect and discriminate are rings made of high-conductivity metals. Next, disc shapes (for example coins) made of medium to high conductivity metals. Some aluminum trash falls right in there and can be tough to deal with.
Easiest to discriminate out is magnetic iron/steel alloy elongated shapes (nails, bolts). Pieces of flat steel (esp. steel bottlecaps) can give discriminators fits, although experienced beeperists usually find tricks they use to mostly avoid digging them.
The larger an object is, the stronger its signal and therefore easier to detect and to discriminate. As objects get smaller, the ability to discriminate/ID them falls off faster than the ability to detect them. This is why discriminators are almost useless in gold prospecting machines: the overwhelming majority of gold to be found is tiny stuff. It's also why small bits of iron often "wrap around" into the high coins ID category if you've got the sensitivity cranked up.
