hi all i went out today with my gta 500 on farmland i picked up a load of junk which showed on my screen as 1 or 2 but every now and then i would get a signal up at 9 or higher and only when i dug it out the signal would change to junk (1 or 2) i then searched the area again with the junk removed to check whether something else was there but nothing why does my machine register a 9 does anyone know ? i did manage to find a roman brooch which showed at 4 so well pleased with the machine but this 9 signal gets to me as at first i think im on something only to see some rusty old iron. any ideas or tips would go down a treat thx guys/gals
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any idea whats going on?
- Thread starter brrttpaul
- Start date
Bugar In. USA
Active member
My 350 , and some others would do that, usually it was because a iron object had rusted away completely in the soil, and actually converted the soil to like iron dust/dirt, even with sens lowered i would get weird readings, take something white/ rag or whatever, and sprinkle some of rhe soil on it, check color, or use a small magnet, see if the soil sticks to it, if it sticks=iron, and the problem
It's fairly normal with something that has a lot of
rust. Iron is pretty low conductivity, but rust itself
is pretty high conductivity. Thats why rust rings up
so hot most of the time. I've seen rusty nails full peg
at the $1 tab... The only real tipoff that it's not likely
a coin, is the bouncing from iron to coin range, and the
coin range hits will usually be so hot as to likely be a
fluke. IE: bouncing up in the 50c and $1 range at times.
You don't see that too often on coins. A true half will
ring up pretty stable and not bounce down to iron, unless
it's next to some iron.
MK
rust. Iron is pretty low conductivity, but rust itself
is pretty high conductivity. Thats why rust rings up
so hot most of the time. I've seen rusty nails full peg
at the $1 tab... The only real tipoff that it's not likely
a coin, is the bouncing from iron to coin range, and the
coin range hits will usually be so hot as to likely be a
fluke. IE: bouncing up in the 50c and $1 range at times.
You don't see that too often on coins. A true half will
ring up pretty stable and not bounce down to iron, unless
it's next to some iron.
MK