Mr Hinds, can you please tell the forum what the magnetic permeability is of 'iron' and 'steel', compared to that of silver or copper items.
Then explain how your detector sees THROUGH such ferrous materials, and by your own experiences, 'ignores them in preference to non-ferrous metals.
Just for the records; I detect regularly with my E-trac, meeting these ferrous/coins situations often.
By experience and good practice, I find the optimum direction and technique necessary to expose the good from the bad.
My E-trac doesn't see THROUGH the iron, but rather depends on sufficient lines of flux by-passing and reaching the nearby 'coin', but in close conformity to those adjacent lines of fux that are attracted into the iron, .
The dominance then of one target over the other, is a matter of many parameters, all of which are unique to that particular moment in time and place.
NOTE:- The iron can assist in an indirect way, if the object
Then explain how your detector sees THROUGH such ferrous materials, and by your own experiences, 'ignores them in preference to non-ferrous metals.
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Just for the records; I detect regularly with my E-trac, meeting these ferrous/coins situations often.
By experience and good practice, I find the optimum direction and technique necessary to expose the good from the bad.
My E-trac doesn't see THROUGH the iron, but rather depends on sufficient lines of flux by-passing and reaching the nearby 'coin', but in close conformity to those adjacent lines of fux that are attracted into the iron, .
The dominance then of one target over the other, is a matter of many parameters, all of which are unique to that particular moment in time and place.
NOTE:- The iron can assist in an indirect way, if the object