Modification suggestions to separate a copper penny and dime

[dbanner]

Found it
Copper cent and dime are very close, separated by only 10 degrees phase shift.

[dbanner]

Some time constant measurements made with a PI. Don't know how compares with VLF.

Your measurements jive nicely with conductivity chart.

[dbanner]

This is where a notch feature of the golden sabre or king cobra would be great, you could get rid of the zinc and copper cent??

[6666]

Found it
Copper cent and dime are very close, separated by only 10 degrees phase shift.

I only mention this as good to know info, but not all bottle caps are steel, they tend to be a mixture of all sorts of alloys.

[dbanner]

I only mention this as good to know info, but not all bottle caps are steel, they tend to be a mixture of all sorts of alloys.

True.

[treasurehunter747]

I am looking at some things that might work for this and if they are successful I will post the results and what I did here. Thanks

[Carl-NC]

Most stock Tesoro detectors will not separate a copper penny and dime even when using a 10 turn pot for discrimination.

Higher frequencies tend to expand the low conductivity part of the scale but compress the copper/silver high conductors closer together. The 6.592kHz White's could pretty easily separate copper cents & dimes, the Tesoros tend to run 10/12kHz and may have more trouble.

[treasurehunter747]

Thanks Carl. I have noticed over the years some of the Whites machines I have separating the dime and penny fairly easily. The older Whites CL Pro 6000 is still one of the best analogs. Have a great day.

[treasurehunter747]

Whites XL Pro 6000 I meant. Sorry

[kt315]

If someone has made a modification to their machine
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you may buy XLT... ?? or to buy VDI block from russians and set.

[treasurehunter747]

KT 315 I have had an XLT and a very good machine for sure designed mainly by Mark Rowan who was chief engineer for Whites for many years. Im just not a big fan of digital audio tones. The XLT was the first detector to allow the user to change practically ever option possible and that opened up a world of opportunities. And by VDI block if your talking about a VDI module to connect to a detector without VDI I have built a few of those and from time to time I like a target VDI but if it has it I like to use full tone audio. Thanks for all your contributions KT315 you have been a member for a long time and your input and contributions are priceless. Thank you

[kt315]

TH747
if you want sound CZ5 is good to retune for your needs i think. but what trimmer/trimmers to touch i do not in course.
we do not have service manual while thats existing.

[Koala]

Found it
Copper cent and dime are very close, separated by only 10 degrees phase shift.

always wondered how these figures hold up in different ground conditions

For example a button top on wet sand moves from being discriminated out from 5 on the dial in air tests to 3 on the beach. Is everything else moved exactly 2 position down on the dial

Personally I dig everything above a large nail.

[treasurehunter747]

Hi KT315,
I have a CZ6a that I made into an 8 tone machine as the chip onboard can provide 8 tones but only 3 or 4 are used. The 8 tones are very nice and I enjoy analog tones. I also made the discrimination a 3 3/4 turn disc as I did not like the click discrimination that was sort of a preset selectable with the resistors mounted inside for each click. I also added a switch to silence the iron tones if I wanted and in some places I hunt the iron silence is very nice to have as there is a lot of iron targets. I added a separate iron control so that I could adjust exactly how much iron I wanted to allow and this iron control only affects the iron targets and nothing else. In a few weeks I would like to add a VDI to each of the two frequencies to see how that works and if in fact it does. With Arduino a lot of possibilities have opened up. Thanks for your replies my friend...

[treasurehunter747]

Koala if it weren’t for the darn ground matrix detecting would be so much simpler but it gets in the way every time.