Hi

[hooby life]

Jewelry as such earnings, chains with small links and similar; are presenting horrific targets for most of the common detectors.
Any awkward shapes that disperses the eddy currents like that.
SMW is not the exception. It will struggle with such targets.
But it will perform very good on targets like coins, rings and similar.
SMW is one of the "deepest" diy i ever made. General purpose nature. Usual targets in our hobby.
In my case; coins. Ancient coins, mostly made of bronze and similar alloys.

Ok that s good.
Which best version of smw you suggest to me ? The deepest ?

[ivconic]

Ok that s good.
Which best version of smw you suggest to me ? The deepest ?

The prime one.
Ok, now you pulled out from me the latest bijou!
Which i never intended to share here!
Let it be the treat for this month:

[ivconic]

C30 and C32 are not present on pcb draw.
Those are optional.
Try them, if you like them; keep them.

[MartyJ1963]

Hiya Ivconic,,,Thanks for sharing the SMW layout,,,Could you let us know the Coil Data for this pcb please and Frequency,,Thanks in advance. Regards, Marty.

[MartyJ1963]

Hiya all,,,Thanks again Ivconic for the SMW Layout,,,,Can anyone tell me the value of the Capacitor in the picture please? I've been Looking forward to making this S.M.W for a couple of years now for my collection,,Also, if anyone knows the TX and RX frequencies so I can have a go at making the coils,,,Much appreciated, Regards,,,Marty.

[ivconic]

Hiya Ivconic,,,Thanks for sharing the SMW layout,,,Could you let us know the Coil Data for this pcb please and Frequency,,Thanks in advance. Regards, Marty.

Coil specs close to specs of Minelab TS1000 coil.
1mH TX and 15mH RX.
Although SMW is tolerant and can be trimmed also with bit different coil specs too.
Frequency can be 6 to 8kHz.
Capacitor is 100nF.