Question on gold jewellery and the 705

[madforclad]

The other day I found a nice 14 carat gold women's earring with small clusters of diamonds at a local school tot lot with the AT Pro in the rain. It rang in a solid 45. As usual when I returned home I ran my other machines over it just to see what the numbers would be. The Etrac gave a solid 12 07 in 4 tone ferrous which I would have dug. However the 705 with the coiltek 6" digger coil would only ring a 2 which I probably would not have dug in the field. I guess I would have expected a higher number given the gold target. Am I missing something here?

 

[Old Longhair]

Considering that your ATP is 15kHz, and the Digger is 3kHz, I'd have to say that I'm not surprised at all.
I've found gold twice with my Digger, and it was the tone quality that caught my attention, not the ID.

If gold is the desired target, any other frequency would be more accurate and give a better response than 3kHz. Part of it has to do with the response to the chosen frequency, and part of it has to do with target segment bin width assignments of that frequency with respect to the target properties.

 

[Patchfinder]

Wich is the best coil for detecting for gold nuggets with an X-terra 705?

 

[Old Longhair]

If you're a nugget hunter, then the 6" HF DD is the coil for you. In Prospector mode it can see pickers as small as .02g.
Smaller coils will be more sensitive to smaller targets, and HF coils will be more sensitive as well as garner a better response on low conductors than comparable size coils of other frequencies.