Detecting Gold Jewelry

[Ham]

I read an article by "George Payne", the engineer that initially engineered the ground canceling, target id & discriminating circuitry. He stated that the best frequency to use for U.S. nickels & gold jewelry is 16.5 khz. If what he stated is fact, wouldn't it be logical to acquire a detector on or near 16.5 khz? One would believe that it would have an advantage over other detectors with lower frequencies? I am aware that there are many people that have found gold jewelry at frequencies much lower than the above. Just a thought to throw out into the forum.

[UFO]

The people at Tesoro agree with you.

My Tesoro Lobo LST runs at around 17.5 to 17.8kHz.
It is a gold prospecting type machine that works good for general hunting.

[SVEN1]

According to Dave Johnson ( former Tesoro engineer of Lobo, Diablo)( current Fisher -Teknetics-BH etc. engineer) and a number of other engineers suggest that with modern digital detectors that higher frequency is not always the best for gold "jewelry".

Prospecting for gold "nuggets" a higher frequency unit has the advantage.

[kt315]

There is another position, not frequencies, but a delay of sampling. Yes there is also sampling in VLF while your matter seems is not about PI machine. I give a clipping from deepers Manual you can rate this passage.

SENSIBILITY AND DROP GOLD SILVER SYSTEM:
The sensibility of Deepers10 DD system is adjusted through theSENSI knob (short for sensibility). This system allows the detection of Gold and other precious metals with much greater ease and depth than any other detector. One must know that gold in particular, is harder to localize than other metals. Most of the common detector, including the best VLF detectors, only provides mediocre results with such metals; it is rather rare that they find a gold coin or a jewel at 13 to 15 centimeters (4 to 5 inches). The Drop Gold Silver of Deepers 10 DD system eliminates those problems since it works in micro-seconds (the internal clock is set at 8 micro-seconds with the SENSI knob set at maximum, (RED DOT POSITION) and not in milliseconds as it is with the other devices, hence its extreme(superior) ability to detect precious metals even at great depth. When it comes to silver, bronze, copperdetection and especially gold prospecting, it is recommended to set theSENSI potency at maximum(RED DOT POSITION) if the terrain permits.

[satdaveuk]

Gold is actually a poor conductor so can understand how it sorts the men from the boys far as machines so to speak.
When searching for gold, you can forget using dicrimination because its comes in at any given phase depending on many factures, any experienced detectorist will confirm what im saying, so if you want gold you dig everything, if you have never found gold like hundreds haven't, thats the reason why.
The most disapointing result is with my multifrequency ML and best result is 15khz whites, both tested in all metal modes buried objects.

Far as pure silver and copper most machines ive built or own work well.

Ive always gone by the theory and practise that if your detector reacts well to gold the rest take care of themselfs, which todate has proved true.
Totally agree its not just frequency, infact its very little to do with frequency, its the build and design from front end upwards based around a given frequency that gives the end results of how the equipment performs.
If frequency was the answer then the multifrequency machine should in all sense and purposes be streets ahead as they so often portray, but of course its not because ive proved it.
Just thought Id give my two pennys worth

Regards