When/Where to Use 4khz

[sphillips]

When and/or where is it best to use 4khz, struggling with this one. Any input is appreciated

 

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[midalake]

Hunting dirt, targeting silver.

 

[midalake]

Now for the official Minelab Release.

EQUINOX SOFTWARE UPDATE 3.0​

WHAT IS NEW?​

A new Single Frequency of 4 kHz has been added to the existing 5, 10, 15, 20 and 40 kHz options. This new 4 kHz frequency enhances the detection of large deep targets, particularly those found in parts of Asia. As a result of optimising for these conditions, this new frequency may respond differently for users compared to the other single frequencies.
All other single and multi-frequency settings are unchanged in their performance.
In addition to the 4 kHz upgrade feature, various stability enhancements have been included.

 

[Bart@Big Boys Hobbies]

I would use it when looking for bigger deeper objects. Lower frequencies punch down smaller but I don't have a sensitivity for small stuff. Multi frequency is an excellent setting to stay in for General Detecting.

 

[cudamark]

IMO, it's more of a diagnostic tool. When you get an iffy deep signal, switching to 4khz can help you decide if the target is deep copper or silver, or, a rusty nail. It can also help in areas with bad EMI. Don't rely on any I.D. numbers in that frequency however.