Frequencies

[vernkocher]

What does frequencies have to do with finding gold with a detector.
Thanks

 

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[DizzyDigger]

Copied from the Minelab site:

Tips for How to Use a Metal Detector - Minelab FAQs| Minelab

"As a rule of thumb, the lower the frequency used by the detector, the deeper it can penetrate the ground.
At low frequencies however, sensitivity to small low conductive targets is reduced. The higher the frequency,
the higher the sensitivity to small targets, but will not penetrate as deeply. In general, gold detectors operate
at higher frequencies (to find small nuggets), while coin and treasure detectors work at lower frequencies for
deeper penetration. "

 

[Charlie P. (NY)]

What is low and what is high? Is 15 kHz low or high?

 

[bzbadger]

Well its considered medium high. Your normal run of the mill detector operates at 7 because you will find just about everything with that but not the best for specializing. Take the white's spectra v3i it uses 3 frequencies at once low medium high and is a hot machine. Friends of mine hunt with them and always have great finds and rarely get fooled by junk targets.

 

[Jason in Enid]

What is low and what is high? Is 15 kHz low or high?

depends.... it used to be considered a high freq. Compared to a 2.5Khz silver machine it's high. Some gold specific detectors are 200Khz , so compared to that it wouldn't be high.

 

[frogmaster-riviera]

depends.... it used to be considered a high freq. Compared to a 2.5Khz silver machine it's high. Some gold specific detectors are 200Khz , so compared to that it wouldn't be high.

Maybe he is talking about VLF machines (7.5, 15Khz)...