DFX question 3K or 15 k whats the diff on depth

[Gunnar of bradford MN]

I was wondering can you find coins deeper in 3KHZ or in 15KHZ can you tell the diffrence as aposed to using both at the same time ???????????????????????????????????????????????????????????????????????????????????????????????"

 

[nw1886]

All depends on what kind of target it is. (15k likes silver and 3k nickel.) Depth is relative to the soil and does change so playing around with each will give you an idea which is best. I seem to favor towards the 15k (When running single freq. on my DFX.) Back in the seventies, I ran a Garrett DeepSeeker. It ran @15k, and got tremendous depth. Picked it up a while back and what an unwieldy "BEAST"!!! (They all were back in ancient times.) Sure appreciate the weight and balance of the newer stuff.

 

[Monte]

I was wondering can you find coins deeper in 3KHZ or in 15KHZ?

[size=medium]Gunnar, there is no cut-and-dried, rock-solid answer because there can be a number of variables involved. The best way to answer is with some loose generalities with regard to operating "frequency" benefits then take it from there.

Since manufacturers started offering ground cancelling detectors in 1974 we have generally classed them into two categories, the lower-end of the VLF (Very Low Frequency) range and the mid-to-upper range o the VLF range. The VLF range that most metal detectors have been designed to work in has run from about 1.75kHz to 20 kHz. Most of the early entries ranged from

 

[Tom_in_CA]

"What he said"! Good recap of the evolution, and how it plays into today. I recall all those machines and how it played into the actual hunting environs. Heck, I can even envision the guys swinging those machines, comparing signals with each other, etc... And it was 25 to 30 yrs. ago. Seems like yesterday

 

[Larry (IL)]

I enjoy every chapter of your never ending book Monte. A sincere thanks for the time and knowledge you contribute to educating the metal detecting community.

Thanks again,

Larry

 

[nw1886]

That was a great rundown Monte. Guess I had the Groundhog and the Deepseakers freq.'s reversed. (Had them both for a while.) You brought back a flood of memories like...all those bits of nails...the unreadability of signals when dealing with electrical interference...and the sore arm! Yup...things are better.