whats in a frequency?????

[steve 1]

I would like to open a discussion about the different frequencies that detector manufacturers use,, and why they use them., I often wonder why some machines operate at one frequency, and others a different frequency. Why did my Sidewinder operate at 12 kz, and my Cibola operates at about 14 kz? Does a higher or lower freq detect certain metals better than others? Is a higher or lower freq more stable than the other? Does anyone on this planet know what freq the silver umax operates at? (not the silver saber).. I have even read that some manufacturers use multiple frequencies to ( BOMBARD ) the target with, then picks the best return signal to use to id the target.. Surely there must be some rhyme or reason for all of these different frequencies... Is a radio frequency used in a metal detector the same as sonar, but is used primarily on land??

 

[crazyman]

This is a subject that is not easily explained. I'm not a techy type person but can only go by experience with different detectors in my ground thru the years. When it comes to coin and relic type detectors there is more involved on how well they hit on certain targets in the ground than just the freq. Higher freq. detectors for the most part will hit smaller lower conductive targets better than a low freq. detector but the gap starts to narrow quickly in high mineralized ground. Of course I'm talking about small coins, buttons and gold rings. In highly mineralized ground a four filter lower freq. detector will often outperform a 2 filter high freq. detector for coins and relics. Other electronics within the detector and coil also come into play. I live in an area with high mineralization and one of my detectors runs at 5 khz. and uses a 7 1/4 inch DD coil and another that runs at 14 khz. and uses a 8 inch concentric coil. The lower freq. detector hits a very small gold ring buried at depth in my test garden much better than the higher freq. detector because it handles the bad ground better. In good ground the results may be different with these particular detectors. In bad ground the higher the freq. the less it can handle the ground. There's always give and take when it comes to a detectors freq. Even a gold detectors freq's. has to be balanced. The freq. has to be high enough to hit the tiny nuggets but low enough to penetrate the high mineralized ground often found in gold country. My detector selection when it comes to the freq. is based more on where I hunt more so than what I'm hunting for. This is my story and I'm sticking to it but I have been wrong before. Just ask my wife.

 

[tabdog]

I've never run a four filter machine and can't comment on it.

I am glad you made those comparisons.

I don't understand it well enough, but I am learning.

This is the very subject that may influence my next detector

purchase.

But there are things to be discovered and learned.

Thanks for your thoughts,

 

[louis vuitton]

This is a subject that is not easily explained. I'm not a techy type person but can only go by experience with different detectors in my ground thru the years. When it comes to coin and relic type detectors there is more involved on how well they hit on certain targets in the ground than just the freq. Higher freq. detectors for the most part will hit smaller lower conductive targets better than a low freq. detector but the gap starts to narrow quickly in high mineralized ground. Of course I'm talking about small coins, buttons and gold rings. In highly mineralized ground a four filter lower freq. detector will often outperform a 2 filter high freq. detector for coins and relics. Other electronics within the detector and coil also come into play. I live in an area with high mineralization and one of my detectors runs at 5 khz. and uses a 7 1/4 inch DD coil and another that runs at 14 khz. and uses a 8 inch concentric coil. The lower freq. detector hits a very small gold ring buried at depth in my test garden much better than the higher freq. detector because it handles the bad ground better. In good ground the results may be different with these particular detectors. In bad ground the higher the freq. the less it can handle the ground. There's always give and take when it comes to a detectors freq. Even a gold detectors freq's. has to be balanced. The freq. has to be high enough to hit the tiny nuggets but low enough to penetrate the high mineralized ground often found in gold country. My detector selection when it comes to the freq. is based more on where I hunt more so than what I'm hunting for. This is my story and I'm sticking to it but I have been wrong before. Just ask my wife.

 

[Larry (IL)]

Crazyman is not so crazy.................well done.

 

[crazyman]

Using the "Crazy Card" has come in handy a time or two.

 

[Uncle Willy]

Yeah he nailed it pretty good.

Bill

 

[rmptr]