MINELAB DETECTORS

[wildlns]

Does it make a big difference about the 1.5 kHz to 25.5 kHz with the Sovereign GT and the 1.5 kHz to 100 kHz. with the Quattro MP? I don't know a lot about the detectors that are new but I would think one with a broader frequency band would be better or would that be a disadvantage? I just want to be happy...Most of the detecting will be on the beach mostly wet and dry sand on the gulf coast of Mississippi, maybe some water about a foot or so. I hope someone can answer this question for me. I would like to make my purchase tomorrow from kellycodetectors.com


thanks,
charlie WILDLNS@YAHOO.COM

 

[Cody]

There are a number of advantages to multi frequency. They can be ground balanced to soil minerals and salt at the same time. A single frequency detector can be balanced to one or the other so will have problem if there are dramatic changes in salts in the soil. A second advantage is metal responds to electromagnetic fields depending on the frequency of the field. Gold and nickel respond best to a higher frequency and silver to a lower one. A detector with both low and high frequencies therefore are more sensitivity to gold, nickel, and silver than a single frequency detector. A higher frequency electromagnetic field is attenuated more by the soil than a low one but is more sensitivity to smaller targets than a lower one. Low frequencies will penetrate the soil deeper than a higher frequency. More frequency means more sensitivity to stray RF and ground noise so better filtering is needed and one reason we see noise cancel on the Explorer. Also, the more frequencies we use to probe a target the better the discrimination in my as we can compare the ID of the target to several different know responses.

A detector like the Explorer and Sovereign has the best of the higher frequencies and lower ones combined into a single machine. It has been know by engineers that frequencies from about 1.5 kHz to 100 kHz is best for hobby detectors. It is also common knowledge that frequency from 1.5 kHz to about 25 kHz are excellent for all phases of detecting such as coin and relic hunting. The Explorer has added advantages of a two dimensional presentation of the data in both the ferrous and conductance of a target. The data is presented on a two axis display so the addition frequencies above 25 kHz are an advantage.