Question Regarding Detector Frequency For Jewelry Hunting

[Merv]

Ninety percent of my detecting is 'gold jewelry' hunting on dry sand beaches in florida. Is there an advantage/disadvantage in choosing a 'vlf' detector in the 17-20 khz range as opposed to other frequencies to accomplish the above? I realize most detectors will find gold jewelry but i'm wondering if specific frequencies have an advantage. I'm only interested in digging a maximum of 7".

[Steve Herschbach]

The higher the frequency the "hotter" a single frequency detector is to small gold but the more likely it is to sound off on wet salt sand. On dry sand you can use most anything but wet sand calls for lower frequency detectors, generally 15 kHz and lower. Even then most 13-15 kHz machines struggle in wet sand and therefore have salt or beach modes that define the machines to deal with the situation as it occurs.