I'm with pepperj. Anything under about 20 hkz is yesterday's meatloaf. The old White's I had a millennium ago was running 4-5 hkz. Then we started with the Tesoros at about 14-20hkz. Now I only use 74 khz as most of the old places have been hit with the older low frequencies and the type of targets from those old spots are pretty much gone. It's the high frequency that punches down and gets the goodies.
I'm with pepperj. Anything under about 20 hkz is yesterday's meatloaf. The old White's I had a millennium ago was running 4-5 hkz. Then we started with the Tesoros at about 14-20hkz. Now I only use 74 khz as most of the old places have been hit with the older low frequencies and the type of targets from those old spots are pretty much gone. It's the high frequency that punches down and gets the goodies.