The Fisher 5x10 DD coil hasn’t been my most favorite coil because, in my mind, it always seemed to be lacking something.  I have suddenly found myself owning several different higher frequency detectors, each equipped with a 5x10 or 6x10 DD coil.  As a result I have decided to spend some time bench marking this particular coil size.   Is the Fisher 5x10 DD coil really lacking something or is its performance in line with other brands similar size and type coils. Since my 5x10 DD coil came wi