Chip, A resonant frequency of 1KHz (one THOUSAND cps) for your coil still sounds real low. How are you determining your actual frequency? I have a 4" diameter coil that's about 19" long wound with 1000 turns that tunes in at around 450 THOUSAND hertz...that's a difference of a factor of 450x between your tune and mine?!? Regardless, enjoy your new toys! They make things a whole lot easier. Steven Roys (sroys-at-radiology.ab.umd.edu)