Original poster: Vjmoritz-at-aol-dot-com Hi At what frequency is your coil resonating? If 2,400,000,000Hz is divisible by your frequency then it's quite possible that it "sucks" all the power around your coil. As a test: Touch your toroid (or better: Try to draw an arc from it) since the energy has to go somewhere. Moritz (vjmoritz-at-aol-dot-com)