Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com> Hi Kreso, Sounds great to me. That would tune around 90kHz. Cheers, Terry At 05:45 AM 9/16/2003 +0200, you wrote: >So i should wind 240 mm pipe with 1400 turns of 0.77 mm wire???? Im sory but >i want to start!! > >Cheers > > >Kreso