Original poster: "Christopher 'CajunCoiler' Mayeux" <cajuncoiler-at-cox-dot-net> Is there a defined minimum height at which the toroid should be mounted above the uppermost secondary coil winding? If there is, what is it? And will mounting HIGHER effect performance, or is going higher just a matter of aesthetics? --- C.L. Mayeux Owner, MSB Data Systems http://www.msbdatasystems-dot-com