>... ... > >I would speculate that for spacings of 1/2-1 coil diameters, the Q >degradation is low enough to be ignored. This is probably why Multronics/Cardwell positions their inductors about one coil-radius above the mounting chassis. cheerz, Eric - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end