On Tue, Aug 20, 2013 at 3:00 PM, Tom W8JI <[email protected]> wrote: > The ARRL in some publications, for example, teaches us toroids are > "self-shielding". In fact, many toroidal cores have significant flux > leakage. >
That is for sure. I was following a thread in an SWL or AM BCB group a few months ago, where someone (right or wrong) was recommending a toroid as an antenna in lieu of a ferrite rod with wire wrapped on it. The point is that the toroid was evidently doing a fair job of picking up signals! If it were self-shielding, that wouldn't happen. There is a great deal of stuff going on in a transformer. > You said a mouthful. I sure wish I understood more about that subject. I wrote Fair-Rite for some info over a year ago and they never replied. (for whatever reason). I need to learn some more basics that I don't presently understand. 73, Mike www.w0btu.com _________________ Topband Reflector
