Digging back through the archives I found lots of discussion about the "best" transformer to use with flags, pennants and beverages. The discussions included material type, and style (toroid vs. bino
discussions included material type, and style (toroid vs. binocular), but I found no mention about problems regarding the use of conventional toroid cores in which a pure resistive load on the secon
I had additional offline conversations with Rick (N6RK), and Carl (KM1H), and below is my official response to my original post about RX antenna transformer windings and complex impedance measured on
If I can add my $0.02 worth here... I have never found a better ferrite core for RX antenna transformers than the Amidon BN-73-202 (Fair-Rite 2873000202). I also used to use side-by-side stacked ferr
One missing piece in understanding what you're seeing is the fact that mu (permeability) is a complex number, u' +ju'', where u' represents the inductive component and u'' represents the loss compone
I had additional offline conversations with Rick (N6RK), and Carl (KM1H), and below is my official response to my original post about RX antenna transformer windings and complex impedance measured on
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 wrappe
So-called "self-shielding" and it's inverse, leakage flux, also depend on permeability, which in turn depends on the material and the frequency of interest. Fair-Rite data sheets for their materials