On Thu, Oct 20, 2016 at 5:04 AM, Vic Rosenthal <k2vco....@gmail.com> wrote: > If it is vertically polarized it has a dipole-like pattern, with sharp nulls. > If horizontal, it is more or less omnidirectional. >
This is sort of incorrect. The polarization does not matter to radiation pattern. The physical orientation of the loop matters. If the plane of the loop is parallel to the ground, it is omnidirectional. If the loop is vertically oriented, it can be horizontally or vertically polarized, but in both cases, there is a sharp null in axis of the loop. (Technically, if the loop is parallel to the ground, the null points at the ground and the sky.) The vertical loop can be horizontally polarized by feeding it in the middle of the top or bottom edges. It can be vertically polarized by feeding it in the middle of the vertical edges. Changing the polarization may change elevation angle, and might affect ground wave propagated signals, but once it bounces, Faraday rotation makes polarization irrelevant. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
