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OCF Dipole and Window Line Choke
On Fri, 26 Jun 2009 22:07:13 -0700 (PDT), dykesc
wrote: What I am having trouble with is how to include a longwire RF energy sink at the source end of my antenna model. There are any number of alternatives, each matching the situation of "someone." They vary by rather simple to rather elaborate estimations of "ground." At least one can be found in the generous help manual. The trick is how well you know your "ground's" characteristic to sufficient accuracy. Chances are you (given you have an ad hoc design) you barely know. This, of course, translates into a model of equal imprecision. Myself, I lay out several dozen radials over an average earth and connect to it. If it is a simple dipole, I lay out a ground mat below the antenna (it does make a difference). 73's Richard Clark, KB7QHC |
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