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Roger wrote:
I tried the files and they work well. Congratulations on a clever use of zero resistance loads. I have not seen that technique used before but it certainly allows for a good EZNEC demonstration. It's a way to "measure" the current without disturbing the current. Do you see how the EZNEC current has a reference phase and thus is a "snapshot" in time? Do you see how traveling-wave current travels and standing- wave current just appears to stand there? Since EM waves cannot just stand there and must necessarily move at the speed of light, a standing-wave is just an artifact of superposition (a magical illusion for some). It has no stand-alone existence aside from its forward and reverse component EM waves that indeed do travel at the speed of light (adjusted for velocity factor). EZNEC is a great program. Yes indeed, like the Smith Chart, it is a great antenna tool. I've been a satisfied customer for 20 years, since I first purchased ELNEC. ELNEC and EZNEC have been great tutors for me. If someone doesn't want to buy it, the free demo version of EZNEC available from http://www.eznec.com is quite a free lunch and although limited to 20 segments, is very useful on wire dipoles and monopoles and learning how they work. -- 73, Cecil http://www.w5dxp.com |
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