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![]() Well, I care a great deal myself, I can't see how this would help me at all. What would you do about it? Mike, to put in perspective, and I tried to point out in the course of threading this thread, the significance is this: 1. Impact on effciency - efficiency is roughly proportional to the area under the current curve over the radiator. When the current drop across the coil is significant, that "eats" the portion of the curve and the curve above the coil is much smaller (cosine or triangle shape), less efficiency (than shown in some pictures). 2. Understanding the effect allows to better optimize the antenna performance, be it through modeling or experimenting and measuring. That's why top hats look so good. We are not talking just fraction of dB, on low bands that shows as 10s of dBs on signal. 3. Proper modeling in software will allow better design and optimization. See case of linear loaded 80m KLM beam vs. modified with loading coils, big difference in pattern and gain and performance. 4. If the modeling software can not capture the effect, than your designs of multielement loaded antennas are off. This exercise already opened my eyes wider and after I test the designs, I will hopefully come up with some better mobile antennas. Yuri |
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