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"Frank" wrote As posted in a previous thread go to www.carolyns-creations.com/ve6cb to view the (modeled) current distribution on an 84" monopole at 21.3 MHz. ==================================== Frank, I don't know, and it doesn't matter, how you produced the amperes versus height graph which beautifully displayed itself with a single mouse-click on my computer screen. It displays the curve-shape which any properly educated electrical engineer, or amateur with any intuitive common sense, ought to expect. Thanks! The many reams of heated arguments which have appeared on this newsgroup have been a disgrace to the profession. Yes, I know its an amateur mewsgroup but the (aggressive?) contestents are mostly so-called professionals. Clearly you have chosen an adequate mathematical demonstration model with the ability to use it. Most likely without any thoughts about Terman or theorem-writers Thevenin and Kirchoff, etc., who personally I have hardly ever heard of. If you have not already done so, may I suggest you include radiation resistance in the model for slightly greater accuracy. It may remove the small kink in your curve which occurs immediately at the bottom end of the coil. I don't think it should be there. But further elaboration is hardly worth the effort. I also think its a good idea to base demonstration models (like actual experimental measurements) on the lower frequencies. Try the 160 metre band. They are likely to be more accurate representations. Frank, if you have the time to spare perhaps you should contribute to this newsgroup more often. Improve its already good entertainment, even educational if sometimes confusing, value! By the way, I'm on Dourthe No.1, Bordeaux 2001, tonight. French politics go down very well with their excellent wine and British very mature Cheddar cheese. Hic! ---- Reg, G4FGQ |
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