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![]() RC: Their paper reports by formula that I should see 194.5 mV/m. ... RC: No? No what? RF: No, the BL&E paper (accurately) stated that 194.5 mV/m is the theoretical maximum field possible at 1 mile for 1 kW radiated by a perfect 1/4-wave monopole over a perfect ground plane. The peak values they measured came very close, but never quite achieved that value. RC: Are you demanding an exact accounting between measured vs. modeled? If so, my model comes within 2mV/m of their graphed data (which, in its own right, does not mean they actually measured that particular cardinal point but as it encompasses their explicitly stated variables is tantalizingly close enough). If you are happy with the results of your modeling, then well and good for you. But the near-field value calculated by EZNEC and as shown in my URL is far short of the result of the BL&E study, and also of the FCC's propagation curve value for those conditions. So far neither you nor Roy has suggested that the near-field analysis I posted was based on an incorrect model, and there was enough information about it in my clip to determine that. BTW, a distance of 1 km from a 1 MHz, 1/4-wave monopole is no longer in its near field, the boundary of which in this case is less than 150 feet from the monopole. RF |
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