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Roy Lewallen wrote:
Dr. Slick wrote: I disagree on this point. You are caught up in the 50 Ohm world, which i admit is easy to do. The SWR is based on the ratio of the forward to the reflected power. That's not correct. The SWR (more correctly VSWR) is, by definition, the ratio of the highest to lowest voltages which appear on a line long enough to have both a maximum and minimum. It can be calculated from the forward and reverse voltage waves. ISWR, the current standing wave ratio, is numerically equal to the VSWR. For Dr. Slick: Knowing the forward and reflected powers, one can use the following equation to obtain SWR. 'Sqrt' means "square root of". SWR = [Sqrt(Pfwd)+Sqrt(Pref)]/[Sqrt(Pfwd)-Sqrt(Pref)] -- 73, Cecil http://www.qsl.net/w5dxp -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 80,000 Newsgroups - 16 Different Servers! =----- |
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