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Reg Edwards wrote:
On a long terminated non-resonant line I guess the current falls off crudely exponentially at a rate of about 1 dB per wavelength. Seems to me if we assume 1 dB per wavelength for both current and voltage and knowing the feedpoint impedance of a one WL dipole, we could calculate the characteristic impedance of the antenna at the feedpoint. Seems to me it would be essentially the same calculation as for a 1/2WL open-circuit stub where the transmission line has losses of 1 dB per wavelength and we measure a stub impedance of 5000 ohms. We could calculate the Z0 of the stub. Couldn't we use a TDR to measure the loss in an open-ended 1/2WL piece of wire? -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- |
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