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acepilot wrote:
As long as you use resonant dipoles, current and voltage will be in phase in its respective dipole, so the impedance will not change. This isn't always true. The feedpoint impedances of two resonant dipoles when phased together are not usually resistive. For instance using EZNEC: A 33 ft. dipole at 66 ft. has a feedpoint impedance of 70+j0 ohms on 7.298 MHz. Two 33 ft. dipoles at 66 ft. spaced 33 ft. apart and fed 90 degrees out of phase have the following feedpoint impedances on 7.298 MHz: 109+j34 29-j33 Please describe how you would achieve equal magnitude currents 90 degrees apart into those dipoles given those feedpoint impedances. -- 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 100,000 Newsgroups - 19 Different Servers! =----- |
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