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K7ITM wrote:
Clearly in a center-fed half-wave dipole, if there is no load at the center, the current there is quite low, and depends on the capacitance from wire end to wire end. If you short across the feedpoint, it will be resonant and the center will be a current node. Maybe you would like to rethink that, Tom. Consider a parasitic 1/2WL element on a Yagi. The currents at the ends are obviously zero. The current 1/4WL away from the zero points are the maximum current points. If you short across the feedpoint of a 1/2WL dipole, it will be resonant but the center will be a current loop (antinode), i.e. a maximum current point. The center of a *one wavelength* dipole will be a current node. -- 73, Cecil http://www.qsl.net/w5dxp |
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[question] current/voltage amplitude inducted in antenna | Antenna |