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E/M radiation from a short vertical aerial
In rec.radio.amateur.antenna Spike wrote:
Imagine a short rod vertical aerial not connected to ground, for the (say) 160/80/60/40m bands, as might be found in a typical /M set-up, fed with RF energy and operating over ground of average conductivity. Three different waves will be launched from this: Nope; An antenna, any antenna, has a radiation pattern which is a representation of the amount of energy radiated in any particular direction. See this: http://www.antenna-theory.com/basics/radPattern.html The first pattern shown is typical for a vertical antenna. There are no "waves" in the sense you are using the word. -- Jim Pennino |
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