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Roger Halstead wrote in message . ..
.... Ahhh...with the impedance variation I beg to differ. Otherwise how could I draw a 3 or 4 inch arc off the end of a 160 meter dipole. You're welcome to differ, but indeed you may not be differing at all. I did NOT say there was a low electrical field strength near the antenna. Rather, the field _must_be_ essentially perpendicular to the conductor, at the conductor's surface. So the potential between the antenna and a point a short distance away, along a line parallel to the electric field (that is, perpendicular to the antenna wire) may be quite high. If the electric field exceeds the breakdown voltage of air, you'll get corona. But if you see corona streamers, are they _parallel_to_ the antenna wire? I doubt it...they will almost certainly be perpendicular to the wire, where they meet the wire's surface. As I've suggested in other posts in this thread, I'll be happy to listen to explanations about fields around an antenna, but if you're going to talk about voltages between two points, be sure you specify the path along which you will measure those voltages. If you tell me there is a large voltage along a good conductor, then I know there is a very large heat dissipation in that wire. But if your meter and its leads have enclosed an area outside the wire, you have not measured the voltage along the wire, but rather around the loop composed of the wire and the meter's leads. Cheers, Tom |
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