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Standing Waves (and Impedance)
John Ferrell wrote:
You can learn to tolerate high SWR's, but I find it worthwhile to try to keep things matched. The energy has to go somewhere, I prefer it leave here through the antenna... John Ferrell W8CCW I assume that you realize there is a high SWR on a standing- wave antenna, like a resonant 1/2WL dipole? :-) -- 73, Cecil http://www.qsl.net/w5dxp |
#2
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Standing Waves (and Impedance)
I was simply sharing my experiences from the past.
If you have followed a few of my earlier posts you are aware I am simply a student who should have been studying this many years ago. I welcome any corrections. I never gave the swr on the radiator any thought. That is a good point. .. On Wed, 21 Dec 2005 22:18:26 GMT, Cecil Moore wrote: John Ferrell wrote: You can learn to tolerate high SWR's, but I find it worthwhile to try to keep things matched. The energy has to go somewhere, I prefer it leave here through the antenna... John Ferrell W8CCW I assume that you realize there is a high SWR on a standing- wave antenna, like a resonant 1/2WL dipole? :-) John Ferrell W8CCW |
#3
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Standing Waves (and Impedance)
John Ferrell wrote:
I never gave the swr on the radiator any thought. That is a good point. Hi John, it was supposed to be humorous. I find it amusing that someone will say, "I hate high SWRs.", while running a resonant dipole with an SWR of 20:1 (or whatever) on the radiating elements. Superposition and interference between the forward waves and reflected waves on the radiating elements is what brings the feedpoint impedance of a 1/2WL dipole down to 50 ohms (or whatever). If it were not for standing waves on a 1/2WL dipole, the feedpoint impedance would be in the neighborhood of 1200 ohms, similiar to an infinite dipole. -- 73, Cecil http://www.qsl.net/w5dxp |
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