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On Tue, 20 Dec 2005 03:41:41 GMT, "W. Watson"
wrote: I'm trying to make some sense out of why the emphasis of standing waves. Here is the short version: A matched transmission line behaves like the theory books say it does. The rated power from the transmitter goes through the transmission line with the lowest possible loss to the antenna where it is radiated just like the book says. A mismatched transmission just MIGHT work OK. If there is any possibility of generating interference, especially TVI, it will. The currents and voltages on a mismatched line are extreme... There MIGHT even be some sparks. Power loss will be at its worst for a given line. RF finds its way every where. Getting zapped once in a while eventually grows old to everyone. I remember the good old days when desk mikes were the only way to go. If you got too close, you got an RF zap on your lip. Solid state rigs don't tolerate a high SWR. They either protect themselves by reducing power or they require a lot of maintenance. 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 |
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