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December 28th 05, 04:48 PM
posted to rec.radio.shortwave
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Single Wire Antenna {Longwire / Random Wire Antenna} - What To Use : Antenna Tuner? and/or Pre-Selector?
On Wed, 28 Dec 2005 14:35:52 GMT, Bob Miller
wrote: "In the case of a random length, end-fed antenna, the radiation resistance at the feed point can vary over a large range, depending on the operating frequency and the actual length of the antenna. The measured radiation resistance can be as high as 5000 ohms or as low as 2 or 3 ohms..." I don't think you'll get the kilo-Ohms unless you're under a quarter wave at the frequency of interest. |
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