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#1
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"Cecil Moore" wrote in message
... Fred W4JLE wrote: I am sure you did Cecil, however I understood the question to be a shorter single element mobile antenna. Well, that's why I asked for a definition of "better". And he didn't say a "single element" was better so a 10-element beam might be the way to go. :-) -- 73, Cecil http://www.qsl.net/w5dxp Sorry - let me elaborate *why* I posted the question. I wanted to know if it was possible for any single mobile antenna less than a 1/4 wave could outperform a 10m 1/4 wave whip. Like for example a loaded 5/8 wave whip. As I understand it no whip less in size than a 1/4 wave can be more efficiant than it's larger cousin due to resisitave losses in the loading coil. Right or wrong? Long answer is OK. :-) -- 73's es gd dx de Ken KGØWX Grid EM17ip, Flying Pigs #1055, Digital On Six #350, List Owner, Yahoo! E-groups: VX-2R & FT-857 |
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#2
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A loading coil does not make an antenna longer. It simply cancels the
capacitive reactance of a short radiator. A 5/8 wave is using the associated coil to match the impedance. Ergo if it is 5/8 it can't be shorter than a 1/4 wave. Cecil's 10 element mobile 10 meter beam aside, the answer is still NO to your original question. "Ken Bessler" wrote in message news:u1g7e.14448$up2.9536@okepread01... "Cecil Moore" wrote in message ... Fred W4JLE wrote: I am sure you did Cecil, however I understood the question to be a shorter single element mobile antenna. Well, that's why I asked for a definition of "better". And he didn't say a "single element" was better so a 10-element beam might be the way to go. :-) -- 73, Cecil http://www.qsl.net/w5dxp Sorry - let me elaborate *why* I posted the question. I wanted to know if it was possible for any single mobile antenna less than a 1/4 wave could outperform a 10m 1/4 wave whip. Like for example a loaded 5/8 wave whip. As I understand it no whip less in size than a 1/4 wave can be more efficiant than it's larger cousin due to resisitave losses in the loading coil. Right or wrong? Long answer is OK. :-) -- 73's es gd dx de Ken KGØWX Grid EM17ip, Flying Pigs #1055, Digital On Six #350, List Owner, Yahoo! E-groups: VX-2R & FT-857 |
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#3
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Fred W4JLE wrote: A loading coil does not make an antenna longer. It simply cancels the capacitive reactance of a short radiator. The other way to cancel the capacitive reactance of course, is to make the antenna longer. ac6xg |
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