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art wrote:
On 7 Nov, 07:07, John Smith wrote: art wrote: Most hams who strive for maximum radiation that is horizontally polarised place the radiator parallel to the earths surface. That is an example of herd mentallity. When the vectors of radiation fields and "curl" are summated the resulting vector is NOT along the axis of the radiator. For maximum horisontally polarised radiation it is this vector that must be parallel to the earths surface. By the way Maxwell confirms this but hams chose to ignore it. Yup, herd mentallity! Art Well, that AND the fact that a 160m antenna can be difficult to vertically polarize! Regards, JS No it isn't. You slow the wave by winding helices. Buy a tesla coil (secondary coil) feed the end wires and start radiating Art Even a vertical DLM antenna can be a challenge, depending on any certain individuals property/lot, neighbors and other factors ... At 20m on down this becomes MUCH more practical ... And, most physically short antennas introduce degraded performance--the DLM being a notable exception. Regards, JS |
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