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#1
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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 |
#2
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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 |
#3
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"John Smith" wrote
And, most physically short antennas introduce degraded performance --the DLM being a notable exception. _____________ Just to note that the URI test report showed the standard DLM on 3.5 MHz to have about 2.33 dB less gain than the Navy's reference monopole. That means that its groundwave field was found to be about 59% that of the reference monopole. Some might consider the performance of that DLM antenna to be "degraded," compared to a standard 1/4-wave monopole using the same r-f ground. RF |
#4
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Correcting myself...
That means that its *radiated power* was found to be about 59% that of the reference monopole. Showing my work: [ 1/(10^(2.33/20)) ]^2 = 0.585, approx RF |
#5
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A herd of two:
On Wed, 07 Nov 2007 07:16:44 -0800, art wrote: On 7 Nov, 07:07, John Smith wrote: a 160m antenna can be difficult to vertically polarize! No it isn't. On Wed, 07 Nov 2007 07:23:03 -0800, John Smith wrote: Even a vertical DLM antenna can be a challenge .... the DLM being a notable exception. You two crack me up. Do you guys butter your toast on both sides so when it falls to the ground only one side gets fuzzy? At least the fuzzy side doesn't degrade masticating efficiency by sticking to the roof of your mouth. |
#6
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Richard Clark wrote:
... You two crack me up. Do you guys butter your toast on both sides so when it falls to the ground only one side gets fuzzy? At least the fuzzy side doesn't degrade masticating efficiency by sticking to the roof of your mouth. As Richard Fry has pointed out, the Navys' data is available to all ... Regards, JS |
#7
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On 7 Nov, 07:46, Richard Clark wrote:
A herd of two: On Wed, 07 Nov 2007 07:16:44 -0800, art wrote: On 7 Nov, 07:07, John Smith wrote: a 160m antenna can be difficult to vertically polarize! No it isn't. On Wed, 07 Nov 2007 07:23:03 -0800, John Smith wrote: Even a vertical DLM antenna can be a challenge ... the DLM being a notable exception. You two crack me up. Do you guys butter your toast on both sides so when it falls to the ground only one side gets fuzzy? At least the fuzzy side doesn't degrade masticating efficiency by sticking to the roof of your mouth. You crack me up too I was just reading all your posts to John E Davis on the gauss statics law all over again. All handwaving about mathematics but you presented nothing that over rides his math. No math or is it no mass? You got your adults degree based on your journeys in the Navy but that didn't provide you with a mathematics regimen to fault Davis did it? You never wrote anything that wasn't "fuzzy" Whant to prove my initial post in error or return to your fuzzy logic suitably scrambled so that it cannot be deciferred? Try proving my initial post on this thread is in error but then you can't so you will resort to handwaving. Yes, Krauss, Maxwell Gauss and many many others support it but you, you are not equipped to oppose |
#8
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On Wed, 07 Nov 2007 08:18:26 -0800, art wrote:
Try proving my initial post on this thread is in error In one sentence with fewer words than? : On Tue, 06 Nov 2007 11:04:38 -0800, art wrote: Shorten your post and just type one line. I Richard, can show the error of your mathematics Rr = 80 · pi² · (length/wavelength)² |
#9
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On 7 Nov, 08:57, Richard Clark wrote:
On Wed, 07 Nov 2007 08:18:26 -0800, art wrote: Try proving my initial post on this thread is in error In one sentence with fewer words than? : On Tue, 06 Nov 2007 11:04:38 -0800, art wrote: Shorten your post and just type one line. I Richard, can show the error of your mathematics Rr = 80 · pi² · (length/wavelength)²- Hide quoted text - - Show quoted text - Exactly, bluffing again no mass |
#10
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On Wed, 07 Nov 2007 09:41:47 -0800, art wrote:
On 7 Nov, 08:57, Richard Clark wrote: On Wed, 07 Nov 2007 08:18:26 -0800, art wrote: Try proving my initial post on this thread is in error In one sentence with fewer words than? : On Tue, 06 Nov 2007 11:04:38 -0800, art wrote: Shorten your post and just type one line. I Richard, can show the error of your mathematics Rr = 80 · pi² · (length/wavelength)² Exactly, bluffing again no mass So no mass and bluffing shows the error of Rr = 80 · pi² · (length/wavelength)² ? No one doubts that from you Arthur. Do you know what mathematics is? To this point, your theories lack equations, and lacking equations they lack results. You often fail to provide the minimum enumerated characteristics of 1. frequency; 2. wavelength; 3. angle; 4. gain; 5. resistance; 6. reactance; 7. Q; 8. voltage; 9. current. Yet and all, you claim to have a theory of RF that lacks values for each and everyone of these specifics that are rudderless in your brand of math without equations. True, you line up all these words in all the possible combinations and permutations (and sometimes even spell them right), but not always in coherent sentences and rarely punctuated correctly. Enlarge your word palette and you may one day script "Hamlet" through the same random process. However, I am glad to see you still read my comments! So that inspires me to happily slog on through your murky postings. ;-) Forge on for Queen and Country! 73's Richard Clark, KB7QHC |
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