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Radiation and dummy loads
"Art Unwin" wrote in message
... On Jul 5, 1:32 pm, "Dave" wrote: "Art Unwin" wrote in message ... On Jul 5, 11:47 am, "Dave" wrote: "Art Unwin" wrote in message ... On Jul 5, 8:21 am, "Richard Fry" wrote: "Art Unwin" wrote On Jul 4, 5:29 pm, rick frazier wrote: Not sure where you get the swr repetitive over a band of frequencies stuff, (perhaps I don't read enough of the group messages) but to reply relative to dummy loads in general.... This comes from the radiator listed on my page unwinantennas.com/ _______________________ Art - The most important measure of an antenna is the amount of field intensity it can produce at a given distance in a given direction, per watt of applied r-f power. So far you have written nothing specific about this for the "Unwin" antenna. Note that a transmission line feeding a 20 dB series attenuator attached to the input of a 100% efficient antenna will show very high return loss to the r-f source ( 40 dB plus the twice the cable loss). But that antenna system will radiate little of the available EM energy, nonetheless. Could you please comment on the measured or at least the calculated RADIATION CHARACTERISTICS of your antenna, compared to a matched 1/2-wave dipole at that frequency (or an isotropic radiator), and tell us how you arrived at them? If you can do that, and your results can be scientifically duplicated by others, you will have removed the source of a lot of the skepticism you read here and in your similar threads on eHam.net. Otherwise it will be "more of the same," which (let us hope) is or should not be your goal. RF No.More of the same is not my goal nor is it to respond to every request. The mathematision or doctorrate type can do it solely by mathematics. The computor program is built on those mathematics. and a antenna program will ALWAYs produce radiators in equilibrium which means at an angle. Even without a optimiser you can do it on Eznec but it would be laborious but it can be done. People are enamoured with the Yagi so thay always insert planar type figures thus the program which is designed around equilibrium. If the goal is small efficient radiators then equilibrium must be present starting with a full wavelength that can then be placed in a small volume. It is the smaller efficient radiators and arrays that I have pursued since radiation per unit length is solely a measure that correlates with resistivity and it is that where my conclusions lie. Gain itself is a whole different matter cannot show it's worth in other words, he hasn't, he won't, and he doesn't care... therefore, more of the same handwaving and meaningless bafflegab. he doesn't have the math background to present his theory in any kind of a coherent form, nor of course could he ever measure his neutrino/carbon vortex crud because it doesn't exist, so he keeps going back to the same old crap... its not even funny any more, just sad. David, at this stage in life it would very difficult for me to go thru the math from the start in the exercise of adding a a radiator and a time varying field to a Gaussian field to show it is the same asMaxwell equation, very few of us are. But when you come across a theorem that makes sense to you it is gravy added when a mathematician comes along to supply the mathematics which you can follow in part. Then when antenna computor programs supply the ingredients of such an analysis which proves the same you have to get excited. When you then apply what is revealed in such a trail and succeed in making a smaller antenna that anybody has made you stop questioning what you have found. As an aside, where do you view the atributes of an antenna with near constant SWR reponse would find most use. I know most will jump to dummy load but this I ask in serious form. I already gave you the quote that shows that Gauss's Law is part of Maxwell's equations already, you need no math for that. and since all the antenna design programs are based on Maxwell's equations they of course comply with Gauss's law... nothing exciting there. the only use for a constant swr is to keep modern transceivers, that don't have a tuner, happy. swr has no correlation to performance of an antenna as far as gain or f/b or takeoff angle, things that are important to antenna design. i can take any antenna and give it a flat swr, there used to be a tuner on the market that did just that, until the league lab x-rayed it and found it was nothing but a dummy load potted in epoxy. the funny thing is, people liked it because it did exactly as it claimed, gave a perfect match across a wide frequency range... they didn't care that it turned a good percentage of their power into heat. so air cooled dummy loads as antennas can work, as long as you don't have anything better to compare it to... but I do, so I don't want one. David ,Gauss did a lot of work in his life time for which he is recognised. Are you saying that the "Gaussian law of static" was a prime mover of Maxwells laws. If this is so why does not Maxwells laws provide the role of particles in radiation? From my view point Gauss's contribution was supplied in other ways that did not include the statics law but then I look forward to you showing me where I am wrong well, your point of view is wrong. |
Radiation and dummy loads
On Jul 5, 4:15 pm, "Dave" wrote:
"Art Unwin" wrote in message ... On Jul 5, 1:32 pm, "Dave" wrote: "Art Unwin" wrote in message ... On Jul 5, 11:47 am, "Dave" wrote: "Art Unwin" wrote in message ... On Jul 5, 8:21 am, "Richard Fry" wrote: "Art Unwin" wrote On Jul 4, 5:29 pm, rick frazier wrote: Not sure where you get the swr repetitive over a band of frequencies stuff, (perhaps I don't read enough of the group messages) but to reply relative to dummy loads in general.... This comes from the radiator listed on my page unwinantennas.com/ _______________________ Art - The most important measure of an antenna is the amount of field intensity it can produce at a given distance in a given direction, per watt of applied r-f power. So far you have written nothing specific about this for the "Unwin" antenna. Note that a transmission line feeding a 20 dB series attenuator attached to the input of a 100% efficient antenna will show very high return loss to the r-f source ( 40 dB plus the twice the cable loss). But that antenna system will radiate little of the available EM energy, nonetheless. Could you please comment on the measured or at least the calculated RADIATION CHARACTERISTICS of your antenna, compared to a matched 1/2-wave dipole at that frequency (or an isotropic radiator), and tell us how you arrived at them? If you can do that, and your results can be scientifically duplicated by others, you will have removed the source of a lot of the skepticism you read here and in your similar threads on eHam.net. Otherwise it will be "more of the same," which (let us hope) is or should not be your goal. RF No.More of the same is not my goal nor is it to respond to every request. The mathematision or doctorrate type can do it solely by mathematics. The computor program is built on those mathematics. and a antenna program will ALWAYs produce radiators in equilibrium which means at an angle. Even without a optimiser you can do it on Eznec but it would be laborious but it can be done. People are enamoured with the Yagi so thay always insert planar type figures thus the program which is designed around equilibrium. If the goal is small efficient radiators then equilibrium must be present starting with a full wavelength that can then be placed in a small volume. It is the smaller efficient radiators and arrays that I have pursued since radiation per unit length is solely a measure that correlates with resistivity and it is that where my conclusions lie. Gain itself is a whole different matter cannot show it's worth in other words, he hasn't, he won't, and he doesn't care... therefore, more of the same handwaving and meaningless bafflegab. he doesn't have the math background to present his theory in any kind of a coherent form, nor of course could he ever measure his neutrino/carbon vortex crud because it doesn't exist, so he keeps going back to the same old crap... its not even funny any more, just sad. David, at this stage in life it would very difficult for me to go thru the math from the start in the exercise of adding a a radiator and a time varying field to a Gaussian field to show it is the same asMaxwell equation, very few of us are. But when you come across a theorem that makes sense to you it is gravy added when a mathematician comes along to supply the mathematics which you can follow in part. Then when antenna computor programs supply the ingredients of such an analysis which proves the same you have to get excited. When you then apply what is revealed in such a trail and succeed in making a smaller antenna that anybody has made you stop questioning what you have found. As an aside, where do you view the atributes of an antenna with near constant SWR reponse would find most use. I know most will jump to dummy load but this I ask in serious form. I already gave you the quote that shows that Gauss's Law is part of Maxwell's equations already, you need no math for that. and since all the antenna design programs are based on Maxwell's equations they of course comply with Gauss's law... nothing exciting there. the only use for a constant swr is to keep modern transceivers, that don't have a tuner, happy. swr has no correlation to performance of an antenna as far as gain or f/b or takeoff angle, things that are important to antenna design. i can take any antenna and give it a flat swr, there used to be a tuner on the market that did just that, until the league lab x-rayed it and found it was nothing but a dummy load potted in epoxy. the funny thing is, people liked it because it did exactly as it claimed, gave a perfect match across a wide frequency range... they didn't care that it turned a good percentage of their power into heat. so air cooled dummy loads as antennas can work, as long as you don't have anything better to compare it to... but I do, so I don't want one. David ,Gauss did a lot of work in his life time for which he is recognised. Are you saying that the "Gaussian law of static" was a prime mover of Maxwells laws. If this is so why does not Maxwells laws provide the role of particles in radiation? From my view point Gauss's contribution was supplied in other ways that did not include the statics law but then I look forward to you showing me where I am wrong well, your point of view is wrong. O.K. you sound like you have the facts in front of you so I have no alternative to do some research on the matter. You could have saved me a lot of work if you pointed to a book or something but I will dig anyway. I will be gone for a while to see if I can find what you are looking at. But then you have a reputation for lying so you may have nothing but bluster! |
Radiation and dummy loads
"Art Unwin" wrote in message ... On Jul 5, 4:15 pm, "Dave" wrote: "Art Unwin" wrote in message ... On Jul 5, 1:32 pm, "Dave" wrote: "Art Unwin" wrote in message ... On Jul 5, 11:47 am, "Dave" wrote: "Art Unwin" wrote in message ... On Jul 5, 8:21 am, "Richard Fry" wrote: "Art Unwin" wrote On Jul 4, 5:29 pm, rick frazier wrote: Not sure where you get the swr repetitive over a band of frequencies stuff, (perhaps I don't read enough of the group messages) but to reply relative to dummy loads in general.... This comes from the radiator listed on my page unwinantennas.com/ _______________________ Art - The most important measure of an antenna is the amount of field intensity it can produce at a given distance in a given direction, per watt of applied r-f power. So far you have written nothing specific about this for the "Unwin" antenna. Note that a transmission line feeding a 20 dB series attenuator attached to the input of a 100% efficient antenna will show very high return loss to the r-f source ( 40 dB plus the twice the cable loss). But that antenna system will radiate little of the available EM energy, nonetheless. Could you please comment on the measured or at least the calculated RADIATION CHARACTERISTICS of your antenna, compared to a matched 1/2-wave dipole at that frequency (or an isotropic radiator), and tell us how you arrived at them? If you can do that, and your results can be scientifically duplicated by others, you will have removed the source of a lot of the skepticism you read here and in your similar threads on eHam.net. Otherwise it will be "more of the same," which (let us hope) is or should not be your goal. RF No.More of the same is not my goal nor is it to respond to every request. The mathematision or doctorrate type can do it solely by mathematics. The computor program is built on those mathematics. and a antenna program will ALWAYs produce radiators in equilibrium which means at an angle. Even without a optimiser you can do it on Eznec but it would be laborious but it can be done. People are enamoured with the Yagi so thay always insert planar type figures thus the program which is designed around equilibrium. If the goal is small efficient radiators then equilibrium must be present starting with a full wavelength that can then be placed in a small volume. It is the smaller efficient radiators and arrays that I have pursued since radiation per unit length is solely a measure that correlates with resistivity and it is that where my conclusions lie. Gain itself is a whole different matter cannot show it's worth in other words, he hasn't, he won't, and he doesn't care... therefore, more of the same handwaving and meaningless bafflegab. he doesn't have the math background to present his theory in any kind of a coherent form, nor of course could he ever measure his neutrino/carbon vortex crud because it doesn't exist, so he keeps going back to the same old crap... its not even funny any more, just sad. David, at this stage in life it would very difficult for me to go thru the math from the start in the exercise of adding a a radiator and a time varying field to a Gaussian field to show it is the same asMaxwell equation, very few of us are. But when you come across a theorem that makes sense to you it is gravy added when a mathematician comes along to supply the mathematics which you can follow in part. Then when antenna computor programs supply the ingredients of such an analysis which proves the same you have to get excited. When you then apply what is revealed in such a trail and succeed in making a smaller antenna that anybody has made you stop questioning what you have found. As an aside, where do you view the atributes of an antenna with near constant SWR reponse would find most use. I know most will jump to dummy load but this I ask in serious form. I already gave you the quote that shows that Gauss's Law is part of Maxwell's equations already, you need no math for that. and since all the antenna design programs are based on Maxwell's equations they of course comply with Gauss's law... nothing exciting there. the only use for a constant swr is to keep modern transceivers, that don't have a tuner, happy. swr has no correlation to performance of an antenna as far as gain or f/b or takeoff angle, things that are important to antenna design. i can take any antenna and give it a flat swr, there used to be a tuner on the market that did just that, until the league lab x-rayed it and found it was nothing but a dummy load potted in epoxy. the funny thing is, people liked it because it did exactly as it claimed, gave a perfect match across a wide frequency range... they didn't care that it turned a good percentage of their power into heat. so air cooled dummy loads as antennas can work, as long as you don't have anything better to compare it to... but I do, so I don't want one. David ,Gauss did a lot of work in his life time for which he is recognised. Are you saying that the "Gaussian law of static" was a prime mover of Maxwells laws. If this is so why does not Maxwells laws provide the role of particles in radiation? From my view point Gauss's contribution was supplied in other ways that did not include the statics law but then I look forward to you showing me where I am wrong well, your point of view is wrong. O.K. you sound like you have the facts in front of you so I have no alternative to do some research on the matter. You could have saved me a lot of work if you pointed to a book or something but I will dig anyway. I will be gone for a while to see if I can find what you are looking at. But then you have a reputation for lying so you may have nothing but bluster! i quoted you chapter and verse, there's nothing else i can do. |
Radiation and dummy loads
On Jul 5, 5:49 pm, "Dave" wrote:
"Art Unwin" wrote in message ... On Jul 5, 4:15 pm, "Dave" wrote: "Art Unwin" wrote in message ... On Jul 5, 1:32 pm, "Dave" wrote: "Art Unwin" wrote in message ... On Jul 5, 11:47 am, "Dave" wrote: "Art Unwin" wrote in message ... On Jul 5, 8:21 am, "Richard Fry" wrote: "Art Unwin" wrote On Jul 4, 5:29 pm, rick frazier wrote: Not sure where you get the swr repetitive over a band of frequencies stuff, (perhaps I don't read enough of the group messages) but to reply relative to dummy loads in general.... This comes from the radiator listed on my page unwinantennas.com/ _______________________ Art - The most important measure of an antenna is the amount of field intensity it can produce at a given distance in a given direction, per watt of applied r-f power. So far you have written nothing specific about this for the "Unwin" antenna. Note that a transmission line feeding a 20 dB series attenuator attached to the input of a 100% efficient antenna will show very high return loss to the r-f source ( 40 dB plus the twice the cable loss). But that antenna system will radiate little of the available EM energy, nonetheless. Could you please comment on the measured or at least the calculated RADIATION CHARACTERISTICS of your antenna, compared to a matched 1/2-wave dipole at that frequency (or an isotropic radiator), and tell us how you arrived at them? If you can do that, and your results can be scientifically duplicated by others, you will have removed the source of a lot of the skepticism you read here and in your similar threads on eHam.net. Otherwise it will be "more of the same," which (let us hope) is or should not be your goal. RF No.More of the same is not my goal nor is it to respond to every request. The mathematision or doctorrate type can do it solely by mathematics. The computor program is built on those mathematics. and a antenna program will ALWAYs produce radiators in equilibrium which means at an angle. Even without a optimiser you can do it on Eznec but it would be laborious but it can be done. People are enamoured with the Yagi so thay always insert planar type figures thus the program which is designed around equilibrium. If the goal is small efficient radiators then equilibrium must be present starting with a full wavelength that can then be placed in a small volume. It is the smaller efficient radiators and arrays that I have pursued since radiation per unit length is solely a measure that correlates with resistivity and it is that where my conclusions lie. Gain itself is a whole different matter cannot show it's worth in other words, he hasn't, he won't, and he doesn't care... therefore, more of the same handwaving and meaningless bafflegab. he doesn't have the math background to present his theory in any kind of a coherent form, nor of course could he ever measure his neutrino/carbon vortex crud because it doesn't exist, so he keeps going back to the same old crap... its not even funny any more, just sad. David, at this stage in life it would very difficult for me to go thru the math from the start in the exercise of adding a a radiator and a time varying field to a Gaussian field to show it is the same asMaxwell equation, very few of us are. But when you come across a theorem that makes sense to you it is gravy added when a mathematician comes along to supply the mathematics which you can follow in part. Then when antenna computor programs supply the ingredients of such an analysis which proves the same you have to get excited. When you then apply what is revealed in such a trail and succeed in making a smaller antenna that anybody has made you stop questioning what you have found. As an aside, where do you view the atributes of an antenna with near constant SWR reponse would find most use. I know most will jump to dummy load but this I ask in serious form. I already gave you the quote that shows that Gauss's Law is part of Maxwell's equations already, you need no math for that. and since all the antenna design programs are based on Maxwell's equations they of course comply with Gauss's law... nothing exciting there. the only use for a constant swr is to keep modern transceivers, that don't have a tuner, happy. swr has no correlation to performance of an antenna as far as gain or f/b or takeoff angle, things that are important to antenna design. i can take any antenna and give it a flat swr, there used to be a tuner on the market that did just that, until the league lab x-rayed it and found it was nothing but a dummy load potted in epoxy. the funny thing is, people liked it because it did exactly as it claimed, gave a perfect match across a wide frequency range... they didn't care that it turned a good percentage of their power into heat. so air cooled dummy loads as antennas can work, as long as you don't have anything better to compare it to... but I do, so I don't want one. David ,Gauss did a lot of work in his life time for which he is recognised. Are you saying that the "Gaussian law of static" was a prime mover of Maxwells laws. If this is so why does not Maxwells laws provide the role of particles in radiation? From my view point Gauss's contribution was supplied in other ways that did not include the statics law but then I look forward to you showing me where I am wrong well, your point of view is wrong. O.K. you sound like you have the facts in front of you so I have no alternative to do some research on the matter. You could have saved me a lot of work if you pointed to a book or something but I will dig anyway. I will be gone for a while to see if I can find what you are looking at. But then you have a reputation for lying so you may have nothing but bluster! i quoted you chapter and verse, there's nothing else i can do. The two laws of Gauss used in Maxwell are not laws with respect to particles. I am now researching Heaviside to see if there is some derivitation there But now I see you are playing games.It is just not true! I see that Feynman got the Nobel prize for describing the particals as Bosuns and "w:"which is a very long way from the gauusian trail of static particles! So I will stop there as you are just playing games with the truth The bottom line is that the magnetic field created by Foucault current is the weak force in the Classic model and it was me that found it where Einstein and others failed. You just can't take that fact away from me. Really that is how it should have been with Maxwell and Heaviside and now me being born in the UK it is just a natural progression Eat your heart out Art Unwin KB9MZ unwinantennas.com/ |
Radiation and dummy loads
" But now I see you are playing games.It is just not true! I see that Feynman got the Nobel prize for describing the particals as Bosuns and "w:"which is a very long way from the gauusian trail of static particles! So I will stop there as you are just playing games with the truth The bottom line is that the magnetic field created by Foucault current is the weak force in the Classic model and it was me that found it where Einstein and others failed. You just can't take that fact away from me. Really that is how it should have been with Maxwell and Heaviside and now me being born in the UK it is just a natural progression Eat your heart out Art Unwin KB9MZ unwinantennas.com/" Art, You may be fond of the idea that you are being persecuted because of your being English, or from the UK, how ever you want to put it. If so, then I'm sorry to disappoint you, but your birth place has very little to do with how, I would suspect, most people think of you. (I'm also sure that part of the 'problem' has to do with translating between "King's/Queen's" English and what is spoken in the USA. Sorry 'bout that, but that's normal for any two languages. It works in the other direction too, so you are not alone.) You are your own worst enemy as far as being taken seriously. You probably have no difficulty in 'following' your train of reasoning, but us 'lesser' people do have that problem. How about helping us with that problem? I have a suspicion that it will take a lot of time and work on your part (as in book sized volume?). But, unless you want it to take 'for ever' for you to be understood, it's going to take that effort. If we can't follow your train of logic, you're just not gonna sell many tickets to ride that train. So, it's up to you. - 'Doc (I came to the realization that I wasn't ever going to be in the same 'class' as Einstein, Maxwell, and Heaviside a long time ago. And quite frankly, it doesn't bother me. Sort of like winning the lottery, first I have to buy a ticket, and I'm too cheap. What abilities I have just don't 'lean' in that direction.) |
Radiation and dummy loads
On Jul 6, 7:14 pm, wrote:
Doc most posters who disagree with Art on this thread at least put up an alternative to Art's claim's, you on the other hand have nothing to offer as usual, so instead you attack the man as you did in times past to no effect. The fellow ******* who used to follow are no longer around, you are on your own!. In my neck of the woods Doc's who are not on top of their subjects are known as quack's, so I suggest before you post again you bone up on the subject in question, or are you so far out of your depth that you are only able to attack the man?. |
Radiation and dummy loads
Art wrote:
"If this is so, why do not Maxwell`s laws provide the role of particles in radiation?" Maxwell`s equarions adequately describe electrical behavior without resort to particles. Art should read "Radio-Electronic Transmission Fundamentals" by B. Whitfield Griffith, Jr. Its first chapter is: "A Brief History of Electrical Knowledge". Maxwell`s equations are covered in Chapter 38, "The Mechanism of Radiation". On page 9, Griffirh wrote: "Maxwell studied deeply the equations he had written and noted that they were similar in form to equations which were used to express the motion of waves in water. This made it clear to him that electromagnetic waves could exist, and he was able to calculate the speed at which they would travel. Best regards, Richard Harrison, KB5WZI |
Radiation and dummy loads
On Jul 6, 11:30 am, (Richard Harrison)
wrote: Art wrote: "If this is so, why do not Maxwell`s laws provide the role of particles in radiation?" Maxwell`s equarions adequately describe electrical behavior without resort to particles. Art should read "Radio-Electronic Transmission Fundamentals" by B. Whitfield Griffith, Jr. Its first chapter is: "A Brief History of Electrical Knowledge". Maxwell`s equations are covered in Chapter 38, "The Mechanism of Radiation". On page 9, Griffirh wrote: "Maxwell studied deeply the equations he had written and noted that they were similar in form to equations which were used to express the motion of waves in water. This made it clear to him that electromagnetic waves could exist, and he was able to calculate the speed at which they would travel. Best regards, Richard Harrison, KB5WZI And did he mention the role of stati cs or particles in radiation? I keep on reading that radiation is not fully understood in present day books! Give me a book that does understand and provide the role of particles and then make us all happy |
Radiation and dummy loads
Art wrote:
"I keep reading that radiatiation is not fully understood in present day books!" Maybe so, but it is good enough for near perfect design of practical antennas. Best regards, Richard Harrison, KB5WZI |
Radiation and dummy loads
Richard Harrison wrote:
Art wrote: "I keep reading that radiatiation is not fully understood in present day books!" Maybe so, but it is good enough for near perfect design of practical antennas. Best regards, Richard Harrison, KB5WZI It could be said also that it is good enough for practical design of near perfect antennas. All of Art's voo-doo theory cannot hold even a candle to either concept! Dean -- W4IHK |
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