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Resonance and equilibrium
On May 2, 6:24*am, "Dave" wrote:
"JIMMIE" wrote in message ... On May 1, 7:37 pm, "Dave" wrote: I dont know if Dave built it or not but I did and tested the beamwidth just as you said and got 360 degrees. Rotating it had no effect at all on signal strength. I tried it on 2M and couldnt hit the local repeater with 1 watt normally I can reach it with 100mW. I would say this classifies the antenna as a dummy load. no, i am waiting for the final tweaked design. *if you have built one to art's specs then you are probably measuring just the side/back lobes, which is a very good sign. *if it has a pencil beam on 160m, then by the time it gets to 2m the beam will probably be so thin that it will be like a laser beam, so you'll have to be pointing it VERY accurately on the repeater. *so go rotate it again, very slowly and carefully, and don't forget to aim it in elevation also! Hold on. I don.t know if I have a pencil beam as I can't measure it or model it. However, I don't see that as a real hurdle! The idea that the beam width changes with frequency is beyond my ken. As for a final tweaked design, for a ham that is an impossibility |
Resonance and equilibrium
"Art Unwin" wrote in message ... Hold on. I don.t know if I have a pencil beam as I can't measure it or model it. However, I don't see that as a real hurdle! The idea that the beam width changes with frequency is beyond my ken. As for a final tweaked design, for a ham that is an impossibility but you do have one that is built to your spec right? and you can turn it by hand? so if you point it at a local AM station can you see a big increase in signal strength and a good front-back and front-side ratio?? I don't need a 'final'design, as you say that is impossible for a ham, but i'll settle for something better than a 4-square for 160m that i can turn with a normal rotor! |
Resonance and equilibrium
On May 1, 10:01*pm, Tom Ring wrote:
Richard Clark wrote: On Fri, 01 May 2009 22:37:24 GMT, "Dave" wrote: I'll make it easy, 10 degree beamwidth and 30MHz bandwidth. At how many GHz? snip Richard Clark, KB7QHC At 160m. *You can't possibly have missed that, Richard. *Art has stated it dozens of times. *Maybe hundreds. He's nuts, and very thorough about it. tom K0TAR Tom hes too thorough. I think hes just a troll, maybe he,s the real Arts grandson or something. Hes too consistent to be as blithrering as he acts. Maybe he is just some old fart that likes to stir up conversation and gets a kick out of how long of a thread he can create or how many hundred words he can get someone to write. His "antenna design" isnt origonal. I am not sure what the origonal source was but I know at one time it was used as a joke among CBers. They would describe it to some newbie and get him to build it and put it up on a tower and make him jump through as many hoops as possible to get it to work. So maybe he is just one of those from the CB usegroup having fun with hams. Jimmie |
Resonance and equilibrium
On May 2, 12:07*pm, "Dave" wrote:
"Art Unwin" wrote in message ... Hold on. I don.t know if I have a pencil beam as I can't measure it or model it. However, I don't see that as a real hurdle! The idea that the beam width changes with frequency is beyond my ken. *As for a final tweaked design, for a ham that is an impossibility but you do have one that is built to your spec right? *and you can turn it by hand? *so if you point it at a local AM station can you see a big increase in signal strength and a good front-back and front-side ratio?? *I don't need a 'final'design, as you say that is impossible for a ham, but i'll settle for something better than a 4-square for 160m that i can turn with a normal rotor! Yes you are correct. But I am waiting for some remote relays for the rotator scan and asmith control and some other things with respect to the antenna. Ordered from China so it will take a bit more than a week from now, then I can do as you say. For beam width changes I also need a adjustment contraption to change up or down from what I have now but that is a summer job ie bells and whistles. I have Jim's sample antenna packed and ready to go and he is probably more experienced in that area, when I receive his address via e mail, it is packed in a priority mail container. He can pass on what it does but without comment with respect to construction. Construction details are private and I am not going to disclose those until there is a climate change. At the moment Jim is the only guy I can trust on the newsgroup and the only guy I have great confidence in so if he provides a finding I can believe it as it will be specific and to the point As far as the four square goes without change in azmith I don't believe it can compete but we will see. Having a get away week end at the moment with the wife antennas have been put to one side. Art |
Resonance and equilibrium
On May 2, 12:34*pm, JIMMIE wrote:
On May 1, 10:01*pm, Tom Ring wrote: Richard Clark wrote: On Fri, 01 May 2009 22:37:24 GMT, "Dave" wrote: I'll make it easy, 10 degree beamwidth and 30MHz bandwidth. At how many GHz? snip Richard Clark, KB7QHC At 160m. *You can't possibly have missed that, Richard. *Art has stated it dozens of times. *Maybe hundreds. He's nuts, and very thorough about it. tom K0TAR Tom hes too thorough. I think hes just a troll, maybe he,s the real Arts grandson or something. Hes too consistent to be as blithrering as he acts. Maybe he is just some old fart that likes to stir up conversation and gets a kick out of how long of a thread he can create or how many hundred words he can get someone to write. * His "antenna design" isnt origonal. I am not sure what the origonal source was but I know at one time it was used as a joke among CBers. They would describe it to some newbie and get him to build it and put it up on a tower and make him jump through as many hoops as possible to get it to work. So maybe he is just one of those from the CB usegroup having fun with hams. Jimmie To deliberatly try to deceive one that wishes to learn is totally dishonest.! I try to be a gentleman at all times by trying to walk in other peoples shoes. |
Resonance and equilibrium
On May 1, 9:20*pm, Art Unwin wrote:
On May 1, 7:35*pm, JIMMIE wrote: - Show quoted text - ...I was intent on sharing all with my fellow hams but after the pilloring of the Dr who came on board so that he could help with the problems that the group were having with mathematics and Maxwell it appeared to me that most thought all was known about antennas thus all is known about mine. Yes, I remember the "Dr." (or perhaps doctoral candidate) from MIT who jumped in and remarked that according to his model, when you mathematically 'freeze' the motion of charge to a single point in time (t = x seconds), that, glory be, Gauses law of statics (preservation of charge) still holds true according to his computer results. This may be of mild interest to scientists who question if the charge would be preserved statically (perhaps some energy must be lost to the dynamic motion of charge for example), it had nothing to do with what you were writing. Once the "poor Dr." saw what you were up to, he politely decided to exit stage right never to return again. |
Resonance and equilibrium
On May 2, 3:00*pm, wrote:
On May 1, 9:20*pm, Art Unwin wrote: On May 1, 7:35*pm, JIMMIE wrote: - Show quoted text - ...I was intent on sharing all with my fellow hams but after the pilloring of the Dr who came on board so that he could help with the problems that the group were having with mathematics and Maxwell it appeared to me that most thought all was known about antennas thus all is known about mine. Yes, I remember the "Dr." (or perhaps doctoral candidate) from MIT who jumped in and remarked that according to his model, when you mathematically 'freeze' the motion of charge to a single point in time (t = x seconds), that, glory be, Gauses law of statics (preservation of charge) still holds true according to his computer results. This may be of mild interest to scientists who question if the charge would be preserved statically (perhaps some energy must be lost to the dynamic motion of charge for example), it had nothing to do with what you were writing. Once the "poor Dr." saw what you were up to, he politely decided to exit stage right never to return again. Why do you keep coming back with different names and different packs of lies John E Davis can be found at his home page @space,mit edu where he can himself tell you that you are lieing. Better still, read the archives of this newsgroup for the truth We all know who and what you are. You can run but you can't hide. plonk |
Resonance and equilibrium
Art Unwin wrote:
Many times things go out one ear and out the other, perforated ear drums does that for you. I am sorry to hear that you have perforarated eardrums. I know it's painful. From what you stated on Maxwell it is obvious that my logic on every thing is not acceptable to you. And yet thru the years nobody has pointed out an error in my statements. I have said nothing about Maxwell here. Ever. And you are correct at least in your own mind since you have stuck with planar designs despite its contradictions with Maxwell. You have not even a tiny idea of my antenna designs, especially since most that have been even hinted at on the internet were under my old callsign. tom K0TAR |
Resonance and equilibrium
On May 2, 5:12*pm, Tom Ring wrote:
Art Unwin wrote: Many times things go out one ear and out the other, perforated ear drums does that for you. I am sorry to hear that you have perforarated eardrums. *I know it's painful. From what you stated on Maxwell it is obvious that my logic on every thing is not acceptable to you. And yet thru the years nobody has pointed out an error in my statements. I have said nothing about Maxwell here. *Ever. * And you are correct at least in your own mind since you have stuck with planar designs despite its contradictions with Maxwell. You have not even a tiny idea of my antenna designs, especially since most that have been even hinted at on the internet were under my old callsign. tom K0TAR Then why are you here. Are you a judge? You always appear depressed or mean spirited. Maybe when you hinted on your designs you got slammed. I am fairly sure that they did not follow the edicts of Maxwell. |
Resonance and equilibrium
Art Unwin wrote:
Then why are you here. I assume that was a question. You have continuing issues with punctuation. I am here to learn about antennas. Unlike yourself. Are you a judge? You always appear depressed or mean spirited. Nope on the judge. I merely apply "common physics" to know you are thinking in the "imaginary plane". And mean spirited? What have I ever said to you, as opposed to Richard, that could be presumed to be mean spirited? Google has all of it recorded forever more. SHOW ME! Maybe when you hinted on your designs you got slammed. My designs have taken first place in several antenna competitions in the "non-commercial" category. And sometimes first second third and fourth in the same one. Almost always first place in every band I entered one which was as many as 3 at an event. For lousy common style engineered antennas,as opposed to your whizbang revolutionary ones, I've done okay I guess. I am fairly sure that they did not follow the edicts of Maxwell. I wouldn't know, since you seem to be the only one who has a copy of his edicts. tom K0TAR |
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