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#1
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![]() Let's see..............An antennas bent so that the tip is parallel to the ground?.............That represents an antenna that is now midway between horizontal and vertical polarization. Wrong. That represents an antenna with -both- horizontal and vertical polarization. Are you trying to misrepresent my statement? My statement is not wrong. A antenna bent in the above fashion is now midway between horizontal and vertical polarization. Such an antenna always has fields in both polarizations. I never stated it didn't The theoretical gain of that antenna should be equal between polarizations. When such a scenario is in place the field strength should drop to .707 of it's original. That represents a 3db loss just from this antenna being bent. Wrong. The theoretical gain of the antenna for a given polarity is a function equal to the sum of the gains of equally spaced tangents along the curve of the antenna. Not wrong at all. A diagonal antennas field strength drops to .707 of its original when the receiving antenna stays vertical. Yet you stated.................................... "vertically polarized field strength dropped by a hair." As measured by my FSM. When testing mobile antennas a 3db loss is huge. Most all well designed efficient non bent antennas will easily beat your -3db antenna. I did not say that it dropped by 3dB. The phrase "by a hair" is not my words but the words of my spotter, and both of us generally use that phrase to describe a meter shift approximately equal to the width of the needle. And since the FSM used was only a 'relative' FSM (as opposed to a CISPR quasi-peak detector), there is no way to quantify "by a hair", nor did I attempt to do so. Ok..........so your test is quantified by "hairs". Now I get it. My tests which were performed with much more detail were chastised by you. Yet your test (the hair method) gets validity. I see how this works now. |
#3
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![]() "I Am Not George" wrote in message m... "I ain't George either" wrote: "gw" wrote in message . com... (I Am Not George) wrote in message . com... "Frank Gilliland" in message-id: wrote: "itoldyouiamnotiamnotgeorge" wrote in message ... (I Am Not George) wrote in m: http://www.geocities.com/MotorCity/D...-Delmont88.jpg heheheh hehehe uhh that's cool. So is this little bro. http://www.bway.net/nambla.org/ definitely a forgery of Frank by someone who believes he is me probably twistinutts dave ..... GW, first, learn to use caps, second, crawl back under the central Texas limestone from whence you post. randy why you always attacking any one who disses twistedhed. must be those cravings for the white monster getting you irritable lol Not at all. I have had issues with Twist in the past. I don't care any more or less if you attack him. He can defend himself. You, on the other hand, are an idiot. You have no hope of defending yourself, in person or verbally. |
#4
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"I ain't George either" wrote:
"I Am Not George" wrote in message om... "I ain't George either" wrote: "gw" wrote in message . com... (I Am Not George) wrote in message . com... "Frank Gilliland" in message-id: wrote: "itoldyouiamnotiamnotgeorge" wrote in message ... (I Am Not George) wrote in m: http://www.geocities.com/MotorCity/D...-Delmont88.jpg heheheh hehehe uhh that's cool. So is this little bro. http://www.bway.net/nambla.org/ definitely a forgery of Frank by someone who believes he is me probably twistinutts dave ..... GW, first, learn to use caps, second, crawl back under the central Texas limestone from whence you post. randy why you always attacking any one who disses twistedhed. must be those cravings for the white monster getting you irritable lol Not at all. I have had issues with Twist in the past. I don't care any more or less if you attack him. He can defend himself. You, on the other hand, are an idiot. You have no hope of defending yourself, in person or verbally. how long since you last smoked crack? be honest |
#5
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![]() "I Am Not George" wrote in message m... "I ain't George either" wrote: "I Am Not George" wrote in message om... "I ain't George either" wrote: "gw" wrote in message . com... (I Am Not George) wrote in message . com... "Frank Gilliland" in message-id: wrote: "itoldyouiamnotiamnotgeorge" wrote in message ... (I Am Not George) wrote in m: http://www.geocities.com/MotorCity/D...-Delmont88.jpg heheheh hehehe uhh that's cool. So is this little bro. http://www.bway.net/nambla.org/ definitely a forgery of Frank by someone who believes he is me probably twistinutts dave ..... GW, first, learn to use caps, second, crawl back under the central Texas limestone from whence you post. randy why you always attacking any one who disses twistedhed. must be those cravings for the white monster getting you irritable lol Not at all. I have had issues with Twist in the past. I don't care any more or less if you attack him. He can defend himself. You, on the other hand, are an idiot. You have no hope of defending yourself, in person or verbally. how long since you last smoked crack? be honest Nancy and I had some last night. |
#6
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In , wrote:
Let's see..............An antennas bent so that the tip is parallel to the ground?.............That represents an antenna that is now midway between horizontal and vertical polarization. Wrong. That represents an antenna with -both- horizontal and vertical polarization. Are you trying to misrepresent my statement? My statement is not wrong. A antenna bent in the above fashion is now midway between horizontal and vertical polarization. Such an antenna always has fields in both polarizations. I never stated it didn't First off, you are making a leap from 'having both polarities' to an antenna being "midway between horizontal and vertical polarization", whatever that means. From your explanation below I can only assume you mean 'diagonal' polarization. But you can't get linear polarization from a curved radiator, and the only straight sections of the antenna were either horizontal or vertical. Maybe you can source your "midway" polarization somewhere, huh? Second, the whip has a larger diameter at the base than it does at the tip, and is therefore more flexibile at the top than at the bottom. Because of this the whip bent into a shape somewhat distorted from an ideal 90 degree arc; i.e, the point on the arc at which the tangent of the arc was 45 degrees to both vertical and horizontal was most certainly -not- "midway" between the base and tip. So even if you -could- source your "midway" polarization (and you can't) it would probably not apply in this case. Third, polarity is a 3-dimensional vectoral quantity. (Actually it's a 4-dim quantity if you include the scalar component. Regardless...) This means that the "polar compatibility" (for lack of a better term) between any two antennas is a factor not just of 'vertical' and 'horizontal', but also of wavelength/antenna length. This fact is proven all the time with the use of some long-wire antennas which, while clearly horizontal, are quite adept at receiving signals with vertical polarity; and not only that but some are most efficient when the wire is pointed directly at the source of the signal. IOW, contrary to the popular (but mistaken) notion that antenna polarity is as simple as 'vertical vs. horizontal', antennas exist which have a polarity that is perpendicular to the signal in not just one, but -two- dimensions, and they work quite well. Also, polarity is a vectoral sum, which is not a -real- quantity but an -effective- quantity. IOW, you can't bend a vertical antenna 90 degrees at the center and proclaim that the antenna has diagonal (45 degree) polarization. The fact is that you still have -seperate- vertical and horizontal polarizations, but their -sum- is 45 degrees. And that's true only in one dimension (don't forget that this is a 3-dimensional quantity). Any deviation from the one thin line that is perpendicular to both polar components and the vectoral sum (the -effective- polarity) will NOT be 45 degrees. This is not the case for a straight radiator which, at any given point, will exhibit polarity in TWO dimensions (a plane) that is fully perpendicular to the axis. Even if you -did- bend the antenna 90 degrees at the center, that's no evidence that the vertical and horizontal components will share the same signal load. In a 1/4 wave vertical the top half of the whip is primarily capacitive while the bottom half is inductive. Taken seperately the bottom half is more efficient because it conducts the most current. Bending the antenna in half would result in an antenna with a strong vertical component and a weak horizontal component (which is better than no horizontal component at all, and both results are exactly what I observed in my test). And should there be an -electrical- midpoint it would be much closer to the bottom of the whip and not above the physical 'midpoint', the latter being the case with the bend on my whip. Finally, my antenna is a 1/4 wave, stainless-steel, vertical whip (bent at the time) mounted on the front of an old Dodge truck. It is certainly not an ideal example of laboratory precision, and I never suggested it was. I did a test, I posted my observations, and I came to my conclusion based on those results. I never suggested that my test should be included in CRC's Handbook of Chemistry and Physics or Van Nostrands encyclopedia. I never declared that a straight antenna was better than a bent antenna or vice-versa. I never said that anyone should or should not bend their antenna. In fact, I made no definitive conclusion about my test other than what I stated -- the antenna had both vertical and horizontal polarity. And you agreed. The theoretical gain of that antenna should be equal between polarizations. When such a scenario is in place the field strength should drop to .707 of it's original. That represents a 3db loss just from this antenna being bent. Wrong. The theoretical gain of the antenna for a given polarity is a function equal to the sum of the gains of equally spaced tangents along the curve of the antenna. Not wrong at all. A diagonal antennas field strength drops to .707 of its original when the receiving antenna stays vertical. That's only true if the receiving antenna is a half-wavelength. Yet you stated.................................... "vertically polarized field strength dropped by a hair." As measured by my FSM. When testing mobile antennas a 3db loss is huge. Most all well designed efficient non bent antennas will easily beat your -3db antenna. I did not say that it dropped by 3dB. The phrase "by a hair" is not my words but the words of my spotter, and both of us generally use that phrase to describe a meter shift approximately equal to the width of the needle. And since the FSM used was only a 'relative' FSM (as opposed to a CISPR quasi-peak detector), there is no way to quantify "by a hair", nor did I attempt to do so. Ok..........so your test is quantified by "hairs". Now I get it. I doubt it. My tests which were performed with much more detail were chastised by you. Yet your test (the hair method) gets validity. I see how this works now. No, you don't. But you will..... The stated objective of your tests was to evaluate and quantify the performance of various antennas, drawing conclusions that could be extended beyond your testing conditions. However, the technical level of the tests exceeded the limitations of your equipment, education and experience. Your methods were less than scientific, your data was superficial and contradictory, and your conclusions were few and highly subjective. When the data from your first test didn't meet your expectations you provided excuses. Your second test proved that your excuses were wrong, so you made new excuses. Your data could not be quantified, yet you proclaimed that x antenna was better than y antenna was better than z antenna. You clearly failed to meet the objective of your tests. You don't know why you failed, so you made excuses for your failure. When you bragged about your tests in the newsgroup I evaluated your failures one by one. You then blamed -me- because you can't accept and correct your own failures. OTOH, I did a simple test for fun, posted my observations, and provided my very limited conclusion WITH WHICH YOU AGREED. So according to -YOU- my test was both valid and conclusive. Yet your obsession with me pushed you to try -- once again -- to discredit me in a technical discussion. And once again you failed. And once again you will blame me for your failure. If anything you should be asking questions instead of trying to act like some sort of radio guru (which you definitely are not). NOW do you see how this works? -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
#7
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#8
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![]() The stated objective of your tests was to evaluate and quantify the performance of various antennas, drawing conclusions that could be extended beyond your testing conditions. However, the technical level of the tests exceeded the limitations of your equipment, education and experience. Your methods were less than scientific, your data was superficial and contradictory, and your conclusions were few and highly subjective. When the data from your first test didn't meet your expectations you provided excuses. Your second test proved that your excuses were wrong, so you made new excuses. Your data could not be quantified, yet you proclaimed that x antenna was better than y antenna was better than z antenna. You clearly failed to meet the objective of your tests. You don't know why you failed, so you made excuses for your failure. When you bragged about your tests in the newsgroup I evaluated your failures one by one. You then blamed -me- because you can't accept and correct your own failures. I only stated the obvious. 1. After eliminating human error the A/B test were repeatable. 2. The SS steel whip could be beat by shorter antennas 3. The non believers could only sight theory and would never do the test themselves. OTOH, I did a simple test for fun, posted my observations, and provided my very limited conclusion WITH WHICH YOU AGREED. So according to -YOU- my test was both valid and conclusive. I only agree that if your "hair method" test is valid then my tests were even more valid. Yet your obsession with me pushed you to try -- once again -- to discredit me in a technical discussion. And once again you failed. And once again you will blame me for your failure. If anything you should be asking questions instead of trying to act like some sort of radio guru (which you definitely are not). NOW do you see how this works? Yes I do. You still don't understand that a 9' SS whip can be beat by shorter antennas. |
#10
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Steveo wrote in message ...
wrote: You still don't understand that a 9' SS whip can be beat by shorter antennas. Not by many. Which ones beat a 9 ft whip? |
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