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#1
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My gawd! Is this the same Richard Clark which I just reported to mental
health for a three day observation??? Quick, where is a phone--I will and cancel that! grin Regards -- Hay, if'n ya'll cun't konstructivly partecipete in this har disscusion, haw aboot speel-checkin it fer me? "Richard Clark" wrote in message ... On Tue, 29 Mar 2005 15:09:25 -0500, Buck wrote: How well would that work for shortening a J-Pole? would it be better to use a shortened 1/2 wave dipole or would the J-Pole design be better? Hi Buck, You may have noticed the vacuum of response - most have already seen this movie and skipped out. However, for your benefit: Like any small antenna, narrow bandwidth. Like any Hi-Z antenna, very skitterish. Like any small antenna, lower gain. For a helix standing roughly 4M tall for 40M band (which isn't particularly short) under an 8 spoke top hat 6M wide, this exhibits a drive point Z of 40000 Ohms. Put 100W into it and you will see 2KV at the connector. That should take care of grass growing nearby. EZNEC boldly announces there is loss, and the best gain is -2.6dBi. The bandwidth spanned from 7.18MHz to 7.25MHz. From there it is only a matter of adding the critical matching section. OR Throw away the helix and use a straight support, shorten the 8 spoke top hat to 4M wide and the drive point is an easier match at 13 Ohms. No lethal voltages at the drive point, lower loss, more gain (albeit of 0.65dBi), more bandwidth 7.14MHz to 7.4MHz. Still reduces to it's hardly worth the effort to change from one to the other, but all the signs point to a better implementation without the air cooled wire wound resistor. If you want to keep a coil in the picture, you can put it in the conventional place, shorten the top hat spokes yet some more, and find no more gain, and less bandwidth. OR Buy an SGC which proudly proclaims it will match a wet string. OR Throw away all this folderol, and build a full size antenna (roughly twice as tall as these gomers). No matching issue, bandwidth up the kazoo (7-7.5 MHz), no appreciable change in gain though (in other words, that imperceptible 1dB delta). All modeling performed using "Real/MiniNEC Ground" (not usually my choice, but then no one else has stepped up to the bar). OR Go watch a movie you haven't seen before, it may have a surprise in it. 73's Richard Clark, KB7QHC |
#2
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....I will call and cancel that... even!
-- Hay, if'n ya'll cun't konstructivly partecipete in this har disscusion, haw aboot speel-checkin it fer me? "John Smith" wrote in message ... My gawd! Is this the same Richard Clark which I just reported to mental health for a three day observation??? Quick, where is a phone--I will and cancel that! grin Regards -- Hay, if'n ya'll cun't konstructivly partecipete in this har disscusion, haw aboot speel-checkin it fer me? "Richard Clark" wrote in message ... On Tue, 29 Mar 2005 15:09:25 -0500, Buck wrote: How well would that work for shortening a J-Pole? would it be better to use a shortened 1/2 wave dipole or would the J-Pole design be better? Hi Buck, You may have noticed the vacuum of response - most have already seen this movie and skipped out. However, for your benefit: Like any small antenna, narrow bandwidth. Like any Hi-Z antenna, very skitterish. Like any small antenna, lower gain. For a helix standing roughly 4M tall for 40M band (which isn't particularly short) under an 8 spoke top hat 6M wide, this exhibits a drive point Z of 40000 Ohms. Put 100W into it and you will see 2KV at the connector. That should take care of grass growing nearby. EZNEC boldly announces there is loss, and the best gain is -2.6dBi. The bandwidth spanned from 7.18MHz to 7.25MHz. From there it is only a matter of adding the critical matching section. OR Throw away the helix and use a straight support, shorten the 8 spoke top hat to 4M wide and the drive point is an easier match at 13 Ohms. No lethal voltages at the drive point, lower loss, more gain (albeit of 0.65dBi), more bandwidth 7.14MHz to 7.4MHz. Still reduces to it's hardly worth the effort to change from one to the other, but all the signs point to a better implementation without the air cooled wire wound resistor. If you want to keep a coil in the picture, you can put it in the conventional place, shorten the top hat spokes yet some more, and find no more gain, and less bandwidth. OR Buy an SGC which proudly proclaims it will match a wet string. OR Throw away all this folderol, and build a full size antenna (roughly twice as tall as these gomers). No matching issue, bandwidth up the kazoo (7-7.5 MHz), no appreciable change in gain though (in other words, that imperceptible 1dB delta). All modeling performed using "Real/MiniNEC Ground" (not usually my choice, but then no one else has stepped up to the bar). OR Go watch a movie you haven't seen before, it may have a surprise in it. 73's Richard Clark, KB7QHC |
#3
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On Thu, 31 Mar 2005 23:11:04 -0800, "John Smith"
wrote: My gawd! Is this the same Richard Clark which I just reported to mental health for a three day observation??? Hi Brett, Catch a particularly interesting movie? A good one for programmers from Argentina: "Una Sombra Ya Pronto Seras" comes to mind. However, in a diverse crowd at the end of the road and for those willing to truck 2 tons of nitro over the Andes: "Le Salaire De La Peur." For Art, all of this is like sitting through "The Saragossa Manuscript." ;-) 73's Richard Clark, KB7QHC |
#4
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Err, Richard, I like the other personality better, yanno, the technical one
which imitated sanity in a believable manner? Hey, just how many of those multiple personalities do you have? But, only one sane one? Regards -- Hay, if'n ya'll cun't konstructivly partecipete in this har disscusion, haw aboot speel-checkin it fer me? "Richard Clark" wrote in message ... On Thu, 31 Mar 2005 23:11:04 -0800, "John Smith" wrote: My gawd! Is this the same Richard Clark which I just reported to mental health for a three day observation??? Hi Brett, Catch a particularly interesting movie? A good one for programmers from Argentina: "Una Sombra Ya Pronto Seras" comes to mind. However, in a diverse crowd at the end of the road and for those willing to truck 2 tons of nitro over the Andes: "Le Salaire De La Peur." For Art, all of this is like sitting through "The Saragossa Manuscript." ;-) 73's Richard Clark, KB7QHC |
#5
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On Fri, 1 Apr 2005 06:33:17 -0800, "John Smith"
wrote: Hey, just how many of those multiple personalities do you have? But, only one sane one? Hi Brett, How many screen names do you have? Is your serial multiple personality somehow better than what you see as parallel multiple personality? What about false personality? What you perceive as a talent in yourself is projected to be the mark of a fool upon another. In this group, we observe the laws of what are called symmetry and reciprocity - two very strong, scientific principles. The responsibility of posting to a newsgroup is that only you choose what you think is important to discuss. Of your choices to go technical or metaphysical (or CB truckers), I have no control over. I have responded to your technical comments and your sidebars (as now) equally. Upon my analysis of the Top Hat on J-Pole you could have acknowledged the results, asked questions about particulars of implementation, or challenged the results to greater scrutiny - and simply ignored side topics. I observe you have not shown any interest in obtaining the model used. We share models as a commonplace expectation of peer review. Any of this would have constituted technical correspondence. Instead, the side-topics attracted your notice and you took that route instead. I welcome all correspondence, but I am not responsible for what you respond to when there are choices - especially when you can add topics as well (a privilege I exercise, you present above, and I do not object to in anyone). So, as I offered so long ago: 1. Adding a coil offers loss [demonstrated]; 2. Physical size in relation to wavelength dominates launch characteristics [demonstrated]; 3. It barely matters [less than 1dB]. The launch gain of a half wave radiator did not appear simply because a much shorter antenna is ginned up to be antiresonant [demonstrated]. This also returns me to an unanswered question (also technical): The rubber duckie antenna is certainly useful for some situations, however, it is better if it stays on the walkie-talkie and we use another design for portable or base use. Given this opprobrium, what makes its cousin for 20M more suitable? OR I am both content, and competent to discuss those movies that would have been more enjoyable than the alternative of sitting through the snooze of finding gain from a small antenna. OR I am content discussing how to obtain the most gain from a small antenna, or simply pointing you at 300 pages of results I've done years ago. 73's Richard Clark, KB7QHC |
#6
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You seem to have a problem with my name...
Would what I say have more importance to you if my name were "George Walker Bush?" How about "Princess Dianna?", "Lord Balder Wash?" How about an alcoholic PhD. down on his luck--Edward Noble, PhD., in the gutter? Is a rose not still a rose by any other name? Is logic not still the same logic no matter who speaks it? I have hoisted the pirate's flag in rebellion of fools who place importance on bloodline, circumstance of life or the self-importance of their being or--even for the sake of control alone--BUCKO! However, instead of a skull and bones, the symbol on my banner looks surprisingly like--JOHN SMITH!!! (who was that masked man anyway? (hey, that voice sounded like Tonto!)--well, maybe it looks even a bit like Alfred E. Newman! I'll tell ya what, pick a noble sounding name, the sound of which inspires shock and awe in those who fall victim to my speech--I'll change my gmail account for you....) You have already tempted me to replace my Russian made "California Kilowatt" (well, 5.5 KW--but it is hard to get true linear performance at reduced input power and drive grin) and "keenwood", with a 6X2 push pull in parallel, 1500w+ Chicken Band linear! And, that 225 amp 13.8 v power supply gets hot when I just think about a key down! (the sound of all those cooling fans are annoying, don't cha think?) Somewhere in the attic is an old Johnson 11 meter with increased output to drive the 1500!!! I can hear the "Anyone got a Radio Check", "Break channel 19", "10-4 GOOD BUDDY", "AUUDDDDIIIIIOOOOO!" and "What's up ahead southbound?" coming off the 11 meter band now!--it brings a tear to my eye I tell ya, the memories.... and the ham bashing sessions we used to engage in---felonious I tell ya! My only fear is the feds detecting me by the strange purplish glow emanating from my antenna, while I kick back and shoot skip--sipping a Corona... But then, I am NOT normal--I like to have my bit of fun...or, at least I did in the past... If your test of intellect is whether one agrees with you or not--or, whether someone plays your game of insane obfuscation--or whether one withholds his/her identity for protection from the insane (however, I did just indulge you a bit, didn't I?), or whether one "used to be"/"still is" a part-time "Chicken Bander"--I have failed, be prepared for the masses which will follow... Regards -- Hay, if'n ya'll cun't konstructivly partecipete in this har disscusion, haw aboot speel-checkin it fer me? "Richard Clark" wrote in message ... On Fri, 1 Apr 2005 06:33:17 -0800, "John Smith" wrote: Hey, just how many of those multiple personalities do you have? But, only one sane one? Hi Brett, How many screen names do you have? Is your serial multiple personality somehow better than what you see as parallel multiple personality? What about false personality? What you perceive as a talent in yourself is projected to be the mark of a fool upon another. In this group, we observe the laws of what are called symmetry and reciprocity - two very strong, scientific principles. The responsibility of posting to a newsgroup is that only you choose what you think is important to discuss. Of your choices to go technical or metaphysical (or CB truckers), I have no control over. I have responded to your technical comments and your sidebars (as now) equally. Upon my analysis of the Top Hat on J-Pole you could have acknowledged the results, asked questions about particulars of implementation, or challenged the results to greater scrutiny - and simply ignored side topics. I observe you have not shown any interest in obtaining the model used. We share models as a commonplace expectation of peer review. Any of this would have constituted technical correspondence. Instead, the side-topics attracted your notice and you took that route instead. I welcome all correspondence, but I am not responsible for what you respond to when there are choices - especially when you can add topics as well (a privilege I exercise, you present above, and I do not object to in anyone). So, as I offered so long ago: 1. Adding a coil offers loss [demonstrated]; 2. Physical size in relation to wavelength dominates launch characteristics [demonstrated]; 3. It barely matters [less than 1dB]. The launch gain of a half wave radiator did not appear simply because a much shorter antenna is ginned up to be antiresonant [demonstrated]. This also returns me to an unanswered question (also technical): The rubber duckie antenna is certainly useful for some situations, however, it is better if it stays on the walkie-talkie and we use another design for portable or base use. Given this opprobrium, what makes its cousin for 20M more suitable? OR I am both content, and competent to discuss those movies that would have been more enjoyable than the alternative of sitting through the snooze of finding gain from a small antenna. OR I am content discussing how to obtain the most gain from a small antenna, or simply pointing you at 300 pages of results I've done years ago. 73's Richard Clark, KB7QHC |
#7
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On Fri, 1 Apr 2005 14:47:31 -0800, "John Smith"
wrote: You seem to have a problem with my name... Hi Brett, one withholds his/her identity for protection You could change your name to Pollyanna with that kind of naivete. Perhaps this is your cue to another movie. "The Whole Nine Yards?" Cute, but the sequel sucked big time. be prepared for the masses which will follow... Say a few Hail Marys too. ;-) 73's Richard Clark, KB7QHC |
#8
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Richard:
(Psalms 9999:9999) You fill mine and others threads with your garbage... You are irksome like a small self-centered, temper throwing child... You name and call is on the verge of filling me with loathing... If you have any education, if your up-bringing occurred in the civilized world--it should be sufficient to just ask you to cease... But, you have convinced me that is out of the realm of possibility. However, if you won't quit for sheer decency... quit for your own benefit. As surely you must realize, the behavior you exhibit here is almost certainly NOT localized to here and others will KNOW this, do not be a fool for yourself. You give away the fact that in REAL life you have problems getting along with others; here is just a continuation of that. You lead one to believe that your neighbors hold you in contempt, that you purposely hinder and set to conflict all which you involve yourself in. I even would bet law enforcement agencies know you personally and dread your calls. You seem to take pride in appearing as a bully and expect others to enjoy your performance; only idiots and other bullies will enjoy you. You lead me to pity your fellow workers--especially if one happens to invoke your ire. I pray you have no wife... Halt your present course man! Human memory is fleeting, what shreds of dignity are left you--KEEP!!!! Regards -- Hay, if'n ya'll cun't konstructivly partecipete in this har disscusion, haw aboot speel-checkin it fer me? "Richard Clark" wrote in message ... On Fri, 1 Apr 2005 14:47:31 -0800, "John Smith" wrote: You seem to have a problem with my name... Hi Brett, one withholds his/her identity for protection You could change your name to Pollyanna with that kind of naivete. Perhaps this is your cue to another movie. "The Whole Nine Yards?" Cute, but the sequel sucked big time. be prepared for the masses which will follow... Say a few Hail Marys too. ;-) 73's Richard Clark, KB7QHC |
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