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In article ,
Billy Burpelson wrote: In article , Billy Burpelson wrote: RHF wrote: FWIW - Burying the Coax Cable is simply one of the many Synergistic Elements that goes into making a Low Noise Shortwave Radio Listening (SWL) Antenna -a-la- John Doty Three Rec.Radio.Shortwave Messages to Read -by- John Doty http://groups.google.com/group/rec.r...bc6a2bf8acc12d Well, "John Doty" in the reference above says: Any *unshielded* [my emphasis added] conductor in your antenna/ground system is capable of picking up noise: the antenna, the "lead-in" wire... First of all, isn't the "lead-in wire" (coaxial cable in this discussion) -shielded- ? So according to his -own- statement, coax shouldn't have to be buried, at least from a noise mitigation viewpoint. Doty continues: You can keep noise currents away from the antenna by giving them a path to ground near the house, giving antenna currents a path to ground away from the house, and burying the the coaxial cable from the house to the antenna. In the 1930s, Bell Laboratories, while investigating power line influence on telephone cables, proved that burial had NO effect on noise being induced into the telephone cables; i.e., 20 feet of aerial separation, from a noise standpoint, was exactly the same as 18 feet of aerial separation plus being buried 2 feet deep. Hmmm...should I believe "John Doty" or Bell Labs? You're a smart guy -- I'll let you figure that one out for yourself. :-) Telamon wrote: Without agreeing or disagreeing with your arguments above don't you think you should be able to come up with your own explanations and understandings on the subject? Let's examine what you just said above. You want me to re-invent the wheel, re-plow the same ground and duplicate the work already done by the PhDs at Bell Labs? To put it another way, you imply it's OK for RHF to quote "John Doty" but that it's not OK for me to quote Bell Labs. This is one of your more brilliant comments, Sparky. No, just put it in your own words. See by putting theory, concepts, and ideas in your own words maybe you could impart greater understanding for people reading your posts. And no I don't think it's OK for RHF or anyone else to do this. Why should we read you posts... Nobody is forcing you, Sparky. Who said I was forced? ...when we can just go read the person you reference? If you -don't- read my post, how would you know what person I am referencing? Again, positively brilliant of you, Sparky. Oh clueless one. There was nothing in your own words just the references. Again your posts are not worth reading. You add no information, you did not use the referenced information in the context of the thread, you did not explain how the referenced information is relevant to the questions raised in the thread. In any event, the Bell System Practices (BSPs) addressing this issue, still in use to this very day, are proprietary. However, I imagine you could reference the public 'Bell System Technical Journal' issues of the era. And, yes, please DO read the "person" I reference (although the Bell Labs are not "a person"). You will then find that what I say is true. You think you somehow improve the information? Please point out where I ever said or implied anything about "improving" the information. I simply quoted the applicable work done by Bell Labs. Period. There's just no end to your brilliance, Sparky. You don't understand the concept of putting ideas into your own words? All you can do is regurgitate? I guess that means you don't understand the material you post about. I think reading your posts are a waste of time. So why did you read it, hmmmm? A sign of mental illness is repeating the same mistake. I'm an optimist. It was my thought you would get a clue. I guess not. -- Telamon Ventura, California |
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