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Total 12 documents matching your query.

1. Topband: Grounding the ends of radials (score: 1): Author: "Bob Eldridge" <eldridge@direct.ca>; Date: Sat, 25 Jan 2014 12:45:47 -0800; I posted this on TowerTalk and I got a couple of responses as to why the ends of ground radials should not be grounded. Isn't it dependent on whether you want the radials resonant or not? And if you; /archives//html/Topband/2014-01/msg00249.html (9,677 bytes)
2. Re: Topband: Grounding the ends of radials (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Sat, 25 Jan 2014 15:58:20 -0500; I generally agree with you, Bob - especially with regard to not grounding the far ends of 1/4 wave radials!! After all what we are trying to establish is a low-impedance "image plane" for the vertica; /archives//html/Topband/2014-01/msg00250.html (10,860 bytes)
3. Re: Topband: Grounding the ends of radials (score: 1): Author: Bill Wichers <billw@waveform.net>; Date: Sat, 25 Jan 2014 21:26:34 +0000; It seems to me that whether or not one grounded the far end of a radial would make no difference. I don't see why one would want to ground the end of their radial, but if it was done with a ground ro; /archives//html/Topband/2014-01/msg00251.html (11,758 bytes)
4. Re: Topband: Grounding the ends of radials (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Sat, 25 Jan 2014 17:23:04 -0500; True, I expect, Carl. Just don't ground it! If you think about it, a more-or-less ideal "image - plane" for the vertical would be a circular metallic sheet a 1/2 wave in diameter ( although "infinite; /archives//html/Topband/2014-01/msg00252.html (13,088 bytes)
5. Re: Topband: Grounding the ends of radials (score: 1): Author: "Doug Renwick" <ve5ra@sasktel.net>; Date: Sat, 25 Jan 2014 16:32:02 -0600; If I lay my 1/4 wavelength bare radials several inches below ground; is that not the same as if the radials were grounded along their length? Doug --Original Message-- True, I expect, Carl. Just don'; /archives//html/Topband/2014-01/msg00253.html (10,508 bytes)
6. Re: Topband: Grounding the ends of radials (score: 1): Author: Guy Olinger K2AV <olinger@bellsouth.net>; Date: Sat, 25 Jan 2014 17:34:06 -0500; I am guessing that Bob is talking about insulated wire on the ground. But some specifics from him would be useful. Frequently mentioned specific radial implementations, in no specific order: 1) Raise; /archives//html/Topband/2014-01/msg00254.html (11,032 bytes)
7. Re: Topband: Grounding the ends of radials (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Sat, 25 Jan 2014 17:42:37 -0500; Yes. And the operative words there are "along its length" - very different from grounding at its end! The nastiest, and most difficult case to model and analyze is the case of "radials" laid on the g; /archives//html/Topband/2014-01/msg00255.html (11,406 bytes)
8. Topband: grounding the ends of radials (score: 1): Author: "Bob Eldridge" <eldridge@direct.ca>; Date: Sat, 25 Jan 2014 15:53:15 -0800; but if it was done with a ground rod that's not really much of a "ground" for rf. It isn't there to "provide a ground". It is there to intercept "return" rf, which "flows" not far below the surface.; /archives//html/Topband/2014-01/msg00256.html (7,940 bytes)
9. Re: Topband: grounding the ends of radials (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Sat, 25 Jan 2014 19:15:55 -0500; But why "ground" the end of a bare buried radial that's already buried in the ground?? Probably be more effective to just soak the area with Calcium Chloride or something! A radial network of elevate; /archives//html/Topband/2014-01/msg00257.html (9,061 bytes)
10. Re: Topband: Grounding the ends of radials (score: 1): Author: "Richard Fry" <rfry@adams.net>; Date: Sat, 25 Jan 2014 19:34:03 -0600; Elevated radial wires perform much differently than buried radial wires. Elevated, horizontal radial wires having self-resonant 1/4 wavelength used as all, or part of an elevated counterpoise for a m; /archives//html/Topband/2014-01/msg00259.html (9,339 bytes)
11. Re: Topband: Grounding the ends of radials (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Sat, 25 Jan 2014 20:46:43 -0500; I generally agree with you, Bob - especially with regard to not grounding the far ends of 1/4 wave radials!! After all what we are trying to establish is a low-impedance "image plane" for the vertica; /archives//html/Topband/2014-01/msg00260.html (11,449 bytes)
12. Re: Topband: Grounding the ends of radials (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Sat, 25 Jan 2014 21:05:09 -0500; All true, of course. Aside from the rocky condition of my lot, one of the main reasons that I rely on elevated radials is that I can model those antennas handily and I get good measurable results tha; /archives//html/Topband/2014-01/msg00261.html (12,157 bytes)

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