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Total 23 documents matching your query.

1. [TenTec] Radials (score: 1): Author: Mike Gorniak <gorniak@ncis.com>; Date: Mon, 07 Jun 2004 21:47:58 -0500; There is no advantage to making ground radials resonant. Resonance contributes nothing to the efficiency of the system. Those that believe otherwise have not spent any time with a calibrated Field St; /archives//html/TenTec/2004-06/msg00149.html (6,995 bytes)
2. Re: [TenTec] Radials (score: 1): Author: Robert & Linda McGraw K4TAX <RMcGraw@Blomand.Net>; Date: Tue, 08 Jun 2004 16:10:48 -0500; Ground radials ........ the more the better....... to a point of economics and dimishing returns. As to the number, 60 will be better than 30 but only very little is to be gained by going to 120. As; /archives//html/TenTec/2004-06/msg00169.html (9,604 bytes)
3. Re: [TenTec] Radials (score: 1): Author: "Gary Hoffman" <garyhoffman@spacetech.com>; Date: Mon, 7 Jun 2004 23:07:39 -0400; Yes, indeed, it is most certainly a matter of perspective. Now, my perspective is this: 3 dB is Double. If I could double my signal, as inexpensively as burying 60 extra pieces of the old wire I hav; /archives//html/TenTec/2004-06/msg00181.html (7,807 bytes)
4. [TenTec] Radials (score: 1): Author: "Lee K7tjr" <k7tjr@comcast.net>; Date: Tue, 8 Jun 2004 09:35:53 -0700; I have to disagree that there is no advantage to having radials resonant or of a controlled length.. I have made extensive measurements of the surge impedance of radials ( by measuring single radials; /archives//html/TenTec/2004-06/msg00182.html (8,891 bytes)
5. Re: [TenTec] Radials (score: 1): Author: Ken Brown <ken.d.brown@verizon.net>; Date: Tue, 08 Jun 2004 19:23:49 -1000; If I could double my signal, as inexpensively as burying 60 extra pieces of the old wire I have laying around, I would most certainly do it in a heartbeat. If you've got the money and are willing to; /archives//html/TenTec/2004-06/msg00186.html (7,803 bytes)
6. Re: [TenTec] Radials (score: 1): Author: "Richard Detweiler" <rdetweil@hotmail.com>; Date: Wed, 09 Jun 2004 09:21:45 -0500; Lots of articles from near the beginning of radio on this subject. I've gotten along very well with 40 radials, 9 degrees apart. All laying at the ground level, not buried, but not raised, ( use coat; /archives//html/TenTec/2004-06/msg00192.html (10,677 bytes)
7. RE: [TenTec] Radials (score: 1): Author: "NJ0IP" <Rick@dj0ip.de>; Date: Wed, 9 Jun 2004 16:48:17 -0700; OK guys, to be honest, I believe I now understand less than I did when we started this thread! It seems we have good arguments on both sides of he story, but for most of us, going to so much trouble; /archives//html/TenTec/2004-06/msg00193.html (7,955 bytes)
8. Re: [TenTec] Radials (score: 1): Author: "Tony Martin W4FOA" <w4foa@comcast.net>; Date: Wed, 9 Jun 2004 10:56:19 -0400; http://www.ncjweb.com/k3lcmaxgainradials.pdf Thanks to Al and NCJ for making such an informative study available. 73 Tony, W4FOA the some justify that feet. at is And ________________________________; /archives//html/TenTec/2004-06/msg00194.html (11,717 bytes)
9. Re: [TenTec] Radials (score: 1): Author: "Tony Martin W4FOA" <w4foa@comcast.net>; Date: Wed, 9 Jun 2004 11:05:28 -0400; Having had considerable experience in burying radials, I would only add this one lesson I learned the hard way.... If possible, use insulated wire, as heavy as you can afford, and try to keep it "nic; /archives//html/TenTec/2004-06/msg00195.html (10,023 bytes)
10. RE: [TenTec] Radials (score: 1): Author: "Jim Brown" <jim@audiosystemsgroup.com>; Date: Wed, 09 Jun 2004 10:03:19 -0500; Did you study any of the many excellent technical articles published by ARRL on this topic? Or did you simply wait for others to agree on a simple answer? Understanding is achieved by serious study.; /archives//html/TenTec/2004-06/msg00196.html (8,593 bytes)
11. RE: [TenTec] Radials (score: 1): Author: "NJ0IP" <Rick@dj0ip.de>; Date: Wed, 9 Jun 2004 17:27:42 -0700; Thanks Jim I only run vertical dipoles fed with openwire and don't need any radials. What I was trying to point out is that someone trying to learn from this thread has been fed stories which are all; /archives//html/TenTec/2004-06/msg00199.html (9,607 bytes)
12. [TenTec] Radials (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Wed, 09 Jun 2004 12:30:37 -0400; remains unanswered. (for 160 meters I believe...de W4ZV) And the answer is: 30 * 0.25 * 538' = ~4000' of wire Looking at Figure 3 on page 3 here: http://www.ncjweb.com/k3lcmaxgainradials.pdf the opti; /archives//html/TenTec/2004-06/msg00201.html (8,883 bytes)
13. Re: [TenTec] Radials (score: 1): Author: "JAMES HANLON" <knjhanlon@msn.com>; Date: Wed, 9 Jun 2004 10:40:56 -0600; A good reference on the subject of Vertical Antennas is the following paper-back book: The Amateur Radio Vertical Antenna Handbook by Capt. Paul H Lee, USN(Ret), N6PL. It is part of the CQ magazine t; /archives//html/TenTec/2004-06/msg00203.html (8,874 bytes)
14. Re: [TenTec] Radials (score: 1): Author: David Kelley <dkelley@bucknell.edu>; Date: Wed, 09 Jun 2004 14:01:20 -0400; And once again, the question of 30x 1/4 vs 60x 1/8 wavelength radials remains unanswered. I find that to be a very interesting and practical question. In all of my reading in the past, including W6SA; /archives//html/TenTec/2004-06/msg00207.html (10,915 bytes)
15. Re: [TenTec] Radials (score: 1): Author: Mike Gorniak <gorniak@ncis.com>; Date: Wed, 09 Jun 2004 19:30:04 -0500; Gary, To clarify, I was referring to Field Strength, measured in Millivolts per Meter, which is the standard expression. It takes 6 db to double the measured signal strength, which is equivalent to o; /archives//html/TenTec/2004-06/msg00232.html (10,019 bytes)
16. Re: [TenTec] Radials (score: 1): Author: "Stuart Rohre" <rohre@arlut.utexas.edu>; Date: Wed, 9 Jun 2004 20:48:23 -0500; Tony, Thanks for a great idea on a radial burial tool! I had never thought of this! will be trying this out on an NVIS reflector set I am burying soon. 73, Stuart K5KVH ______________________________; /archives//html/TenTec/2004-06/msg00233.html (8,557 bytes)
17. Re: [TenTec] Radials (score: 1): Author: "Jim Brown" <jim@audiosystemsgroup.com>; Date: Wed, 09 Jun 2004 21:08:38 -0500; Hey guys -- notice what real engineering entails. This is the right way to do things, it's a LOT work, but it means something when you're done! Many thanks for sharing this, Mike. This must have take; /archives//html/TenTec/2004-06/msg00234.html (8,988 bytes)
18. Re: [TenTec] Radials (score: 1): Author: "Steve N4LQ" <n4lq@iglou.com>; Date: Wed, 9 Jun 2004 22:14:36 -0400; An excellent enhancement to any radial system is to simply plant spinach around the antenna. It is high in iron and greatly improves ground conductivity. n4lq -- Original Message -- From: "Jim Brown"; /archives//html/TenTec/2004-06/msg00235.html (9,470 bytes)
19. Re: [TenTec] Radials (score: 1): Author: "Stuart Rohre" <rohre@arlut.utexas.edu>; Date: Wed, 9 Jun 2004 21:25:20 -0500; Let me restate some basics another way. Hopefully, this can help those seeking grounds about (vertical) grounds. The ideal ground screen under a short or quarter wave vertical is made up of conductor; /archives//html/TenTec/2004-06/msg00237.html (11,961 bytes)
20. Re: [TenTec] Radials (score: 1): Author: "Gary Hoffman" <garyhoffman@spacetech.com>; Date: Wed, 9 Jun 2004 10:54:36 -0400; But my point is that this doesn't cost any money...because, as I said in my post, I have the wire. And there is no laborer, nor power tools, and very little sweat, because, as others have commented i; /archives//html/TenTec/2004-06/msg00238.html (10,610 bytes)

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