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Total 25 documents matching your query.

21. Re: [TenTec] NEC, ground, grounds, and radials. (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>; Date: Sat, 08 Jan 2011 14:13:33 -0600; What I see is that the changes in isotropic reference definition in the presence of a ground cause the program to show greater gain numbers that make the casual user conclude that there is a gain cau; /archives//html/TenTec/2011-01/msg00208.html (12,317 bytes)
22. Re: [TenTec] NEC, ground, grounds, and radials. (score: 1): Author: Steve Hunt <steve@karinya.net>; Date: Sat, 08 Jan 2011 21:14:43 +0000; Jerry, With respect, the "industry standard" Isotropic reference definition *doesn't* change in the presence of ground - it remains at a power density of Pt/(4*Pi*r^2) in all cases. It may be that le; /archives//html/TenTec/2011-01/msg00209.html (12,797 bytes)
23. Re: [TenTec] NEC, ground, grounds, and radials. (score: 1): Author: Richards <jruing@ameritech.net>; Date: Sat, 08 Jan 2011 18:41:41 -0500; Once again, Ray... timing is the essence of good comedy. ! == James -K8JHR == _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mai; /archives//html/TenTec/2011-01/msg00217.html (8,932 bytes)
24. Re: [TenTec] NEC, ground, grounds, and radials. (score: 1): Author: Dave Kelley <dkelley@bucknell.edu>; Date: Sat, 8 Jan 2011 19:14:06 -0500; Dear Steve and Jerry, I think I might not have been clear in my original post about the 3 dB gain "error" in NEC. The moment method codes like NEC, EZNEC, Mininec, and all of their variants are calcu; /archives//html/TenTec/2011-01/msg00221.html (12,638 bytes)
25. Re: [TenTec] NEC, ground, grounds, and radials. (score: 1): Author: Steve Hunt <steve@karinya.net>; Date: Sun, 09 Jan 2011 09:46:27 +0000; Dave, Thank you for the clarification, and for confirming my points: * dBi is always referenced to an isotropic radiator *in free space* * EZNEC is consistent with the industry definition and is not; /archives//html/TenTec/2011-01/msg00230.html (10,527 bytes)

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