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1. TopBand: Radiation Resistance (score: 1): Author: Henry Knoll <Henry.Knoll-1@tc.umn.edu> (Henry Knoll); Date: Sat, 2 Nov 1996 21:40:13; 11/02/96 In reading some of the threads which mention radiation resistance of an antenna, I gather the following: Radiation resistance is not the same as feed point resistance. Average Joe Ham has no; /archives//html/Topband/1996-11/msg00034.html (7,338 bytes)
2. TopBand: Radiation Resistance (score: 1): Author: W8JITom@aol.com (W8JITom@aol.com); Date: Sun, 3 Nov 1996 12:55:31 -0500; Hi Henry, Radiation resistance is the TOTAL power radiated as an electromagnetic radiation divided bt the square of the current at some defined point in the system. It is never the feedpoint resistan; /archives//html/Topband/1996-11/msg00042.html (8,825 bytes)
3. TopBand: Radiation Resistance (score: 1): Author: n7cl@mmsi.com (Eric Gustafson); Date: Sun, 3 Nov 1996 14:09:35 -0700; To: <topband@contesting.com> True. Feedpoint resistance includes loss resistance plus radiation resistance. Essentially (not sure about the size limitation). You probably can't. But you really don't; /archives//html/Topband/1996-11/msg00043.html (8,462 bytes)
4. TopBand: Radiation Resistance (score: 1): Author: n7cl@mmsi.com (Eric Gustafson); Date: Sun, 3 Nov 1996 14:25:06 -0700; To: <topband@contesting.com> To: <topband@contesting.com> snip... I relaized after looking at Tom's post that I was thinking in terms of a simple resonant dipole fed at current maximum. Even the TH7; /archives//html/Topband/1996-11/msg00044.html (8,416 bytes)
5. Topband: Radiation Resistance (score: 1): Author: "Chortek, Robert L." <Robert.Chortek@berliner.com>; Date: Sat, 7 Mar 2020 18:58:50 +0000; Good Day! Does anyone know the radiation resistance of a 55 foot vertical #12 wire, top loaded with 2 41 foot #14 wires sloping at 45°, with their ends at 35 feet? Im curious about the efficiency. Th; /archives//html/Topband/2020-03/msg00078.html (7,305 bytes)
6. Re: Topband: Radiation Resistance (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Sat, 7 Mar 2020 11:22:02 -0800; There's a graph in one of the ARRL antenna publications, either the Antenna Book or the ON4UN book, of radiation resistance vs vertical height. I reproduced it in http://k9yc.com/160MPacificon.pdf If; /archives//html/Topband/2020-03/msg00079.html (8,228 bytes)
7. Re: Topband: Radiation Resistance (score: 1): Author: Dave Cuthbert <telegrapher9@gmail.com>; Date: Sat, 7 Mar 2020 09:39:36 -1000; Robert, some questions: Does the 55 ft vertical begin 10' above earth for a total radiator length of 45 ft? What frequency? The 45 deg angle doesn't work with the length and radial end height. At 1.8; /archives//html/Topband/2020-03/msg00080.html (8,607 bytes)
8. Re: Topband: Radiation Resistance (score: 1): Author: "Chortek, Robert L." <Robert.Chortek@berliner.com>; Date: Sat, 7 Mar 2020 19:52:54 +0000; Hi Dave, Thanks for the reply. The antenna is fed at 3 off the ground. The radials slope up at about 45 degrees to the roof (at about 10). Its resonant at about 1.9 MHZ so I use about 2 turns of a 5.; /archives//html/Topband/2020-03/msg00081.html (8,826 bytes)

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