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121. Re: Topband: Ground Radials and an inv-L antenna (score: 131): Author: DAVID CUTHBERT <telegrapher9@gmail.com>; Date: Fri, 2 Oct 2009 09:05:17 -0600; Dennis, it appears that the near field losses are equivalent to 25 ohms at the antenna base. Since adding more radials does not improve this I suspect the nearby trees are the source of the loss. Dav; /archives//html/Topband/2009-10/msg00032.html (10,479 bytes)
122. Topband: Elevated resonating radials question - A35MT (score: 131): Author: "Tomas Magyla" <tomas.magyla@gmail.com>; Date: Fri, 4 Jan 2008 13:37:40 +1100; Season's Greetings to everyone! Many thanks for QSOs with A35MT on the Top Band before and during the CQ WW CW 2007 Contest. I had some pretty sad experience with elevated radials, below is the quest; /archives//html/Topband/2008-01/msg00037.html (9,437 bytes)
123. Re: Topband: Tuning elevated radials (score: 131): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Fri, 16 Sep 2005 17:02:09 -0400; imbalance in much less reduction in bandwidth. Hi Phil, We have to read papers very carefully. Without an actual FS test or verification, postulations prove nothing. If it is desirable to shorten th; /archives//html/Topband/2005-09/msg00045.html (10,601 bytes)
124. Topband: Re: Number of Radials/Elevated vs Grounded (score: 131): Author: dxer10@hotmail.com (Duncan Cameron); Date: Fri, 15 Mar 2002 14:43:24; HelloI am very interested in this topic. I have a "third wavelength" inverted 'L',(total length of 175 feet with 65 feet in the vertical section) whose feedpoint is 7 feet above ground with 4 symetri; /archives//html/Topband/2002-03/msg00146.html (7,816 bytes)
125. Topband: Going from 48 to 60 radials- Meas. Results (score: 131): Author: n4uk@mindspring.com (n4uk@mindspring.com); Date: Thu, 20 Dec 2001 19:07:44 -0500; Hello to all, I finally found the time to add the final set of radials to the 1/4wl tower vertical(122ft). I recorded the SWR changes after adding radials in groups of four. Here is what I was seeing; /archives//html/Topband/2001-12/msg00082.html (8,968 bytes)
126. Topband: Elevating radials (score: 131): Author: Billg@warwick.net (Bill Gerhold); Date: Wed, 10 Oct 2001 20:09:45 -0400; I used elevated radials on an elevated (3 foot off the ground) 80 meter vertical. I ran the radials at a 45 degree angle from the base of the vertical up to a 10 foot height and then horizontal from; /archives//html/Topband/2001-10/msg00080.html (8,480 bytes)
127. Topband: Radials experiment results. (score: 131): Author: KRAMIREZ@tritonpcs.com (Kenneth Ramirez); Date: Mon, 14 Feb 2000 12:26:48 -0500; I have completed my experimentation with the radial system of my 160m shunt fed tower. Originally I had 24 insulated 1/4wl radials laying on the ground. When I added each set of radials I was not see; /archives//html/Topband/2000-02/msg00113.html (8,891 bytes)
128. Topband: Elevated Radials (score: 131): Author: W8JI@contesting.com (Tom Rauch); Date: Mon, 2 Aug 1999 07:37:43 -0400; Hi Federeco, Most people lost sight of the fact this was just an article that assumed equal current in radials somehow cancels the field below the radials and reduces losses. That theory is not good; /archives//html/Topband/1999-08/msg00003.html (7,745 bytes)
129. TopBand: Elevated Radials (score: 131): Author: jreisert@jlc.net (Joe Reisert); Date: Wed, 18 Mar 1998 10:16:57 -0500 (EST); Hi Earl, Elevated radials with a base fed tower (albiet insulated base) at ground level was described by Al Christman in March 1993 QST on page 72. He shows the 45 degree angle etc. and gives other i; /archives//html/Topband/1998-03/msg00271.html (10,580 bytes)
130. Re: Topband: Radials on ground v FCP (score: 128): Author: CUTTER DAVID via Topband <topband@contesting.com>; Date: Sun, 9 Jan 2022 12:51:28 +0000 (GMT); Hi Rob I see copper prices have doubled in the last year. https://k2av.com/Olinger_NCJ_article_on_FCP.pdf he says "The reason for the FCP is twofold: minimal space and a low-loss alternative to radia; /archives//html/Topband/2022-01/msg00061.html (12,317 bytes)
131. Re: Topband: Inverted L with elevated radials for topband (score: 128): Author: Grant Saviers <grants2@pacbell.net>; Date: Thu, 5 Mar 2020 15:43:06 -0800; comments in line As noted by others, N6LF has a wealth of modeled and measured data on elevated radials. antennasbyn6lf.com The antenna would be supported by a 16 m (52.5 ft) high fiberglass pole pla; /archives//html/Topband/2020-03/msg00067.html (11,400 bytes)
132. Re: Topband: elevated radials (score: 128): Author: Grant Saviers <grants2@pacbell.net>; Date: Mon, 22 Oct 2018 08:37:32 -0700; I have a 160m T with 8 elevated 125' radials and the currents are worst case 3:1 unequal for various reasons (nearby steel building & towers). I've modeled this with EZNEC Pro4 by placing the actual; /archives//html/Topband/2018-10/msg00181.html (11,146 bytes)
133. Re: Topband: Radials question (score: 128): Author: k8gg@voyager.net; Date: Tue, 13 Jun 2017 08:33:08 -0400 (EDT); Hi Mike, et al, Here are my thoughts interlaced. **Using a wire - say 12 gauge - Will probably give you a 100 kHz 2:1 SWR bandwidth. Using a vertical say 2" O.D. at the bottom and 1.25" O.D. at the t; /archives//html/Topband/2017-06/msg00033.html (9,314 bytes)
134. Re: Topband: Deployable radials for 80/160M (score: 128): Author: "Carl" <km1h@jeremy.mv.com>; Date: Tue, 24 Jun 2014 20:00:21 -0400; As the number of radials increases from the basic 4 the wire gauge can be reduced. With 16+ radials #18 is fine for RF current splitting and longevity; I dont use bare wire for any radials which are; /archives//html/Topband/2014-06/msg00196.html (12,564 bytes)
135. Re: Topband: Question - optimum number of radials (score: 128): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Thu, 13 Feb 2014 22:39:11 -0500; Jerry Sevick, W2FMI, has an interesting comment about the "120" number in his book, "The Short Vertical Antenna and Ground Radial." At the end of the first chapter he notes: "...it should be mentione; /archives//html/Topband/2014-02/msg00206.html (11,215 bytes)
136. Re: Topband: elevated radials (score: 128): Author: Mike Waters <mikewate@gmail.com>; Date: Fri, 20 Sep 2013 10:42:16 -0500; Hello Jim, Thank you for this. I don't doubt for a second that my elevated 1/4 wave radial currents may be unequal. I should throw together an RF current meter and check them sometime, and add more r; /archives//html/Topband/2013-09/msg00284.html (8,549 bytes)
137. Re: Topband: trimming elevated radials (score: 128): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Sun, 31 Mar 2013 20:45:17 -0400; What is the preferred method of tuning elevated radials for uniformity? Jeff and all, It takes two halves of a system to make a whole system. This means the vertical affects the radial resonant lengt; /archives//html/Topband/2013-04/msg00000.html (8,902 bytes)
138. Re: Topband: raised radials (score: 128): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Sat, 15 Dec 2012 08:45:34 -0500; Hi, Tom Well, I also used a 40m GP with 4 elevated resonant radials about 6' above ground and I worked an awful lot of really good DX with it!! I found it to be about equal to my half-wave vertical d; /archives//html/Topband/2012-12/msg00402.html (9,425 bytes)
139. Re: Topband: Radials over a stone wall (score: 128): Author: "Clive GM3POI" <gm3poi2@btinternet.com>; Date: Fri, 10 Aug 2012 13:34:36 -0800; Tony the walls of my house are Stone and about the thickness of your wall. When I came to installing a good ground system I drilled through the stone wall fairly easily and ran copper tubing through; /archives//html/Topband/2012-08/msg00162.html (12,070 bytes)
140. Re: Topband: Radials over a stone wall (score: 128): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Fri, 10 Aug 2012 15:32:47 -0400; Tony, no need to fret about drilling. I would say than going under is better than going over. The crews who do direct burial for cable TV and fiber have special directional drill attachments that you; /archives//html/Topband/2012-08/msg00160.html (12,609 bytes)

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