I like a guy who can get to the essence of an issue. On May 18, 2013, at 2:34 PM, "W4SK" <w...@comcast.net> wrote:
> How can ya'll worry about this when the burning issues of free hats and > discounts remain unsolved? > -W4SK > ________________________________ > John T. Gwin > jtg...@comcast.net > judgejohng...@wilsoncountytn.com > ----- Original Message ----- From: "Ron D'Eau Claire" <r...@cobi.biz> > To: <elecraft@mailman.qth.net> > Sent: Saturday, May 18, 2013 2:31 PM > Subject: Re: [Elecraft] OT: Elevated vs. Buried Radials > > >> Joe, the article I referenced clearly said to use 1/4 wavelength radials >> when they are elevated. That's agrees with everything I've read and done >> over years as well. >> >> I'll stand behind that SteppIR article as showing how to put up a vertical >> that avoids the worst pitfalls. (And it's basically a repeat of what's in >> every Antenna Handbook I've read over the years.) >> >> Can one tweak it even further? Perhaps. The articles you reference study >> some ideal situations that most Hams cannot emulate that do so, especially >> in producing a perfectly omnidirectional pattern with a minimum of 4 >> radials. And they confirm the basic rules covered in the SteppIR article. >> >> 73, Ron AC7AC >> >> >> >> -----Original Message----- >> From: elecraft-boun...@mailman.qth.net >> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe Subich, W4TV >> Sent: Saturday, May 18, 2013 11:53 AM >> To: elecraft@mailman.qth.net >> Subject: Re: [Elecraft] OT: Elevated vs. Buried Radials >> >> >> The SteppIR information is overly simplified. For the best current analysis >> of elevated vs. on ground radials see the extensive data from N6LF - >> http://www.antennasbyn6lf.com >> >> In particular, read the comments on elevated radials: >> http://www.antennasbyn6lf.com/2011/02/comments-on-elevated-radials.html >> studies on ground systems: >> <http://www.antennasbyn6lf.com/2009/12/series-of-qex-articles-on-ground-syst >> em-experiments.html> >> and studies on elevated radial systems: >> <http://www.antennasbyn6lf.com/2012/02/elevated-radial-ground-systems-some-c >> autions.html> >> >> One of the major red flags with elevated radials - they must be a major >> fraction of a wavelength (1/8 wave is a good rule of thumb) before they >> really act independently of the "dirt". Even then, nothing will reduce the >> losses in the 1 to 10 wavelength area responsible for forming the low take >> off angle lobe. >> >> 73, >> >> ... Joe, W4TV >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> >> >> ----- >> No virus found in this message. >> Checked by AVG - www.avg.com >> Version: 2013.0.2904 / Virus Database: 3162/6329 - Release Date: 05/16/13 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
