[TowerTalk] 160/80m Inverted L dualband design
ab2e at hotmail.com
Wed Jul 2 13:43:02 EDT 2008
Check out OK1RR's excellent site, http://ok1rr.com/e107_plugins/content/content.php?content.38
specifically for an antenna called the Battle Creedk Special. It is a well-known antenna used by many dxpeditions, made for 40-80-160, using traps. The link above is for the wire version.
73 Darrell AB2E> Date: Wed, 2 Jul 2008 12:11:26 -0500> From: schiers at netins.net> To: pat at n0hr.com> CC: towertalk at contesting.com> Subject: Re: [TowerTalk] 160/80m Inverted L dualband design> > Pat, what are the details of your trap? I'm using an inverted L for 80m, > about 5' away from my tower and have been VERY happy with its > performance. I've often thought of putting a trap in it and extending > the sloping section to get 160 m on it, but have not seen either a > commercial trap or design for a trap that I was happy with. What > resonant freq did you choose for the trap, and how is it constructed? > Thanks, 73> > ...hasan, N0AN> > Pat Rundall wrote:> > I am contemplating the construction of a dual band inverted L for 160 and 80> > meters. It would be a quarter wave design with a sloping top and mounted off> > of the side of my self supporting tower.> >> > I have modeled it in MMANA and am looking for advice on the design,> > improvements, matching unit/trap ideas, alternatives, etc.> >> > You can see what the design looks like, SWR/gain plots, design> > considerations, etc. here:> > http://www.n0hr.com/Dual_band_Inv_L.htm> >> > If you have input, I would certainly love to hear it.> >> > 73> > Pat N0HR> > _______________________________________________> >> >> >> > _______________________________________________> > TowerTalk mailing list> > TowerTalk at contesting.com> > http://lists.contesting.com/mailman/listinfo/towertalk> > ------------------------------------------------------------------------> >> >> > No virus found in this incoming message.> > Checked by AVG. > > Version: 8.0.134 / Virus Database: 270.4.3/1529 - Release Date: 7/1/2008 7:23 PM> >
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