[Boatanchors] Beam elements

Tue May 12 22:06:23 EDT 2009

I know they will only work with the Explorer if I want to make the tribander work on 20.

BUT, if the driven element is resonant on 20 meters and adding the coils to that resonant 20 meter driven element makes the

driven element resonant on 40 meters, then why wouldnt the traps make any other 20 meter resonant dipole resonate on 40 meters?

A 20 meter resonant antenna of any type is still a resonant antenna on 20, whether it is the triband driven element or a wire antenna or a 20 meter antenna made of tubing.

So, if the traps resonate on 40 meters the 20 meter driven element of the tribander, why would it see anything different in another type of 20 meter antenna ... electrically resonant on 20 is electrically resonant, no matter what type of antenna it is.

Ray

From: k2gkk at hotmail.com
To: rayfrijr at msn.com; boatanchors at mailman.qth.net
Subject: RE: [Boatanchors] Beam elements
Date: Tue, 12 May 2009 20:52:18 -0500

Your 40M add-on kit will ONLY work with
your Explorer beam.  It needs the 10, 15,
and 20 meter traps to make it complete.

Mac

________________________________
> From: rayfrijr at msn.com
> To: k2gkk at hotmail.com; boatanchors at mailman.qth.net; flboatanchors at yahoogroups.com; glowbugs at piobaire.mines.uidaho.edu
> Subject: RE: [Boatanchors] Beam elements
> Date: Tue, 12 May 2009 19:37:45 -0600
>
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> The traps I have are from the old Hygain Explorer 14 tribander.
>
> The tribander itself is fantastic. I have a 1.5 to 1 SWR across all three bands.
>
> I bought it from a guy near me who let it go for 40 dollars..
>
>
>
> I have it up in the air about 30 feet and it has worked great for quite a few years now ...
>
>
>
> Ray
>
>
>
> > From: k2gkk at hotmail.com
> > To: rayfrijr at msn.com; boatanchors at mailman.qth.net; flboatanchors at yahoogroups.com; glowbugs at piobaire.mines.uidaho.edu
> > Subject: RE: [Boatanchors] Beam elements
> > Date: Tue, 12 May 2009 20:33:55 -0500
> >
> >
> > Hy-Gain used to market a rotatable dipole for
> > 40/30 meters. It was basically full half
> > wave for 30 meters and used linear loading
> > to "lengthen" it for 40 meters. I had one
> > of these set on 30 meters 10 feet above my
> > Mosley PRO-67 beam. It worked fine, but the
> > whole deal, tower and all, went away along
> > with the house when Mister Twister came
> > calling on 3 May 99!
> >
> > 73 - Mac, K2GKK/5
> > Oklahoma City, OK
> >
> >
> >
> >
> >
> > * In my many years, I have come to the conclusion that one useless *
> > * man is a shame, two is a law firm and three or more is Congress. *
> >
> > * -- John Adams (1735- 1826) *
> >
> >
> >
> >
> > ________________________________
> > > From: rayfrijr at msn.com
> > > To: k2gkk at hotmail.com; boatanchors at mailman.qth.net; flboatanchors at yahoogroups.com; glowbugs at piobaire.mines.uidaho.edu
> > > Subject: RE: [Boatanchors] Beam elements
> > > Date: Tue, 12 May 2009 19:06:33 -0600
> > >
> > > Thanks.
> > >
> > > I am toying with a idea. I have the traps that were made to add 40 meters to the driven element of my triband beam.
> > >
> > > I never put the on because I thought it would be too unwieldly for my location, and I didnt want to add the extra guying that is usually added to the driven element.
> > >
> > > I was looking at them the other day and thought using them to construct a rotatable dipole for 40 meters might be worth experimenting with. That's why I wondered what the electrical wavelength of a triband beam element usually is.
> > >
> > > I was thinking that since the next band down from 20 meters, as far as the driven element of a tribander is concerned, is 15 meters, that if I made a 20 meter half wave antenna out of tubing or wire, and used these traps that maybe I could get the homebrew antenna to resonate on 40 meters, as it would do if I put them on the driven element of the tribander like they would do if I added them to the beam.
> > >
> > > If so, I could manage such a rotatable dipole, where it would be too unwieldly to add them to my tribander.
> > >
> > > What do you antenna experts here think?
> > >
> > > Ray WA7ITZ
> > >
> > >
> > >
> > >> From: k2gkk at hotmail.com
> > >> To: rayfrijr at msn.com; boatanchors at mailman.qth.net; flboatanchors at yahoogroups.com; glowbugs at piobaire.mines.uidaho.edu
> > >> Date: Tue, 12 May 2009 19:50:11 -0500
> > >> Subject: Re: [Boatanchors] Beam elements
> > >>
> > >>
> > >> Half wave, but shortened a bit by the coils in the traps.
> > >>
> > >>
> > >>
> > >> 73 - Mac, K2GKK/5
> > >>
> > >>
> > >>
> > >>
> > >>
> > >>> From: rayfrijr at msn.com
> > >>> To: boatanchors at mailman.qth.net; flboatanchors at yahoogroups.com; glowbugs at piobaire.mines.uidaho.edu
> > >>> Date: Tue, 12 May 2009 18:48:43 -0600
> > >>> Subject: [Boatanchors] Beam elements
> > >>>
> > >>>
> > >>>
> > >>>
> > >>> I'm wondering if someone here can answer a question for me?
> > >>>
> > >>>
> > >>>
> > >>> Tri-band beams ... are the elements usually electrically a quarter wave, half wave, or full wavelengths with the coils?
> > >>>
> > >>>
> > >>>
> > >>> Ray WA7ITZ
> > >>> ______________________________________________________________
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> > >>>
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