[Boatanchors] Beam elements

[RAY FRIESS]

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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