thanks guys,
I will experiment with the top loading and also pulling the bottom away to a
wider angle
and see how it goes.
73,
Bob
K6UJ
On Jan 7, 2012, at 8:17 PM, k8gg@voyager.net wrote:
> Bob:
>
> The simple answer is Yes.
>
> I remember the article on the loaded delta loop but have never modelled it.
> I assume that the single wire top loading will also lower the feedpoint
> impedance.
>
> GL & 73 George K8GG
>
>
>
> > The reason I am trying a horizontally polarized delta loop is because I
> > had a vertically polarized delta
> > strung from the tower and it was too noisy. The tower was reradiating
> > noise to the delta. I am using a wood pole extended out 4 feet from the
> > tower
> > for the apex support and the lower section slopes away form the tower
> > about 30 degrees. I did a temporary lash up with feed at the bottom for
> > horizontal
> > polarization and 2 to 3 units quieter on the noise. Now I want to try
> > linear loading to reduce the size a little too. I would rather have the
> > vertical
> > polarization for DX but don't like the higher noise level. So its all
> > about the noise.
> >
> > Bob
> > K6UJ
> >
> >
> >
> >
> > On Jan 7, 2012, at 5:02 PM, Herb Schoenbohm wrote:
> >
> >> Bob,
> >>
> >> IMHO what you described would be a linear loaded loop and the folded
> >> down wires should be at the top and the feed where you described. This
> >> avoids some feedline interaction. But remember such an antenna
> >> depending on spacing from the tower will couple significant energy to
> >> the tower itself. So all bets are off on getting mostly horizontal
> >> polarization. The loop itself, even feed at the bottom center will
> >> still have some of that. My suggestion, but you should model it first,
> >> is to pull the bottom section away at a 45 degree angle from the tower
> >> so you have a sloping Delta Loop. This would probably help reduce tower
> >> interaction a bit. But the most ardent supporters of Delta loops
> >> recommend wooden support poles and corner feeding for best DX work since
> >> the vertical component is what really helps you on the low bands.
> >>
> >>
> >> 73
> >>
> >> Herb KV4FZ
> >>
> >>
> >>
> >>
> >>
> >> On 1/7/2012 8:29 PM, Bob K6UJ wrote:
> >>> I am panning to try out a top loaded delta loop for 80 meters strung
> >>> off the side of my tower.
> >>> I want to have a horizontally polarized loop. I will feed at the
> >>> middle of the bottom horizontal leg.
> >>> Does the loading wire attach to the apex at the top on this loop ?
> >>>
> >>> thanks,
> >>> Bob
> >>> K6UJ
> >>>
> >>>
> >>> _______________________________________________
> >>>
> >>
> >> _______________________________________________
> >> UR RST IS ... ... ..9 QSB QSB - hw? BK
> >
> > _______________________________________________
> > UR RST IS ... ... ..9 QSB QSB - hw? BK
> >
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
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