Hi Bob,
I had a look at your QTH via Google Earth. Would appear that the only
support you have is your tower. And on something like a 65 x115 corner
city lot. How tall is your tower?
73, Guy K2AV
On Sat, Jan 7, 2012 at 10:08 PM, Bob K6UJ <k6uj@pacbell.net> wrote:
> 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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