Topband: horiz TLDL for 80m

[Bob K6UJ]

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 at 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 
> >