Topband: horiz TLDL for 80m

[Herb Schoenbohm]

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
>
>
> _______________________________________________
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