[TowerTalk] guying distance

[terry burge]

Ah, 'well, yes that goes without saying' to quote Dr. Franken-stein. But of course anytime you put beams up the side of a tower and rotate them you have to take into account the guy wires hitting the boom or elements. Of course, if it's a stand alone tower this does not come into play. Just something you have to deal with. But I still want do it and I've even though of using a 2 element quad on my particular setup. I like quads and know I can build another one. Tuning can be a chore. But I don't know why there aren't more of them. They work. 

But yes, make sure whatever antenna you put up doesn't contact the guys...

Terry
KI7M

> On December 5, 2018 at 8:54 AM "Bob Shohet, KQ2M" <kq2m at kq2m.com> wrote:
> 
> 
> For various terrain and property line related reasons I have had to go shorter than and significantly longer than the 80% with specific legs of my two towers, as short as 65% and as long as 130%.  This also has an effect on the tensioning of the guy wires – and which needs to be taken into account.
> 
> What is often not realized until after the fact is that if your intention is to stack multiple antennas and rotate them separately, either on sidemounts or ring rotors, using less than ~ 80% may compromise or eliminate your ability to stack and rotate the “in-between” antennas because they will likely get caught in the guy wires.  And, if there is not enough extra clearance, even if you can safely rotate under the guy wires on a calm day, on a day when it is windy or icy or both, you might not clear those same guy wires!  It is quite remarkable to see just how much those guy wires can move and bounce around in violent T-storm or worse!
> 
> Depending on the band, length of the boom and elements, proposed height of the antenna, heights of the guy wire attachment points and proximity to the antenna, radius of antenna (mounted on the rotator) from the tower legs (especially if side-mounted) and other factors, 80% may not be enough either; but it will at least get you “in the ballpark” and give you some viable options.
> 
> 73
> 
> Bob KQ2M
> 
> 
> From: Grant Saviers 
> Sent: Wednesday, December 05, 2018 11:17 AM
> To: cqtestk4xs at aol.com ; towertalk at contesting.com 
> Subject: Re: [TowerTalk] guying distance
> 
> Except that a PE can change this with the proper analysis.  Also, a post 
> plus deadman end is a way to geometrically shorten the 80%.  Look at 
> commercial guyed towers and they often have a shorter guy anchor to base 
> perecent (ie steeper guy angles).
> 
> Grant KZ1W
> 
> On 12/5/2018 7:42 AM, Bill via TowerTalk wrote:
> > Rohn specifies 80% of the height for their towers..25, 45, 55, 65 all the same.
> > Bill K4XS/KH7XS
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