[TowerTalk] Fw: replacement guys (was ...and C31XR)

[Mike Coogan]

You might be referring to a article written for QST, August 1993, by Lew 
Gordon, K4VX. This article is found in the ARRL publication, Yagi 
Antenna Classics. Using NEC, he models  a 109' tower carrying two large 
yagi's, one at 54' and the other at 109'. The tower is constructed with 
conductive guys.
Quoting his conclusion, "Continuous, conductive guy wires do disturb the 
patterns of antennas mounted on towers. But unless you're a purist in 
pursuit of unrealistically clean side lobes, these effects are of no 
practical importance."
In my area, we had a rash of vandalism, where a wacko got his jollies by 
igniting (burning) the coax to a number of commercial and cell towers 
including a 200' plus tower used by the Washington State police.  A 
local ham tower, AB7F also suffered the same fate. John suffered a bad 
cut while trying to extinguish the fire.
These happenings really got me wondering would I want synthetic guys 
that burn and can be easily cut!

                                    Mike Coogan  W7MGC
                                    Vancouver, Washington

----- Original Message ----- 
From: "StellarCAT" <RXDesign at ssvecnet.com>
To: "tower" <towertalk at contesting.com>
Sent: Wednesday, September 21, 2005 9:17 AM
Subject: [TowerTalk] replacement guys (was ...and C31XR)


>I see phillystrand is still being hawked as the best overall solution 
>for guying where antennas
> will be along the length of the tower... but I still prefer good old 
> fashioned steel.
>
> The reasons - much less stretch (see K7NV's very nice analysis of same 
> using both EHS and
> philly - no comparison!), no UV concerns (long term philly use is 
> still not available in great even
> numbers), cost, and overall strength.
>
> As for interaction - there is a treatise on the net by a gentlemen 
> that I have forgotten his name -
> very well done overall on tower installations... he said in essence: 
> for a dipole to add gain one
> has to CAREFULLY place another length of conducting material in the 
> plane, at the right distance,
> and have the right length to JUST have a little gain... the guy wires 
> are not in the plane in most cases,
> can be cut to be non-resonant,  and for the most part are a long 
> distance away.
>
> I will stick with steel!
>
> g.
>
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>
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>
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