[TowerTalk] Guy lengths and spacing between guys
Robert L. Shohet
Mon, 20 Jul 1998 17:32:30 -0700
I'm in the process (finally) of staking out spots for two towers.
The base of tower 1 (90' of Rohn 25) is on ledge and is let's say at 0'.
The proposed directions of the guys and distance of the guys wires from
the tower base are as follows:
Guy 1 26 degrees and 74'.
Guy 2 150 degrees and 88'.
Guy 3 270 degrees and 70' (Guy 3 is located 7' BELOW the tower base).
I assume that the minimal difference between 120 degrees spacing and the
numbers shown above is not a problem, but what about the differences
between the distances of the guys from the tower base?
The different distances are necessary due to tree stumps, boulders, etc.
in my Connecticut woods.
I intend to (ultimately) stack 4 10 meter beams and 3 15 meter beams as
10 @ 96'
15 @ 90'
10 @ 69'
15 @ 60'
10 @ 46'
15 @ 30'
10 @ 23'
The Rohn 25 will be guyed @ 30, 60 + 90'. At the various heights, the
guy wires will come within about 3 feet of an element tip when the
antenna is turned at a certain angle (the end of the boom will NEVER
come closer than about 7' from the guy wire). Will this be a problem
for the SWR and radiation pattern of the antenna?
Would it help to use a SMALL non-resonant lenght of guy wire
"looking-at" the antenna in the horizontal plane or just use a "normal"
I'd really appreciate everyone's thoughts and comments on these
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