Having done this myself, the answer is sure you can put up a guyed tower on a
slope. What's important to maintain are the angles of the guys to the tower
and the tension on them. If you maintain the same angles relative to the
tower, some will be shorter (uphill) and some will be longer (downhill) but
other than that there's not any magic besides basic geometry.
W2XX/7
On Mar 7, 2011, at 2:35 PM, Jerry Gardner wrote:
> I recently moved to a new QTH and want to put up a 70' tower for a 20m
> monoband yagi and a 15/10 duoband yagi.
>
> I have 10 acres, but the terrain is challenging. Almost all of it is on a
> fairly steep slope (probably about a 12-15% grade). There are several
> relatively flat areas, but none larger than about 20' x 20'. There are also
> telephone poles in the area carrying 13kV AC, so I need to avoid these.
>
> Under normal circumstances, my first choice would be a guyed tower using
> either Rohn 25G or 45G. Is a guyed tower even feasible with this kind of
> terrain? I assume that if it's possible at all, then the lengths of the
> three guys would not be equal and that this would affect the size and
> placement of the guy anchors. I have read several books describing the
> installation of guyed towers, but none of them address sloped terrain.
>
> Another option is a freestanding tower such as a crank-up or a Rohn SSV or
> an AN Wireless. No guys required, of course, but the trade-offs are higher
> cost and a larger concrete base.
>
> There is a semi-paved road leading to the site that will probably
> accommodate a cement truck and/or a crane.
>
> Any suggestions?
>
>
> 73, W6UV
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