I thought that you could safely put 30 feet of Rohn 25 un guy above a
good house or side building bracket. That is what I use here for an
10/12/ and six meter tower but to get to 60' I have a set of Phillystran
guys at the rotor plate. The house bracket is in to 2X6 and they are
back by a long 1 X4 .of treated lumber with over sized washers and nuts.
Herb Schoenbohm, KV4FZ
On 12/14/2015 10:29 AM, Chuck Dietz wrote:
And I would not hesitate to put up 30 feet of Rohn 25 with only one set of
guys at the top.
Chuck W5PR
On Mon, Dec 14, 2015 at 8:27 AM, Chuck Dietz <w5prchuck@gmail.com> wrote:
A couple of inverted V antennas could help the guying of a small roof top
tower too...
Chuck W5PR
On Mon, Dec 14, 2015 at 7:19 AM, Ed Sawyer <sawyered@earthlink.net> wrote:
Stan, K5GO said "At risk of purists saying absolutely not, if I were going
to put up just 30 feet of 25G tower and didn't have all the proper
materials
to insulate the guy wires and guy it as would normally be done, I wouldn't
hesitate for a moment to put two levels on that small tower using 3/8"
diameter polyester (Dacron) low stretch rope. The antenna will blow apart
first eliminating a potential problem and rope doesn't rust."
I would second Stan's suggestion for 2 reasons: 1) a spider beam is going
to
collapse anyway under a really strong Hurricane wind and 2) whenever
someone
says "rooftop" tower, what they really are saying is "how strong are my
anchor points anyway?". This is all about the ability of the guy anchors
to
support the pull of the tower in wind. Rarely is any roof connection
system
up to the task. By support with a strong rope, you kill many birds with
one
stone and you likely don't add any weakness vs the anchor points.
I had a 60 ft tower of 25G support by 2 sets of rope guys for 5 years as
my
160M vertical. It was heavy rope and there was a plate under the tower.
It
was purposely not permanent because it was on a farmers land. I had to
remove it when the land sold. Now I have 2 T top wire verticals - phased.
Ed N1UR
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