If you live in an area that could see a wildland fire, you definitely
want some EHS at the ground to about 15ft off the ground and even then
it might not matter if the fire is hot enough.
W0MU
On 12/16/2019 10:58 AM, Wayne Kline wrote:
Ignacy,
According to the BIBLE (Rohn) product catalog @ 100 ft. of R45- Zone B 40FSF
= three layers of 1/4 EHS. = 6650 lb tensial strength
So IMO PhillyStran HTPG 6700 should be used for all three levels of guys. IF you
chose to use ¼ EHS the info for none resonante
http://ve3vn.blogspot.com/2017/05/planning-around-guy-wire-interactions.html
info on lengths on this link.
I have advised hams who do not have ANY material on hand as a sugjestion to
go to R-55 at 100 ft level.
Why you only need TWO levels of Guys and If you compare the cost of TOWER . EHS
guy wire 50s insulators and Crosby cable clamps (6) for each insulator and (3) for
each or substute PLP line products BIG grips . Then the two levels you need
with R-55 end use EHS with 502 insulators and cable clamps on R-55 and the
Phillystran and the PLP big grips 18 and 9 conventional PLP ¼ EHS Big grips
9 502 insulatore.
It’s all about the numbers BUT imo the installation would only be built with
¼ EHS and only 6700 Phillystran.
My .02
Wayne ,W3EA
Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
From: Mpridesti via TowerTalk<mailto:towertalk@contesting.com>
Sent: Monday, December 16, 2019 10:47 AM
To: K9MA<mailto:k9ma@sdellington.us>
Cc: towertalk@contesting.com<mailto:towertalk@contesting.com>
Subject: Re: [TowerTalk] 45G and guys
In an off list email, I advised pretty much the same.
Happy Holidays Scott!
Regards,
Mark, K1RX
On Dec 16, 2019, at 10:43 AM, K9MA <k9ma@sdellington.us> wrote:
I'd recommend Phillystran for the top guys, but EHS the first few feet from the
tower, and up about 15 feet from the ground. The former protects against
something getting dropped from the tower, the latter from vandals and other
animals. I'd probably do that with the middle guy, as well. Otherwise, be sure
to break it up with insulators into non-resonant lengths.
For shunt feeding, all the guys definitely need Phillystran or an insulator
near the tower. Even the lower guys, though, should be broken up into
non-resonant lengths with insulators.
73,
Scott K9MA
On 12/16/2019 09:12, Ignacy Misztal wrote:
I want to have a 100ft 45G installed on my new property. It will hold JK
Mid Tri 40 on top. I plan on adding a Yagi with a swinging gate at lower
level later, and perhaps shunt loading for 160 and 80m.
My installer wants to use 3 sets of EHS wires. He is ready to substitute
the top one with Phillistran. So here are my questions:
Are EHS guys likely to cause interactions with top and medium beams?
Do EHS guys compromise tower for 160M shunt feeding?
Do I need 3 sets of guys?
Should I move to Phillistran?
Is Phillistran 7000 lb on top and 4000 at bottom good enough?
The installer wants to build the tower with the beam on top. Have the beam
at 3 ft, then raise to 13, 23,....Perhaps that's why 3 sets of guys. The
location is in E GA, with relatively low wind.
Ignacy, NO9E
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Scott K9MA
k9ma@sdellington.us
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