Thanks for the info Mike! My Cushcraft A3S/743 antenna covers 10, 15, 20 and
has 40 meters.
73 de K5MLC
----- Original Message ----
From: Michael Germino <ad6aa@sbcglobal.net>
To: k5mlc@sbcglobal.net
Cc: towertalk <towertalk@contesting.com>
Sent: Thursday, July 17, 2008 10:04:58 AM
Subject: Re: [TowerTalk] another stupid guywire question
Get a copy of the ARRL Antenna book. It has a nice chart to show the
ungrounded wire lengths to avoid. Each band needs a different length.
>From the book
"Grounded wires will exhibit resonance at odd multiples of a quarter wavelength"
"For example, if you operate only the 14, 21 and 24-MHz bands, guy wire lengths
of 27 feet or 51 feet would be, suitable, along with any length less than 16
feet."
>From looking at the chart, it looks like for 10, 15 and 20 meters that about
>27 feet and any length less than 14 feet would be good.
Mike
AD6AA
"K5MLC (Mike)" <k5mlc@sbcglobal.net> wrote:
So, do you mean the insulators should be at 27' or less or more than 27'?
73 de K5MLC Mike
----- Original Message ----
From: bill rubin
To: K5MLC (Mike)
Sent: Wednesday, July 16, 2008 6:55:24 PM
Subject: Re: [TowerTalk] another stupid guywire question
i would recommend EHS as well. also the rule of thumb for the insulators is
~27ft. so i heard. I used and recommend using phillystran (Kevlar rope) made
for guy lines combined with EHS at the bottom. see more info at
texastowers.com
73 Bill N1HWC
see my tower project at n1hwc.com
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