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Re: [TowerTalk] another stupid guywire question

To: Michael Germino <>
Subject: Re: [TowerTalk] another stupid guywire question
From: "K5MLC \(Mike\)" <>
Date: Thu, 17 Jul 2008 08:55:08 -0700 (PDT)
List-post: <">>
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 <>
Cc: towertalk <>
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 
>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.

"K5MLC (Mike)" <> 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  

73 Bill N1HWC

see my tower project at

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