[TowerTalk] another stupid guywire question

K5MLC (Mike) k5mlc at sbcglobal.net
Thu Jul 17 11:55:08 EDT 2008

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 at sbcglobal.net>
To: k5mlc at sbcglobal.net
Cc: towertalk <towertalk at 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.

"K5MLC (Mike)" <k5mlc at 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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