[Elecraft] K3 & S9 43' Vertical

[Paul Christensen]

In addition to AD5X's excellent work, anyone considering installation of a 
43' vertical should first read Owen Duffy's (VK1OD) well-researched 
information, especially his information concerning feed-point alternatives:

http://vk1od.net/antenna/multibandunloadedvertical/index.htm

One reason for the 43' vertical's popularity is that typical radiation 
resistance is better than 100 ohms on 40m-10m -- but falls to less than 10 
ohms on 80m and much lower on 160m. On 160m/80m, system losses typically 
drop nearly in half with an ATU placed at the base feed when compared to a 
4:1 current balun feed with ATU at the transmitter.

Paul, W9AC

----- Original Message ----- 
From: "Julius Fazekas n2wn" <phriendly1 at yahoo.com>
To: <elecraft at mailman.qth.net>
Sent: Tuesday, March 22, 2011 12:51 PM
Subject: Re: [Elecraft] K3 & S9 43' Vertical


> Hi Tom,
>
> Check out Phil's, AD5X, site: http://www.ad5x.com/articles.htm
>
> He has written a number of articles related to your questions. Good
> information with plenty of "how to" ideas with locally found materials.
>
> Elecraft's Balun kit is also capable of 1:4 unun and will easily work with
> any 100 watt rig.
>
> QST has had several items related to the ubiquitous 43' verticals that are
> all the rage now. I see at least one person has mentioned radials, which 
> are
> a must have to effectively use this antenna on 80-30.
>
> The K3's ATU is very effective, but keep in mind that you will be matching
> the feedline and antenna as a unit, versus matching just the antenna. The 
> K3
> will most likely find a match most of the time, but you still could be
> seriously mismatched at the antenna. It may work, it just won't work well.
>
> GL es 73,
> Julius
>
> -----
> Julius Fazekas
> N2WN
>
> Tennessee Contest Group
> http://www.k4ro.net/tcg/index.html
>
> Tennessee QSO Party
> http://www.tnqp.org/
>
> Elecraft K2        #4455
> Elecraft K3/100 #366
> Elecraft K3/100 #1875
> --
> View this message in context: 
> http://elecraft.365791.n2.nabble.com/K3-S9-43-Vertical-tp6193993p6197137.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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