[Elecraft] KAT2 with EFHW antenna

[stan levandowski]

And for those with more money than brains (that would be me) you can 
purchase an end fed halfwave antenna from the Emergency Radio Club of 
Hawaii for $42.  I bought one and it works great with the entire 
Elecraft family. Great to have a simple yet efficient portable antenna 
that fits into a sandwich baggie.   This site also has the plans to 
build this one on your own if you would prefer.

The main website is at:  http://www.earchi.org/proj_homebrew.html

The page for building it yourself is at: 
http://www.earchi.org/pdf/endfed.pdf

And the page for the 'easy way out' is at: 
http://www.earchi.org/pdf/endfed20.pdf


73, Stan WB2LQF
KX1 #2411    K1#2994    K2# 6980    K3#5244     K9 #1 (Cocoa the 
Chihuahua)
Everything is QRP, even the dog.





On Wed, Aug 24, 2011 at 9:54 AM, William Ravenel wrote:

> Steve Yates, AA5TB, has a very informative web page on EFHW antennas 
> and how to build a parallel tuned circuit with a link coupled feed at 
> the radio end to reduce the 1800 to 5000 ohm impedance to a 50 ohm 
> non-reactive load. He has examples of both QRP and QRO versions of the 
> circuit. I built the QRP version which uses a polyvaricon capacitor 
> (available through Hendrix Kits among other sources) to create a very 
> small tuning device that will match resonant End Fed half wavelength 
> antennas on 40m, 30m, 20m, and 17m. I use it mostly with a 33 foot 
> wire on 20m raised on a 31 foot Jackite fiberglass pole and have had 
> fun working DX with 5 watts. It is easy to change bands by exchanging 
> the wire with one cut for the band of interest. I do not use a 
> counterpoise and do not have any trouble at the rig. Steve explains 
> why this works. For higher power a one meter counterpoise helps. I use 
> this antenna with a K1 and K2, both with internal antenna tuners. The 
> tuners are not needed, but I
>   leave them activated to easily compensate for any small mismatch 
> across the band.
>
> Steve's page is found at http://aa5tb.com/efha.html
>
> William Ravenel, AI4VE
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