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 > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
