I agree with Tom on this. My simple solution is a length of wire, center fed with light weight TV 300 ohm line which is terminated into a 1:1 current balun at the radio. Put it up in any fashion, any height and enjoy everything from 160M - 6M as long as the internal tuner will handle the task. It will work very efficiently on any frequency where the length is 1/2 wave or more and with some compromise on those frequencies where it is less than 1/2 wavelength. Overall the costs is less than $50 and can be packed and transported very easily. From experience it makes no difference if it is 5 ft above ground tied between bushes or at 50 ft. The performance and enjoyment is the same. And it is certainly much less problematic than those that use coils and mechanical parts and lighter weight too.
73 Bob, K4TAX ----- Original Message ----- From: "Tom W8JI" <w...@w8ji.com> To: <Elecraft@mailman.qth.net> Sent: Thursday, April 08, 2010 10:17 AM Subject: Re: [Elecraft] Using "Buddi Pole" Deluxe Antenna with K3 > Antennas are a magical gray world of what makes everyone > happy, but they all work a certain scientific way that we > cannot change. > > The Buddipole, being a shortened and "offset feed" antenna, > is going to have a whole lot of feedline radiation and > common mode back to the rig. It would take extraordinary > efforts to stop the common mode. This does not mean we would > always NOTICE the common mode, it just means it would be > there. Many times this common mode is how very small > antennas get most of their radiation. > > Some people will love them, some will hate them, mostly > because of the things we don't even realize are affecting > the performance. > > The proper way to tune one is to tune the antenna for lowest > SWR with the tuner off at the desired frequency, and then > use the tuner for touch-up only. > > > 73 Tom > > ______________________________________________________________ > 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
