The Buddipole includes a short bead balun, but it's a bit weenie. I suspect it's designed to allow the coax to be a radial at the lower frequencies, but I'd have thought it would do better at 20 meters. (I've not had this problem by the way.) Wrapping 8 turns through a big #31 or #77 toroidal core a few feet away from the rig will still let it be part of the ground system but will keep the RF away from the rig.
You might also consider the Buddipole RRSB balun, which offers step-down impedance settings. (Elecraft sells fine baluns for 1:1 and step-up, but they don't have a step-down balun.) Electrically short antennas have lower than 50 ohm impedance at resonance, so impedance matching at the antenna to get closer to 50R is helpful, even if you make the antenna resonant (X=0). Such a balun then serve two purposes, and would be especially useful for the lower bands, when using a vertical and a couple of elevated radials for your ground. Leigh/WA5ZNU -- View this message in context: http://n2.nabble.com/Buddipole-tp4565626p4567469.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
