[Elecraft] Buddipole

[Leigh L. Klotz Jr WA5ZNU]

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
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