[TowerTalk] Quarter wave baluns

[Dan Hearn]

If you are an antenna fan you are probably aware of the work done by G0KSC
to design yagi antennas having exceptionally low radiation off the rear and
wide bandwidth. These are described on his web page and, I believe, are
offered by F12. One uses a loop radiator and the other uses a split dipole.
One version uses a rather unorthodox quarter wave balun formed by connecting
a 1/4 wave long bar from the coax center connection on the dipole which runs
along the boom and is connected to it at the other end. It is not connected
to the feed line coax 1/4 wavelength from the feed point. I do not
understand how this works.
  This does not seem to agree with the explanation of the usual quarter wave
balun found here.
http://www.antenna-theory.com/definitions/foldedbalun.php

Any comments?

-- 
Dan Hearn
N5AR