Leigh,
My doublets work great on the higher bands. In theory, the lobe
configuration does changes with wavelength n of the wire, so you have
roughly 2n lobes. But you also get some gain, and, more importantly, a
lower peak angle of radiation. You can read all about it in W4RNL's
great write up:
http://www.cebik.com/wire/abd.html
73, steve, kx7r
Leigh L Klotz, Jr. wrote:
What is the difference between the G5RV and the twinlead-fed 102'
doublet with a current balun at the coax-to-balanced transition
mentioned as an alternative? Is it just the random length of twinlead
rather than a calculated length? Or is it a long run of coax vs. a
short one?
I know some people with G5RV's advocate a long coax run, but that just
adds loss, so I kept mine as short as possible. Mine works ok on the
low bands, but poorly on 15m and up. Wouldn't an 80m dipole be even
worse, with many more strange lobes?
Leigh / WA5ZNU
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