Peter wrote:

On Tue, 28 Dec 2004 02:36:11 -0500, Gary wrote:
I've looked at some commercial "full size" G5RV's and the leg lengths
are about 51 feet long each, that seems a tad short for 80 meters.

That's because the "missing" portions are in the open wire section.

Why the G5RV works well on 75m is explained using a Smith Chart on my
web page at: http://www.qsl.net/w5dxp/G5RV.HTM where it can be seen
that the series twinlead matching section transforms the antenna
feedpoint impedance of 36-j324 ohms to a resonant impedance of 17 ohms.
Even better is to install a 1000 pf cap across the line at the coax to
twinlead junction to achieve a near perfect match on 75m (remove for
use on the higher bands).
--
73, Cecil, W5DXP


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