On Thu, 09 Jun 2005 06:23:44 -0500, Cecil Moore
wrote:

Buck wrote:
The G5RV is a twenty meter antenna, isn't it? It needs a tuner on all
other bands if I am not mistaken.

The G5RV needs a tuner on all bands. Acceptable SWRs are
very rare without a tuner. The G5RV is 1.5WL long on
20m. The resonant feedpoint impedance on 20m is in excess
of 100 ohms giving a 50 ohm SWR in excess of 2:1 so a
tuner is required, even on 20m. However, I have done to
a G5RV what Fred has done to a 1/2WL 80m dipole. The
matching section on my G5RV is a variable length between
22' and 38'. My G5RV has an SWR below 1.5:1 on all eight
HF bands. I'm going to write it up one of these days.

This is interesting. I remember reading where the G5RV originated as
a gain dipole for 20 meters. I hadn't looked at it as a 1.5wl dipole.
I have always used 1.5wl dipoles for 15 (40 meters) and had low SWR on
the 15 meter band without a matching network. Am i missing something
or is the coax stealing enough power to reduce the SWR?


--
73 for now
Buck
N4PGW