Wire antenna feed-line questions
On 10/15/2012 6:42 PM, W5DXP wrote:
On Monday, October 15, 2012 2:59:37 PM UTC-5, Boomer wrote:
(A G5RV) is not actually a bad antenna on 20 meters. However, the
performance on 75 is abysmal.
Would you please itemize the losses and radiation patterns that explain why you believe that to be true for 75m?
--
73, Cecil, w5dxp.com
I don't have any of the math for you. However, I know what works and
what does not. You probably do not listen to your own G5RV. Its poor
performance is pretty clear to anyone who listens to you. However, if
you have an emotional bond with your G5RV, I would not want to be the
cause of any alienation in your relationship. Keep using it. The low
effective radiation makes for more band space for the rest of us. The
signal just disappears into the noise level.
Better yet just put up a random wire and a water pipe for ground. You
can get a perfect match with a tuner. It will work better than the long
wire the guy wanted to bury in the ground :-) In fact I recommend you
try burying your G5RV and make a stealth G5RV. It will still load with a
good tuner.
However, if you were actually interested in improving your transmitted
and received signal, you might tune around 75 and listen to those
stations putting out a big signal. Especially in the daytime when band
conditions are bad. Ask someone with that big signal what antenna they
are using. If they are using a G5RV then you are right and I am wrong.
Michael
|