Jut watched this video. It's given me added incentive to re-install my
gamma wire again! It fell down last winter. so, that's another project,
after re-ropi g my tower.
Very impressed with the presentation Steve.
Many thanks for making it.
I am the Prog Sec for the Norfolk ARC and wonder if you would be
interested in giving a talk to our club members next year? I arrange a
lot of these using Skype. We have quite a good set-up for that and have
about 160 members. Wemeet on a Wednesday evening from 1930 until 2100.
If you are willing, I will let you have a selection of dates to choose from.
73 de Roger, G3LDI.
On 25/04/2019 10:16, John Chappell G3XRJ wrote:
Steve,
That's an excellent video.
Both in the technique of shunt feeding and the overall video
presentation which sets the bar.
Most impressive.
73
John G3XRJ
This week I added a second gamma-wire to my shunt fed tower for 160m
in order to lower the reactance and therefore lower the voltage
across my matching network. This winter I was having some flash-over
problems.
While doing this work I decided to make a video that explains the
method for finding the 50 Ohm point on a tower, and the effect that
wire diameter has on the SWR bandwidth and reactance at the
feedpoint. I show how I use both the AIM-4170b and the AR 55 zoom
analyzers.
I wanted to post the link to the video here on the reflector because
over the years there have been a few questions about how to
shunt-feed a tower, and this might answer some practical questions
about how to go about it. Maybe someone has a summer project in mind
to turn their tower into a TX antenna?
https://youtu.be/cHlc5MTGTFM <https://youtu.be/cHlc5MTGTFM>
73, de steve ve6wz.
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