Re: Topband: Shunt-Fed tower how-to Video

[Roger Cooke]

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 

73, de steve ve6wz.



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Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Shunt-Fed tower how-to Video

[W7RH]

Great Job Steve (VE6WZ) on the shunt fed tower video. It's nice to see 
some quality technical chat on the reflector. yours is a great model for 
the new guys!


73

Bob, W7RH

--
W7RH DM35os

"It has become appallingly obvious that our technology has exceeded our 
humanity." - Albert Einstein

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Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Shunt-Fed tower how-to Video

[w5zn]

Steve,

This is an excellent tutorial. Thanks for not only sharing but taking 
the time to produce it as well.


73 Joel W5ZN


On 2019-04-24 20:03, VE6WZ_Steve wrote:

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 

73, de steve ve6wz.

_
Searchable Archives: http://www.contesting.com/_topband - Topband 
Reflector

_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Shunt-Fed tower how-to Video

[John Chappell G3XRJ]

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 

73, de steve ve6wz.



_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Topband: Shunt-Fed tower how-to Video

[VE6WZ_Steve]

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 

73, de steve ve6wz.
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Topband: Shunt-Fed tower how-to Video

[VE6WZ_Steve]

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 

73, de steve ve6wz.

_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector