Re: Topband: Beverage construction

[Mike Waters]

This is great advice, Greg!

On Fri, Nov 24, 2017 at 7:32 PM, Greg Chartrand via Topband <
topband@contesting.com> wrote:

> Carol,
> What kind of transformer are you using? The best transformers are the
> binocular core transformers that have separate primary and secondary
> isolated winding's.
> Did you keep the coax shield disconnected from the ground rod? The
> secondary should connect the beverage one one wire and ground rod on the
> other. The primary should have the coax center and shield NOT connected to
> anything else.
> Are you sure your shield is intact? Check continuity.
> GregW7MY
>

73, Mike
http://www.w0btu.com/Beverage_antennas.html
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Topband: Beverage construction

[Greg Chartrand via Topband]

Carol,
What kind of transformer are you using? The best transformers are the binocular 
core transformers that have separate primary and secondary isolated winding's.  
Did you keep the coax shield disconnected from the ground rod? The secondary 
should connect the beverage one one wire and ground rod on the other. The 
primary should have the coax center and shield NOT connected to anything else.
Are you sure your shield is intact? Check continuity.
GregW7MY

 Subject: Topband: Beverage constructionMessage-ID: 

Content-Type: text/plain; charset=utf-8; format=flowed

Hello all,


I finally put up a beverage antenna...about 400 feet long. I am feeding 
it through a 9:1 transformer with some 50 ohm cable ( RG 59). I am 
finding that it is noisier than my transmit antenna, contrary to what it 
should be. The wire stays about 6-8feet above ground. ground rods at 
each end, etc.

Any thoughts on the problem and a cure?


Thanks,


Carol

- Greg Chartrand - W7MY 
Richland, WA. W7MY Home Page: http://webpages.charter.net/w7my/

 
   
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Re: Topband: Beverage construction problem solved

[Mike Waters]

Glad to hear that you solved this. :-) If everything's working you'll
notice a BIG difference in hearing low-angle weak signals 800 miles away, *and
especially way beyond that distance!* It's all about improving your RX S/N
ratio.

If you don't, then where is your Beverage pointed, and what state are you
in? My signals from SW MO are only about 10 dB down (when pointed towards
Europe, for example). You'll see why I'm asking this at
www.w0btu.com/Beverage_antennas.html#Misc_Beverage_antenna_notes

73, Mike
www.w0btu.com

On Fri, Nov 24, 2017 at 3:06 PM, Carol Richards  wrote:

>
> Hello all and many thanks for your solutions to my beverage problem.
>
>  It turned out that I had a bad transformer and several bad F-fitting
> connections.  It was the first time I had ever used a tool for this
> purpose. Noise is gone on the beverage and as expected signals on the
> beverage are much lower than on the transmit. How well it will work...I'll
> just have to see...lol
>
>
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Re: Topband: Beverage construction problem solved

[Carol Richards]

Hello all and many thanks for your solutions to my beverage problem.

 It turned out that I had a bad transformer and several bad F-fitting 
connections.  It was the first time I had ever used a tool for this 
purpose. Noise is gone on the beverage and as expected signals on the 
beverage are much lower than on the transmit. How well it will 
work...I'll just have to see...lol



Again, many thanks to all...


Carol
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Re: Topband: Beverage construction

[Ed Sawyer]

I have found that a common source of noise on beverage systems is the need
to use the small F type connectors and the crappy F type coax that is often
on the jumpers as well as just converting it all to the final input to your
receiver.

 

Try the simplest but clean and checked coax directly from the beverage to
the receiver first to see if there is any noise.  Then add in the elements
that might be present on the normal way into the shack and through any items
along the way.

 

I had a high pass broadcast filter that was the cause of noise at one point.

 

A beverage with no preamp should be MUCH quieter than your transmit antenna
on 80.  In my case it's a 6 S unit drop.

 

Ed  N1UR

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Re: Topband: Beverage construction

[CT1EKD]

Hi
RG59 is 75 ohm and RG58 is 50/52 ohm. I'm sure the noise is not coming  
from this difference, but swr may be there..


Pedro - CT1EKD







Citando Carol Richards :


Hello all,


I finally put up a beverage antenna...about 400 feet long. I am  
feeding it through a 9:1 transformer with some 50 ohm cable ( RG  
59). I am finding that it is noisier than my transmit antenna,  
contrary to what it should be. The wire stays about 6-8feet above  
ground. ground rods at each end, etc.


Any thoughts on the problem and a cure?


Thanks,


Carol

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