Hi Mike,
Running along close to a barbed wire fence, let's call that any wire-based
or metal fence, will trash the performance in most cases. This includes an
electric fence. If you are the owner or are in good relations with them the
fence can be electrically broken up into non resonant (shorter
I am looking to supplement my RCV arrays with a bi directional Beverage
at about 70 degrees.
The path is along an existing barb wire fence line. I can run it approx
480 ft. The last 150 ft or so there is an overhead power line that
feeds the adjacent property owner.
I can run the beverage
The way I looked at it was that the equivalent diameter would be a bit less
than twice the diameter of the wires plus the spacing. According to the Mil
Spec for WD-1A/TT is 0.84mm diameter per conductor spaced 0.84mm (or perhaps
0.72mm if just twice sheath diameter.
That gives around 2.5mm. T
I've just finished putting up a ~300m NE/SW reversible beverage at G4AQG using
two pairs of paralleled WD1/TT wire for the feeder, spaced 50mm apart.
I used nine 2.7m 3x3 posts with electric fence insulators on top. The posts
are held in the ground with a metal fence post spike.
The wire is se
No my mistake as the spacing of the two parallel conductors would
determine the impedance but the mismatch from 600 ohms to 450 would
also not be good. It wold be easier to get working IMHO with a single
run of WD-1a and the proper feed and termination transformers. Perhaps
Gary KD9SV would
The way I understand is that you will be using the WD-1A as individual lines
with each having its wires connected in parallel.
Id start by calculating the resultant wire gauge such as say two #24 in
parallel = a #21; I dont know what the fudge factor would be due to wire and
jacket insulations
gt; David Harmon
> K6XYZ
> Sperry, OK
>
> -Original Message-
> From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Herbert
> Schoenbohm
> Sent: Saturday, September 20, 2014 9:34 AM
> To: topband@contesting.com
> Subject: Re: Topband: Beverage Question
>
> Thanks for the info and suggestions, Herb. One additional question,
> however. Are you certain the 100 ohm impedance of the WD – 1 pertains
> to two parallel links of the wire, with 6 inch spacing? I know that
> open wire feeders with 6 inch spacing typically have about 600 ohms of
> impedance.
>
I have had excellent success with the clothesline pulleys. They are clearly
not life-rated or mariner quality, but for ham antenna use I strongly
recommend them. I have had several in trees/sky for 5+ years and have not
observed any UV degradation.
Tim N3QE
On Sat, Sep 20, 2014 at 10:06 AM, Jim G
pband-boun...@contesting.com] On Behalf Of Herbert
Schoenbohm
Sent: Saturday, September 20, 2014 9:34 AM
To: topband@contesting.com
Subject: Re: Topband: Beverage Question
Jim, The DXE boxes are designed for 450 ohm ladder line which has a much
higher impedance than WD1-A wire. Using the DXE boxes ma
Jim, The DXE boxes are designed for 450 ohm ladder line which has a much
higher impedance than WD1-A wire. Using the DXE boxes may work but
Gary's boxes (KD9SV) will work better as they are designed for the 100
ohm impedance of WD-1A. I also understand that DXE may now sell the
boxes designed
I want to replace the 450 ohm ladder line for my two DXE 720 ft long
bi-directional beverages with two lengths of WD-1/TT field telephone wire.
The wires will be secured only at the ends, but will be suported along their
length by ceramic insulators mounted on 4x4 posts spaced every 60 ft. The
spa
: Re: Topband: Beverage question
> So, how to measure the bev? Is this procedure correct:
> The bev is ~8 feet above ground. The far end is open, not grounded, no
> resistor.
> The analyzer connects directly to the bev and the ground rod at the rx
> end through its bnc-to-bana
So, how to measure the bev? Is this procedure correct:
The bev is ~8 feet above ground. The far end is open, not grounded, no
resistor.
The analyzer connects directly to the bev and the ground rod at the rx end
through its bnc-to-banana plug adaptor . Measure and note the impedances
for 160, 80
Topbanders,
I didn´t make many qso´s on topband in the cq-ww, but
the single wire beverage at DL0WH has proven efficiency. I was called by
a few na-stations and called a few myself. Obviousely, the K2AV inv-L
over an FCP and the bev combo worked fine. I mostly rxed with the bev.
Just minutes af
Hello Andrew,
On Sun, Jul 31, 2011 at 11:33 AM, wrote:
> I realize now that I had not understood the way that bidirectional
> Beverages work ...
>
There's more than one way to switch directions. My Beverage antenna page
completely explains it all.
http://www.w0btu.com/Beverage_antennas.html
H
Hello and thanks for all the replies on the list and directly.
I realize now that I had not understood the way that bidirectional
Beverages work when they use only one coax. Perhaps there are others
who have made or are making the same mistake so I will explain where I
went wrong.
I thought that
Hello Andrew,
try to read
http://translate.google.com/translate?hl=en&rurl=translate.google.com&sl=ru&u=http://dl2kq.de/ant/3-24.htm
73 de DL2KQ
30.07.2011 17:02, li...@lissa.dk wrote:
> Hello there, this is Andrew OZ5E,
>
> Our 4-directional Beverage (ladder line) works fine but sometimes we
>
input.
73 Hardy N7RT
- Original Message -
From:
To:
Sent: Saturday, July 30, 2011 7:02 AM
Subject: Topband: Beverage question
> Hello there, this is Andrew OZ5E,
>
> Our 4-directional Beverage (ladder line) works fine but sometimes we
> would like to be able to operate on 8
li...@lissa.dk schreef:
> Hello there, this is Andrew OZ5E,
>
> Our 4-directional Beverage (ladder line) works fine but sometimes we
> would like to be able to operate on 80 and 160 at the same time from 2
> different stations on the same property. The easiest way would be to
> use the same support
Hello there, this is Andrew OZ5E,
Our 4-directional Beverage (ladder line) works fine but sometimes we
would like to be able to operate on 80 and 160 at the same time from 2
different stations on the same property. The easiest way would be to
use the same supports and run the ladder lines close to
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