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From: Warren Ziegler <wd2xgj@gmail.com>
Date: Mon, 22 Oct 2018 09:28:55 -0400
Message-ID: <CAMFjj73Pi=fBGpN1AUj=NKzkvsvpRu0dY0mcpN_gvG8Pxd_6Rw@mail.gmail.com>
To: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Subject: Re: LF: Rogowski-coils for RF measurements
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Stefan,
   See John Andrew's web page :
http://www.w1tag.com/RFA.htm

73 Warren


On Mon, Oct 22, 2018 at 9:20 AM DK7FC <selberdenken@posteo.de> wrote:

> Hi all,
>
> Has someone ever build (homemade, not bought!) a Rogowski-coil for RF
> current measurements?
> https://en.wikipedia.org/wiki/Rogowski_coil
>
> It could be used to measure leakage currents in a tower near the antenna
> wire for example. Or for measuring RF currents into a pole of a guide
> rail, for example :-)
>
> I'm planning to build one and i thought i use 0.4 mm diameter enameled
> cu wire arround a graden hose, having 0.6m circumference. Then some
> shrinking tube will be applied. That's the plan.
>
> The circuit looks easy, it should be run from a 9V battery and a simple
> TL081 for example. The output could be adapted to a multimeter, so there
> is a digital read-out.
>
> I'm curious to see how it works...
>
>
> 73, Stefan
>
>

-- 
73 Warren K2ORS
                WD2XGJ
                WD2XSH/23
                WE2XEB/2
                WE2XGR/1

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<div dir=3D"ltr"><div dir=3D"ltr">Stefan,<div>=C2=A0 =C2=A0See John Andrew&=
#39;s web page :</div><div><a href=3D"http://www.w1tag.com/RFA.htm">http://=
www.w1tag.com/RFA.htm</a><br></div><div><br></div><div>73 Warren</div><div>=
<br></div></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr">On Mo=
n, Oct 22, 2018 at 9:20 AM DK7FC &lt;<a href=3D"mailto:selberdenken@posteo.=
de">selberdenken@posteo.de</a>&gt; wrote:<br></div><blockquote class=3D"gma=
il_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-lef=
t:1ex">Hi all,<br>
<br>
Has someone ever build (homemade, not bought!) a Rogowski-coil for RF <br>
current measurements?<br>
<a href=3D"https://en.wikipedia.org/wiki/Rogowski_coil" rel=3D"noreferrer" =
target=3D"_blank">https://en.wikipedia.org/wiki/Rogowski_coil</a><br>
<br>
It could be used to measure leakage currents in a tower near the antenna <b=
r>
wire for example. Or for measuring RF currents into a pole of a guide <br>
rail, for example :-)<br>
<br>
I&#39;m planning to build one and i thought i use 0.4 mm diameter enameled =
<br>
cu wire arround a graden hose, having 0.6m circumference. Then some <br>
shrinking tube will be applied. That&#39;s the plan.<br>
<br>
The circuit looks easy, it should be run from a 9V battery and a simple <br=
>
TL081 for example. The output could be adapted to a multimeter, so there <b=
r>
is a digital read-out.<br>
<br>
I&#39;m curious to see how it works...<br>
<br>
<br>
73, Stefan<br>
<br>
</blockquote></div><br clear=3D"all"><div><br></div>-- <br><div dir=3D"ltr"=
 class=3D"gmail_signature" data-smartmail=3D"gmail_signature">73 Warren K2O=
RS<br>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 WD2XGJ <br>=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 WD2XSH/23<br>=C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 WE2XEB/2<br>=C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 WE2XGR/1<br><br>=C2=A0</div>

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