MIME-Version: 1.0
In-Reply-To: <516CAAC2-5EF6-456A-80E9-A4697777371E@numeo.fr>
References: <516CAAC2-5EF6-456A-80E9-A4697777371E@numeo.fr>
Date: Wed, 6 Jul 2011 18:35:24 +0100
Message-ID: <CAA8k23RozZC=z-RygOoDFLb1TZaqhBE1Smfuxn8hZEnTydYd8Q@mail.gmail.com>
From: Andy Talbot <andy.g4jnt@gmail.com>
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: Circuit Analysis Programs
Content-Type: multipart/alternative; boundary=00221532cad88787ae04a76a06ca
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org
X-AOL-SCOLL-URL_COUNT: 0  
X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-m201.2 ; domain : gmail.com DKIM : pass  
x-aol-sid: 3039ac1d40824e149d132b2f
X-AOL-IP: 195.171.43.25
X-AOL-SPF: domain : blacksheep.org SPF : none


--00221532cad88787ae04a76a06ca
Content-Type: text/plain; charset=windows-1252
Content-Transfer-Encoding: quoted-printable

Probably the very thing you need.  A sort of RF network / impedance
calculator

http://www.ifwtech.co.uk/g3sek/netcalc/netcalc.htm

I've used an ancient DOS version of this for years.   And, personally still
prefer that one - but it is all windozised now

Andy
www.g4jnt.com


On 6 July 2011 18:21, John Rabson <john.rabson@numeo.fr> wrote:

> I am experimenting with various forms of matching network to go between m=
y
> 136kHz antenna and the transmitter. It would be very handy if I had a fai=
rly
> simple circuit analysis program with which to do the following:
>
> Having measured the input impedance to the combined matching unit and
> antenna, then =93subtract=94 the components of the matching network, see =
what I
> get and compare it with what I actually measure. I'm not always convinced
> that what I measure is what I think I'm measuring.
>
> Platforms available: XP, Linux and MacOs X.
>
> Yes, I could write something, but somebody must have done this and there =
is
> no point in reinventing the wheel.
>
> Any suggestions, please?
>
> Regards
> John F5VLF
>

--00221532cad88787ae04a76a06ca
Content-Type: text/html; charset=windows-1252
Content-Transfer-Encoding: quoted-printable

<div>Probably the very thing you need.=A0 A sort of RF network / impedance =
calculator</div>
<div>=A0</div>
<div><a href=3D"http://www.ifwtech.co.uk/g3sek/netcalc/netcalc.htm">http://=
www.ifwtech.co.uk/g3sek/netcalc/netcalc.htm</a></div>
<div><br>I&#39;ve used an ancient DOS version of this for years.=A0=A0 And,=
 personally=A0still prefer that one - but it is all windozised now</div>
<div>=A0</div>
<div>Andy</div>
<div><a href=3D"http://www.g4jnt.com/">www.g4jnt.com</a></div>
<div><br>=A0</div>
<div class=3D"gmail_quote">On 6 July 2011 18:21, John Rabson <span dir=3D"l=
tr">&lt;<a href=3D"mailto:john.rabson@numeo.fr">john.rabson@numeo.fr</a>&gt=
;</span> wrote:<br>
<blockquote style=3D"BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex=
; PADDING-LEFT: 1ex" class=3D"gmail_quote">I am experimenting with various =
forms of matching network to go between my 136kHz antenna and the transmitt=
er. It would be very handy if I had a fairly simple circuit analysis progra=
m with which to do the following:<br>
<br>Having measured the input impedance to the combined matching unit and a=
ntenna, then =93subtract=94 the components of the matching network, see wha=
t I get and compare it with what I actually measure. I&#39;m not always con=
vinced that what I measure is what I think I&#39;m measuring.<br>
<br>Platforms available: XP, Linux and MacOs X.<br><br>Yes, I could write s=
omething, but somebody must have done this and there is no point in reinven=
ting the wheel.<br><br>Any suggestions, please?<br><br>Regards<br>John F5VL=
F<br>
</blockquote></div><br>

--00221532cad88787ae04a76a06ca--