Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-de05.r1000.mx.aol.com (Internet Inbound) with ESMTP id 0223438000192; Wed, 6 Jul 2011 13:52:50 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1QeWGW-0008O1-4x for rs_out_1@blacksheep.org; Wed, 06 Jul 2011 18:52:00 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1QeWGV-0008Ns-Kw for rsgb_lf_group@blacksheep.org; Wed, 06 Jul 2011 18:51:59 +0100 Received: from mailout-de.gmx.net ([213.165.64.22]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from <cpaul@gmx.net>) id 1QeWGT-0008OQ-13 for rsgb_lf_group@blacksheep.org; Wed, 06 Jul 2011 18:51:59 +0100 Received: (qmail invoked by alias); 06 Jul 2011 17:51:50 -0000 Received: from p4FD0CAC2.dip.t-dialin.net (EHLO Clemens04) [79.208.202.194] by mail.gmx.net (mp054) with SMTP; 06 Jul 2011 19:51:50 +0200 X-Authenticated: #17214767 X-Provags-ID: V01U2FsdGVkX199rkgojXB9evof2mv/7zA0ctwkxS5yDay9IBHoWo ISkgNHf9lFduCT Message-ID: <005a01cc3c05$625432d0$1502a8c0@Clemens04> From: "Clemens Paul" <cpaul@gmx.net> To: <rsgb_lf_group@blacksheep.org> References: <516CAAC2-5EF6-456A-80E9-A4697777371E@numeo.fr> Date: Wed, 6 Jul 2011 19:51:42 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3664 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3664 X-Y-GMX-Trusted: 0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: Re: Circuit Analysis Programs Content-Type: text/plain; format=flowed; charset="Windows-1252"; reply-type=original Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:384186848:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d40cd4e14a0f278a0 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none You could use a handy smith program (free) from http://www.fritz.dellsperger.net/ Smith V3.10 Setup Easy to use,no steep lerning curve. :-) The circuit elements are lossless though. Another free smith chart program is at http://ussu.us/Smith_Charts.html Alternatively you could use TLW3 by Dean Straw (ARRL) which is included with the ARRL antenna handbook,but not downloadable from elsewhwere. It can deal with lossy components. 73 Clemens DL4RAJ ----- Original Message ----- From: "John Rabson" <john.rabson@numeo.fr> To: <rsgb_lf_group@blacksheep.org> Cc: "Robin Gape" <robingape@ukfsn.org> Sent: Wednesday, July 06, 2011 7:21 PM Subject: LF: Circuit Analysis Programs I am experimenting with various forms of matching network to go between my 136kHz antenna and the transmitter. It would be very handy if I had a fairly simple circuit analysis program with which to do the following: Having measured the input impedance to the combined matching unit and antenna, then “subtract” 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 ----- eMail ist virenfrei. Von AVG überprüft - www.avg.de Version: 10.0.1388 / Virendatenbank: 1516/3747 - Ausgabedatum: 06.07.2011