Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-de01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 197D3380001A8; Wed, 6 Jul 2011 13:36:04 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1QeW0H-000847-6y for rs_out_1@blacksheep.org; Wed, 06 Jul 2011 18:35:13 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1QeW0G-00083y-Kt for rsgb_lf_group@blacksheep.org; Wed, 06 Jul 2011 18:35:12 +0100 Received: from rhcavuit01.kulnet.kuleuven.be ([134.58.240.129] helo=cavuit01.kulnet.kuleuven.be) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1QeW0E-0007zd-TI for rsgb_lf_group@blacksheep.org; Wed, 06 Jul 2011 18:35:12 +0100 X-KULeuven-Envelope-From: rik.strobbe@fys.kuleuven.be X-KULeuven-Scanned: Found to be clean X-KULeuven-ID: 461C813818D.AB6D1 X-KULeuven-Information: Katholieke Universiteit Leuven Received: from smtps02.kuleuven.be (smtpshost02.kulnet.kuleuven.be [134.58.240.75]) by cavuit01.kulnet.kuleuven.be (Postfix) with ESMTP id 461C813818D for ; Wed, 6 Jul 2011 19:35:03 +0200 (CEST) Received: from ICTS-S-HUB-N2.luna.kuleuven.be (icts-s-hub-n2.luna.kuleuven.be [10.112.9.12]) by smtps02.kuleuven.be (Postfix) with ESMTP id 283C5F3862 for ; Wed, 6 Jul 2011 19:35:03 +0200 (CEST) Received: from ICTS-S-EXC2-CA.luna.kuleuven.be ([10.112.11.13]) by ICTS-S-HUB-N2.luna.kuleuven.be ([10.112.9.12]) with mapi; Wed, 6 Jul 2011 19:35:03 +0200 X-Kuleuven: This mail passed the K.U.Leuven mailcluster From: Rik Strobbe To: "rsgb_lf_group@blacksheep.org" Date: Wed, 6 Jul 2011 19:33:14 +0200 Thread-Topic: Circuit Analysis Programs Thread-Index: Acw8AZMSpC+cmimFTjig6aIlVeOKegAATVL3 Message-ID: References: <516CAAC2-5EF6-456A-80E9-A4697777371E@numeo.fr> In-Reply-To: <516CAAC2-5EF6-456A-80E9-A4697777371E@numeo.fr> Accept-Language: nl-NL, nl-BE Content-Language: nl-BE X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: nl-NL, nl-BE MIME-Version: 1.0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: RE: Circuit Analysis Programs Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable 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=TO_ADDRESS_EQ_REAL 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: 0:2:311269824:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d40c94e149d03283c X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none John, you could use SIMetrix (www.simetrix.co.uk) but it might be a bit overshoot= . Anyway, they have a free (and very useful) demo version. 73, Rik ON7YD - OR7T ________________________________________ Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org= ] namens John Rabson [john.rabson@numeo.fr] Verzonden: woensdag 6 juli 2011 19:21 Aan: rsgb_lf_group@blacksheep.org CC: Robin Gape Onderwerp: 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 fairl= y simple circuit analysis program with which to do the following: Having measured the input impedance to the combined matching unit and anten= na, 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 t= hat 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=