Return-Path: Received: from mtain-mi06.r1000.mx.aol.com (mtain-mi06.r1000.mail.aol.com [172.21.131.164]) by air-mb08.mail.aol.com (v127_r1.1) with ESMTP id MAILINMB082-a7d84b8e2d08364; Wed, 03 Mar 2010 04:34:00 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-mi06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 3408338000084; Wed, 3 Mar 2010 04:33:58 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Nmkwe-0005qg-4x for rs_out_1@blacksheep.org; Wed, 03 Mar 2010 09:32:44 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Nmkwd-0005qX-PG for rsgb_lf_group@blacksheep.org; Wed, 03 Mar 2010 09:32:43 +0000 Received: from fmmailgate02.web.de ([217.72.192.227]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Nmkwa-0005Am-Rf for rsgb_lf_group@blacksheep.org; Wed, 03 Mar 2010 09:32:43 +0000 Received: from mwmweb077 (mwmweb077.dlan.cinetic.de [172.20.18.95]) by fmmailgate02.web.de (Postfix) with ESMTP id A0389151671FB for ; Wed, 3 Mar 2010 10:32:33 +0100 (CET) Received: from [88.76.34.151] by mwmweb077.dlan.cinetic.de with HTTP; Wed Mar 03 10:32:33 CET 2010 MIME-Version: 1.0 Date: Wed, 3 Mar 2010 10:32:33 +0100 (CET) Message-ID: <20712767.393458.1267608753646.JavaMail.fmail@mwmweb077> References: <4B8CE312.7090904@abelian.org> <20100302110052.BFCD8F3864@smtps02.kuleuven.be> <4B8D015B.10205@abelian.org> <4B8D5529.1060501@abelian.org>, <38A51B74B884D74083D7950AD0DD85E82A1B2C@File-Server-HST.hst.e-technik.tu-darmstadt.de> From: =?UTF-8?Q?Horst_St=C3=B6cker?= To: rsgb_lf_group@blacksheep.org X-UI-Message-Type: mail In-Reply-To: <38A51B74B884D74083D7950AD0DD85E82A1B2C@File-Server-HST.hst.e-technik.tu-darmstadt.de> X-Priority: 3 Importance: normal Sensitivity: Normal X-Provags-ID: V01U2FsdGVkX19Nq3VkPXzlp5ldYJ66TMT2aW+u2GMPZngFdFFpcpDg4j2Hmp5SxM2O 8M705S+g6qaWvUeKpqiFPJU5uACYmNOGY9JzphLxrbsitWUJUuWt+WDqX73cCLVA OP8R5X1b/Q8erPkE+CwxrDpL4Nk31P+NNpAktaW38dRg4Qdf8DKUIw== X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: 9kHz: soundcard RX Content-Type: text/plain; charset=UTF-8 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=0.8 required=5.0 tests=PRIORITY_NO_NAME 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-sid: 3039400cdece4b8e2d061d94 X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) >And what about a simple band pass filter to supress the 50Hz and it's har= monics? Necessary or dispensable? You can hear (!) the difference. I just took a 10mH coil from Reichelt to= improve my soundcard-RX before one of the last SAQ activities. Despite of more or less excellent digital filtering of SpecLab it's a good= idea. One should not keep the soundcard busy with unwanted signals. What I am not sure about is the use of an audio transformer. It might have= some influence to the signal. As it just has to keep the soundcard from= beeing blown it might be a good idea to take a cheap soundcard instead of= the audio transformer - and maybe a second in spare. Stefan, what USB-soundcard you bought for 10 EUR ? Horst DO1KHS ___________________________________________________________ GRATIS f=C3=BCr alle WEB.DE-Nutzer: Die maxdome Movie-FLAT! Jetzt freischalten unter http://movieflat.web.de