Return-Path: Received: (qmail 47480 invoked from network); 12 Jan 2005 20:46:15 -0000 Received: from unknown (HELO ptb-spamcore01.plus.net) (192.168.71.1) by ptb-mailstore02.plus.net with SMTP; 12 Jan 2005 20:46:15 -0000 Received: from mailnull by ptb-spamcore01.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1CopNl-000Hjg-Qa for dave@picks.force9.co.uk; Wed, 12 Jan 2005 20:46:22 +0000 Received: from [192.168.67.1] (helo=ptb-mxcore01.plus.net) by ptb-spamcore01.plus.net with esmtp (Exim 4.32; FreeBSD) id 1CopNl-000HjN-4C for dave@picks.force9.co.uk; Wed, 12 Jan 2005 20:46:21 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore01.plus.net with esmtp (Exim 4.30; FreeBSD) id 1CopNe-0000vI-Jq for dave@picks.force9.co.uk; Wed, 12 Jan 2005 20:46:14 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1CopNV-0000IE-Fo for rs_out_1@blacksheep.org; Wed, 12 Jan 2005 20:46:05 +0000 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1CopNV-0000I5-4b for rsgb_lf_group@blacksheep.org; Wed, 12 Jan 2005 20:46:05 +0000 Received: from mout2.freenet.de ([194.97.50.155]) by relay.thorcom.net with esmtp (Exim 4.43) id 1CopNS-0007cv-O3 for rsgb_lf_group@blacksheep.org; Wed, 12 Jan 2005 20:46:05 +0000 Received: from [194.97.55.147] (helo=mx4.freenet.de) by mout2.freenet.de with esmtpa (Exim 4.43) id 1CopNA-0002i2-6v for rsgb_lf_group@blacksheep.org; Wed, 12 Jan 2005 21:45:44 +0100 Received: from pd4b9e1ae.dip.t-dialin.net ([212.185.225.174] helo=[192.168.0.200]) by mx4.freenet.de with esmtpsa (ID dl4yhf@freenet.de) (TLSv1:AES256-SHA:256) (Exim 4.43 #13) id 1CopNA-0001uH-1h for rsgb_lf_group@blacksheep.org; Wed, 12 Jan 2005 21:45:44 +0100 Message-ID: <41E58C9A.10907@freenet.de> Date: Wed, 12 Jan 2005 21:46:18 +0100 From: Wolf DL4YHF User-Agent: Mozilla Thunderbird 0.9 (Windows/20041103) X-Accept-Language: de-DE, de, en-us, en MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: In-Reply-To: X-Warning: freenet.de is listed at abuse.rfc-ignorant.org X-SPF-Result: relay.thorcom.net: 194.97.50.155 is neither permitted nor denied by domain of freenet.de X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=failed,none Subject: Re: LF: Audio Filters Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com 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-Spam-Filtered: by PlusNet SpamCORE (v3.00) Hi Gary, IMHO, there no great benefit from using an audio filter for QRSS. I tried the "DSP" in an FT897, and also a narrow analog filter (which I use for CW on LF), but couldn't see an improvement on the waterfall screen if the "contrast" and "brightness" controls are properly adjusted. It is more important to have a good noiseblanker in the receiver's frontend . 73, Wolf DL4YHF .