Return-Path: Received: from rly-md08.mx.aol.com (rly-md08.mail.aol.com [172.20.29.146]) by air-md10.mail.aol.com (v126.13) with ESMTP id MAILINMD104-91a4b224d6812a; Fri, 11 Dec 2009 08:47:33 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-md08.mx.aol.com (v125.7) with ESMTP id MAILRELAYINMD082-91a4b224d6812a; Fri, 11 Dec 2009 08:47:22 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NJ5pK-0007WD-LF for rs_out_1@blacksheep.org; Fri, 11 Dec 2009 13:46:34 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NJ5pK-0007W2-5K for rsgb_lf_group@blacksheep.org; Fri, 11 Dec 2009 13:46:34 +0000 Received: from pne-smtpout1-sn2.hy.skanova.net ([81.228.8.83]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NJ5pI-0000Cm-1i for rsgb_lf_group@blacksheep.org; Fri, 11 Dec 2009 13:46:34 +0000 Received: from [127.0.0.1] (81.235.167.68) by pne-smtpout1-sn2.hy.skanova.net (7.3.140.3) (authenticated as u33233109) id 4A7285AE00F003E2 for rsgb_lf_group@blacksheep.org; Fri, 11 Dec 2009 14:46:26 +0100 Message-ID: <4B224D31.5070109@telia.com> Date: Fri, 11 Dec 2009 14:46:25 +0100 From: "Johan H. Bodin" User-Agent: Thunderbird 2.0.0.23 (Windows/20090812) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <38A51B74B884D74083D7950AD0DD85E828AC15@File-Server-HST.hst.e-technik.tu-darmstadt.de> In-Reply-To: <38A51B74B884D74083D7950AD0DD85E828AC15@File-Server-HST.hst.e-technik.tu-darmstadt.de> X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: AW: LF: "Gain" between qrss3 and qrss10? Content-Type: text/plain; charset=ISO-8859-1 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=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-IP: 193.82.116.20 X-Mailer: Unknown (No Version) Stefan, yes, I meant the BW of each Argo pixel. Unless there is QRM strong enough to cause overload, or intermodulation in badly designed audio circuits, there is no need to use a narrow filter in the radio. Argo works equally well with a 2..3kHz wide SSB setting on the radio. For example, if Argo is set to QRSS3, the resolution bandwidth (actually the effective receiver BW) is about 0.3Hz (!), no matter which filter you have selected in the radio. Argo in QRSS3 mode can be thought of as 256 parallel CW receivers operating simultaneously, each receiver having a 0.3Hz CW filter and the tuning difference is 0.3Hz btween adjacent receivers :-) 73 Johan SM6LKM Stefan Sch=E4fer wrote: > Thanks Johan for the qualified answer! > With the receiver bandwidth, do you mean the bandwidth of e.g. the argo= programm or of the real receiver, say the ic706? > I use a K2 with a bandwidth of 50Hz (not very sharp edges), which is rel= atively norrow compared to the most standard CW filters in standard HF-TRX= s. Since I can=B4t reduce it even more and the others as well, it would be= no advantage to reduce the speed. So I think you mean the bandwidth of e.= g. argo? Right? > Tnx!=20 > Stefan/DK7FC =20