Return-Path: X-Spam-DCC: paranoid 1170; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.4 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id tABEtapE018666 for ; Wed, 11 Nov 2015 15:55:36 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZwWl2-00070K-S7 for rs_out_1@blacksheep.org; Wed, 11 Nov 2015 14:52:20 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZwWl2-00070B-KH for rsgb_lf_group@blacksheep.org; Wed, 11 Nov 2015 14:52:20 +0000 Received: from know-smtprelay-omc-8.server.virginmedia.net ([80.0.253.72]) by relay1.thorcom.net with esmtp (Exim 4.86) (envelope-from ) id 1ZwWjy-0001Iu-7b for rsgb_lf_group@blacksheep.org; Wed, 11 Nov 2015 14:52:19 +0000 Received: from [192.168.1.6] ([86.31.33.210]) by know-smtprelay-8-imp with bizsmtp id gEqz1r00G4Y1DuW01EqzZu; Wed, 11 Nov 2015 14:50:59 +0000 X-Originating-IP: [86.31.33.210] X-Spam: 0 X-Authority: v=2.1 cv=UKUgZ3ry c=1 sm=1 tr=0 a=jn/JOh/JfiX48zzdjRLp/g==:117 a=jn/JOh/JfiX48zzdjRLp/g==:17 a=NLZqzBF-AAAA:8 a=kj9zAlcOel0A:10 a=oCcaPWc0AAAA:8 a=niKcFmdFAiqVkx1z2CYA:9 a=CjuIK1q_8ugA:10 From: "Mike Dennison" To: rsgb_lf_group@blacksheep.org Date: Wed, 11 Nov 2015 14:50:58 -0000 MIME-Version: 1.0 Message-ID: <564355D2.23956.1180C23@mike.dennison.ntlworld.com> In-reply-to: <826003947.20151111141353@chriswilson.tv> References: <1886523092.20151110195707@chriswilson.tv>, , <826003947.20151111141353@chriswilson.tv> X-mailer: Pegasus Mail for Windows (4.41) Content-description: Mail message body X-Scan-Signature: 4b5b5ebe37a4c4f430f59bc35c1947b0 Subject: Re: Re[2]: LF: LF receiver Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 4970 Chris, You should not need to use the 's' meter on HDSDR when taking relative readings. The (wideband) waterfall display is already in decibels - just place the cursor at the position you want to measure. If that doesn't work, go to Options/Visualisation/Informations on Mouse position. For noise readings I would increase the averaging (Avg) function to perhaps 16 or more to get a flattish line. As a guide, I find that DCF38 is typically 63dB above daytime noise. You are a little further away from DCF, so you should get a slightly lower figure. Mike, G3XDV ========== > I'll cal the HDSDR S meter with my sig gen, and get some meaningful > figures, but it may be over the weekend, got a busy week on here, > thanks Jim. > > > And also, by how many dB does the nighttime background level exceed > > the midday level? > > > Jim, K8RZ > > > > > > > > -- > Best regards, > Chris 2E0ILY mailto:chris@chriswilson.tv > > > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2016.0.7163 / Virus Database: 4457/10980 - Release Date: > 11/11/15 >