Return-Path: Received: (qmail 26972 invoked from network); 22 Jul 1999 06:02:40 +0100 Received: from magnus.plus.net.uk (HELO magnus.force9.net) (195.166.128.27) by guiness.force9.net with SMTP; 22 Jul 1999 06:02:40 +0100 Received: (qmail 11619 invoked from network); 22 Jul 1999 05:04:56 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by magnus.plus.net.uk with SMTP; 22 Jul 1999 05:04:56 -0000 X-Priority: 3 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 117Ati-000887-00 for rsgb_lf_group-outgoing@blacksheep.org; Thu, 22 Jul 1999 05:55:58 +0100 X-MSMail-Priority: Normal Received: from ah-img-3.compuserve.com ([149.174.217.157] helo=hpamgaac.compuserve.com) by post.thorcom.com with esmtp (Exim 3.02 #1) id 117Ath-000882-00 for rsgb_lf_group@blacksheep.org; Thu, 22 Jul 1999 05:55:57 +0100 Received: (from mailgate@localhost) by hpamgaac.compuserve.com (8.8.8/8.8.8/HP-1.5) id AAA07056 for rsgb_lf_group@blacksheep.org; Thu, 22 Jul 1999 00:55:31 -0400 (EDT) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Date: Thu, 22 Jul 1999 00:54:23 -0400 From: "'Geri' Kinzel, DK8KW" Subject: LF: dBm to dB, uV and S-units To: rsgb_lf_group@blacksheep.org Message-ID: <199907220055_MC2-7DE9-228F@compuserve.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Disposition: inline Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org Sender: Hello Lowfers, some of us use selective level meters to measure the signal strength, some have receivers with S-Units where S9 equals 50 uV, others are calibrated to 100 uV (and a lot of the S-meters are not calibrated at all). To ge able to get some comparable results, I have posted a table on my homepage that allows direct conversion between those units. It can either be reached directly through http://home.t-online.de/home/dk8kw/dbm.htm or through my main index-page http://www.dk8kw.home.pages.de So the -33 dB (where 0 dB equals 0.775 Volt across 75 Ohms) at that I can receive DCF39 equals to approximately S9 + 44 dB. Best 73 Geri, DK8KW (W1KW)