Return-Path: Received: (qmail 5836 invoked from network); 1 Feb 2001 12:43:34 -0000 Received: from unknown (HELO murphys-inbound.servers.plus.net) (212.159.14.225) by extortion.plus.net with SMTP; 1 Feb 2001 12:43:34 -0000 Received: (qmail 2398 invoked from network); 1 Feb 2001 12:46:25 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 1 Feb 2001 12:46:25 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #1) id 14OJ0W-0002tE-00 for rsgb_lf_group-outgoing@blacksheep.org; Thu, 01 Feb 2001 12:38:36 +0000 X-Priority: 3 X-MSMail-Priority: Normal Received: from jaws.cisco.com ([198.135.0.150] helo=cisco.com) by post.thorcom.com with esmtp (Exim 3.16 #1) id 14OJ0U-0002sy-00 for rsgb_lf_group@blacksheep.org; Thu, 01 Feb 2001 12:38:35 +0000 Received: from virgin.net (uxb-dhcp-198-135-1-193.cisco.com [198.135.1.193]) by cisco.com (8.8.8/2.6/Cisco List Logging/8.8.8) with ESMTP id MAA00038 for ; Thu, 1 Feb 2001 12:37:50 GMT X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Message-ID: <3A79588A.BAFE81C4@virgin.net> Date: Thu, 01 Feb 2001 12:37:30 +0000 From: "Stewart Bryant" X-Mailer: Mozilla 4.73 [en]C-CCK-MCD (Win95; U) X-Accept-Language: en MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org Subject: Re: LF: S-meter standard References: <003201c0197e$a4955e40$57d725c3@194.95.193.10.fen.baynet.de><003701c02a05$847f1d20$aa14b28f@w8k3f0> <3A774FE6.CF537646@virgin.net> <005401c08c2b$9b3380a0$1129f7c2@oemcomputer> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: John Rabson wrote: > ----- Original Message ----- > From: M.J.Powell > To: > Sent: Wednesday, January 31, 2001 4:33 PM > Subject: Re: LF: S-meter standard > > > In message <3A774FE6.CF537646@virgin.net>, Stewart Bryant > > writes > > > Why do the manufacturers still bother with S units. Why don't > > > receivers just > > > measure dBuV or dBm at the antenna? > > > > Because that would mean equalising the gain exactly over the whole > > range. Expensive. The WJ1000 does though. > > > The RC411 did. > > 73 de > John Rabson G3PAI Actually in these modern microprocessor days it does not mean equalising the gain, it means adding an S meter correction table to the software, and running the S meter via the CPU rather than directly from the AGC line. 73 Stewart G3YSX