Return-Path: Received: (qmail 5353 invoked from network); 1 Jan 2002 21:20:43 -0000 Received: from unknown (HELO murphys-inbound.services.quay.plus.net) (212.159.14.225) by excalibur.plus.net with SMTP; 1 Jan 2002 21:20:43 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 1754 invoked from network); 1 Jan 2002 21:20:42 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys.services.quay.plus.net with SMTP; 1 Jan 2002 21:20:42 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 16LWJM-0003TK-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 01 Jan 2002 21:19:04 +0000 Received: from tungsten.btinternet.com ([194.73.73.81]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 16LWJL-0003TF-00 for rsgb_lf_group@blacksheep.org; Tue, 01 Jan 2002 21:19:03 +0000 Received: from host213-122-62-77.btinternet.com ([213.122.62.77]) by tungsten.btinternet.com with smtp (Exim 3.22 #8) id 16LWIa-0006I4-00 for rsgb_lf_group@blacksheep.org; Tue, 01 Jan 2002 21:18:16 +0000 From: "Nick" To: rsgb_lf_group@blacksheep.org Subject: Re: LF: Re: 7fsk g4jnt Date: Tue, 01 Jan 2002 21:13:46 +0000 Message-ID: References: <000d01c18ba8$952b6420$969c01d4@g4jnt> In-reply-to: <000d01c18ba8$952b6420$969c01d4@g4jnt> X-Mailer: Forte Agent 1.8/32.548 MIME-Version: 1.0 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: On Sun, 23 Dec 2001 11:54:19 -0000, you wrote: > I know the reason for adopting LSB on the 1.8 / 3.5 / 7Mhz bands was >to avoid clashing with shared users of the bands but..... Historical note, I think you will find that upper sideband above 9MHz and lover below it came about from generating an upper sideband signal at 9MHz and then either mixing up or down from there, I imagine it was convenient to limit the tuning range of your oscillator and pick off the sum or difference as appropriate. Nick