Return-Path: Received: (qmail 51409 invoked from network); 19 Mar 2004 17:28:42 -0000 Received: from unknown (HELO ptb-mxscan01.plus.net) (212.159.14.235) by ptb-mailstore02.plus.net with SMTP; 19 Mar 2004 17:28:42 -0000 Received: (qmail 60976 invoked from network); 19 Mar 2004 17:28:42 -0000 X-Filtered-by: Plusnet (hmail v1.01) X-Spam-detection-level: 11 Received: from ptb-mxcore01.plus.net (212.159.14.215) by ptb-mxscan01.plus.net with SMTP; 19 Mar 2004 17:28:39 -0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore01.plus.net with esmtp (Exim 4.30; FreeBSD) id 1B4NnT-000FiK-A8 for dave@picks.force9.co.uk; Fri, 19 Mar 2004 17:28:39 +0000 X-Fake-Domain: majordom Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1B4Nmc-0008WH-HD for rs_out_1@blacksheep.org; Fri, 19 Mar 2004 17:27:46 +0000 Received: from [213.232.95.59] (helo=relay.salmark.net) by post.thorcom.com with esmtp (Exim 4.14) id 1B4Nmb-0008W8-Cb for rsgb_lf_group@blacksheep.org; Fri, 19 Mar 2004 17:27:45 +0000 Received: from imo-m14.mx.aol.com ([64.12.138.204]) by relay.salmark.net with esmtp (Exim 4.24) id 1B4VhU-0004YC-Ch for rsgb_lf_group@blacksheep.org; Sat, 20 Mar 2004 01:55:00 +0000 X-Fake-Domain: WarmSpgs@aol.com Received: from WarmSpgs@aol.com by imo-m14.mx.aol.com (mail_out_v37_r1.2.) id l.12f.3d2c2189 (4410) for ; Fri, 19 Mar 2004 12:27:04 -0500 (EST) From: WarmSpgs@aol.com Message-ID: <12f.3d2c2189.2d8c8768@aol.com> Date: Fri, 19 Mar 2004 12:27:04 EST To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 X-Mailer: AOL 4.0 for Windows 95 sub 120 X-Spam-Score: 0.9 (/) X-Spam-Report: 0.3 NO_REAL_NAME From: does not include a real name 0.6 DATE_IN_PAST_06_12 Date: is 6 to 12 hours before Received: date Subject: Re: LF: QRSS Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Status: No, hits=0.3 required=5.0 tests=NO_REAL_NAME 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-PN-SPAMFiltered: yes X-Spam-Rating: 6 In a message dated 3/19/04 10:55:19 AM Eastern Standard Time, john.currie@ns.sympatico.ca writes: > Hi Walter, I wonder if the shf stations used modulated cw? Looks like > they used Gunn oscillators, which could have drifted a GHZ doring the > transmission At that frequency, they were using an incandescent lamp... :-) Actually, the transmitter block diagram at the Web page cited in the original post shows a really sophisticated PLL system to stabilize the oscillator to the accuracy of the 5MHz source. John