Return-Path: Received: (qmail 21225 invoked from network); 25 Mar 2002 18:48:57 -0000 Content-Transfer-Encoding: 8bit Received: from unknown (HELO warrior.services.quay.plus.net) (212.159.14.227) by excalibur-qfe1-smtp-plusnet.harl.plus.net with SMTP; 25 Mar 2002 18:48:57 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 11296 invoked from network); 25 Mar 2002 18:49:00 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior.services.quay.plus.net with SMTP; 25 Mar 2002 18:49:00 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 16pb0t-00050T-00 for rsgb_lf_group-outgoing@blacksheep.org; Mon, 25 Mar 2002 20:24:19 +0000 Received: from hestia.herts.ac.uk ([147.197.200.9]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 16pb0s-00050O-00 for rsgb_lf_group@blacksheep.org; Mon, 25 Mar 2002 20:24:18 +0000 Received: from gemini ([147.197.200.44] helo=gemini.herts.ac.uk) by hestia.herts.ac.uk with esmtp (Exim 3.22 #1) id 16pZTz-0003WE-00 for rsgb_lf_group@blacksheep.org; Mon, 25 Mar 2002 18:46:15 +0000 Received: from [147.197.232.252] (helo=rsch-15.herts.ac.uk) by gemini.herts.ac.uk with esmtp (Exim 3.33 #1) id 16pZTy-0002vv-00 for rsgb_lf_group@blacksheep.org; Mon, 25 Mar 2002 18:46:14 +0000 Message-ID: <5.1.0.14.0.20020325182324.00b06ae8@gemini.herts.ac.uk> X-Sender: mj9ar@gemini.herts.ac.uk X-Mailer: QUALCOMM Windows Eudora Version 5.1 Date: Mon, 25 Mar 2002 18:41:50 +0000 To: rsgb_lf_group@blacksheep.org From: "James Moritz" Subject: Re: LF: QRSS with RA9MB In-reply-to: <002201c1d428$276cb2e0$05e9fea9@g3aqc> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Dear Alex, LF group, At 18:06 25/03/2002 +0000, G3AQC wrote: >Hi Alex, >I should be very pleased to transmit, for you to attempt QRSS reception... I can also send some QRSS sigs if you like - but first, it would be a good idea to chose a frequency that has low noise at your QTH. Preferred frequencies here are between 135.8 - 135.9 kHz, and 137.6 - 137.8 kHz, but this can be changed to suit your conditions. Also, you wrote: ...Now I have simple LC VFO as master oscillator in my TX. I think that frequency stability is not adequate for QRSS. Is it so? I used a VFO for QRSS transmission at one time - for 3 second dots, it is OK provided you check the frequency every few minutes. But for longer dot periods, a crystal or synthesiser is probably essential. Obviously, the RX must be stable as well. I think you are the first and only LF station from your part of the world, so it would certainly be good to try some tests - good luck! Cheers, Jim Moritz 73 de M0BMU