Return-Path: Received: (qmail 48581 invoked from network); 8 Apr 2004 23:02:41 -0000 Received: from unknown (HELO ptb-mxscan03.plus.net) (212.159.14.237) by ptb-mailstore01.plus.net with SMTP; 8 Apr 2004 23:02:41 -0000 Received: (qmail 28694 invoked from network); 8 Apr 2004 23:02:41 -0000 X-Filtered-by: Plusnet (hmail v1.01) X-Spam-detection-level: 11 Received: from ptb-mxcore03.plus.net (212.159.14.217) by ptb-mxscan03.plus.net with SMTP; 8 Apr 2004 23:02:40 -0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore03.plus.net with esmtp (Exim) id 1BBiXf-0007Kq-V7 for dave@picks.force9.co.uk; Fri, 09 Apr 2004 00:02:40 +0100 X-Fake-Domain: majordom Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1BBiWU-0007TN-1G for rs_out_1@blacksheep.org; Fri, 09 Apr 2004 00:01:26 +0100 Received: from [213.232.95.59] (helo=relay.salmark.net) by post.thorcom.com with esmtp (Exim 4.14) id 1BBiWT-0007TE-GS for rsgb_lf_group@blacksheep.org; Fri, 09 Apr 2004 00:01:25 +0100 Received: from zinc.btinternet.com ([194.73.73.148]) by relay.salmark.net with esmtp (Exim 4.24) id 1BBiWO-0004uJ-Uo for rsgb_lf_group@blacksheep.org; Fri, 09 Apr 2004 00:01:20 +0100 Received: from [213.122.214.162] (helo=Main) by zinc.btinternet.com with smtp (Exim 3.22 #25) id 1BBiWN-0002pH-00 for rsgb_lf_group@blacksheep.org; Fri, 09 Apr 2004 00:01:20 +0100 X-Bad-Message-ID: no DNS (Main) Message-ID: <001601c41dbd$7271c6a0$6507a8c0@Main> From: "Alan Melia" To: rsgb_lf_group@blacksheep.org References: <000701c41a32$35326a80$6507a8c0@Main> <000301c41db5$02a32970$6e5037d2@mcalevey> Date: Fri, 9 Apr 2004 00:01:34 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4522.1200 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4522.1200 X-Spam-Score: 0.1 (/) X-Spam-Report: RCVD_IN_SORBS=0.1 Subject: LF: Re: DCF39 Content-Type: text/plain; charset=iso-8859-1; 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=0.0 required=5.0 tests=none 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: 2 Hi Mike, It could be, DCF39 is a 24/7 signal, and the spreading looks like that Laurence was reporting in Anchorage, and is due to the "randon" return of the carrier phase after data bursts ( Markus DF6NM has explained in previous posts) Possibly also some spreading effect due to the keying. It will be very difficult to get a solid ID although I am not aware of anything else on that channel. It has been received in Anchorage, Ghana, Puerto Rico, Mexico. At the dot speed you are using (120sec ??) you will not be able to see the data bursts These are FSK and with a shift of about 280Hz I think...but I would have to check on that. It would be interesting to see at what the fastest dot speed you could see the signal would be. The other check is to try to determine (geoclock ?? or better a Great Circle clock map) whether there was darkness between you and Magdeburg during that period. It may be a polar path. If it is DCF39, I would think dawn at your end and Magdeburg should correlate fairly well with the reception times. Very interesting please do let us know what you find. This might be the furthest confirmed reception....I believe a report was made some years ago (VK or ZL??), I am not sure whether it could be confirmed or stays as a "possible" Cheers de Alan G3NYK alan.melia@btinternet.com ----- Original Message ----- From: "McAlevey" To: Sent: 08 April 2004 23:00 Subject: LF: DCF39 > I observed this signal centred on 138.83kHz for 4 hours last night. Is it > possibly DCF39? > > Mike ZL4OL >