Return-Path: Received: (qmail 19323 invoked from network); 16 Jun 2000 11:47:10 -0000 Received: from unknown (HELO magnet.force9.net) (195.166.128.26) by excalibur.plus.net with SMTP; 16 Jun 2000 11:47:10 -0000 Received: (qmail 8798 invoked from network); 16 Jun 2000 11:44:54 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by magnet.plus.net.uk with SMTP; 16 Jun 2000 11:44:54 -0000 Content-Transfer-Encoding: 8bit Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 132uSv-0000wg-00 for rsgb_lf_group-outgoing@blacksheep.org; Fri, 16 Jun 2000 12:39:13 +0100 Received: from bob.dera.gov.uk ([192.5.29.90]) by post.thorcom.com with esmtp (Exim 3.02 #1) id 132uSu-0000wb-00 for rsgb_lf_group@blacksheep.org; Fri, 16 Jun 2000 12:39:12 +0100 X-Priority: 3 X-MSMail-Priority: Normal Received: by bob.dera.gov.uk; (8.8.8/1.3/10May95) id MAA04835; Fri, 16 Jun 2000 12:43:23 +0100 (BST) Received: (qmail 14970 invoked from network); 16 Jun 2000 12:32:01 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from gauntlet.mail.dera.gov.uk (172.16.9.10) by baton.dera.gov.uk with SMTP; 16 Jun 2000 12:32:01 -0000 Received: by gauntlet.mail.dera.gov.uk; id MAA08032; Fri, 16 Jun 2000 12:31:05 GMT Received: from unknown(10.71.64.31) by gauntlet.mail.dera.gov.uk via smap (3.2) id xma007672; Fri, 16 Jun 00 12:29:33 GMT Received: from frn-gold-1.dera.gov.uk (unverified) by mailguard.dera.gov.uk (Content Technologies SMTPRS 4.1.5) with ESMTP id for ; Fri, 16 Jun 2000 11:26:05 +0100 Received: by frn-gold-1.dera.gov.uk with Internet Mail Service (5.0.1460.8) id ; Fri, 16 Jun 2000 11:18:42 +0100 Message-ID: <3617AC3245C2D1118A840000F805359C01AB8CC0@pdw-mercury-1.dera.gov.uk> From: "Talbot Andrew" To: "'LF Group'" Subject: LF: The secret is out Date: Fri, 16 Jun 2000 11:18:39 +0100 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.0.1460.8) Content-Type: text/plain; charset=iso-8859-1; format=flowed Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Now that the 'mystery signal' of last week has been identified and decoded by a number of people, I'll be transmitting Low Speed Sequential Multi Tone Hellschreiber again this weekend on 137.6kHz, this time with bandwidths of 20Hz and 2.5Hz. Time duration per pixel will be scaled in line with the frequency deviation in proportion to the tests last weekend, so around 0.3s / pixel for the 20 Hz version and 2.5s for the 2.5Hz version. These correspond to 19 seconds and 2.67 minutes per character respectively. Power will be in the 50 - 100 Watt region to the antenna, giving 5 - 10mW (or probably less) ERP. If anyone would like these parameters varied let me know on the other EMail account G4JNT@ARRL.ORG or via the reflector and I hope to be able to accomodate this. You can also try phoning on 01489 787424 but expect to get an answering machine as I'll be in the garden most of the day building a conservatory and getting irradiated by the RF fields from overhead ! Unfortunately, Dave and Mike, LSB is not an currently an option, so for now get a mirror / scroll vertically / practise reading back to front. I could alter the software in the future for this mode though, or even transmit USB and LSB simultaneously, one above the other. Presumably that becomes ISB. Three other fonts are available, a simple 5x7 font similar to the original Hellschreiber one, though reported by G3LDO to be not as good as the 8x8 I was using; and larger 8x14 and 8x16 fonts which probably have nothing to offer - on local strong signal copy anyway. Andy G4JNT -- The Information contained in this E-Mail and any subsequent correspondence is private and is intended solely for the intended recipient(s). For those other than the recipient any disclosure, copying, distribution, or any action taken or omitted to be taken in reliance on such information is prohibited and may be unlawful.