Return-Path: Received: (qmail 24559 invoked from network); 5 Jul 2001 20:14:40 -0000 Received: from unknown (HELO murphys-inbound.servers.plus.net) (212.159.14.225) by excalibur.plus.net with SMTP; 5 Jul 2001 20:14:40 -0000 Received: (qmail 21845 invoked from network); 5 Jul 2001 20:13:30 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 5 Jul 2001 20:13:30 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 15IFNZ-0000mD-00 for rsgb_lf_group-outgoing@blacksheep.org; Thu, 05 Jul 2001 21:05:37 +0100 Received: from mta6-rme.xtra.co.nz ([203.96.92.19]) by post.thorcom.com with esmtp (Exim 3.16 #2) id 15IFNX-0000m8-00 for rsgb_lf_group@blacksheep.org; Thu, 05 Jul 2001 21:05:36 +0100 Received: from xtr743187 ([202.27.181.44]) by mta6-rme.xtra.co.nz with SMTP id <20010705200441.LUMP2773532.mta6-rme.xtra.co.nz@xtr743187> for ; Fri, 6 Jul 2001 08:04:41 +1200 Message-ID: <005201c1058e$3dcfad80$8bb21bca@xtr743187> From: "Vernall" To: rsgb_lf_group@blacksheep.org References: <013101c104f6$de84de00$2eb51bca@rvernall> <3.0.1.16.20010705120858.218fe35c@mail.cc.kuleuven.ac.be> Subject: LF: Tests this Saturday Date: Fri, 6 Jul 2001 07:56:24 +1200 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2919.6600 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: To all on the RSGB reflector, As there is now wider interest in the tests, following the ZL to VE7 result last weekend, this information is (somewhat optimistically) being posted to the RSGB reflector. I would also like to wish Mike ZL4OL all the best in bettering the result this coming weekend (he is further south of ZL6QH, so the path to VE7 is some 598 km further). 73, Bob ZL2CA ZL6QH and ZL4OL QRSS TESTING 7 JULY ZL6QH and ZL4OL are conducting further slow rate digital mode test transmissions this coming Saturday, on the frequency of 184.3999 kHz. ZL6QH will transmit from 0500 - 1230 UTC, and ZL4OL 1045 - 1215 UTC (targeting sunrise time in VE7). The transmission format for ZL6QH is dual frequency keying, with 0.4 Hz shift, and "dot length" of 120 seconds. The identifier is Q, sent as "dah dah dit dah", with "dah" as 184.4001 kHz and "dit" as 184.3997 kHz. Dual frequency keying has equal length elements for "dit" and "dah", and only a brief transition between elements, to save time with very slow keying, so each Q in the ten minute repetitious sequence of QQQQQ. has the following format: Dah of 184.4001 kHz for 2 minutes, then a brief pause Dah of 184.4001 kHz for 2 minutes, then a brief pause Dit of 184.3997 kHz for 2 minutes, then a brief pause Dah of 184.4001 kHz for 2 minutes A silent period of 2 minutes Repeated for the whole session The transmission format for ZL4OL is single frequency keying, with 184.3999 kHz carrier, and 120 second "dot length". This is deliberately arranged to be "inbetween" the dual frequency keying of ZL6QH, and allows one correctly tuned Argo screen to be able to capture either signal. The identifier is O, sent as "dah dah dah", so each O in the 15 minute repetitious sequence of OOOOO. has the following format: Dah of 184.3999 kHz for 2 minutes Silent for 2 minutes Dah of 184.3999 kHz for 2 minutes Silent for 2 minutes Dah of 184.3999 kHz for 2 minutes Silent for 5 minutes Repeated for the whole session