Return-Path: Received: (qmail 26755 invoked from network); 27 Jul 2002 00:30:03 -0000 Received: from warrior.services.quay.plus.net (212.159.14.227) by mailstore with SMTP; 27 Jul 2002 00:30:03 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 18172 invoked from network); 27 Jul 2002 00:30:03 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from post.thorcom.com (193.82.116.70) by warrior.services.quay.plus.net with SMTP; 27 Jul 2002 00:30:03 -0000 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 17YFOd-0002dD-00 for rsgb_lf_group-outgoing@blacksheep.org; Sat, 27 Jul 2002 01:25:23 +0100 Received: from imo-r02.mx.aol.com ([152.163.225.98]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 17YFOc-0002d8-00 for rsgb_lf_group@blacksheep.org; Sat, 27 Jul 2002 01:25:22 +0100 Received: from DL4YHF@aol.com by imo-r02.mx.aol.com (mail_out_v32.21.) id l.10e.14bd5290 (4459) for ; Fri, 26 Jul 2002 20:24:46 -0400 (EDT) From: DL4YHF@aol.com Message-ID: <10e.14bd5290.2a73424e@aol.com> Date: Fri, 26 Jul 2002 20:24:46 EDT Subject: LF: Jason test signals from M0BMU To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 Content-Type: text/html; charset=windows-1252 X-Mailer: AOL 6.0 for Windows XP DE sub 50 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Content-transfer-encoding: 8bit Hello Jim and group,

successfully decoded  the Jason signals from M0BMU on friday night. The 400mw ERP signal was audible, but frequently interrupted from strong static crashes. Interestingly the waterfall display on Alberto's Jason screen was not much affected by them (no white horizontal lines) so I guess there is some smart pulse noise filter at work.

The difference between the native and the KK7KA decoder was only marginal this time. Sometimes Stewart's algorithm even decided to erase letters which were already printed properly on the screen (happend two times in about 40 letters, so no real problem).

Signal-to-noise ratio with Jims 40mW-transmission was about 9dB (normalized to 1 Hz-RX bandwidth).

A screenshot is available, but unfortunately no saved WAVe-file.

Regards,
 Wolf DL4YHF.

P.S: Late friday evening and early saturday morning, we had a nice tropo opening on 144 MHz from DL into G, GW, GM and even EI. A high-pressure area is on its way, so I guess the propagation will last a bit longer. Anyone on this group interested in a CW crossband contact 2.2km <-> 2m wavelength ?