Return-Path: Received: (qmail 59076 invoked from network); 27 Nov 2004 22:11:25 -0000 Received: from unknown (HELO ptb-spamcore01.plus.net) (192.168.71.1) by ptb-mailstore01.plus.net with SMTP; 27 Nov 2004 22:11:25 -0000 Received: from mailnull by ptb-spamcore01.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1CYB5V-000ES5-Ik for dave@picks.force9.co.uk; Sat, 27 Nov 2004 22:30:42 +0000 Received: from [192.168.67.1] (helo=ptb-mxcore01.plus.net) by ptb-spamcore01.plus.net with esmtp (Exim 4.32; FreeBSD) id 1CYB5V-000ES2-E2 for dave@picks.force9.co.uk; Sat, 27 Nov 2004 22:30:41 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore01.plus.net with esmtp (Exim 4.30; FreeBSD) id 1CYAmq-0009Xj-EQ for dave@picks.force9.co.uk; Sat, 27 Nov 2004 22:11:24 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1CYAmc-00011d-Is for rs_out_1@blacksheep.org; Sat, 27 Nov 2004 22:11:10 +0000 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1CYAmc-00011U-7Q for rsgb_lf_group@blacksheep.org; Sat, 27 Nov 2004 22:11:10 +0000 Received: from imo-d21.mx.aol.com ([205.188.144.207]) by relay.thorcom.net with esmtp (Exim 4.41) id 1CYAmU-0008Te-2h for rsgb_lf_group@blacksheep.org; Sat, 27 Nov 2004 22:11:10 +0000 Received: from DL4YHF@aol.com by imo-d21.mx.aol.com (mail_out_v37_r3.8.) id l.12c.51dafb0c (16086) for ; Sat, 27 Nov 2004 17:10:48 -0500 (EST) Received: from aol.com (mow-d15.webmail.aol.com [205.188.139.131]) by air-id10.mx.aol.com (v103.7) with ESMTP id MAILINID103-3ed641a8fb6834f; Sat, 27 Nov 2004 17:10:48 -0500 Date: Sat, 27 Nov 2004 17:10:48 -0500 From: DL4YHF@aol.com To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 Message-ID: <7336EF12.578D6094.00041B63@aol.com> X-Mailer: Atlas Mailer 2.0 X-AOL-IP: 80.144.68.23 X-AOL-Language: german X-SPF-Result: relay.thorcom.net: domain of aol.com designates 205.188.144.207 as permitted sender X-Spam-Score: 2.5 (++) X-Spam-Report: autolearn=no,NO_REAL_NAME=0.285,RCVD_IN_BL_SPAMCOP_NET=2.25 Subject: LF: (B)PSK test results on saturday 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=0.3 required=5.0 tests=NO_REAL_NAME 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-Spam-Filtered: by PlusNet SpamCORE (v3.00) Hello group, Some "on air"-tests performed saturday evening showed no big difference in the performance of PSK08 with amplitude shaping and "slow phase" variation. Thanks to DF6NM's grabber (with the zoomed range switched to 136500 Hz temporarily) I could not observe a broader signal when switching between the two PSK shaping methods. Also interesting: Shortly after starting, DL3ZID called me (also in PSK08), and Eberhard was perfect copy (as long as no local QRM carriers wiped him out) with 5 mW ERP from over 100 km's distance, though the PSK signal was almost invisible on the QRSS3-spectrogram. So the good old waterfall display may be not very helpful to detect the presence of such a signal - unless a kind of "weak pilot tone" if added to the signal, which would allow to adjust the RX frequency manually (by moving the L.O. frequency with a mouseclick into the waterfall, etc). During the QSO with DL3ZID, the AFC'ed RX frequency was pulled away several times by "wandering carriers" so I finally turned it off (no problem, since DL3ZID's TX frequency was stable enough). Locking the "soft" L.O. to a selectable Loran line may be another option to circumvent these problems.. but that's another story. Regards, Wolf DL4YHF.