Return-Path: Received: (qmail 3443 invoked from network); 12 Jan 2004 14:11:36 -0000 Received: from unknown (HELO ptb-mxscan03.plus.net) (212.159.14.237) by ptb-mailstore01.plus.net with SMTP; 12 Jan 2004 14:11:36 -0000 Received: (qmail 92809 invoked from network); 12 Jan 2004 14:11:36 -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; 12 Jan 2004 14:11:33 -0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore03.plus.net with esmtp (Exim) id 1Ag2mz-000Ndb-5X for dave@picks.force9.co.uk; Mon, 12 Jan 2004 14:11:33 +0000 X-Fake-Domain: majordom Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Ag2mg-0000QL-J6 for rs_out@blacksheep.org; Mon, 12 Jan 2004 14:11:14 +0000 Received: from [194.73.73.93] (helo=rhenium.btinternet.com) by post.thorcom.com with esmtp (Exim 4.14) id 1Ag2mf-0000QC-VL for rsgb_lf_group@blacksheep.org; Mon, 12 Jan 2004 14:11:14 +0000 Received: from [81.135.39.101] (helo=Main) by rhenium.btinternet.com with smtp (Exim 3.22 #25) id 1Ag2me-0002Fi-00 for rsgb_lf_group@blacksheep.org; Mon, 12 Jan 2004 14:11:13 +0000 X-Bad-Message-ID: no DNS (Main) Message-ID: <000b01c3d915$ecdaaac0$6507a8c0@Main> From: "Alan Melia" To: rsgb_lf_group@blacksheep.org References: <007a01c3d870$20dd0bc0$0500a8c0@charter.net> <304614133.20040112111754@dx.ru> Date: Mon, 12 Jan 2004 14:10:56 -0000 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 V6.00.2800.1106 Subject: LF: Re: Re: First WOLF QSO! Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on post.thorcom.com X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 X-SA-Exim-Scanned: Yes Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-PN-SPAMFiltered: yes X-Spam-Rating: 2 Hi Ed, as John says, I do not recall any two-way WOLF qsos. I think only Jim M0BMU, Andy G4JNT have transmit it, that I can remember. It is basically an "off-line" decoding system, where with weak signals one may have to process the recorded file several times. I think a lot of us were waiting and maybe hoping for a "instant", real-time version. Then Alberto came along with Jason as a keyboard decoded mode, and WOLF did not seem to progress. (Stewart provided some adaptive code to improve the decoder in Alberto's system) I also believe that WOLF is transmit as BPSK which generally requires a linear PA. (Jason is an FSK mode so can use non-linear PAs) Generally for high power station one requires a DDS exciter with a non linear PA, to prouce "soft" phase transitions. It is possible with some hardware that Jim developed to produce soft phase changes which would be required on a high power station to control bandwidth. I dont think the bandwidth is such an issue with FCC Part 15, 1 watt output, stations. Details from memory (liable to suffer dropped bits these days ...:-)) Look at http://www.scgroup.com/ham/wolf.html for the full story. Well done on repairing the aerial at Machta and we look forward to hearing your signals again. Cheers de Alan G3NYK alan.melia@btinternet.com ----- Original Message ----- From: "Ed Lesnichy" To: Sent: 12 January 2004 11:17 Subject: LF: Re: First WOLF QSO! > John, Dex and LF-enthusiasts! > > My congratulations to John W1TAG and Dex W4DEX! > It is remarkable result at such very small ERP! > I believe what to RX a very weak signal at 1w DC input max (not 1w > ERP!!), and antenna less than 15m on distance abt 1080km it is very > difficult in any modes...probably in WOLF is especial...and at the daytime... > > On what greatest distance it was possible to RX in long QRSS such small > ERP at night? > > US's Lowfers have saved wide experience in reception of very weak > signals on LF - when already they will appear on 136 or 160-190kHz for > longway 2-way QSO with high-grade ERP? > > The first(?) reception of Europe signal in North America on WOLF: > John W1TAG RX Jim M0BMU at March 9, 2001 at QRB abt 5307km > > Whether who has made 2-way QSO on WOLF in Europe? > > When (date) Stewart KK7KA has made WOLF mode? > > 73! Ed RU6LA ed@dx.ru http://136.73.ru > >