Return-Path: X-Spam-DCC: paranoid 1181; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-0.7 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, RATWARE_GECKO_BUILD autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id t9L9JZaJ004364 for ; Wed, 21 Oct 2015 11:19:36 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZopVR-0007n7-Gm for rs_out_1@blacksheep.org; Wed, 21 Oct 2015 10:16:25 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZopVR-0007my-3w for rsgb_lf_group@blacksheep.org; Wed, 21 Oct 2015 10:16:25 +0100 Received: from smtpout.karoo.kcom.com ([212.50.160.34]) by relay1.thorcom.net with esmtp (Exim 4.86) (envelope-from ) id 1ZopUa-0000Bw-Ky for rsgb_lf_group@blacksheep.org; Wed, 21 Oct 2015 10:16:23 +0100 X-IronPort-AV: E=Sophos;i="5.17,711,1437433200"; d="scan'208";a="77207005" Received: from unknown (HELO [127.0.0.1]) ([109.176.196.66]) by smtpout.karoo.kcom.com with ESMTP; 21 Oct 2015 10:15:16 +0100 Message-ID: <562757A3.2080109@lineone.net> Date: Wed, 21 Oct 2015 10:15:15 +0100 From: LineOne User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:31.0) Gecko/20100101 Thunderbird/31.1.2 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org X-Scan-Signature: 1f795a2ee1ecd56682b47ad11969b3d3 Subject: LF: SSB modulation for WSPR Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 4556 So far the only person to decode my WSPR transmissions is Joe, DF2JP. I made a drive unit for 136kHz to utilise 4 different methods of modulation including quadrature switching for SSB. Having just discovered that a fault caused the I and Q channels to be somewhat different I wondered what the effect would be and why Joe was the only one to decode it? The carrier frequency is never more than 0.8Hz out, time is spot on via GMT (UTC) and the sound card is perfectly accurate so receive decoding is good. Hugh, M0DSZ. (P.S. I have no intention of signing up to Yahoo).