Return-Path: Received: from mtain-mg04.r1000.mx.aol.com (mtain-mg04.r1000.mx.aol.com [172.29.96.204]) by air-de05.mail.aol.com (v128.1) with ESMTP id MAILINDE054-5eb54bbd11551a1; Wed, 07 Apr 2010 19:12:21 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-mg04.r1000.mx.aol.com (Internet Inbound) with ESMTP id 7067B380000AA; Wed, 7 Apr 2010 19:12:19 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NzePA-0000O0-Fj for rs_out_1@blacksheep.org; Thu, 08 Apr 2010 00:11:28 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NzePA-0000Nr-43 for rsgb_lf_group@blacksheep.org; Thu, 08 Apr 2010 00:11:28 +0100 Received: from smtp816.mail.ukl.yahoo.com ([217.12.12.245]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1NzeP8-0007U5-2n for rsgb_lf_group@blacksheep.org; Thu, 08 Apr 2010 00:11:28 +0100 Received: (qmail 94988 invoked from network); 7 Apr 2010 23:11:20 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=btopenworld.com; h=DKIM-Signature:Received:X-Yahoo-SMTP:X-YMail-OSG:X-Yahoo-Newman-Property:Message-ID:From:To:References:In-Reply-To:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE; b=g4wWg68121KozzWeOlGVwuXKego//7OQNp1v4lP1VBQruGzhRtngKv6cYZgOTUFjAruL9bbMPoWvp3z5mN0XJj4sGG8VTkQ9da+v2+rBcdY0hOZVlGJApj8PTACAkxm5qB6vWMvsxGJ6GSHIt8/Px1pXYvI/HJ3Aczv3pVeowMI= ; DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=btopenworld.com; s=s1024; t=1270681880; bh=4Iwr2KTCuvQmI9eXDPBWWdl0SuX9SnSCC3pAS8ZN+Eo=; h=Received:X-Yahoo-SMTP:X-YMail-OSG:X-Yahoo-Newman-Property:Message-ID:From:To:References:In-Reply-To:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE; b=EsWVoQmqwj5zC5Kc9zZ/EQbgBtnQzuQnfEAQUiiRK2SNe7m/7Cw7gvt/THFWvYna4kGm2kP9VT9kv0mmpRqU0qNTCmk3FOZezXtrOB3PB/vgbLlf3MOWOEN01y2BwObRFADBNd6Wt5hOkgGFvnlJQVMnEnK42UVWfPpWweUDZG4= Received: from JimPC (james.moritz@86.180.204.156 with login) by smtp816.mail.ukl.yahoo.com with SMTP; 07 Apr 2010 23:11:20 +0000 GMT X-Yahoo-SMTP: Cxhli3eswBD1ozmtAojhjrja86kWx0Qm9tycD5QR1DKWrOLgjJcXkw-- X-YMail-OSG: XSMzwOwVM1nExmNtiMJuwVUe.8MY9hokP2s8XGQr6dKOuwIAs.uv3kLd5E.XPknJOJTF.4gecj9TRaAYce8bGiqzVzONfSAjtvr5Pl1BVVKX4I9JzguyMXhwt3pgS_YJn6bX6ka8fT28igzgX1mWirFwTj_tcXpsdNT1zurBLM5Xm38SQ3x9ZcN9XGzsy9qCsHTbiuHK6Fxfs_2U_pa_pwrtzbuuQy3ldACB_hwmAcH.BKySuiFQ0_oXGr8tV76GvvXxK7X2QdvftENJ5xBl7KjrgfCM.mOG X-Yahoo-Newman-Property: ymail-3 Message-ID: From: "James Moritz" To: References: <613358.97685.qm@web28104.mail.ukl.yahoo.com> In-Reply-To: <613358.97685.qm@web28104.mail.ukl.yahoo.com> Date: Thu, 8 Apr 2010 00:11:20 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18005 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18005 DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,UNPARSEABLE_RELAY=0.001 Subject: Re: LF: WSPR without an SSB TRX ? Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.1 required=5.0 tests=MISSING_OUTLOOK_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-aol-global-disposition: G X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d254.2 ; domain : btopenworld.com DKIM : pass x-aol-sid: 3039ac1d60cc4bbd115379f4 X-AOL-IP: 193.82.116.20 Dear Pete, Chris, LF Group, ----- Original Message ----- From: "M0FMT" ...>If you mix the 1500hz tone up to 500 kc/s conventionally don't you get +/- 1500hz tone as the product. i.e. upper and lower sideband? Yes... ...>Thus the reason I suggested a Tayloe (for the want of a better description) detector in reverse which resolves the unwanted sideband issue. I dont think a straight forward product mixer will do. That is essentially what G4JNT's simple phasing upconverter design ( http://www.g4jnt.com/LFUpconv.pdf ) mentioned previously does. ...>A simple phase modulator using two 8meg xtals by G3ZJO is shown on a web page the URL in my last mail. Well more of a frequency modulator, but this generates a 1500Hz modulated audio output from a PIC code generator. I think G3XIZ already has the 1500Hz modulated audio available from his existing PC, he just needs a way to get it onto 500kHz. Cheers, Jim Moritz 73 de M0BMU