Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mp01.r1000.mx.aol.com (Internet Inbound) with ESMTP id EE6183800029F; Wed, 21 Mar 2012 11:33:42 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SANED-0001vN-1K for rs_out_1@blacksheep.org; Wed, 21 Mar 2012 15:13:33 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SANEC-0001vE-KT for rsgb_lf_group@blacksheep.org; Wed, 21 Mar 2012 15:13:32 +0000 Received: from mk-filter-3-a-1.mail.tiscali.co.uk ([212.74.100.54] helo=mk-filter-3-a-1.mail.uk.tiscali.com) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1SANEA-0005K0-Ea for rsgb_lf_group@blacksheep.org; Wed, 21 Mar 2012 15:13:32 +0000 X-Trace: 739602985/mk-filter-3.mail.uk.tiscali.com/B2C/$b2c-THROTTLED-DYNAMIC/b2c-CUSTOMER-DYNAMIC-IP/88.104.32.186/None/g4wgt@tiscali.co.uk X-SBRS: None X-RemoteIP: 88.104.32.186 X-IP-MAIL-FROM: g4wgt@tiscali.co.uk X-SMTP-AUTH: X-Originating-Country: GB/UNITED KINGDOM X-MUA: Microsoft Windows Mail 6.0.6002.18197Produced By Microsoft MimeOLE V6.1.7601.17609 X-IP-BHB: Once X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AmoFACTvaU9YaCC6/2dsb2JhbAA8CLUHgXOBCIIJAQEFCCoBBR4uAQQFAwMRBAEBCiUzBhYIBhMICYd9B6ohjWmKXoMBgj9jBJs6ikyCZw X-IronPort-AV: E=Sophos;i="4.73,624,1325462400"; d="scan'208";a="739602985" Received: from 88-104-32-186.dynamic.dsl.as9105.com (HELO GaryPC) ([88.104.32.186]) by smtp.tiscali.co.uk with SMTP; 21 Mar 2012 15:13:13 +0000 Message-ID: From: "Gary G4WGT" To: References: <4F68FEDF.4030201@iup.uni-heidelberg.de> <366E681C214B4F78AB071DAD28D34386@GaryPC> <4F69D110.6020007@iup.uni-heidelberg.de> In-Reply-To: <4F69D110.6020007@iup.uni-heidelberg.de> Date: Wed, 21 Mar 2012 15:13:02 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18197 X-MimeOLE: Produced By Microsoft MimeOLE V6.1.7601.17609 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Re: 137 kHz transmit IQ converter schematic Content-Type: text/plain; format=flowed; charset="ISO-8859-15"; reply-type=response Content-Transfer-Encoding: 8bit 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-SCORE: 0:2:516801344:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1dc1454f69f4d62965 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Thanks Stefan, OK now. Looks good. Gary - G4WGT ----- Original Message ----- From: "Stefan Schäfer" To: Sent: Wednesday, March 21, 2012 1:01 PM Subject: Re: LF: Re: 137 kHz transmit IQ converter schematic Oops, thanks Gary. Try again. I did a minor change in the schematic and updated the file, i thought with the same name. Now a new link and test: http://dl.dropbox.com/u/19882028/LF/schematics/TX%20IQ%20converter.png Should work now. 73, Stefan Am 21.03.2012 13:37, schrieb Gary G4WGT: > Stefan, > > The link did not work for me. > > 73, Gary - G4WGT. > > > ----- Original Message ----- From: "Stefan Schäfer" > > To: > Sent: Tuesday, March 20, 2012 10:04 PM > Subject: LF: 137 kHz transmit IQ converter schematic > > >> LF, >> >> I took the time to draw the circuit of my transmit IQ converter in the >> new program i have. >> This is the circuit i use to generate my transmit signal to drive the >> exciter of my PA. The 137 kHz signal is directly generated in this >> circuit. It is mixed with 125 kHz internally. >> The basic idea is taken from Andy/G4JNT, tnx agn. The circuit is however >> modified for an input frequency of 10.7...12.8 kHz which can be generated >> by the soundcard. The 125 kHz generator can be locked to a reference >> signal, into a PLL which isn't shown here (separate circuit). Anyway the >> circuit is a stand alone device. The input signal level may be 0 (=100%) >> down to -30 dB full scale of the soundcard without a change of the output >> signal (including a safety factor of > 10 dB). >> >> http://dl.dropbox.com/u/19882028/LF/schematics/TX%20IQ%20converter.png >> >> Comments welcome. >> >> 73, Stefan/DK7FC >> >> >