Return-Path: X-Spam-DCC: paranoid 1290; 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 u07JvJWt014424 for ; Thu, 7 Jan 2016 20:57:19 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1aHGbc-00070N-6w for rs_out_1@blacksheep.org; Thu, 07 Jan 2016 19:52:20 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1aHGbZ-00070E-GK for rsgb_lf_group@blacksheep.org; Thu, 07 Jan 2016 19:52:17 +0000 Received: from mout2.freenet.de ([195.4.92.92]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.86) (envelope-from ) id 1aHGaZ-0000qq-J0 for rsgb_lf_group@blacksheep.org; Thu, 07 Jan 2016 19:52:16 +0000 Received: from [195.4.92.142] (helo=mjail2.freenet.de) by mout2.freenet.de with esmtpa (ID dl4yhf@freenet.de) (port 25) (Exim 4.85 #1) id 1aHGaK-0004gr-L8 for rsgb_lf_group@blacksheep.org; Thu, 07 Jan 2016 20:51:00 +0100 Received: from localhost ([::1]:32798 helo=mjail2.freenet.de) by mjail2.freenet.de with esmtpa (ID dl4yhf@freenet.de) (Exim 4.85 #1) id 1aHGaK-0005Tm-H7 for rsgb_lf_group@blacksheep.org; Thu, 07 Jan 2016 20:51:00 +0100 Received: from mx5.freenet.de ([195.4.92.15]:56780) by mjail2.freenet.de with esmtpa (ID dl4yhf@freenet.de) (Exim 4.85 #1) id 1aHGXs-0000vZ-Lb for rsgb_lf_group@blacksheep.org; Thu, 07 Jan 2016 20:48:28 +0100 Received: from x5d823654.dyn.telefonica.de ([93.130.54.84]:60411 helo=[192.168.178.27]) by mx5.freenet.de with esmtpsa (ID dl4yhf@freenet.de) (TLSv1.2:DHE-RSA-AES128-SHA:128) (port 587) (Exim 4.85 #1) id 1aHGXs-0001LJ-DH for rsgb_lf_group@blacksheep.org; Thu, 07 Jan 2016 20:48:28 +0100 To: rsgb_lf_group@blacksheep.org References: <568D9257.8070306@abelian.org> From: =?UTF-8?Q?Wolfgang_B=c3=bcscher?= Message-ID: <568EC107.1090601@freenet.de> Date: Thu, 7 Jan 2016 20:48:23 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.5.0 MIME-Version: 1.0 In-Reply-To: <568D9257.8070306@abelian.org> X-Originated-At: 93.130.54.84!60411 X-Scan-Signature: 0a4643e586472c13187d293ec5d096c2 Subject: Re: LF: MF Ebnaut transmissions from Riccardo IW4DXW Content-Type: text/plain; charset=windows-1252; 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: RO X-Status: X-Keywords: X-UID: 6183 Hi Paul and all, > I don't have > anything available to receive coherently at MF so cannot > join in the fun. Perhaps someone can recommend a suitable > SDR that I can clock from a 10Mhz GPSDO? > < By chance, I am currently playing with a PIC16F1783-based GPSDO with additional outputs for an I/Q downconverter, and two analog 12-bit ADC inputs which allow the 10 MHz OCXO to supply also the 'IF' sampling rate. This is in an early development stage, and in the end a dsPIC30F3013 (with a similar homebrew friendly 28-pin DIL package) may turn out the better choice. In any case, the output from PIC to PC (via serial port adapter) will require the interface to use over 115 kBit/second, but the protocol will be simple or even compatible with my older, PIC12 based design. I will publish the sources (written in plain old "C", not PIC assembler) on my website hopefully soon. These dsPICs are quite antiquated compared with Cortex-M devices, but dead cheap, and require almost no external circuitry to get a deeply embedded system running. All the best, Wolf .