Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-da05.r1000.mx.aol.com (Internet Inbound) with ESMTP id 25329380000E4; Fri, 21 Sep 2012 04:37:50 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1TEyiv-0004Ae-8O for rs_out_1@blacksheep.org; Fri, 21 Sep 2012 09:36:33 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1TEyiu-0004AV-O9 for rsgb_lf_group@blacksheep.org; Fri, 21 Sep 2012 09:36:32 +0100 Received: from out1.ip06ir2.opaltelecom.net ([62.24.128.242]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1TEyis-0000vL-K6 for rsgb_lf_group@blacksheep.org; Fri, 21 Sep 2012 09:36:31 +0100 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: ApMBAMImXFACZMpR/2dsb2JhbAANOME3AQEBAQNJQAsJCwQJFg8JAwIBAgFFEwgBAa1Ak3SLHBuGCwOVZJMJ X-IronPort-AV: E=Sophos;i="4.80,460,1344207600"; d="scan'208,217";a="551273061" Received: from host-2-100-202-81.as13285.net (HELO [192.168.2.2]) ([2.100.202.81]) by out1.ip06ir2.opaltelecom.net with ESMTP; 21 Sep 2012 09:36:29 +0100 Message-ID: <505C270C.8010501@psk31.plus.com> Date: Fri, 21 Sep 2012 09:36:28 +0100 From: g3zjo User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:14.0) Gecko/20120713 Thunderbird/14.0 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <7E517D8BC1054A3388F253523A03931E@White> In-Reply-To: <7E517D8BC1054A3388F253523A03931E@White> X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Well done Markus I wondered how you were going to do the de-code, the TX bit is easy isn't it.. I am surprised you didn't get timing errors on the replay. Here I find cumulative errors with normal 2 min WSPR and MP3 recordings, so much so I abandoned the idea, despite successes reported by some Italian stations for use in a beacon. This method tried was to use several 2min WSPR recordings with pauses between them played as a loop, different record / playback devices introduce different timing errors. Do you remember wanting minimum Wow and Flutter on your music recordings, the new music download generation doesn't care.:-) [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [62.24.128.242 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 16a6530e4735ccb856cf9bc7c6cb9773 Subject: Re: LF: WSPR-8 Test Content-Type: multipart/alternative; boundary="------------080807050709010804060703" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,HTML_MESSAGE, HTML_TAG_EXISTS_TBODY 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-sid: 3039ac1d404d505c275e038f X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. --------------080807050709010804060703 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Well done Markus I wondered how you were going to do the de-code, the TX bit is easy isn't it.. I am surprised you didn't get timing errors on the replay. Here I find cumulative errors with normal 2 min WSPR and MP3 recordings, so much so I abandoned the idea, despite successes reported by some Italian stations for use in a beacon. This method tried was to use several 2min WSPR recordings with pauses between them played as a loop, different record / playback devices introduce different timing errors. Do you remember wanting minimum Wow and Flutter on your music recordings, the new music download generation doesn't care.:-) 73 Eddie G3ZJO On 21/09/2012 01:07, Markus Vester wrote: > First decodes using 8-minute WSPR: > 2012-09-21 00:00 > > DK7FC > > 0.137508 > > +7 > > 0 > > JN49ik > > 1 > > DF6NM > > JN59nj > > 175 > > 91 > 2012-09-20 23:52 > > DK7FC > > 0.137508 > > +3 > > 0 > > JN49ik > > 1 > > DF6NM > > JN59nj > > 175 > > 91 > > Between 23:36 and 23:43:20, Stefan was transmitting 8-times slow WSPR > with low power on 136172 Hz. This was recorded here to an IQ file > using SndInput from DL4YHF, and replayed 8x fast during the next > 2-minute, slot starting 23:44. In the process the audio was frequency > shifted from 670 to 2000 Hz, and added to the normal audio data for > WSPR. Thus with the 4x acceleration, Stefan's transmission appeared 8 > instead of 2 Hz above center. > This is all still a bit improvised, but the concept seems to work. > Best 73, > Markus (DF6NM) > > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2012.0.2221 / Virus Database: 2441/5282 - Release Date: 09/20/12 > --------------080807050709010804060703 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit
Well done Markus

I wondered how you were going to do the de-code, the TX bit is easy isn't it..

I am surprised you didn't get timing errors on the replay. Here I find cumulative errors with normal 2 min WSPR and MP3 recordings, so much so I abandoned the idea, despite successes reported by some Italian stations for use in a beacon.
This method tried was to use several 2min WSPR recordings with pauses between them played as a loop, different record / playback devices introduce different timing errors. Do you remember wanting minimum Wow and Flutter on your music recordings, the new music download generation doesn't care. :-)

73

Eddie G3ZJO


On 21/09/2012 01:07, Markus Vester wrote:
First decodes using 8-minute WSPR:
 
2012-09-21 00:00 
 DK7FC 
 0.137508 
 +7 
 0 
 JN49ik 
 1 
 DF6NM 
 JN59nj 
 175 
 91 
 2012-09-20 23:52 
 DK7FC 
 0.137508 
 +3 
 0 
 JN49ik 
 1 
 DF6NM 
 JN59nj 
 175 
 91
 
Between 23:36 and 23:43:20, Stefan was transmitting 8-times slow WSPR with low power on 136172 Hz. This was recorded here to an IQ file using SndInput from DL4YHF, and replayed 8x fast during the next 2-minute, slot starting 23:44. In the process the audio was frequency shifted from 670 to 2000 Hz, and added to the normal audio data for WSPR.  Thus with the 4x acceleration, Stefan's transmission appeared 8 instead of 2 Hz above center.
 
This is all still a bit improvised, but the concept seems to work.
 
Best 73,
Markus (DF6NM)
 

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2012.0.2221 / Virus Database: 2441/5282 - Release Date: 09/20/12


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