Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dl06.r1000.mx.aol.com (Internet Inbound) with ESMTP id DD7F6380000AD; Mon, 16 Jul 2012 21:45:16 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SqtuA-00048c-MQ for rs_out_1@blacksheep.org; Mon, 16 Jul 2012 23:36:38 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SqtuA-00048T-00 for rsgb_lf_group@blacksheep.org; Mon, 16 Jul 2012 23:36:38 +0100 Received: from relay.uni-heidelberg.de ([129.206.100.212]) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1Sqtu7-0007hC-Gz for rsgb_lf_group@blacksheep.org; Mon, 16 Jul 2012 23:36:36 +0100 Received: from freitag.iup.uni-heidelberg.de (freitag.iup.uni-heidelberg.de [129.206.29.204]) by relay.uni-heidelberg.de (8.14.1/8.14.1) with ESMTP id q6GMaYNb003374 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 17 Jul 2012 00:36:34 +0200 Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de [129.206.22.206]) by freitag.iup.uni-heidelberg.de (8.12.11.20060308/8.11.2) with ESMTP id q6GMaYcJ021025 for ; Tue, 17 Jul 2012 00:36:34 +0200 Message-ID: <500496ED.2090501@iup.uni-heidelberg.de> Date: Tue, 17 Jul 2012 00:34:21 +0200 From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <7E7DFBB4D102A04DB5ADC88D66628A4A016538@ICTS-S-MBX5.luna.kuleuven.be> <2A0EF872376D40A584E0EB27CC0AA272@White> In-Reply-To: <2A0EF872376D40A584E0EB27CC0AA272@White> X-Spam-Score: -0.7 (/) 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: Hello Markus, That is perfect, really a good idea. I can imagine how it looks in the arbitrary window where is have often drawn wild curves like a child and then listen to it :-) I will try to use that, without the opera program. A real alternative without additional hardware (!) [...] Content analysis details: (-0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [129.206.100.212 listed in list.dnswl.org] -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: efdc09b6b31095aa2dc5c6d2552910d5 Subject: Re: LF: opera coding demistified Content-Type: multipart/alternative; boundary="------------040109050303060405060800" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_40_50,HTML_MESSAGE 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: 0:2:482668608:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d4ad45004c3ac33d6 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. --------------040109050303060405060800 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Hello Markus, That is perfect, really a good idea. I can imagine how it looks in the arbitrary window where is have often drawn wild curves like a child and then listen to it :-) I will try to use that, without the opera program. A real alternative without additional hardware (!) The same could be possible for FSK codes like WSPR, if you feed the generated signal through a bandpass filter to generate and filter different frequecies, right? Thanks for the program and efforts! 73, Stefan/DK7FC > Stefan Schaefer wrote > > G.., i have done it. Downloaded ... to my LF PC. Still can't belive > it... > ... well, I haven't ;-) Out of curiosity, I have instead > implemented Guido's excellent guide on Opera encoding > http://rn3aus.narod.ru/opera_protocol.pdf > in a little Basic program, which outputs the 110... keying sequence > for any given callsign. > And it works! For a quick on air test, I decided to use SpecLab's test > signal generator, modulated by an arbitrary waveform which can be > loaded from a text file. To fit to the required data format, I edited > the sequence by zero-padding from 239 to 256 symbols, then replacing > every "1" by two lines of "32767", and every "0" by two lines of "0", > giving 512 samples total. For "Op4" speed, the AM modulator period was > set to 0.256*4*256 = 262.144 seconds. Audio output was used to key > my TX on 478.63 kHz. I sent for strings on Saturday night 21:30 to > 21:47, and within a few minutes, pskreporter.de showed spots from > DF2JP, G8HUH, ON6EO and DD7PC. > In case you would also like to send Opera without "his master's > software", or associate obscure received sequences with > possible candidates, the little program and sourcecode is at > http://df6nm.bplaced.net/opera/opera_generator.zip (24 kB) > Best 73, > Markus (DF6NM) > *From:* Rik Strobbe > *Sent:* Friday, February 17, 2012 11:48 AM > *To:* rsgb_lf_group@blacksheep.org > *Subject:* LF: opera coding demistified > > PE1NNZ seems to have demistified the opera coding, those interested > can read the attached file. > > 73, Rik ON7YD - OR7T --------------040109050303060405060800 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hello Markus,

That is perfect, really a good idea. I can imagine how it looks in the arbitrary window where is have often drawn wild curves like a child and then listen to it :-)
I will try to use that, without the opera program. A real alternative without additional hardware (!)

The same could be possible for FSK codes like WSPR, if you feed the generated signal through a bandpass filter to generate and filter different frequecies, right?

Thanks for the program and efforts!

73, Stefan/DK7FC

Stefan Schaefer wrote
> G.., i have done it. Downloaded ... to my LF PC. Still can't belive it...
... well, I haven't ;-) Out of curiosity, I have instead implemented Guido's excellent guide on Opera encoding 
in a little Basic program, which outputs the 110... keying sequence for any given callsign.
 
And it works! For a quick on air test, I decided to use SpecLab's test signal generator, modulated by an arbitrary waveform which can be loaded from a text file. To fit to the required data format, I edited the sequence by zero-padding from 239 to 256 symbols, then replacing every "1" by two lines of "32767", and every "0" by two lines of "0", giving 512 samples total. For "Op4" speed, the AM modulator period was set to 0.256*4*256 = 262.144 seconds. Audio output was used to key my TX on 478.63 kHz. I sent for strings on Saturday night 21:30 to 21:47, and within a few minutes, pskreporter.de showed spots from DF2JP, G8HUH, ON6EO and DD7PC.
 
In case you would also like to send Opera without "his master's software", or associate obscure received sequences with possible candidates, the little program and sourcecode is at
 
Best 73,
Markus (DF6NM)
Sent: Friday, February 17, 2012 11:48 AM
Subject: LF: opera coding demistified

PE1NNZ seems to have demistified the opera coding, those interested can read the attached file.

73, Rik  ON7YD - OR7T
 
--------------040109050303060405060800--