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 00937380000A4; Mon, 16 Jul 2012 21:45:10 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SqurL-0004PY-Ka for rs_out_1@blacksheep.org; Tue, 17 Jul 2012 00:37:47 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SqurL-0004PP-2O for rsgb_lf_group@blacksheep.org; Tue, 17 Jul 2012 00:37:47 +0100 Received: from smtpout3.wanadoo.co.uk ([80.12.242.59] helo=smtpout.wanadoo.co.uk) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1SqurI-0007sa-Lb for rsgb_lf_group@blacksheep.org; Tue, 17 Jul 2012 00:37:45 +0100 Received: from AGB ([2.26.30.14]) by mwinf5d44 with ME id bBdj1j0050JGYii03Bdj57; Tue, 17 Jul 2012 01:37:44 +0200 Message-ID: From: "Graham" To: References: <7E7DFBB4D102A04DB5ADC88D66628A4A016538@ICTS-S-MBX5.luna.kuleuven.be> <2A0EF872376D40A584E0EB27CC0AA272@White> <4C9DA8DC927B4DF6876E358D37DE2EA4@AGB> In-Reply-To: <4C9DA8DC927B4DF6876E358D37DE2EA4@AGB> Date: Tue, 17 Jul 2012 00:37:43 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 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. 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Content preview: Eddie = G3ZJO From: Graham Sent: Monday, July 16, 2012 11:39 PM To: rsgb_lf_group@blacksheep.org Subject: Re: LF: opera coding demistified And of course , there is a PIC code generator in the windows software , that can be used , Andy g4jnt has a post about using it for driving a standalone beacon..he did run op34 / 64 on 136 as a beacon early in the year ..The only thing that is missing is the internet beacon alert , clock accuracy of 0.2% is needed to achieve the lowest s/n decodes , Eddie G3GZO and I think Pete M0FMT are using standalone keying devices [...] 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 [80.12.242.59 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 7a5eab5982daca5912e6e97333848fe5 Subject: Re: LF: opera coding demistified Content-Type: multipart/alternative; boundary="----=_NextPart_000_013C_01CD63B4.60DDBCA0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.6 required=5.0 tests=HTML_40_50,HTML_MESSAGE, 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: 0:2:497217504:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d4ad45004c3a5331b X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_013C_01CD63B4.60DDBCA0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Eddie =3D G3ZJO=20 From: Graham=20 Sent: Monday, July 16, 2012 11:39 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: opera coding demistified And of course , there is a PIC code generator in the windows = software , that can be used , Andy g4jnt has a post about using = it for driving a standalone beacon..he did run op34 / 64 on 136 = as a beacon early in the year ..The only thing that is missing = is the internet beacon alert , clock accuracy of 0.2% is needed = to achieve the lowest s/n decodes , Eddie G3GZO and I think Pete = M0FMT are using standalone keying devices=20 73 -G. clock times for modes :-=20 Opera 05: 0.128 s Opera 1: 0.256 s Opera 2: 0.512 s Opera 4: 1.024 s Opera 8: 2.048 s Opera 32: 8.192 s From: Markus Vester=20 Sent: Monday, July 16, 2012 11:18 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: opera coding demistified Stefan Schaefer wrote=20 > 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=20 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 =3D 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=20 http://df6nm.bplaced.net/opera/opera_generator.zip (24 kB) Best 73, Markus (DF6NM) From: Rik Strobbe=20 Sent: Friday, February 17, 2012 11:48 AM To: rsgb_lf_group@blacksheep.org=20 Subject: LF: opera coding demistified PE1NNZ seems to have demistified the opera coding, those interested can = read the attached file. 73, Rik ON7YD - OR7T=20 ------=_NextPart_000_013C_01CD63B4.60DDBCA0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Eddie =3D  G3ZJO

From: Graham
Sent: Monday, July 16, 2012 11:39 PM
Subject: Re: LF: opera coding demistified

And  of course , there  is a  PIC  code =20 generator  in the  windows   software ,=20 that  can be  used , Andy  g4jnt  has = a =20 post  about  using  it  for  driving  = a =20 standalone  beacon..he did  run  op34 / 64  on = 136  as=20 a  beacon  early in the  year  ..The only = thing =20 that  is  missing  is the  internet  = beacon =20 alert ,  clock  accuracy  of  0.2%  is=20 needed  to  achieve the  lowest s/n  decodes , = Eddie =20 G3GZO  and  I think  Pete  M0FMT  are  = using =20 standalone   keying   devices
 
73 -G.
 
clock times  for   modes  :-
 
Opera    05: 0.128 = s
Opera     =20 1: 0.256 s
Opera      2: 0.512=20 s
Opera      4: 1.024=20 s
Opera      8: 2.048 = s
Opera   =20 32: 8.192 s
 

From: Markus Vester
Sent: Monday, July 16, 2012 11:18 PM
To: rsgb_lf_group@blacksheep.org= =20
Subject: Re: LF: opera coding demistified

Stefan Schaefer wrote
> G.., i have done it. Downloaded ... to my = LF PC.=20 Still can't belive it...
... well, I haven't ;-) Out of curiosity, = I have=20 instead implemented Guido's excellent guide on Opera=20 encoding 
http://rn3aus.narod.ru= /opera_protocol.pdf
in a little Basic program, = which outputs the=20 110... keying sequence for any given callsign.
 
And it works! For = a quick on=20 air test, I decided to use SpecLab's test signal generator, modulated by = an=20 arbitrary waveform which can be loaded from a text = file. To fit=20 to the required data format, I edited the sequence by=20 zero-padding from 239 to 256 symbols, then replacing every "1" = by two=20 lines of "32767", and every "0" by two lines of = "0", giving=20 512 samples total. For "Op4" speed, the AM = modulator=20 period was set to 0.256*4*256 =3D 262.144 seconds. Audio output was used = to key=20 my TX on 478.63 kHz. I sent for strings on Saturday night = 21:30=20 to 21:47, and within a few minutes, pskreporter.de showed spots = from DF2JP,=20 G8HUH, ON6EO and DD7PC.
 
In case you would = also like to=20 send Opera without "his master's software", or associate obscure = received=20 sequences with possible candidates, the little program and = sourcecode=20 is at
http://df6nm.= bplaced.net/opera/opera_generator.zip (24=20 kB)
 
Best 73,
Markus (DF6NM)
From: = Rik Strobbe
Sent: Friday, February 17, 2012 11:48=20 AM
To: rsgb_lf_group@blacksheep.org=20
Subject: LF: opera coding=20 demistified

PE1NNZ seems to have demistified the = opera coding,=20 those interested can read the attached file.

73, Rik  ON7YD = - OR7T=20
 
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