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Date: Wed, 01 Aug 2012 23:05:22 +0200
From: Piotr Mlynarski <sq7mpj@toya.net.pl>
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Content preview: W dniu 2012-07-17 00:18, Markus Vester pisze: > 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) > * Hello Markus, LF i also have not
installed Opera software but inspired by your little Basic program i decided
( of course, just for fun) to continue with another "homemade" Opera version.
I have used your program which outputs a callsign in a form of ascii 010....
as an input for my little Fortran program which puts RTS ( or DTR) line of
a serial comm port into high or low state with a specific [Opera n = 1,2,4,8,32]
duration in accordance with 1's or 0's of the encoded callsign. This, in
turn, keys on/off the transceiver. Therefore, i have avoided the use of SL/
modulator etc... it was too complicated to me at the first sight.. :) ..
and still is! [...]
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Subject: Re: LF: opera coding demistified
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W dniu 2012-07-17 00:18, Markus Vester pisze:
> 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)
>
*
Hello Markus, LF
i also have not installed Opera software but inspired by your little
Basic program i decided ( of course, just for fun) to continue with
another "homemade" Opera version.
I have used your program which outputs a callsign in a form of ascii
010.... as an input for my little Fortran program which puts RTS ( or
DTR) line of a serial comm port
into high or low state with a specific [Opera n = 1,2,4,8,32] duration
in accordance with 1's or 0's of the encoded callsign. This, in turn,
keys on/off the transceiver.
Therefore, i have avoided the use of SL/ modulator etc... it was too
complicated to me at the first sight.. :) .. and still is!
I put my trx into 20 meters band and today afternoon i've sent few
instances of the homemade Opera - got positive decodes frm
RA1AHQ,EA4SWL,F6AVP,IW2OHP
so definitely it works! Well, very likely , that in the forthcoming
looong winter evenings i will try to reinvent the wheel once again
and following the excellent description of Opera encoding by Guido,
PE1NNZ i will write the rest of the ftn code just to have an
'autonomic' piece of software.
Once again, i know we are doing so many unnnecessary things but.. well,
it was a fun...
73, Piotr, sq7mpj
qth: Lodz /jo91rs/
p.s. question: As i am not familiar with the Opera 'original' software
and, in fact, with the pskreporter facility
how the reporting/monitoring stns got my locator correctly ? is
there any 'database' built in ?
*
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W dniu 2012-07-17 00:18, Markus Vester pisze:
<blockquote cite="mid:2A0EF872376D40A584E0EB27CC0AA272@White"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
<meta content="MSHTML 6.00.6000.17110" name="GENERATOR">
<font face="Arial">
</font>
<div style="font: 10pt Tahoma;">
<div><font face="Arial"><font face="Arial">Stefan Schaefer wrote
</font></font></div>
<div><font face="Arial"><font face="Arial">> G.., i have done
it. Downloaded ... to my LF PC. Still can't belive it...<br>
</font></font></div>
</div>
<div style="font: 10pt Tahoma;">
<div><font face="Arial">... well, I haven't ;-) Out of
curiosity, I have instead implemented Guido's excellent
guide on Opera encoding </font></div>
<div><font face="Arial"><a moz-do-not-send="true"
title="http://rn3aus.narod.ru/opera_protocol.pdf
STRG + Klicken, um Verknüpfung zu folgen"
href="http://rn3aus.narod.ru/opera_protocol.pdf">http://rn3aus.narod.ru/opera_protocol.pdf</a></font></div>
<div><font face="Arial">in a little Basic program, which outputs
the 110... keying sequence for any given callsign.</font></div>
</div>
<div> </div>
<div><font size="2"><font face="Arial"><font>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 "</font><font>32767",
and every "0" by two lines of "0", giving 512 samples
total. </font><font>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.</font></font></font></div>
<div> </div>
<div><font size="2"><font face="Arial"><font>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 </font></font></font></div>
<div><font face="Arial" size="2"><a moz-do-not-send="true"
title="http://df6nm.bplaced.net/opera/opera_generator.zip
STRG + Klicken, um Verknüpfung zu folgen"
href="http://df6nm.bplaced.net/opera/opera_generator.zip">http://df6nm.bplaced.net/opera/opera_generator.zip</a> (24
kB)</font></div>
<div> </div>
<div><font face="Arial" size="2">Best 73,</font></div>
<div style="font: 10pt Tahoma;">
<div><font face="Arial">Markus (DF6NM)<br>
</font></div>
<br>
</div>
</blockquote>
<font face="Arial"><b><br>
Hello Markus, LF<br>
i also have not installed Opera software but inspired by your
little Basic program i decided ( of course, just for fun) to
continue with another "homemade" Opera version.<br>
I have used your program which outputs a callsign in a form of
ascii 010.... as an input for my little Fortran program which
puts RTS ( or DTR) line of a serial comm port<br>
into high or low state with a specific [Opera n = 1,2,4,8,32]
duration in accordance with 1's or 0's of the encoded callsign.
This, in turn, keys on/off the transceiver. <br>
Therefore, i have avoided the use of SL/ modulator etc... it
was too complicated to me at the first sight.. :) .. and
still is!<br>
<br>
I put my trx into 20 meters band and today afternoon i've sent
few instances of the homemade Opera - got positive decodes frm
RA1AHQ,EA4SWL,F6AVP,IW2OHP<br>
so definitely it works! Well, very likely , that in the
forthcoming looong winter evenings i will try to reinvent the
wheel once again <br>
and following the excellent description of Opera encoding by
Guido, PE1NNZ i will write the rest of the ftn code just to
have an 'autonomic' piece of software.<br>
Once again, i know we are doing so many unnnecessary things
but.. well, it was a fun...<br>
<br>
73, Piotr, sq7mpj<br>
<br>
qth: Lodz /jo91rs/<br>
<br>
p.s. question: As i am not familiar with the Opera 'original'
software and, in fact, with the pskreporter facility <br>
how the reporting/monitoring stns got my locator
correctly ? is there any 'database' built in ?<br>
<br>
<br>
</b></font>
</body>
</html>
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