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Date: Fri, 27 Dec 2013 12:16:47 +0100
From: wolf_dl4yhf <dl4yhf@freenet.de>
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Subject: Re: LF: Sending Opera with SpecLab
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Greetings all,
(and apologies to Markus for juming in so quickly..)

The principle described by Markus is only for transmission.
To take place of the DS option, i.e. for RECEPTION, spectrum lab would 
have to modified to some extend, last not least it would need an 
'automated' method to build the correlation patterns for the DS mode 
itself.
Since Markus has already provided his opera generator (thanks for 
that!), it could be modified into a command-line driven tool (exe or 
dll) which SL could invoke to create the 239-bit message pattern for the 
correlators. I cannot promise too much yet (being busy from too many 
other projects) but maybe  when the new 'super-linear', moderate-power, 
switching mode amplifier is finished I'll have a look at it again.

All the best,
   Wolf  DL4YHF .

Am 27.12.2013 02:00, schrieb Bob Raide:
> Markus;
>  Can this take the place of DS option used with OPERA?
>
> ------------------------------------------------------------------------
> From: markusvester@aol.com
> To: rsgb_lf_group@blacksheep.org; rsgb_lf_group@yahoogroups.co.uk
> Date: Fri, 27 Dec 2013 01:45:14 +0100
> Subject: LF: Sending Opera with SpecLab
>
> Today I finally found a simple solution to send Opera sequences from 
> SpecLab's digimode terminal. The nice thing about this is that you can 
> use all of SpecLab's powerful functions, like samplerate correction, 
> adjustable pulse shaping, or high audio frequencies. This seems very 
> useful, especially in the context of possible future VLF Opera 
> transmissions.
> First you will need to create a text file consisting of the 239 
> bit 1101... sequence for your callsign. This can be generated from the 
> PIC menu in the original Opera software. Or you can use my little code 
> generator tool at 
> http://df6nm.bplaced.net/opera/opera_generator.zip - simply copy 
> opgen.exe from the zip andtype
>  opgen mycallsign >opera.txt
> into a command window.
> In SpecLab, open the digimode terminal and configure it for ASK with 
> no encoding, as shown in the attached "_settings" screenshot. The 
> symbol rate has to be set to the inverse dotlength for the desired 
> Opera speed:
> mode   dotlength    rate
>           (seconds) (sym/s)
> Op-8    1.024s     0.9766
> Op-32   8.192s 0.12207
> Op-4H  65.536s  0.01526
> Shaping time can be selected from hard (0%) to soft (50%) keying. Then 
> enter your desired audio frequency and use "Load TX text" from the 
> file menue to load your opera.txt file. The sequence will appear in 
> the TX window, and the transmission can started by hitting the RX / TX 
> button.
> Best 73,
> Markus (DF6NM)


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    <div class="moz-cite-prefix">Greetings all,<br>
      (and apologies to Markus for juming in so quickly..)<br>
      <br>
      The principle described by Markus is only for transmission. <br>
      To take place of the DS option, i.e. for RECEPTION, spectrum lab
      would have to modified to some extend, last not least it would
      need an 'automated' method to build the correlation patterns for
      the DS mode itself. <br>
      Since Markus has already provided his opera generator (thanks for
      that!), it could be modified into a command-line driven tool (exe
      or dll) which SL could invoke to create the 239-bit message
      pattern for the correlators. I cannot promise too much yet (being
      busy from too many other projects) but maybe&nbsp; when the new
      'super-linear', moderate-power, switching mode amplifier is
      finished I'll have a look at it again.<br>
      <br>
      All the best,<br>
      &nbsp; Wolf&nbsp; DL4YHF .<br>
      <br>
      Am 27.12.2013 02:00, schrieb Bob Raide:<br>
    </div>
    <blockquote cite="mid:BLU180-W3735DAEA6FF8ECFCD60A40ACCD0@phx.gbl"
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      <div dir="ltr">Markus;<br>
        &nbsp;Can this take the place of DS option used with OPERA?&nbsp;<br>
        &nbsp;<br>
        <div>
          <hr id="stopSpelling">From: <a class="moz-txt-link-abbreviated" href="mailto:markusvester@aol.com">markusvester@aol.com</a><br>
          To: <a class="moz-txt-link-abbreviated" href="mailto:rsgb_lf_group@blacksheep.org">rsgb_lf_group@blacksheep.org</a>;
          <a class="moz-txt-link-abbreviated" href="mailto:rsgb_lf_group@yahoogroups.co.uk">rsgb_lf_group@yahoogroups.co.uk</a><br>
          Date: Fri, 27 Dec 2013 01:45:14 +0100<br>
          Subject: LF: Sending Opera with SpecLab<br>
          <br>
          <div><font face="Arial" size="2">Today I finally found a
              simple solution to&nbsp;send Opera sequences from SpecLab's
              digimode terminal. </font><font face="Arial" size="2">The
              nice thing about this is that you can use all of SpecLab's
              powerful functions, like samplerate correction, adjustable
              pulse shaping, or high audio frequencies. This&nbsp;seems very
              useful,&nbsp;especially&nbsp;in the context of&nbsp;possible future VLF
              Opera transmissions.</font></div>
          <div>&nbsp;</div>
          <div><font face="Arial" size="2">First you will need to create
              a&nbsp;text file consisting of the 239 bit&nbsp;1101... sequence for
              your callsign. This can be generated&nbsp;from the PIC menu in
              the original Opera software. Or you can use my&nbsp;little code
              generator tool at </font><font face="Arial" size="2"><a
                moz-do-not-send="true"
                title="http://df6nm.bplaced.net/opera/opera_generator.zip
                STRG + Klicken, um Verkn?pfung zu folgen"
                href="http://df6nm.bplaced.net/opera/opera_generator.zip"
                target="_blank">http://df6nm.bplaced.net/opera/opera_generator.zip</a>&nbsp;-&nbsp;simply
              copy opgen.exe from the zip and</font><font face="Arial"
              size="2"> type</font></div>
          <div><font face="Arial" size="2">&nbsp;opgen mycallsign
              &gt;opera.txt</font></div>
          <div><font face="Arial" size="2">into a command&nbsp;window.</font></div>
          <div>&nbsp;</div>
          <div><font face="Arial" size="2">In SpecLab, open the digimode
              terminal and configure it for ASK with no encoding, as
              shown in the attached "_settings" screenshot. The symbol
              rate has to be set to the&nbsp;inverse dotlength for the
              desired Opera speed:</font></div>
          <div>&nbsp;</div>
          <div><font face="Arial" size="2">mode &nbsp; dotlength&nbsp;&nbsp;&nbsp; rate</font></div>
          <div><font face="Arial" size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (seconds) (sym/s)</font></div>
          <div><font face="Arial" size="2">
              <div><font face="Arial" size="2">Op-8&nbsp;&nbsp;&nbsp;&nbsp;1.024s&nbsp;&nbsp;&nbsp;&nbsp; 0.<font
                    face="Arial" size="2">9766</font>
                  <div><font face="Arial" size="2">Op-32&nbsp;&nbsp;&nbsp;8.192s&nbsp;&nbsp;&nbsp;
                      0.12207</font></div>
                  <font face="Arial" size="2">
                    <div><font face="Arial" size="2">Op-4H&nbsp;&nbsp;65.536s&nbsp;
                        &nbsp;0.01526</font></div>
                    <div>&nbsp;</div>
                    <div>Shaping time&nbsp;can be selected&nbsp;from hard (0%)&nbsp;to
                      soft (50%) keying.&nbsp;Then enter your desired audio
                      frequency and use "Load TX text" from the file
                      menue to load your opera.txt file. The&nbsp;sequence
                      will appear in the TX window, and the
                      transmission&nbsp;can started&nbsp;by hitting the RX / TX
                      button.</div>
                    <div>&nbsp;</div>
                    <div>Best 73,</div>
                    <div>Markus (DF6NM)</div>
                    <div>&nbsp;</div>
                  </font></font></div>
            </font></div>
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