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Date: Sun, 29 Dec 2013 13:31:55 +0100
From: wolf_dl4yhf <dl4yhf@freenet.de>
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Subject: Re: LF: VLF exciter / signal generation in Spectrum Lab
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Hello Markus, Stefan, and the group,


Am 29.12.2013 12:42, schrieb Markus Vester:
> One channel sends a continuous uninterrupted 17.94 kHz tone to the 
> divider, the other channel conveys modulated Opera at an arbitrary 
> frequency to a VOX rectifier. 

Indeed, this option is now selectable in SL by selecting 'Auxiliary 
output: unmodulated coherent carrier' on the digimode configuration 
screen. Details at

http://www.qsl.net/dl4yhf/speclab/digiterm.htm#adv_settings

I only checked it with ASK (amplitude shift keying) yet but it should 
work with PSK too. Would be an interesting experiment to send 
Opera-encoded bitstreams as binary PSK... :o) if we already had an 
optimized decoder for it.

The problem with very long commands (to send blocks of data through the 
digimode terminal), as noted by Stefan, has now been fixed. The string 
of "zeroes and ones" can be up to 1023 characters long now.

V2.79 b9 can be downloaded from
  http://dl4yhf.ssl7.com/speclab/install_speclab.zip

Please keep a copy of your 'working' version because not all of the new 
functions in SL have been properly tested yet, and there may be a couple 
of bugs lurking in less frequently used subroutines.

73,
   Wolf .


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    <div class="moz-cite-prefix">Hello Markus, Stefan, and the group,<br>
      <br>
      <br>
      Am 29.12.2013 12:42, schrieb Markus Vester:<br>
    </div>
    <blockquote cite="mid:80BAE827E26041D293D7836651E4595A@White"
      type="cite">
      <meta content="text/html; charset=ISO-8859-1"
        http-equiv="Content-Type">
      <meta name="GENERATOR" content="MSHTML 8.00.6001.23543">
    </blockquote>
    <blockquote cite="mid:80BAE827E26041D293D7836651E4595A@White"
      type="cite"><font face="Arial" size="2">One channel&nbsp;sends a
        continuous uninterrupted 17.94 kHz tone to the divider, the
        other channel conveys modulated Opera&nbsp;at an arbitrary
        frequency&nbsp;to a&nbsp;VOX rectifier.</font>
    </blockquote>
    <br>
    Indeed, this option is now selectable in SL by selecting 'Auxiliary
    output: unmodulated coherent carrier' on the digimode configuration
    screen. Details at<br>
    <br>
    <a class="moz-txt-link-freetext" href="http://www.qsl.net/dl4yhf/speclab/digiterm.htm#adv_settings">http://www.qsl.net/dl4yhf/speclab/digiterm.htm#adv_settings</a><br>
    <br>
    I only checked it with ASK (amplitude shift keying) yet but it
    should work with PSK too. Would be an interesting experiment to send
    Opera-encoded bitstreams as binary PSK... :o) if we already had an
    optimized decoder for it.<br>
    <br>
    The problem with very long commands (to send blocks of data through
    the digimode terminal), as noted by Stefan, has now been fixed. The
    string of "zeroes and ones" can be up to 1023 characters long now.<br>
    <br>
    V2.79 b9 can be downloaded from <br>
    &nbsp;<a class="moz-txt-link-freetext" href="http://dl4yhf.ssl7.com/speclab/install_speclab.zip">http://dl4yhf.ssl7.com/speclab/install_speclab.zip</a> <br>
    <br>
    Please keep a copy of your 'working' version because not all of the
    new functions in SL have been properly tested yet, and there may be
    a couple of bugs lurking in less frequently used subroutines.<br>
    <br>
    73,<br>
    &nbsp; Wolf .<br>
    <br>
  </body>
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