Message-ID: <4F97E78F.3040802@iup.uni-heidelberg.de>
Date: Wed, 25 Apr 2012 14:01:19 +0200
From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= <Stefan.Schaefer@iup.uni-heidelberg.de>
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Subject: Re: LF: Generating 8970 Hz carrier with Spectrum Lab ?
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Hi Roger,

Am 25.04.2012 11:38, schrieb Roger Lapthorn:
>
> Another question for Wolf etc: how would one use a single PC with two 
> instances of SL running to (a) lock the soundcard to an 18-22kHz MSK 
> signal like GBZ one one instance and then (b) generate a (frequency 
> stable and locked)  output signal for an 8.970kHz TX?

You can do it in a single SL instance. Actually it must be done in one 
instance, as long as the generated frequency should be locked. Use the 
input to receive your reference signal and to lock on. Disable the 
filter box (stopped and not bypassed) in the components circuit window. 
Switch the frequency generator to L5, or the digimode terminal.
That's all.

73, Stefan/DK7FC



>
>
> It is some months since I have used SL and I was never what might be 
> called an "expert user".
>
> 73s
> Roger G3XBM
>
>
>
>
>
> On 25 April 2012 10:12, PA1SDB, Peter <pa1sdb@amsat.org 
> <mailto:pa1sdb@amsat.org>> wrote:
>
>     Hello VLF,
>     I like to do some local test here with Spectrum lab setings (and
>     who knows, High ERP transmissions later  :-)
>     I have here a notebook that generates a signal with the Signal
>     generator in Spectrum Lab at 8970.1 Hz.
>     It has a Loop connected at the input and thats how it is locked to
>     a GDO (HWU, FTA, what is available)
>     I tried several, and that Lock wondow gets green, but output looks
>     terrible.
>     To radiate the signal I use a pice of wire at the notebook LS output.
>     Below two grab's over the same periode of time.
>     My localy generated signal at 8970.100 Hz and for comparison the
>     signal of DJ8WX at 8970.022 Hertz.
>     Both grab's are made with the same Spectrum Lab task.
>     Why does my signal look like a widband FM transmission ?
>     Best 73's, Peter - PA1SDB
>
>
>
>
> -- 
> http://g3xbm-qrp.blogspot.com/
> http://www.g3xbm.co.uk
> https://sites.google.com/site/sub9khz/
> http://qss2.blogspot.com/
>

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Hi Roger, <br>
<br>
Am 25.04.2012 11:38, schrieb Roger Lapthorn:
<blockquote
 cite="mid:CAHAQVWNqFmyrEA5Jjq0EieKQO4G=7L8jxmdPu_JP_EsxuqdBvA@mail.gmail.com"
 type="cite">
  <div class="gmail_extra"><br>
Another question for Wolf etc: how would one use a single PC with two
instances of SL running to (a) lock the soundcard to an 18-22kHz MSK
signal like GBZ one one instance and then (b) generate a (frequency
stable and locked)&nbsp; output signal for an 8.970kHz TX?</div>
</blockquote>
<br>
You can do it in a single SL instance. Actually it must be done in one
instance, as long as the generated frequency should be locked. Use the
input to receive your reference signal and to lock on. Disable the
filter box (stopped and not bypassed) in the components circuit window.
Switch the frequency generator to L5, or the digimode terminal. <br>
That's all.<br>
<br>
73, Stefan/DK7FC<br>
<br>
<br>
<br>
<blockquote
 cite="mid:CAHAQVWNqFmyrEA5Jjq0EieKQO4G=7L8jxmdPu_JP_EsxuqdBvA@mail.gmail.com"
 type="cite">
  <div class="gmail_extra"> <br>
  <br>
It is some months since I have used SL and I was never what might be
called an "expert user".<br>
  <br>
73s<br>
Roger G3XBM<br>
  <br>
  <br>
  <br>
  <br>
  <br>
  <div class="gmail_quote">On 25 April 2012 10:12, PA1SDB, Peter <span
 dir="ltr">&lt;<a moz-do-not-send="true" href="mailto:pa1sdb@amsat.org"
 target="_blank">pa1sdb@amsat.org</a>&gt;</span> wrote:<br>
  <blockquote class="gmail_quote"
 style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
    <div
 style="padding-left: 10px; padding-right: 10px; padding-top: 15px;"
 bgcolor="#ffffff" name="Compose message area">
    <div><font face="Georgia">Hello VLF,</font></div>
    <div><font face="Georgia">I like to do some local test here with
Spectrum lab setings (and who knows, High ERP transmissions later&nbsp; :-)</font></div>
    <div><font face="Georgia">I have here a notebook that generates a
signal with the Signal generator in Spectrum Lab at 8970.1 Hz.</font></div>
    <div><font face="Georgia">It has a Loop connected at the input and
thats how it is locked to a GDO (HWU, FTA, what&nbsp;is available)</font></div>
    <div><font face="Georgia">I tried several, and that Lock wondow
gets green, but output looks terrible.</font></div>
    <div><font face="Georgia">To radiate the signal I use a pice of
wire at the notebook LS&nbsp;output.</font></div>
    <div>&nbsp;</div>
    <div><font face="Georgia">Below two grab's over the same periode of
time.</font></div>
    <div><font face="Georgia">My localy generated signal at 8970.100 Hz
and for comparison the signal of DJ8WX at 8970.022 Hertz.</font></div>
    <div>&nbsp;</div>
    <div><font face="Georgia">Both grab's are made with the same
Spectrum Lab task.</font></div>
    <div>&nbsp;</div>
    <div><font face="Georgia">Why does my signal look like a widband FM
transmission ?</font></div>
    <div>&nbsp;</div>
    <div><img moz-do-not-send="true" src=""></div>
    <div>&nbsp;</div>
    <div>&nbsp;</div>
    <div><font face="Georgia">Best 73's, Peter - PA1SDB</font></div>
    <div>&nbsp;</div>
    <div>&nbsp;</div>
    </div>
  </blockquote>
  </div>
  <br>
  <br clear="all">
  <br>
-- <br>
  <font color="#888888"> </font><font color="#888888"><a
 moz-do-not-send="true" href="http://g3xbm-qrp.blogspot.com/"
 target="_blank">http://g3xbm-qrp.blogspot.com/</a></font><br>
  <font color="#888888"><a moz-do-not-send="true"
 href="http://www.g3xbm.co.uk" target="_blank">http://www.g3xbm.co.uk</a><br>
  <a moz-do-not-send="true"
 href="https://sites.google.com/site/sub9khz/" target="_blank">https://sites.google.com/site/sub9khz/</a><br>
  </font><font color="#888888"><a moz-do-not-send="true"
 href="http://qss2.blogspot.com/" target="_blank">http://qss2.blogspot.com/</a></font><br>
  <br>
  </div>
</blockquote>
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