[Elecraft] Source for Spectrogram Measurements?

[Don Wilhelm]

Bill,
Can you hear the K2 in your PC speakers?  If so, Spectrogram should show you
a trace.
You can try the mic input of your soundcard if you don't have enough gain
with the line input.
Along the same line - check your soundcard controls and make certain that
you do not have the Line In (or Mic if applicable) muted - check boxes on
the bottom of the volume control window.

Check the slider (looks like a scroll bar) at the right side of the
Spectrogram window - set it to the top.

Make certain that you tell Spectrogram to show you the same channel that
your signal is connected to.  Normally, the tip is the left channel and the
ring the right channel.

That should get a display for you.

73,
Don W3FPR


----- Original Message -----
From: "William M. Spaulding, Sr." <billspau@att.net>
To: "Elecraft Reflector" <elecraft@mailman.qth.net>
Sent: Monday, July 28, 2003 4:36 AM
Subject: [Elecraft] Source for Spectrogram Measurements?


| Hi, Folks,
|
| I have been struggling for many hours trying to get some version of
| Spectrogram work.  I'm using Version 6 with a broadband noise generator
that
| is in an impedance bridge I built years ago for antenna analysis.
|
| I get plots that are just noise,  The filter skirts are noise as well as
the
| passbands being changing noisy shapes, some of which have NO resemblance
to
| a filter shape.
|
| In some of the narrow bandwidths, I try to set the filter shape in the
| position described in Tom's (N0SS) notes he wrote for the Elecraft site.
|
| What sources are you using?  It could be that my old homebrew machine has
| much too high a peak-to-average ratio.
|
| Honest, gang, I don't know how to make it work.  I even connected the K2
to
| my PC via a 1/8" sound cable to my SoundBlaster sound card "Line In" jack.
| Sure should have worked.
|
| Comments??
|
| Thanks,
|
| Bill
| NA7Y
|
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