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[linrad] SSB Parameters

Hi, Stan,

Thanks for the note!

I will post them. The linux computers and Linrad are at my remote  
location, and I likely won't get there today, nor tomorrow, so it likely  
will be Tuesday before I do so.

I made NO attempt to optimize the parameters for SSB,as it wasn't  
necessary.  It works fine with an almost random set of parameters [meaning  
I took the defaults, or my defaults made up and saved in a separate  
directory long ago, which I copy to each new Linrad directory so that each  
new version of Linrad won't ask me for parameters].

The key issues to me are [1] setting the mouse-adjustable filter to the  
appropriate bandwidth, which is [a] visual, matching the signal width  
observed to the space between the yellow lines and [b] auditory, for what  
sounds good in terms of the backround noise creeping in around the ssb  
signal and of course [2] adjusting the red bfo bars so that the signal  
sounds natural when it is visually centered properly within the filter  
bandpass limits.

The automatic polarization angle algorithm seems to work fine on ssb  
signals here.  The noise blanker works well except when there are very  
strong signals.  Then I have to turn it off to prevent distortion, and  
suppression of desired signals.

As noted above, I will send the parameters when I get to the hilltop.  But  
I wouldn't recommend waiting for them if you want to play with things on  
ssb.  You can probably do better with minimal thought, as I gave them none  
or next to none since they worked so well right off.  That's how I've  
tended to do things here.  If the defaults work just as I want, I don't  
change things.  If they don't, then I start thinking.  Not very academic,  
but it gives me more time to do other things.  ;)

Have a great week, and



On Sun, 26 Sep 2004 13:26:18 EDT, <Stanka1ze@xxxxxxx> wrote:

>  Hello Roger,
> Would you be so kind as to post all of the set up paramaters you use in
> recieving SSB? My new contest QTH has very strong interferance comming  
> from a gas
> compressor plant 1 mile away. I am hoping the Linrad noise blanker will  
> be of
> some help.
> Thanks, Stan, KA1ZE

Roger Rehr