[linrad] Re: Difficulties

[Roger Rehr <comcast.net; w3sz@xxxxxxxxxxxxxxxx>]

Hi, Leif,

Answers below ;)

Quoting Leif Asbrink <leif@xxxxxxxxxx>:

> Hi Roger,
>
> > I have always thought that your recordings of the Leonids meteor shower
> > when you were having lots of powerline noise were excellent test
> > objects!  I use them for examples here.
> Oooh! That is a special case with local powerline noise. Linrad
> can take care of that reasonably well and there is not much
> I can do to improve with the current structure of Linrad.

OK.  I understand.  Others should check these out ;)

I wanted to put the link here but I can't find it :(

Maybe you can post it?

> > There are on my website some recordings from July 2003 of 20 14 MHz
> > with lots of powerline noise that totally covered up some weaker
> > stations, that could only be copied after processing with Linrad or
> > Winrad.  But you have already worked on these, as did Alberto.  I don't
> > have anything tougher than these, although I think they are tougher
> > than Ram's files from the past 2 weeks.
> But I am looking for other kinds of interference. Did you never
> have to ask someone to repeat because you could not copy due
> to interference of other kinds than powerline noise? While recording:-)
> (Splatter, keying clicks or something else?)

Yes...many times; but usually during a contest I am too stupid to 
multitask. So because I am playing with the controls and trying to work 
the station that I can barely hear, I forget to type 'S" and thus never 
get the data saved.  There is another contest this weekend.  Maybe 
there will be lots of noise and I will actually remember to save a file 
[it could happen] ;)

> I am also interested in marginal SSB. I could add an adaptive filter
> in SSB mode to try to improve S/N.

OK.  I will see what I can find this weekend.  There should be lots of 
splatter to find.  Now if I can just remember to record it.  I will try 
putting lots of reminder post-it notes on my monitor screens that say 
'its the recording, stupid'.  Stay tuned ;)

73,

Roger Rehr W3SZ


Roger Rehr
W3SZ
http://www.nitehawk.com/w3sz


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