[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

FW: Re:spectran,dspfil, please clarify (Arie Dogterom Sept 29 2002)

-----Original Message-----
From: owner-linrad@xxxxxxxxxxxxxxxxxxxxx
[mailto:owner-linrad@xxxxxxxxxxxxxxxxxxxxx]On Behalf Of Arie Dogterom
Sent: Sunday, September 29, 2002 10:51 PM
To: linrad@xxxxxxxxxxxxxxxxxxxxx
Subject: Re: [linrad] Re:spectran,dspfil, please clarify

Hallo Larry,

I am interested in normal cw as we exchange in contests on the microwaves.
That is for weak signals around 5 to 10 wpm.
I think that your very slow speed cw can be dsp'd very well. In fact the
human receiver then does not use the audio but video hi
Btw what do you see on the waterfall in Spectran in those cases?

----- Oorspronkelijk bericht -----
Van: Larry Kayser <kayser@xxxxxxxxxxxx>
Aan: <linrad@xxxxxxxxxxxxxxxxxxxxx>
Verzonden: 29 september 2002 22:35
Onderwerp: [linrad] Re:spectran,dspfil, please clarify

> >Arie and others
> >
> >You wrote....I am still looking for a dsp programme which makes
> >deciphering of morse
> >signals buried in the noise better than the SP in my head does it....
> Please clarify this kind of statement a little bit more.
> I copy LF signals using Spectran with 90 second dits and 180 second dashes
> that are more than 30 dB below what anyone can hear with their ears,
> anyone can hear with their ears.
> It is important to qualify that the CW you are copying is in real time or
> very near real time, a lot of folks are getting the impression that DSP
> does not have much to offer and there are times when that is the case.
> it does not have to be the case and with some signals it is NOT the case.
> Thanks
> Larry