[Lf] [Fwd: LF: Spectran beta 3, build 262]

[Andre' Kesteloot]

Rik Strobbe wrote:

> I tested the lastest version (built 262) last night on Marco's (IK1ODO)
> signal. Results are amazing, while I had poor copy with Spectogram I could
> get a perfect 'O' signal with Spectran. It just took some time to
> experiment with the (many) parameters.
>
> After some 'playing' with Spectran I found that following parameters gave
> best results on the IK1ODO beacon signal :
>
> Avg Factor = 4 + integration
> Sample rate = 8000Hz (or 5512.5Hz)
> Contrast = 125
> Res = 0.061Hz (or 0.042Hz at 5512.5Hz sample rate)
> Speed = default (startup) value
> Lvl = adjusted until the signal is at +/- 75% of the scale at the upper screen
> Log = on
>
> Setting 'Lvl' high enough is very important, from Spectogram I was used to
> have a rather low input level for best result but Spectran needs a much
> higher input level. Also 'Log' must be active (red). Increasing Contrast
> from 100 (default) to 125 improved things a lot.
> Marco's signal was too strong to test higher averaging and/or higher Contrast.
>
> Question to Marco : what was your ERP last night (+/- 22 UT) ?
> Would it be possible to decrease it with 3 to 6 dB, to allow to test
> Spectran on a really weak signal.
>
> Finaly : congrats to Alberto and his friend, the lastest version of
> Spectran is an excellent tool !
>
> 73, Rik  ON7YD
>
> At 12:05 16/05/00 +0200, you wrote:
> >The version beta 3, build 262 of Spectran is now availbale at the URL :
> >  http://www.weaksignals.com
> >
> >It is a spectral analysis software, still in beta, expecially tailored for
> >EME and VLF work.  Freeware.
> >
> >Alberto    I2PHD
> >
> >
> >
> >