RE: LF: RE: EbNaut on LF

[VIGILANT Luis Fernández <luis@vigilant.es>]

Hi Vinny

 

Thank you for the link and the idea. Will try it

 

VAC is a key software in my Rx. I get 6 VFOs from Perseus from 0-500KHz bandwith and the audios are sent to different

aplications and instances using VAC. Sometimes it overruns and there is no WSPR decodes. Grabber start showing

blurry waterfalls and then it is time to restart. Not so often since I changed to an I5 machine, but a reset every week is recommended

 

73 de Luis

EA5DOM

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De: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] En nombre de Vincent Stallbaum
Enviado el: lunes, 24 de abril de 2017 17:28
Para: rsgb_lf_group@blacksheep.org
Asunto: Re: LF: RE: EbNaut on LF

Luis, have you tried this one http://vb-audio.pagesperso-orange.fr/Cable/
?
It seems to work better (cleaner spectrum) for me here with Win7x64.

73
Vinny


Am 24.04.2017 um 17:08 schrieb VIGILANT Luis Fernández:

Thank you Stefan. Noted !

 

I was getting puzzled with this and blaming VAC :-)

 

73 de Luis

EA5DOM

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De: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] En nombre de DK7FC
Enviado el: lunes, 24 de abril de 2017 16:29
Para: rsgb_lf_group@blacksheep.org
Asunto: Re: LF: RE: EbNaut on LF

Hi Luis,

It is normal that you see a few carriers of the Alpha signal because it is a pulsed/keyed signal. This can be confusing in the first step. Just increase the resolution more, then the other lines will disappear :-) (They will not fit in the spectrogram any more then...).
The center line is at 1904.7619 Hz. 424 uHz is a good bandwidth for observations, for example.

73, Stefan

Am 24.04.2017 16:20, schrieb VIGILANT Luis Fernández:

Thank you very much for the test Domenico !

 

I have been playing with Markus EbNaut utilities for SpectrumLab this weekend and just needed a signal in LF :-)

 

Anyway I'm not very confident to get decodes. Using virtual audio cable to feed SL the sample rate is 44100Hz

but when I zoom at mHz FFT-bin of a steady carrier like Alphas for example, I see a group of carriers, not

a single signal. I suspect VAC samplerate is not exactly 44100 or there is other kind of problem with this software

 

This don`t affect WSPR or Opera decodes, but may be EbNaut will not admit it. Let's try it

 

73 de Luis

EA5DOM

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De: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] En nombre de Domenico IZ7SLZ
Enviado el: lunes, 24 de abril de 2017 13:10
Para: rsgb_lf_group@blacksheep.org
Asunto: LF: EbNaut on LF

QRG 137495.000 Hz

At XX.00 and XX.30

18 characters

0.5 s/sym

8K19A CRC16

Duration 9 min 28 s

Until 22.00 UT of today.

Reports are welcome.

73, Domenico iz7slz

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