Re: LF: EbNaut beaconing on LF

[Markus Vester <markusvester@aol.com>]

Hi Ric,

>> the bandwidth on your grabber seems larger than Domenico's

Well this is not really so. The spectral lobes from your 2 s PSK symbols are only half as wide. The peak in the zoomed spectrogram section comes mostly from the carrier pieces before and after the sequences. Domenico was using longer ones, resulting in a narrower peak. In addition you are closer to me and your signal is simply stronger here.

Best 73,

Markus

-----Ursprüngliche Mitteilung-----
Von: Riccardo Zoli <riccardozoli80@gmail.com>
An: LF Group <rsgb_lf_group@blacksheep.org>
Verschickt: Do, 9. Feb 2017 23:55
Betreff: Re: LF: EbNaut beaconing on LF

:-))) it wasn't my intention, dear Markus!
Thanks for report, as usual.
In my case the BPSK modulation is simply obtained by a CMOS XOR port, in fact the bandwidth on your grabber seems larger than Domenico's EbSynth test signal. Now I'm putting 200W on antenna.

All the best

73 de IW4DXW Riccardo

Il 09/Feb/2017 23:05, "Markus Vester" <markusvester@aol.com> ha scritto:

Tried 8K25 first but it immediately froze my PC, requiring a hard reset. The 8K21A message starting 21:30 decoded fine.

Good luck!

73, Markus (DF6NM)


-----Ursprüngliche Mitteilung-----
Von: Riccardo Zoli <riccardozoli80@gmail.com>
An: LF Group <rsgb_lf_group@blacksheep.org>
Verschickt: Do, 9. Feb 2017 22:31
Betreff: Re: LF: EbNaut beaconing on LF

Thanks so much, Paul. Sorry!
Ok, 8K21A confirmed for next transmissions.
Duration: 19' 12".

73 de IW4DXW Riccardo

Il 09/Feb/2017 22:16, "Paul Nicholson" <vlf0403@abelian.org> ha scritto:

Riccardo wrote:

> Coding: 8K25A

Warning: it will take about 20 Gbyte RAM to decode 6 chars.

About 5 Gbyte for 6 chars with 8K23A.

8K21A about 1.2 Gbyte is a good choice.

--
Paul Nicholson
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