Re: VLF: 8270: now 8269.990Hz Sucess!?! - yes, alsoin Heidelberg

[Markus Vester <markusvester@aol.com>]

Sorry Uwe, nil here. All I can offer is "QR-" and "8@=" at low SNR and high rank numbers.

 

I did see another carrier on 8270.000 this afternoon, presumably again from Roland DL3NDR.

 

Hey we need a band plan ;-) No we don't really. However I would suggest to move EbNaut activity away from the grabber waterhole by an integer multiple of the symbol rate (N*0.0333 Hz for 30 s, e.g. 8269.9667 Hz). Then any interference from carriers near 8270.000 will be suppressed by the sin(x)/x response of the EbNaut decoder's symbol integration filter.

 

73, Markus

 

 

 

 

-----Ursprüngliche Mitteilung-----
Von: uwe-jannsen <uwe-jannsen@kabelmail.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Mo, 4 Apr 2016 10:25 pm
Betreff: AW: Re: AW: AW: Re: VLF: 8270: now 8269.990Hz Sucess!?! - yes, alsoin Heidelberg

Paul,
I counted on you!

Stefan, Markus,
did you decode something?

Uwe

 

Von: Paul Nicholson <vlf0403@abelian.org>
Gesendet: 04.04.2016 19:36
An: <rsgb_lf_group@blacksheep.org>
Betreff: Re: AW: AW: Re: VLF: 8270: now 8269.990Hz Sucess!?! - yes, alsoin Heidelberg

 

> sri, it is raining accompanied by heavy wind.
> switch off time was abt 16:27

That was enough, about 70% of the message was transmitted.

Copied an obvious correct decode with Eb/N0 = +2.4 dB.

--
Paul Nicholson
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