Date: Fri, 6 Jan 2017 04:48:49 -0500
From: Markus Vester <markusvester@aol.com>
To: rsgb_lf_group@blacksheep.org
Message-Id: <159732e46f1-3a0a-37e28@webprd-a80.mail.aol.com>
In-Reply-To: <586F5D60.4030309@abelian.org>
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Subject: Re: VLF: Back on 5.17 kHz / 58 km...
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Hi Stefan, Paul,

so that  makes a fine record of 5.17 kHz successes between the two of you! =
Wonder what will be possible when Stefan goes to max voltage on 2.97 kHz?

I'm trying to keep track of the 60 s PSK traces on the tree grabber. There =
was a 12.5 h transmission on Jan 4th, and a similar one lasting 23.5 h on 5=
th/6th. As the duration of 8 characters 16k25 should be 23h 28min, the latt=
er was probably the right one.

I'd still like to look for a daytime carrier here, 1.25 mHz below or above =
5170 Hz.

All the best,
Markus (DF6NM)

-----Urspr=C3=BCngliche Mitteilung-----=20
Von: Paul Nicholson <vlf0403@abelian.org>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Fr, 6 Jan 2017 10:06 am
Betreff: Re: VLF: Back on 5.17 kHz / 58 km...


Stefan wrote:

 > f =3D 5170.000000 Hz
 > Start time: 04.Jan.2017 08:00:00 UTC
 > Symbol length: 60 s
 > Characters: 8
 > CRC 16
 > Coding 16K25A

 > I will repeat the transmission starting [5th] 8 UTC...

Easy decode, +3.3dB with constant reference phase.

Decoder continues to run, I expect a better decode with
some phase pattern that compensates for the day/night
shift.

--
Paul Nicholson
--
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<div style=3D"font-size:10pt;font-family:arial,helvetica,sans-serif;color:b=
lack;"><div style=3D"color: black; font-family: arial,helvetica,sans-serif;=
 font-size: 10pt;">Hi Stefan, Paul,<br><br>so that&nbsp; makes a fine recor=
d of 5.17 kHz successes between the two of you!&nbsp;Wonder what will be po=
ssible when Stefan goes to max voltage on 2.97 kHz?<br><br>I'm trying to ke=
ep track of the 60 s PSK traces on the tree grabber. There was a 12.5 h tra=
nsmission on Jan 4th, and a similar one lasting 23.5 h&nbsp;on 5th/6th. As =
the duration of 8 characters 16k25 should be 23h 28min,&nbsp;the latter was=
 probably the&nbsp;right one.<br><br>I'd still like to&nbsp;look for&nbsp;a=
 daytime carrier&nbsp;here, 1.25 mHz below or above 5170 Hz.<br><br>All the=
 best,<br>Markus (DF6NM)<br><br>-----Urspr=C3=BCngliche Mitteilung----- <br=
>Von: Paul Nicholson &lt;vlf0403@abelian.org&gt;<br>An: rsgb_lf_group &lt;r=
sgb_lf_group@blacksheep.org&gt;<br>Verschickt: Fr, 6 Jan 2017 10:06 am<br>B=
etreff: Re: VLF: Back on 5.17 kHz / 58 km...<br><br></div><br>Stefan wrote:=
<br><br> &gt; f =3D 5170.000000 Hz<br> &gt; Start time: 04.Jan.2017   08:00=
:00 UTC<br> &gt; Symbol length: 60 s<br> &gt; Characters: 8<br> &gt; CRC 16=
<br> &gt; Coding 16K25A<br><br> &gt; I will repeat the transmission startin=
g [5th] 8 UTC...<br><br>Easy decode, +3.3dB with constant reference phase.<=
br><br>Decoder continues to run, I expect a better decode with<br>some phas=
e pattern that compensates for the day/night<br>shift.<br><br>--<br>Paul Ni=
cholson<br>--<br><br></div>
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