Date: Mon, 2 Jan 2017 15:00:36 -0500
From: Markus Vester <markusvester@aol.com>
To: rsgb_lf_group@blacksheep.org
Message-Id: <15960c4f1fb-6a63-2e9ff@webprd-m77.mail.aol.com>
In-Reply-To: <586A8A05.5090901@posteo.de>
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Subject: Re: VLF: Back on 5.17 kHz / 58 km...
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Thanks Stefan. But I'm afraid it won't work: There was absolutely no hint o=
f your offset carrier in my 63 uHz spectrogram, and also not in another one=
 with 31 uHz bins. Perhaps I was too optimistic about my QRM situation on 5=
.17 kHz.

If you like, we could try again with another long carrier with offset durin=
g the daytime, when noise is lower and there's less propagational phase unc=
ertainty. =20

Best 73,
Markus

-----Urspr=C3=BCngliche Mitteilung-----=20
Von: DK7FC <selberdenken@posteo.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Mo, 2 Jan 2017 6:37 pm
Betreff: Re: VLF: Back on 5.17 kHz / 58 km...


Let's try further challenges on 5.17 kHz. A first night transmission:

f =3D 5170.000000 Hz
 Start time: 02.Jan.2017   17:00:00 UTC
 Symbol length: 40 s
 Characters: 5
 CRC 16
 Coding 16K25A
 Duration: 12h, 26m, 40s
 Antenna current: ~ 200 mA


 Markus, would it make sense to try a shorter message in 8K19A with long sy=
mbols for you?
 I did not see my carrier on 5169.99975 Hz on your grabber though.=20

 73, Stefan
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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;">Thanks Stefan. But I'm afraid it won't work: There was a=
bsolutely no hint of your offset carrier in my 63 uHz spectrogram, and also=
 not in&nbsp;another one with 31 uHz bins.&nbsp;Perhaps I was too optimisti=
c about my QRM situation on 5.17 kHz.<br><br> If you like, we could try aga=
in with&nbsp;another&nbsp;long carrier with offset during the daytime, when=
&nbsp;noise is lower and there's less&nbsp;propagational phase uncertainty.=
&nbsp;&nbsp;<br><br>Best 73,<br>Markus<br><br>-----Urspr=C3=BCngliche Mitte=
ilung----- <br>Von: DK7FC &lt;selberdenken@posteo.de&gt;<br>An: rsgb_lf_gro=
up &lt;rsgb_lf_group@blacksheep.org&gt;<br>Verschickt: Mo, 2 Jan 2017 6:37 =
pm<br>Betreff: Re: VLF: Back on 5.17 kHz / 58 km...<br><br></div>
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Let's try further challenges on 5.17 kHz. A first night transmission:<br>
<br>
<big><b>f =3D 5170.000000 Hz<br>
Start time: 02.Jan.2017 &nbsp; 17:00:00 UTC<br>
Symbol length: 40 s<br>
Characters: 5<br>
CRC 16<br>
Coding 16K25A<br>
Duration: 12h, 26m, 40s<br>
Antenna current: ~ 200 mA</b></big><br>
<br>
<br>
Markus, would it make sense to try a shorter message in 8K19A with long
symbols for you?<br>
I did not see my carrier on 5169.99975 Hz on your grabber though. <br>
<br>
73, Stefan<br>
<blockquote cite=3D"about:blank">
</blockquote>


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