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Message-ID: <526233.56318.qm@web28103.mail.ukl.yahoo.com>
Date: Thu, 4 Mar 2010 14:10:44 -0800 (PST)
From: M0FMT <m0fmt@yahoo.co.uk>
To: rsgb_lf_group@blacksheep.org
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Subject: Re: LF: VLF WEB SDR
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Hi Stefan
=A0I agree .....
The Alpha nav beacons are much stronger here than indicated on Web SDR. Al=
so the Mil data signals between abt 18.5 and 24kc/s are very much stronger=
 here also. I agree it looks like they have a very poor antenna attached.
Here, most of the time=A0I use=A0Winrad SDR application with a strapped 80=
m dipole up abt 13m=A0fed into the SC mic socket and get very strong signa=
ls on that part of the band.
=A0
However the WEBSDR is a very useful resource for doing tests=A0on MF/LF.
=A0
No activity on the Dreamers band owing to pressing domestic commitments fo=
r=A0at least the=A0next week.

73 es GL petefmt

--- On Thu, 4/3/10, Roelof Bakker <roelof@ndb.demon.nl> wrote:


From: Roelof Bakker <roelof@ndb.demon.nl>
Subject: Re: LF: VLF WEB SDR
To: rsgb_lf_group@blacksheep.org
Date: Thursday, 4 March, 2010, 15:56


Hello Stefan,

The answer is simple: the reception antenna is not working properly or the=
 signals are masked by a high noise floor. When you look at the station on=
 18.3 kHz, it is quite weak.

I have these at -62 dBm, whilst the Alpha stations are 40 dB weaker.
So no chance to spot these, I guess.

73,
Roelof, pa0rdt




     =20

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<table cellspacing=3D"0" cellpadding=3D"0" border=3D"0" ><tr><td valign=3D=
"top" style=3D"font: inherit;"><DIV>Hi Stefan</DIV>
<DIV>&nbsp;I agree .....</DIV>
<DIV>The Alpha <SPAN>nav</SPAN> beacons are much stronger here than indica=
ted on Web SDR. Also the Mil data signals between abt 18.5 and 24kc/s are=
 very much stronger here also. I agree it looks like they have a very poor=
 antenna attached.</DIV>
<DIV>Here, most of the time&nbsp;I use&nbsp;Winrad SDR application with a=
 strapped 80m dipole up abt 13m&nbsp;fed into the SC mic socket and get ve=
ry strong signals on that part of the band.</DIV>
<DIV>&nbsp;</DIV>
<DIV>However the <SPAN>WEBSDR</SPAN> is a very useful resource for doing=
 tests&nbsp;on MF/LF.</DIV>
<DIV>&nbsp;</DIV>
<DIV>No activity on the Dreamers band owing to <SPAN>pressing</SPAN> domes=
tic commitments for&nbsp;at least the&nbsp;next week.</DIV>
<DIV><BR>73 es GL petefmt<BR><BR>--- On <B>Thu, 4/3/10, Roelof Bakker <I>&=
lt;roelof@ndb.demon.nl&gt;</I></B> wrote:<BR></DIV>
<BLOCKQUOTE style=3D"BORDER-LEFT: rgb(16,16,255) 2px solid; PADDING-LEFT:=
 5px; MARGIN-LEFT: 5px"><BR>From: Roelof Bakker &lt;roelof@ndb.demon.nl&gt=
;<BR>Subject: Re: LF: VLF WEB SDR<BR>To: rsgb_lf_group@blacksheep.org<BR>D=
ate: Thursday, 4 March, 2010, 15:56<BR><BR>
<DIV class=3DplainMail>Hello Stefan,<BR><BR>The answer is simple: the rece=
ption antenna is not working properly or the signals are masked by a high=
 noise floor. When you look at the station on 18.3 kHz, it is quite weak.<=
BR><BR>I have these at -62 dBm, whilst the Alpha stations are 40 dB weaker=
.<BR>So no chance to spot these, I guess.<BR><BR>73,<BR>Roelof, pa0rdt<BR>=
<BR></DIV></BLOCKQUOTE></td></tr></table><br>



     =20

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