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Date: Sat, 28 Jan 2012 10:18:14 -0500
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From: "Douglas D. Williams" <kb4oer@gmail.com>
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: VLF this morning in TN
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Thank you Wolf. Those are nice captures for comparison. I see you have no
trouble receiving NAA, but the other two continental U.S. stations are much
weaker.

The alpha stations are difficult for me to copy with the sound card, but I
can often hear them at night using my R75 and upconverter with the 250Hz CW
filter.

The OMEGA system, when it was still active, put out some very strong
signals here. All one really needed to hear those was an audio amp, short
whip antenna, and headphones.....and sufficiently sensitive hearing.

I find that when I listen to some of the live streaming "natural radio"
receivers in Europe, I can hear the Alphas in my right ear, but not my left
ear. Guess my high frequency hearing is starting to go.

Doug - KB4OER

On Sat, Jan 28, 2012 at 9:31 AM, wolf_dl4yhf <dl4yhf@freenet.de> wrote:

> Hi Douglas,
>
> Nice reception there. For comparison, I have made these broadband VLF
> screenshots in the past:
>
> http://www.qsl.net/dl4yhf/vlf_**rdf/latest_vlf_spectra.htm<http://www.qsl.net/dl4yhf/vlf_rdf/latest_vlf_spectra.htm>
>
> Will add a more recent spectrogram covering the 48 kHz range later, when
> time and local QRM permits.
>
> 73,
>   Wolf .
>
>

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<div>Thank you Wolf. Those are nice captures for comparison. I see you have=
 no trouble receiving NAA, but the other two continental U.S. stations are =
much weaker.</div><div>=A0</div><div>The alpha stations are difficult for m=
e to copy with the sound card, but I can often hear them at night using my =
R75 and upconverter with the 250Hz CW filter.</div>
<div>=A0</div><div>The OMEGA system, when it was still active, put out some=
 very strong signals here. All one really needed to hear those was an audio=
 amp, short whip antenna, and headphones.....and sufficiently sensitive hea=
ring. </div>
<div>=A0</div><div>I find that when I listen to some of the live streaming =
&quot;natural radio&quot; receivers in Europe, I can hear the Alphas in my =
right ear, but not my left ear. Guess my high frequency hearing is starting=
 to go.</div>
<div>=A0</div><div>Doug - KB4OER<br><br></div><div class=3D"gmail_quote">On=
 Sat, Jan 28, 2012 at 9:31 AM, wolf_dl4yhf <span dir=3D"ltr">&lt;<a href=3D=
"mailto:dl4yhf@freenet.de">dl4yhf@freenet.de</a>&gt;</span> wrote:<br><bloc=
kquote style=3D"margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color=
:rgb(204,204,204);border-left-width:1px;border-left-style:solid" class=3D"g=
mail_quote">
Hi Douglas,<br>
<br>
Nice reception there. For comparison, I have made these broadband VLF scree=
nshots in the past:<br>
<br>
<a href=3D"http://www.qsl.net/dl4yhf/vlf_rdf/latest_vlf_spectra.htm" target=
=3D"_blank">http://www.qsl.net/dl4yhf/vlf_<u></u>rdf/latest_vlf_spectra.htm=
</a><br>
<br>
Will add a more recent spectrogram covering the 48 kHz range later, when ti=
me and local QRM permits.<br>
<br>
73,<br><font color=3D"#888888">
 =A0 Wolf .<br>
<br>
</font></blockquote></div><br>

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