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From: "Alan Melia" <alan.melia@btinternet.com>
To: <rsgb_lf_group@blacksheep.org>
References: <bcf.879db59.32aa24e4@aol.com><003301c71a70$8bfcac40$a7d8f604@ELNkk7rc>	<003601c71a72$a52f4180$0200a8c0@DR4F1261A8E5>	<001d01c71a78$706ae5c0$2860f504@ELNkk7rc>	<1165549028.4578dde431d49@webmail.duluthmn.com> <457C21DA.1040700@usa.net> <458C1875.9080903@usa.net> <001c01c725fb$88be9980$2101a8c0@PCRoelof> <00b301c7260c$d187cef0$65a4a8c0@flohxp>
Date: Sat, 23 Dec 2006 00:25:37 -0000
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Subject: LF: Re: what's this ?
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Status: O

Hi Stephan, well it looks as though most of the "elements" occur coincident
with clicks or bangs (static?), the vertical bars. It could be a Loran line
just starting to come up and "illuminated" by the noise. Sometimes the
addition of noise or dither will push a signal over the threshold and make
it detectable.

Accurate measuremnt of the element and space lengths and starting positions
will normally give you a good clue as to whether it is a signal or not. I
usually make myself a little paper template for different speeds.

Best Wishes de Alan G3NYK

----- Original Message -----
From: Stephan Hans <mailmaster@nanomail.de>
To: <rsgb_lf_group@blacksheep.org>
Sent: 22 December 2006 21:04
Subject: LF: what's this ?


> Hi @ all,
>
> what's this @ 136320.0 Hz from 16:20 to 17:00 UTC:
> http://dl3fch.st-hans.de/capt236.jpg
>
> Just random noise artefacts, what do you think ?
>
> vy 73 de Stephan / DL3FCH
>
> ps. I'm actually messing around with spectrumlab, but I can't figure out,
> how to activate some kind of agc (to get automatic contrast/brightness).
> Maybe somebody can give me a hint... ?
>
>