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Re: LF: QRM 498-502 kHz

To: [email protected]
Subject: Re: LF: QRM 498-502 kHz
From: "Roelof Bakker" <[email protected]>
Date: Tue, 05 Oct 2010 22:47:10 +0200
In-reply-to: <20101005214122.35319e66@opc1>
References: <507BA536922744A492A0688F07B4851F@Inspiron> <6CE5F9E1C58945C49E23494A9B755CE3@AGB> <B96C7E61B3264E81BC6B04CED43DAF29@AGB> <20101005211707.34f8e8be@opc1> <20101005214122.35319e66@opc1>
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Op Tue, 05 Oct 2010 22:41:22 +0200 schreef John P-G <[email protected]>:

On Tue, 5 Oct 2010 21:17:07 +0100
John P-G <[email protected]> wrote:

It seems strange that I can't hear it but that might help rule in/out
a possible location?

I'll keep looking.



I spoke too soon! I think I can see it on a waterfall now, but using a
passive wire antenna. Whether the ALA1530 loop has a low enough noise
floor to use it to DF is a moot point. I'll keep an eye on things see
if I can get something to get a bearing on.

In the meantime I've set up SpecLab to save a grab every 5 minutes to
my public Dropbox folder, here:

http://dl.dropbox.com/u/3551430/gm4slv.jpg

The grabber covers 497.6 - 499.2 which shows the LF edge of the noise
at 498kHz. I might have to think about a Perseus now, to look at
wider areas. An SSB bandwidth suddenly looks so limited!

Cheers,

John


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