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From: "James Moritz" <james.moritz@btopenworld.com>
To: <rsgb_lf_group@blacksheep.org>
References: <F4E8A04C3CBA4C67AE9C3318F2F40C4F@JimPC> <496E6B45.5020100@usa.net> <0F3DBBAC61C545AE85525CD884B642EC@Black> <20090114231729.6b8aea4f@lurcher> <2AD1A31DF27448F495C0CE7FF33CE9DE@Black> <C4F6E432D5814955A1FDD42B0279F472@AGB> <1E6D0A88C4DE49E5A2AF05911187E7A3@Black> <424931F60B3D4F41AB7DCB9E9FCAB3C5@big7368b9a7d3d> <E68E6C5A539A4838ADAC20BE903CBC68@JimPC> <000e01c97703$df2dfcb0$8d01a8c0@JAYDELL>
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Date: Thu, 15 Jan 2009 14:39:49 -0000
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Subject: LF: Re: 136khz WSPR
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Dear Jay, Vernon, LF Group,

Jay - Thanks for looking -  I can see that could be the problem!

The WSPR signal has a bandwidth of around 6Hz, so the problem is finding 
that much of a gap between lines. E.g. with the Northeastern USA chain with 
9960 GRI, lines should appear every 5.02Hz roughly, although I expect some 
will probably be stronger than others. Can you look with Argo on a wider 
setting to see if there are any 6Hz wide spaces, or at least areas where the 
lines are weaker?

Vernon - I'm afraid "SCP/LN8PHG" probably isn't a genuine signal, but WSPR 
producing a false decode - this is fairly common when narrow-band QRM is 
present, although only occurs rarely when just the band noise is present. 
Because of the way WSPR encodes/decodes, it will usually try to format any 
"gobbledygook" as a legitimate message with callsigns, reports, etc. You can 
usually tell by the outlandish callsigns and locators. A pity really, 
otherwise they would be pretty impressive DX!

Cheers, Jim Moritz
73 de M0BMU