I suspected so but had to ask LOL!!!!
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of James Moritz
Sent: Thursday, January 15, 2009 10:40
To: [email protected]
Subject: LF: Re: 136khz WSPR
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
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