Message-ID: <4AA245D1.1050901@sighthound.demon.co.uk>
Date: Sat, 05 Sep 2009 11:04:49 +0000
From: John P-G <gm4slv@sighthound.demon.co.uk>
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References: <8E070AD22619484C9E2D22046F45C521@JimPC>	 <4AA224DE.17607.C34F15@dave.davesergeant.com>	 <4AA22EDB.2060704@sighthound.demon.co.uk> <1f0624b90909050356s2ff3e23ej283abf0cdaaafb88@mail.gmail.com>
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Subject: Re: LF: Re: WSPR beacon
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GAry, LF

Gary - G4WGT wrote:
> Hi Dave, LF,
> 
>> Dave Sergeant wrote:
>>> 3. You are of course s9+ at this range, and show as bright red on WSPR's
>>> spectrogram. Hardly 'weak signal'. Does the software cope with strong
>>> signals or does it overload?
> 
> I get about 25% decode from Graham G0NBD who is about 35-40 miles from
> me, all weaker signals decode OK. As it is a weak signal mode the
> stronger signals must be a cause of non-decodes.


Graham is often difficult here too though, and I think this is related 
to a soundcard problem at his end. The fact that you're nearer will 
probably just exacerbate the effect.

In general however it does appear that the mode is very good on weak 
signals and hit and miss on strong ones and one suspects that it's very 
intolerant of errors in soundcard sample rate - which is masked with 
weak signals to some extent.

Cheers,

John