Dave,
Looks to be the same problem I had at the end of last year with a delta-4
pci sound card , the card worked fine for data modesand did not need to
have a clock adjustment, however it produced some confusing results on
wspr, in that it appeared to shorten the transmission time by a couple of
seconds, which in turn, resulted in only low/ noisy signals decoding on rx ,
with the same situation occurring during tx, in that a slolid signal did
not decode where as a lower/broken reception decoded reliably.
Changing to the older awe64 resolved the problem.
G ..
--------------------------------------------------
From: "Dave Sergeant" <[email protected]>
Sent: Sunday, September 06, 2009 9:20 PM
To: <[email protected]>
Subject: LF: Re: WSPR beacon
On 6 Sep 2009 at 21:05, James Moritz wrote:
Dear LF Group,
The M0BMU WSPR beacon is running again - I have jacked up the antenna to
increase the ERP a bit. G4WGT and G7NKS are also active - any reports
would be very welcome.
Cheers, Jim Moritz
73 de M0BMU
OK, it looks as if the sound card clock synch error is the problem. As
suggested I have been trying recording for the first minute of each
period then stopping - by the simple expedient of switching the K2 to a
different band. Result, solid copy.....
1958 16 2.5 0.503972 0 M0BMU IO91 37
2000 16 2.4 0.503972 0 M0BMU IO91 37
2002 16 2.6 0.503972 0 M0BMU IO91 37
2006 -26 6.2 0.503965 0 M0BMU IO91 37
2006 16 2.6 0.503972 0 000AAA (BadMsg)
2008 12 2.5 0.503972 0 M0BMU IO91 37
2010 11 2.7 0.503971 0 M0BMU IO91 37
(apart from something went a bit wrong at 2006... And note the +16dB,
you are strong!).
I can see a couple of other weak traces on the spectrogram but no copy
of others.
(and having now stopped doing that tedious turning off after 1 minute I
now see that it is copying Jim solidly now on full cycles. Maybe you
did something your end Jim?.....)
73 Dave G3YMC
http://www.davesergeant.com
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05:51:00
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