Message-ID: <896F3C8723D84AD7B85CF110BBCEFB98@AGB>
From: "Graham" <g8fzk@g8fzk.fsnet.co.uk>
To: <rsgb_lf_group@blacksheep.org>
References: <BLU146-W133179FB8E3CE8E9915DACFED0@phx.gbl>, <BLU146-W262E3466DC2E03E577AFDACFED0@phx.gbl>, <D7A418493EBC4423BC13F8EE114A69EA@JimPC> <4AA419A5.22911.343DC58@dave.davesergeant.com>
In-Reply-To: <4AA419A5.22911.343DC58@dave.davesergeant.com>
Date: Sun, 6 Sep 2009 22:17:20 +0100
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Subject: Re: LF: Re: WSPR beacon
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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" <dave@davesergeant.com>
Sent: Sunday, September 06, 2009 9:20 PM
To: <rsgb_lf_group@blacksheep.org>
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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