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Date: Tue, 10 May 2011 13:15:03 +0200
From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= <Stefan.Schaefer@iup.uni-heidelberg.de>
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Subject: Re: LF: Spectrum Lab Filtering...
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Hi Alan,

I'm not an expert of such communication formats but i totally trust the=20
skills of Wolf. Before some years i think most people would have said=20
that it's not possible to use MSK transmitter signal as a "quasi perfect=
=20
reference signal" and now we have this function included in SpecLab,=20
which allows us to display and generate DFCW-60000 and maybe slower...

Let's see what he will perform magic soon! :-)

73, Stefan/DK7FC


Am 10.05.2011 12:22, schrieb Alan Melia:
> Hi Stefan if you are thinking of NMEA for timing I think you will find=
 it
> inadequate Andy did some work on this many years back and I believe he=
 found
> there was an inconsistent delay in the NMEA strings ...... differences=
 of up
> to a second I believe. One the Oncore boards from Motorola he found the
> Motorola proprietry comms was much better. NMEA is only intended for
> transmission of data between instruments in relatively slow moving vesse=
ls,
> so that sort of uncertainty is not really an issue.
>
> Alan
> G3NYK
>
> ----- Original Message -----
> From: "Stefan Sch=E4fer"<Stefan.Schaefer@iup.uni-heidelberg.de>
> To:<rsgb_lf_group@blacksheep.org>
> Sent: Tuesday, May 10, 2011 10:27 AM
> Subject: Re: LF: Spectrum Lab Filtering...
>
>
>   =20
>> Wolf,
>>
>> Thanks for the excellent service, once again!
>> I just downloaded the new version on the LF PC and will install it
>> separately. I'll test it with Markus in CW and will give you a feedback
>> here.
>>
>> BTW what about the NMEA GPS communication? Does it already work
>> sufficiently? I would have problems to run my grabber PC at 10 SL
>> instances in stereo mode but when beeing /p TXing, it would be a great
>> improvement!!!
>>
>> 73, Stefan/DK7FC
>>
>>
>> Am 09.05.2011 22:39, schrieb wolf_dl4yhf:
>>     =20
>>> Hello Scott and Stefan,
>>>
>>> I have just uploaded yet another 'beta' of spectrum lab (V2.76 b24) to
>>> this site:
>>>
>>> http://dl4yhf.ssl7.com/speclab/install_speclab_beta.zip
>>>
>>> The automatic multi-notch filter now has up to three adjustable
>>> frequency ranges. If none of the ranges is selected, it operates on
>>> the entire spectrum (in the passband). The active ranges, if any, are
>>> displayed by red horizontal lines in the filter control window (the
>>> graphic part).
>>>
>>> BEWARE: Keep a copy of your old version ! I made so many changes in
>>> the code (mostly for the GPS-sync) that there is the risk that older,
>>> less frequently used (and rarely tested) functions don't work with
>>> this version. If so, please let me know.
>>>
>>> All the best,
>>>    Wolf .
>>>
>>>       =20
>>     =20
>   =20