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Re: LF: Generating 8970 Hz carrier with Spectrum Lab ?

To: <[email protected]>
Subject: Re: LF: Generating 8970 Hz carrier with Spectrum Lab ?
From: "PA1SDB, Peter" <[email protected]>
Date: Fri, 27 Apr 2012 09:22:39 -0000
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Hello Stefan, VLF,
I think you are very lucky with a PC that generates such a stable signal.
>Here i used a more than 10 year old notebook. Also if people like to use the digimode
>termninal or also the frequency generator, not beeing limited to frequencies given by the
>steps of a divider, SpecLab is much more comfortable. Also on the receive side i
>remember to have received DF6NM's first tests in a 47 uHz window, with a stable trace. :-)
>73, Stefan
I tried two notebooks now. That one where I was talking about yesterday is also a 10 year old Acer. Nice to see here (grab below) how good that "Sampling rate detector" works. In the first few hours I forgot to un-set the "measure only" option.... The signal drifts all over the graph. Then it stabillizes when I did the adjustment in the cfg.
Unfortunately that 2th PC that I test here, a "modern" 2 year old Acer Extensa 5235 notebook generates also a terrible trace at 47uHz.
One more PC to go :-)
73's , Peter - PA1SDB

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