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. :-)
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