Hi Markus,
I notice that if one adds the frequency of DCF42 to the line frequencies
that are causing you problems, the resultant frequencies are very close to
the broadcast station "Radioropa" at Burg. Perhaps it has some secondary
modulation. Could this be the problem? If so an LPF might help.
If you are sure that it is DCF49/42 please explain how you think the spur
frequencies might be derived. I would like to learn a little more.
Happy New Year, John, G4CNN
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