This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
DCF Impulse. de Amplitudenmodulierte Sendeleistung als Funktion der Zeit en Amplitude modulated DCF signal as function of time Note that the figure shows residual amplitude level of about but currently it is lowered to own Herbertweidner DCF code svg Herbertweidner Original upload log de DCFImpulse Herbertweidner bytes