Thanks to the forum ‘HF Underground’ I was able to identify a very weak station broadcasting in AM on 6965 kHz as “Radio The Beginning”. “The Beginning” broadcasts from the north eastern United States. The transmission power is 100 watts and the signal bridged about +- 5600 km away! In this YouTube video: https://youtu.be/7P4LCB-IiRs you can see a short recording in which you see the little signal and in the beginning you can also recognize some audio (= the song “Wonderwall”). I was therefore happy that “De Beginning” recognized the weak signal as this from their station!