I'm now related to a crime as wikipedia says.
"Wer unbeabsichtigt einen nicht-öffentlichen Funkdienst empfängt, darf den Inhalt und die Tatsache des Empfangs anderen nicht mitteilen (§ 89 Telekommunikationsgesetz)."
If you inadvertently receive a non-public radio service, you are not allowed to communicate the content and the fact of receiving to other (§ 89 Telecommunications Act).
Uuups did not know that I'm not allowed to share this information. I know that it's not allowed to listen but to say that you can also? Stupid.