: While not Bochum-specific, the Feuerwehr Neuss Download Portal is one of the few official fire department sites that offers a variety of alarm gongs (Hausgong, Zugalarm) for public download. Usage Warnings
: Sites like Zedge host numerous user-uploaded "Feuerwehr Alarmgong" files that mimic the Bochum or general German fire station alerts.
: Websites like Freesound.org, SoundBible.com, or specialized audio databases often host a wide range of sound effects. You might find the sound you're looking for here, offered under various licenses.
