The Feuerwehr Hamburg is the professional fire and rescue service for the city of Hamburg, Germany, and its stations use an alarm gong system to notify crews of incoming incidents. Unlike a vehicle siren, the gong is broadcast indoors so firefighters are alerted day and night, even while resting between calls. Recordings of the sound have circulated on German soundboards and in fire service fan communities, where it is shared as an authentic example of station life. It remains popular for realistic roleplay, documentaries, and edits that want a genuine German emergency tone.