noun
disaster prevention wireless system; wireless-activated disaster warning system
Refers to the municipal outdoor speaker system used in Japan to broadcast emergency alerts and daily announcements.
防災無線で地震の警報が流れた。
An earthquake warning was broadcast over the disaster prevention wireless system.
毎日夕方に防災無線から音楽が聞こえる。
Every evening, music can be heard from the disaster prevention wireless system.
A longer, more formal term for the same system, often used in official contexts.
Compound of 防災 (disaster prevention) and 無線 (wireless).