English: 853Hz + 960Hz simultaneously (20 seconds): civil defense and weather warning sound for radio and TV stations: originally used by U.S. Emergency Broadcast System; now used by the successor Emergency Alert System as the Attention Signal (47 CFR 11.31)
이 저작물은 완전히 공공의 재산으로서의 정보로만 구성되어 있으며, 창작성이 있는 요소가 포함되어 있지 않아 저작권 보호에 부적격하므로 퍼블릭 도메인입니다.
This file consists of actual or simulated versions of: Emergency Alert System codes, the Emergency Alert System Attention Signal, and/or the Wireless Emergency Alerts Attention Signal. Use of these tones are restricted by the Federal Communications Commission. For more information, see https://docs.fcc.gov/public/attachments/DA-19-758A1.pdf.
기존 올리기 기록
The original description page was here. All following user names refer to en.wikipedia.
2005-04-09 04:11 Denelson83 0×0× (69451 bytes) Better version of two-tone attention signal formerly used for the [[Emergency Broadcast System]], now used for the [[Emergency Alert System]]. {{GFDL-self}}
설명
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This file is an emergency alert system used by the United States. It is also the standard for communication protocol. The tone is heard around the world in Europe.
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