Emergency Broadcast: Difference between revisions
¡Alerta Sísmica! (MX)
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Also, the Japanese test signal is not entirely standardized across broadcasting stations (even stations within a given city like will differ; examples abound on [[YouTube]]) except for the emergency chime, a video/audio description of when a real broadcast would be activated, an emergency tone, and a notification in Japanese that the audible "piro-piro-piro" tone (the data burst, not the bells mentioned above) is only audible on analog TVs, with an additional device required after the digital transition due to it being a data signal to digital TVs.
'''México:''' The [[wikipedia:Mexican Seismic Alert System|Mexican Seismic Alert System]] ([[wikipedia:es:Sistema de Alerta Sísmica Mexicano|es:Sistema de Alerta Sísmica Mexicano]], SASMEX) blares warnings of a distant earthquake (¡Alerta Sísmica!) up to a minute before the shock wave hits. There are loudspeakers and sirens in Mexico City and the city of Oaxaca, there are radio alerts in a similar format to the US Weatheradio in several cities, there are interruptions of conventional broadcast media.
'''Russia:''' An old system of power-independent wire radio ("radiotochka") still exists for this exact purpose, for performing emergency broadcasts even during blackouts.
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