A fact from Cadena nacional appeared on Wikipedia's Main Page in the Did you know column on 7 July 2015 (check views). The text of the entry was as follows:
Did you know... that President Rafael Correa ordered Ecuador's television stations to broadcast 233 cadenas nacionales in 2009?
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I disagree: that article is for the system in the United States specifically, and both that article and Emergency population warning are for systems that are still purely public-safety related. The Latin American cadena, according to this article, has a markedly political purpose. Unless there's an article I'm unaware of on the topic of "national political broadcast" that this could be merged into, this article seems to be well-sourced and notable. If there's an English-language term that's used for the topic more than cadena, by all means propose it. But if the loanword is the predominant term in English, it should stay. — ˈzɪzɨvə (talk) 22:29, 7 July 2015 (UTC)Reply