This is interesting. Dont need no equipment, money or anything else other than a Zeno account:
https://currenteer.com/emergency-alert-system-on-zeno-fm /
".. Zeno.FM’ Emergency Alert System shows how online radio can be more than music or talk shows...
By using EAS Zeno.FM helps radio stations build trust with their listeners. ..
The EAS on Zeno.FM lets radio stations share vital alerts from local authorities or the National Weather Service. ...Setting up EAS on Zeno.FM is easy for radio stations to use. It helps broadcasters quickly send out vital alerts during crises. The system allows them to set up the types of emergencies, the areas it affect and how urgent the alerts are. Broadcasters can manage these alerts from their Zeno.FM dashboard. hence it gives them full control..
Setting Up Alerts for Various Audiences
Stations with listeners from different places or cultures may want alerts that consider other languages and regions. Zeno.FM EAS feature lets stations customize alerts to match their audience. "
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I didn't realize it until I saw this article, I'm still on Zenos free plan which is why I didnt see the option (I haven't even set up a stream yet, just using the playlist option). Imagine that, a free EAS for those with streams.