@nix yes and no.

#CellBroadcast has the advantage - like #PTY31 [#RDS on #FM-based USW Radio] to non only use existing tech and devices, but being localized.

OFC they can advise people to tune in to a local station at a certain frequency for detailed info.

@nix Ever heard of #CellBroadcast ?
https://en.wikipedia.org/wiki/Cell_Broadcast#Emergency_communication_system

And yes, I know #PTY31 from #RDS...
https://en.wikipedia.org/wiki/Radio_Data_System#Content_and_implementation

Also there's stuff like https://ntfy.sh ...

Personally, I think the next best thing would be #AFSK'ing #PocketCrypto over #CB Radio...
https://github.com/KBtechnologies/PocketCrypto
https://en.wikipedia.org/wiki/Citizens_band_radio#Standard_channels

@hackaday Germany sadly doesn't have such standards and it required hundreds of avoidable deaths for #CellBroadcast to be reinstated.

Can't go into details beyond the fact that #RDS' #PTY31 would be used on USW-FM radio.