Nice overview of digital radio. Now, imagine if #ICASA required mobile phones to receive it, as many already receive FM. The justification could be public safety/public service announcements, but it would create an ecosystem for all sorts of datacasting https://techcentral.co.za/whatever-happened-to-shortwave-radio/260808/
Whatever happened to shortwave radio?  - TechCentral

Shortwave radio was a crucial technology between the 1960s and 1990s. It’s now getting a digital makeover. 

TechCentral